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TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 features applications D D D D D D Dual 8-Bit Voltage Output DAC Programmable Internal Reference Programmable Settling Time - 2.5 s in Fast Mode - 12 s in Slow Mode Compatible With TMS320 and SPITM Serial Ports Differential Nonlinearity <0.2 LSB Max Monotonic Over Temperature D D D D D Digital Servo Control Loops Digital Offset and Gain Adjustment Industrial Process Control Machine and Motion Control Devices Mass Storage Devices D PACKAGE (TOP VIEW) description The TLV5625 is a dual 8-bit voltage output DAC with a flexible 3-wire serial interface. The serial interface is compatible with TMS320, SPITM, QSPITM, and MicrowireTM serial ports. It is programmed with a 16-bit serial string containing 4 control and 8 data bits. DIN SCLK CS OUTA 1 2 3 4 8 7 6 5 VDD OUTB REF AGND The resistor string output voltage is buffered by an x2 gain rail-to-rail output buffer. The buffer features a Class-AB output stage to improve stability and reduce settling time. The programmable settling time of the DAC allows the designer to optimize speed versus power dissipation. Implemented with a CMOS process, the device is designed for single supply operation from 2.7 V to 5.5 V. It is available in an 8-pin SOIC package in standard commercial and industrial temperature ranges. AVAILABLE OPTIONS PACKAGE TA 0C to 70C - 40C to 85C SOIC (D) TLV5625CD TLV5625ID Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corporation. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright (c) 2000, Texas Instruments Incorporated POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 functional block diagram REF AGND VDD Power-On Reset Power and Speed Control 2 x2 DIN 8 SCLK Serial Interface and Control 8-Bit DAC A Latch 8 OUTA PRODUCT PREVIEW 8 Buffer 8 8 x2 CS 8-Bit DAC B Latch OUTB Terminal Functions TERMINAL NAME AGND CS DIN OUTA OUTB REF SCLK VDD NO. 5 3 1 4 7 6 2 8 I/O/P P I I O O I I P Ground Chip select. Digital input active low, used to enable/disable inputs. Digital serial data input DAC A analog voltage output DAC B analog voltage output Analog reference voltage input Digital serial clock input Positive power supply DESCRIPTION 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage (VDD to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Reference input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 V to VDD + 0.3 V Digital input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 V to VDD + 0.3 V Operating free-air temperature range, TA: TLV5625C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C TLV5625I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 85C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions MIN Supply voltage VDD voltage, Power on reset, POR High-level digital input voltage, VIH Low-level digital input voltage, VIL Reference voltage, Vref to REF terminal Reference voltage, Vref to REF terminal Load resistance, RL Load capacitance, CL Clock frequency, fCLK Operating free-air temperature, TA free air temperature TLV5625C TLV5625I 0 -40 VDD = 2.7 V to 5.5 V VDD = 2.7 V to 5.5 V VDD = 5 V (see Note 1) VDD = 3 V (see Note 1) VDD = 5 V VDD = 3 V 4.5 2.7 0.55 2 0.8 AGND AGND 2 100 20 70 85 2.048 1.024 VDD -1.5 VDD - 1.5 NOM 5 3 MAX 5.5 3.3 2 V V V V k pF MHz C V UNIT V NOTE 1: Due to the x2 output buffer, a reference input voltage (VDD-0.4 V)/2 causes clipping of the transfer function. