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16 Bit Digital to Analog Converter
PT8211
DESCRIPTION
PT8211 is a dual channel, 16 bit Digital-to-Analog Converter IC utilizing CMOS technology specially designed for the digital audio applications. The internal conversion architecture is based on a R-2R resister ladder network, internal circuit is well matched and a 16 bit dynamic range is achieved even in whole supply voltage range. PT8211 also enhanced the performance of timing responsibility in digital serial bus, in a company with the fast switching R-2R network that make 8X oversampling audio signal is also supported. PT8211 can be supported wide range of sample frequency, it is compatible with TDA1311 by functionally. It's digital input timing format is Least Significant Bit Justified (LSBJ), or so called Japanese input format. Digital code format is two's complement and MSB first. PT8211 is available in 8-pin SOP or DIP.
FEATURES
* * * * * * * * CMOS technology Support 3.3V bus input level Low power consumption Two audio channel output in the same chip 16 bit dynamic range Low total harmonic distortion No phase shift between both output channel Available in 8 pins, SOP or DIP
APPLICATIONS
* * * * Digital audio equipment CD ROM/VCD Multimedia sound card MPEG decoder card
PT8211 V1.5
-1-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
BLOCK DIAGRAM
L CH 16- bit R-2R Re sisto r Netwo rk
I OU TL
LCH 6
1 2 3
BCK WS DIN
Digita l In put Latch
Po wer Supp ly & VDD Voltage Referen ce GND
5 4
RCH 16- bit R-2R Re sisto r Netwo rk
RCH
I OU TR
8
PT8211 V1.5
-2-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
PIN CONFIGURATION
BCK WS DIN GND 1 2 3 4 PT82 11 8 7 6 5 RCH NC LCH VDD
PIN DESCRIPTION
Pin Name BCK WS DIN GND VDD LCH NC RCH I/O I I I Power O O Description Serial Bit Clock Input Word Select Clock Input Pin Data Input Pin Ground Positive Power Supply Left Channel Output No Connection Right Channel Output Pin No. 1 2 3 4 5 6 7 8
PT8211 V1.5
-3-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
FUNCTION DESCRIPTION
The serial bus input data format of PT8211 is Japanese or called LSBJ (Least Significant Bit Justified) format. Each valid DIN data will be shifted to the input register in the rising edge of the BCK, only the first 16bit data ( from MSB) is valid if the input data length is more than 16bits, other data bit will be truncated. The clock frequency of the BCK could run up to 20MHz and supported to 8x over-sampling in 48KHz WS clock rate. Both left and right data words are time multiplexed. Please refer to the diagrams for timing and input signal formats.
WS RIG HT C H L EF T CH
BCK
DIN
L SB
Figure 1. Japanese Input Signal Format
WS BC K DIN MSB LSB
Figure 2. Timing and Input Signal Formats
The DIN data must be the 2's complementary format and the MSB (Most Significant Bit) must be the first. When the Word Select (WS) clock in the Low level, the DIN data will be shifted to the right input register. likewise, the DIN data will be shifted to the left input register when WS clock in the High level. The buffered DIN data then feeding to the DAC after both input register are all settled down, this can eliminated the phase shift happened between two channel output. DAC output is generated by a 16 bit R-2R resistor ladder network. This signal is driven to the Right/Left Channel (RCH/LCH) via the buffer operational amplifier.
PT8211 V1.5
-4-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
ABSOLUTE MAXIMUM RATINGS
Parameter Power supply voltage Input voltage Operating temperature Storage temperature Symbol VDD VI Topr Tstg Rating -0.3 ~ 7.0 -0.3 ~ VDD+0.3 -40 ~ +85 -65 ~ +150 Unit V V
DC CHARACTERISTICS
(Test Conditions: Ta=25, VDD=5.0V, unless otherwise specified) Parameter Symbol Condition Min Power supply voltage VDD THD<1% 3 Operating current Is VDD=5V 10 Digital input high level (see Note) VIH 1.8 Digital input low level (see Note) VIL GND Note: Digital input level will changed due to supply voltage.
