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| LM146 LM246 LM346 PROGRAMMABLE QUAD BIPOLAR OPERATIONAL AMPLIFIER s PROGRAMMABLE ELECTRICAL CHARACTERISTICS LOW SUPPLY CURRENT (250A/amplifier) GAIN-BANDWITH PRODUCT : 1MHz LARGE DC VOLTAGE GAIN : 120dB LOW NOISE VOLTAGE : 28nV/Hz WIDE POWER SUPPLY RANGE / 1.5V to 22V s CLASSE AB OUTPUT STAGE. NO CROSS-OVER DISTORTION s OVERLOAD PROTECTION FOR INPUTS AND OUTPUTS s s s s s DESCRIPTION The LM346 consists of four independent, high gain, internally compensated, low power programmable amplifiers. Two external resistors (R set) allow the user to program the gain-bandwith product, slew rate, supply current, input bias current, input offset current and input noise. For example the user can trade-off supply current for bandwith or optimize noise figure for a given source resistance. In a similar way other amplifier characteristics can be tailored to the application. Except for the two programming pins at the end of the package the LM346 pin out is the same as the LM324 and LM348. PROGRAMMING EQUATIONS : Total supply current = 1mA (Iset = 10A) Gain bandwith product = 1MHz (Iset = 10A) Slew rate = 0.5V/s (Iset = 10) Input bias current 30nA (Iset = 10) Iset = current into pin 8 and pin 9 (see schematic diagram) I Vcc+ - Vcc- - 0.6 V se t = ---------------------------------------------------R set N DIP16 (Plastic Package) PIN CONNECTIONS (top view) O u tp u t 1 In v e rtin g In p u t 1 N o n -in v e rtin g in p u t 1 V CC+ N o n -in v e rtin g In p u t 2 In v e rtin g In p u t 2 1 2 3 4 5 6 7 8 + + 16 15 14 13 12 11 10 9 O u tp u t 4 In v e rtin g In p u t 4 N o n -in v e rtin g in p u t 4 V CC N o n -in v e rtin g in p u t 3 In v e rtin g in p u t 3 O u tp u t 3 Set ORDER CODE Part Number Temperature Range Package N * * * O u tp u t 2 Set LM146 -55C, +125C LM246 -40C, +105C LM346 0C, +70C Example : LM246N N = Dual in Line Package (DIP)) April 2003 1/4 LM146-LM246-LM346 SCHEMATIC DIAGRAM (1/4 LM146) ABSOLUTE MAXIMUM RATINGS Symbol VCC Vi Vid Supply voltage l Input Voltage 1) Parameter Value 22 15 30 Unit V V V mW Differential Input Voltage Output Short-circuit Duration 2) Infinite 500 -55 to +125 40 to +105 0 to +70-65 to +150 Ptot Power Dissipation Opearting Free-air Temperature Range LM146 LM246 LM346 Storage Temperature Range Toper Tstg 1. 2. C C For supply voltage less than 15V, the absolute maximum input voltage is equal to the supply voltage. Any of the amplifier outputs can be shorted to ground indefinitly; however more than one should not be simultaneously shorted as the maximum junction will be exceeded. 2/4 LM146-LM246-LM346 ELECTRICAL CHARACTERISTICS VCC+ = 15V, I set = 10A, Tamb = +25C (unless otherwise specified) LM146 Symbol Parameter Min. Vio Input Offset Voltage (Rs 10k) Tamb = 25C Tmin Tamb Tmax Input Offset Current Tamb = 25C Tmin Tamb Tmax Input Bias Current Tamb = 25C Tmin Tamb Tmax Large Signal Voltage Gain (Vo = 10V, RL = 10k) Tamb = 25C Tmin Tamb Tmax Supply Voltage Rejection Ratio (Rs 10k) Tamb = 25C Tmin Tamb Tmax Supply Current, all Amp, no load Tamb = 25C Tmin Tamb Tmax Input Common Mode Voltage Range Tamb = 25C Tmin Tamb Tmax Common Mode Rejection Ratio (Rs 10k) Tamb = 25C Tmin Tamb Tmax Output Short-circuit Current Tamb = 25C Tmin Tamb Tmax Output Voltage Swing (RL 10k) Tamb = 25C Tmin Tamb Tmax Slew Rate (VI = 10V, RL = 10k, CL = 100pF, unity Gain) Input Resistance Input Capacitance 13.5 13.5 80 70 10 4 12 12 0.3 110 Typ. 0.5 Max. 3 5 20 25 100 100 Min. Typ. 0.5 Max. mV 5 6 nA 2 2 100 100 nA 30 30 250 250 V/mV 100 50 80 80 1000 50 25 80 80 2 2 13.5 13.5 dB 80 70 30 35 10 4 12 12 0.3 110 mA 20 20 30 35 V 14 14 V/s 0.5 1 2 120 0.5 1 2 120 M pF dB MHz 0.8 1 0.5 1 % 0.015 28 0.015 28 nV ----------Hz 1000 dB 110 110 mA 1 1 2 2 LM246 - LM346 Unit Iio Iib Avd SVR Icc Vicm CMR Ios Vopp SR RI CI Vo1/Vo2 Channel Separation (RL = 10k, Vo = 12Vpp) GBP Gain Bandwith Product (VI = 10 mV, RL = 10k, CL = 100pF f =100kHz) Total Harmonic Distortion (f = 1kHz, Av = 20dB, RL = 10k CL = 100pF, Vo = 2Vpp) Equivalent Input Noise Voltage (f = 1kHz, Rs = 100 THD en 3/4 LM146-LM246-LM346 PACKAGE MECHANICAL DATA 16 PINS - PLASTIC PACKAGE Millimeters Dim. Min. a1 B b b1 D E e e3 F i L Z 0.51 0.77 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 Typ. Max. 1.65 Min. 0.020 0.030 Inches Typ. Max. 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom http://www.st.com 4/4 |
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