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 electrical characteristics over recommended operating conditions (unless otherwise noted) power supply PARAMETER IDD Power su ly current supply y Power-down supply current PSRR Power supply rejection ratio Zero scale, See Note 2 Full scale, See Note 3 TEST CONDITIONS No load, All inputs = AGND or VDD, DAC latch = 0x800 Fast Slow MIN TYP 1.8 0.8 1 -65 -65 MAX 2.3 1 3 A dB UNIT mA NOTES: 2. Power supply rejection ratio at zero scale is measured by varying VDD and is given by: PSRR = 20 log [(EZS(VDDmax) - EZS(VDDmin)/VDDmax] 3. Power supply rejection ratio at full scale is measured by varying VDD and is given by: PSRR = 20 log [(EG(VDDmax) - EG(VDDmin)/VDDmax] static DAC specifications PARAMETER Resolution INL Integral nonlinearity Differential nonlinearity Zero-scale error (offset error at zero scale) Zero-scale-error temperature coefficient Gain error Gain-error temperature coefficient See Note 4 See Note 5 See Note 6 See Note 7 See Note 8 See Note 9 10 10 0.5 DNL EZS EZS TC EG EG TC TEST CONDITIONS MIN 8 0.3 0.07 0.5 0.2 12 TYP MAX UNIT bits LSB LSB mV ppm/C % full scale V ppm/C PRODUCT PREVIEW NOTES: 4. The relative accuracy of integral nonlinearity (INL), sometimes referred to as linearity error, is the maximum deviation of the output from the line between zero and full scale, excluding the effects of zero-code and full-scale errors. 5. The differential nonlinearity (DNL), sometimes referred to as differential error, is the difference between the measured and ideal 1-LSB amplitude change of any two adjacent codes. 6. Zero-scale error is the deviation from zero voltage output when the digital input code is zero. 7. Zero-scale error temperature coefficient is given by: EZS TC = [EZS (Tmax) - EZS (Tmin)]/2Vref x 106/(Tmax - Tmin). 8. Gain error is the deviation from the ideal output (2Vref - 1 LSB) with an output load of 10 k. 9. Gain temperature coefficient is given by: EG TC = [EG (Tmax) - Eg (Tmin)]/2Vref x 106/(Tmax - Tmin). output specifications PARAMETER VO Output voltage range Output load regulation accuracy TEST CONDITIONS RL = 10 k VO = 4.096 V, 2.048 V RL = 2 k MIN 0 TYP MAX VDD-0.4 0.29 UNIT V % FS reference input PARAMETER VI RI CI Input voltage range Input resistance Input capacitance Fast Reference input bandwidth Reference feedthrough REF = 0.2 Vpp + 1.024 V dc 02 1 024 REF = 1 Vpp at 1 kHz + 1.024 V dc (see Note 10) Slow TEST CONDITIONS MIN 0 10 5 1.3 525 - 80 TYP MAX VDD-1.5 UNIT V M pF MHz kHz dB NOTE 10: Reference feedthrough is measured at the DAC output with an input code = 0x000. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 electrical characteristics over recommended operating conditions (unless otherwise noted) (Continued) digital inputs PARAMETER IIH IIL Ci High-level digital input current Low-level digital input current Input capacitance TEST CONDITIONS VI = VDD VI = 0 V MIN -1 8 TYP MAX 1 UNIT A A pF analog output dynamic performance PARAMETER ts(FS) (FS) ts(CC) (CC) SR Output settling time, full scale time Output settling time, code to code time Slew rate Glitch energy SNR SINAD THD SFDR Signal-to-noise ratio Signal-to-noise + distortion Total harmonic distortion Spurious free dynamic range fs = 102 kSPS, fout = 1 kHz, , , RL = 10 k, CL = 100 pF TEST CONDITIONS RL = 10 k, , See Note 11 RL = 10 k, , See Note 12 RL = 10 k, , See Note 13 DIN = 0 to 1, CS = VDD CL = 100 pF, , CL = 100 pF, , CL = 100 pF, , Fast Slow Fast Slow Fast Slow FCLK = 100 kHz, 52 48 48 MIN TYP 1 3 1 2 3 0.5 5 54 49 -50 50 -48 dB MAX 3 10 UNIT s s V/s nV-s NOTES: 11. Settling time is the time for the output signal to remain within 0.5 LSB of the final measured value for a digital input code change of 0x020 to 0xFDF and 0xFDF to 0x020 respectively. Not tested, assured by design. 12. Settling time is the time for the output signal to remain within 0.5 LSB of the final measured value for a digital input code change of one count. Not tested, assured by design. 13. Slew rate determines the time it takes for a change of the DAC output from 10% to 90% of full-scale voltage. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 digital input timing requirements MIN tsu(CS-CK) tsu(C16-CS) twH twL tsu(D) th(D) Setup time, CS low before first negative SCLK edge Setup time, 16th negative SCLK edge before CS rising edge SCLK pulse width high SCLK pulse width low Setup time, data ready before SCLK falling edge Hold time, data held valid after SCLK falling edge 10 10 25 25 10 5 NOM MAX UNIT ns ns ns ns ns ns timing requirements twL twH SCLK X 1 tsu(D) th(D) 2 3 4 5 15 16 X PRODUCT PREVIEW DIN X D15 D14 D13 D12 D1 D0 X tsu(C16-CS) tsu(CS-CK) CS Figure 1. Timing Diagram 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs LOAD CURRENT 2.050 3 V Slow Mode, SOURCE 4.105 VDD=3 V VREF=1 V Full scale VO - Output Voltage - V OUTPUT VOLTAGE vs LOAD CURRENT 5 V Slow Mode, SOURCE 4.100 4.095 VDD=5 V VREF=2 V Full scale 2.048 VO - Output Voltage - V 2.046 3 V Fast Mode, SOURCE 5 V Fast Mode, SOURCE 2.044 2.042 2.040 2.038 2.036 4.090 4.085 4.080 4.075 4.070 0.00 -0.02 -0.04-0.10 -0.20 -0.41 -1.02 -2.05 -4.10 Load Current - mA 0.00 -0.01 -0.02-0.05 -0.10 -0.20 -0.51 -1.02 -2.05 Load Current - mA Figure 2 OUTPUT VOLTAGE vs LOAD CURRENT 0.20 0.18 0.16 VO - Output Voltage - V 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 0.00 0.01 0.02 0.05 0.10 0.20 0.51 1.02 2.05 Load Current - mA 0.05 0.00 3 V Fast Mode, SINK VDD=3 V VREF=1 V Zero scale VO - Output Voltage - V 3 V Slow Mode, SINK 0.35 VDD=5 V VREF=2 V Zero scale Figure 3 OUTPUT VOLTAGE vs LOAD CURRENT 0.30 0.25 5 V Slow Mode, SINK 0.20 0.15 5 V Fast Mode, SINK 0.10 0.00 0.02 0.04 0.10 0.20 0.41 1.02 2.05 4.09 Load Current - mA Figure 4 Figure 5 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREE-AIR TEMPERATURE 1.80 1.60 I DD - Supply Current - mA 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 -40.00-20.00 0.00 20.00 40.00 60.00 80.00 100.00120.00 TA - Free-Air Temperature - C Slow Mode VDD=3 V VREF=1 V Full scale 1.80 1.60 Fast Mode I DD - Supply Current - mA 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 -40.00-20.00 0.00 20.00 40.00 60.00 80.00 100.00120.00 TA - Free-Air Temperature - C Slow Mode VDD=5 V VREF=2 V Full scale Fast Mode SUPPLY CURRENT vs FREE-AIR TEMPERATURE PRODUCT PREVIEW Figure 6 TOTAL HARMONIC DISTORTION vs FREQUENCY 0.00 THD - Total Harmonic Distortion - dB -10.00 -20.00 -30.00 -40.00 -50.00 3 V Fast Mode -60.00 -70.00 5 V Fast Mode -80.00 -90.00 1 10 f - Frequency - kHz 100 VREF = 1 V + 1 VP/P Sinewave, Output Full Scale 0.00 -10.00 THD - Total Harmonic Distortion - dB -20.00 -30.00 -40.00 Figure 7 TOTAL HARMONIC DISTORTION vs FREQUENCY VREF = 1 V + 1 VP/P Sinewave, Output Full Scale 3 V Slow Mode -50.00 -60.00 -70.00 -80.00 -90.00 1 10 f - Frequency - kHz 100 5 V Slow Mode Figure 8 Figure 9 8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 TYPICAL CHARACTERISTICS DIFFERENTIAL NONLINEARITY vs DIGITAL OUTPUT CODE DNL - Differential Nonlinearity - LSB 0.10 0.08 0.06 0.04 0.02 0.00 -0.02 -0.04 -0.06 -0.08 -0.10 0 64 128 Digital Output Code 192 255 Figure 10 INTEGRAL NONLINEARITY vs DIGITAL OUTPUT CODE INL - Integral Nonlinearity - LSB 0.5 0.4 0.3 0.2 0.1 -0.0 -0.1 -0.2 -0.3 -0.4 -0.5 0 64 128 Digital Output Code 192 255 Figure 11 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 APPLICATION INFORMATION general function The TLV5625 is a dual 8-bit, single-supply DAC, based on a resistor-string architecture. It consists of a serial interface, a speed and power-down control logic, a resistor string, and a rail-to-rail output buffer. The output voltage (full scale determined by the reference) is given by: 2 REF CODE [V] 0x1000 Where REF is the reference voltage and CODE is the digital input value in the range 0x000 to 0xFF0. A power-on reset initially puts the internal latches to a defined state (all bits zero). serial interface A falling edge of CS starts shifting the data bit-per-bit (starting with the MSB) to the internal register on the falling edges of SCLK. After 16 bits have been transferred or CS rises, the content of the shift register is moved to the target latches (DAC A, DAC B, BUFFER, CONTROL), depending on the control bits within the data word. PRODUCT PREVIEW Figure 2 shows examples of how to connect the TLV5625 to TMS320, SPITM, and MicrowireTM. TMS320 DSP FSX DX CLKX TLV5625 CS DIN SCLK SPI I/O MOSI