Typ 5 13 2.2 1.2
Max. 6 18 Vcc 1.8
Unit V mA V V
TIMING CHARACTERISTICS
(Please refer to the Figure 1) Parameter Symbol Bit clock frequency Fbck Word clock frequency Fws Input data rate Fdin H Level time tH Rise time tR Fall time tF
Condition BCK WS DIN
Min 25
Typ -
Max 18.4 384 18.4
20 20
Unit MHz KHz Mbits/s ns ns ns
PT8211 V1.5
-5-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
ANALOG AUDIO CHARACTERISTICS
(Unless otherwise specified, Test Condition: Ta=25, VDD=5V) Parameter Symbol Condition Min. Maximum output level VO 2.2 1KHz, 0dB FS Total harmonic distortion THD 1KHz, -10dB FS 0.08 1KHz,-60dB FS Monotonicity Mt Dynamic range DR 85 Data=0000H 89 Signal to noise ratio S/N No clock input Both Output CTa 80 Channel Cross talk Digital in to CTd 75 Analog out Both Output Phase shift Pd Channel
Typ 2.5 0.13 0.1 3
89 93 95 89 80 0
Max. 2.7 0.3 0.2 6 16 97
92
Unit VPP %
% Bit dB dB dB
0.2 s
PT8211 V1.5
-6-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
APPLICATION CIRCUIT AND NOTE
To further suppress residual noise, we suggest placing an additional low pass filter after the analog output of PT8211. Please refer to the circuit diagram below. This is a simple second-order analog post filter. If low noise output is very important for your circuit design we suggest using a regulated power supply.
1000pF 7.5K BCK WS DIN GND VDD 10 RCH NC LCH VDD 1000pF 7.5K 47 F 100nF 7.5K 7.5K
Right Channel Audio Output op 470pF
PT8211
op 470pF
Left Channel Audio Output
PT8211 V1.5
-7-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
ORDER INFORMATION
Valid Part Number PT8211-S PT8211 Package Type 8 Pins, SOP, 150mil 8 Pins, DIP, 300mil Top Code PT8211-S PT8211
PT8211 V1.5
-8-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
PACKAGE INFORMATION
8 PINS, SOP, 150MIL
PT8211 V1.5
-9-
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
PT8211 V1.5
- 10 -
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
Symbol A A1 A2 b b1 c c1 D E E1 e L L1 L2 R R1 h 1 2 Min. 1.35 0.10 1.25 0.31 0.28 0.17 0.17 Typ. 4.90 BSC. 6.00 BSC. 3.90 BSC. 1.27 BSC. 1.04 REF. 0.25 BSC. -
PT8211
Max. 1.75 0.25 1.65 0.51 0.48 0.25 0.23
0.40 0.07 0.07 0.25 0 5 0
1.27 0.50 8 15 -
Notes: 1. Dimensioning and tolerancing per ANSI Y 14.5M-1994 2. Controlling Dimension: MILLIMETERS. 3. Dimension D does not include mold flash protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15 mm (0.006 in) per end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm per side. D and E1 dimensions are determined at datum H. 4. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. 5. Datums A & B to be determined at datum H. 6. N is the number of terminal positions. (N=8) 7. The dimensions apply to the flat section of the lead between 0.10 to 0.25mm from the lead tip. 8. Dimension "b" does not include dambar protrusion. Allowable dambar protrusion shall be 0.10mm total in excess of the "b" dimension at maximum material condition. The dambar cannot be located on the lower radius of the foot. 9. This chamfer feature is optional. If it is not present, then a pin 1 identifier must be located within the index area indicated. 10. Refer to JEDEC MS-012, Variation AA. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT8211 V1.5 - 11 March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
PT8211
8 PINS, DIP, 300MIL
PT8211 V1.5
- 12 -
March, 2006
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
16 Bit Digital to Analog Converter
Symbol A A1 A2 b b1 b2 b3 c c1 D D1 E E1 e eA eB eC L Min. 0.015 0.115 0.014 0.014 0.045 0.030 0.008 0.008 0.355 0.005 0.300 0.240
0.000 0.115
PT8211
Nom. 0.130 0.018 0.018 0.060 0.039 0.010 0.010 0.365 0.310 0.250 0.100 bsc. 0.300 bsc. 0.130 Max. 0.210 0.195 0.022 0.020 0.070 0.045 0.014 0.011 0.400
0.325 0.280 0.430 0.060 0.150
Notes: 1. Controlling Dimensions: INCHES. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Symbols are defined in the "MO Series Symbol LIST" in Section 2.2 of Publication No.95. 4. Dimension A, A1 and L are measured with the package seated in JEDEC Seating Plane Gauge GS-3. 5. D, D1 and E1 dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch. 6. E and eA measured with the leads constrained to be perpendicular to data -c- . 7. eB and eC are measured at the lead tips with the leads unconstrained. 8. N is the number of leads (N=8) 9. Pointed or rounded lead tips are preferred to ease insertion. 10. b2 and b3 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm) 11. Variation BA has a b3 dimension and is 1/2 lead package. 12. Distance between the leads including dambar protrusions to be 0.005 inch minimum. 13. Datum plane -H- coincident with the bottom of lead, where lead exits the body. 14. Refer to JEDEC MS-001, Variation BA. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT8211 V1.5
- 13 -
March, 2006

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