SCK TLV5625 CS DIN SCLK Microwire I/O SO SK TLV5625 CS DIN SCLK Figure 12. Three-Wire Interface Notes on SPITM and MicrowireTM: Before the controller starts the data transfer, the software has to generate a falling edge on the pin connected to CS. If the word width is 8 bits (SPITM and MicrowireTM) two write operations must be performed to program the TLV5625. After the write operation(s), the holding registers or the control register are updated automatically on the 16th positive clock edge. serial clock frequency and update rate The maximum serial clock frequency is given by: f sclkmax +t whmin )t 1 wlmin + 20 MHz wlmin The maximum update rate is: f updatemax + 16 1 t whmin )t + 1.25 MHz Note that the maximum update rate is just a theoretical value for the serial interface, as the settling time of the TLV5625 should also be considered. 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 APPLICATION INFORMATION data format The 16-bit data word for the TLV5625 consists of two parts: D D D15 R1 Program bits New data D14 SPD D13 PWR D12 R0 (D15..D12) (D11..D4) D11 MSB D10 D9 D8 D7 D6 D5 D4 LSB D3 0 D2 0 D1 0 D0 0 8 Data bits SPD: Speed control bit 1 fast mode 0 slow mode PWR: Power control bit 1 power down 0 normal operation On power up, SPD and PWD are reset to 0 (slow mode and normal operation) The following table lists all possible combination of register-select bits: register-select bits R1 0 0 1 1 R0 0 1 0 1 REGISTER Write data to DAC B and BUFFER Write data to BUFFER Write data to DAC A and update DAC B with BUFFER content Reserved The meaning of the 12 data bits depends on the register. If one of the DAC registers or the BUFFER is selected, then the 12 data bits determine the new DAC value: examples of operation D D15 1 Set DAC A output, select fast mode: Write new DAC A value and update DAC A output: D14 1 D13 0 D12 0 D11 D10 D9 D8 D7 D6 D5 D4 D3 0 D2 0 D1 0 D0 0 New DAC A output value The DAC A output is updated on the rising clock edge after D0 is sampled. D D15 0 Set DAC B output, select fast mode: Write new DAC B value to BUFFER and update DAC B output: D14 1 D13 0 D12 0 D11 D10 D9 D8 D7 D6 D5 D4 D3 0 D2 0 D1 0 D0 0 New BUFFER content and DAC B output value The DAC A output is updated on the rising clock edge after D0 is sampled. D D15 0 Set DAC A value, set DAC B value, update both simultaneously, select slow mode: 1. Write data for DAC B to BUFFER: D14 0 D13 0 D12 1 D11 D10 D9 D8 D7 D6 D5 D4 D3 0 D2 0 D1 0 D0 0 New DAC B value 2. Write new DAC A value and update DAC A and B simultaneously: D15 1 D14 0 D13 0 D12 0 D11 D10 D9 D8 D7 D6 D5 D4 D3 0 D2 0 D1 0 D0 0 New DAC A value POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 APPLICATION INFORMATION examples of operation (continued) Both outputs are updated on the rising clock edge after D0 from the DAC A data word is sampled. D D15 X Set power-down mode: D14 X D13 1 D12 X D11 X D10 X D9 X D8 X D7 X D6 X D5 X D4 X D3 X D2 X D1 X D0 X X = Don't care linearity, offset, and gain error using single ended supplies When an amplifier is operated from a single supply, the voltage offset can still be either positive or negative. With a positive offset, the output voltage changes on the first code change. With a negative offset, the output voltage may not change with the first code, depending on the magnitude of the offset voltage. The output amplifier attempts to drive the output to a negative voltage. However, because the most negative supply rail is ground, the output cannot drive below ground and clamps the output at 0 V. PRODUCT PREVIEW The output voltage then remains at zero until the input code value produces a sufficient positive output voltage to overcome the negative offset voltage, resulting in the transfer function shown in Figure 13. Output Voltage 0V Negative Offset DAC Code Figure 13. Effect of Negative Offset (Single Supply) This offset error, not the linearity error, produces this breakpoint. The transfer function would have followed the dotted line if the output buffer could drive below the ground rail. For a DAC, linearity is measured between zero-input code (all inputs 0) and full-scale code (all inputs 1) after offset and full scale are adjusted out or accounted for in some way. However, single supply operation does not allow for adjustment when the offset is negative due to the breakpoint in the transfer function. So the linearity is measured between full-scale code and the lowest code that produces a positive output voltage. power-supply bypassing and ground management Printed-circuit boards that use separate analog and digital ground planes offer the best system performance. Wire-wrap boards do not perform well and should not be used. The two ground planes should be connected together at the low-impedance power-supply source. The best ground connection may be achieved by connecting the DAC AGND terminal to the system analog ground plane, making sure that analog ground currents are well managed and there are negligible voltage drops across the ground plane. A 0.1-F ceramic-capacitor bypass should be connected between VDD and AGND and mounted with short leads as close as possible to the device. Use of ferrite beads may further isolate the system analog supply from the digital power supply. Figure 14 shows the ground plane layout and bypassing technique. 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 APPLICATION INFORMATION Analog Ground Plane 1 2 3 4 8 7 6 5 0.1 F Figure 14. Power-Supply Bypassing definitions of specifications and terminology integral nonlinearity (INL) The relative accuracy or integral nonlinearity (INL), sometimes referred to as linearity error, is the maximum deviation of the output from the line between zero and full scale excluding the effects of zero code and full-scale errors. differential nonlinearity (DNL) The differential nonlinearity (DNL), sometimes referred to as differential error, is the difference between the measured and ideal 1 LSB amplitude change of any two adjacent codes. Monotonic means the output voltage changes in the same direction (or remains constant) as a change in the digital input code. zero-scale error (EZS) Zero-scale error is defined as the deviation of the output from 0 V at a digital input value of 0. gain error (EG) Gain error is the error in slope of the DAC transfer function. signal-to-noise ratio + distortion (S/N+D) S/N+D is the ratio of the rms value of the output signal to the rms sum of all other spectral components below the Nyquist frequency, including harmonics but excluding dc. The value for S/N+D is expressed in decibels. spurious free dynamic range (SFDR) SFDR is the difference between the rms value of the output signal and the rms value of the largest spurious signal within a specified bandwidth. The value for SFDR is expressed in decibels. total harmonic distortion (THD) THD is the ratio of the rms sum of the first six harmonic components to the rms value of the fundamental signal and is expressed in decibels. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 PRODUCT PREVIEW TLV5625 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN SLAS233B - JULY 1999 - REVISED JUNE 2000 MECHANICAL DATA D (R-PDSO-G**) 14 PIN SHOWN PLASTIC SMALL-OUTLINE PACKAGE 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 14 8 0.008 (0,20) NOM 0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81) 0.010 (0,25) M Gage Plane 0.010 (0,25) PRODUCT PREVIEW 1 A 7 0- 8 0.044 (1,12) 0.016 (0,40) Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) 0.004 (0,10) PINS ** DIM A MAX 8 0.197 (5,00) 0.189 (4,80) 14 0.344 (8,75) 0.337 (8,55) 16 0.394 (10,00) 0.386 (9,80) 4040047 / D 10/96 A MIN NOTES: A. B. C. D. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15). Falls within JEDEC MS-012 14 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 2000, Texas Instruments Incorporated |
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