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Part: PCM1796
Category:
Description: 24 Bit, 192kHz Stereo Audio DAC
Company: Texas Instruments, Inc.
Datasheet: Download PCM1796 datasheet File size : 115 kB
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Burr Brown Products from Texas Instruments
PCM1796
SLES100 - DECEMBER 2003
24 BIT, 192 kHz SAMPLING, ADVANCED SEGMENT, AUDIO STEREO DIGITAL TO ANALOG CONVERTER
FEATURES D 24-Bit Resolution D Analog Performance: D D D D D D
- Dynamic Range: 123 dB - THD+N: 0.0005% Differential Current Output: 4 mA p-p 8× Oversampling Digital Filter: - Stop-Band Attenuation: 98 dB - Pass-Band Ripple: ±0.0002 dB Sampling Frequency: 10 kHz to 200 kHz System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect Accepts 16-, 20-, and 24-Bit Audio Data PCM Data Formats: Standard, I2S, and Left-Justified DSD Format Interface Available Digital Filter or DSP
D 5-V Tolerant Digital Inputs D Small 28-Lead SSOP Package, Lead-Free
Product
APPLICATIONS D A/V Receivers D SACD Players D DVD Players D HDTV Receivers D Car Audio Systems D Digital Multitrack Recorders D Other Applications Requiring 24-Bit Audio DESCRIPTION
The PCM1796 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI's advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1796 provides balanced current outputs, allowing the user to optimize analog performance externally. The PCM1796 accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1796 also interfaces with external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an SPI or I2C serial control port, which supports register write and readback functions. The PCM1796 also supports the time division multiplexed command and audio (TDMCA) data format.
D D Interface Available for Optional External D TDMCA or Serial Port (SPI/I2C) D User-Programmable Mode Controls:
D D
- Digital Attenuation: 0 dB to 120 dB, 0.5 dB/Step - Digital De-Emphasis - Digital Filter Rolloff: Sharp or Slow - Soft Mute - Zero Flag for Each Output Compatible With PCM1792 (Pins and Mode Controls) Dual Supply Operation: - 5-V Analog, 3.3-V Digital
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
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.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
PCM1796
www.ti.com SLES100 - DECEMBER 2003
ORDERING INFORMATION
PRODUCT PACKAGE PACKAGE CODE OPERATION TEMPERATURE RANGE -25°C to 85°C PACKAGE MARKING PCM1796 ORDERING NUMBER PCM1796DB PCM1796DBR TRANSPORT MEDIA Tube Tape and reel
PCM1796DB
28-lead SSOP
28DB
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1) PCM1796 Supply voltage VCC1, VCC2L, VCC2R VDD -0.3 V to 6.5 V -0.3 V to 4 V ±0.1 V ±0.1 V 0.3 V to 6.5 V 0.3 V to (VDD + 0.3 V) < 4 V 0.3 V to (VCC + 0.3 V) < 6.5 V ±10 mA 40°C to 125°C 55°C to 150°C 150°C 260°C, 5 s 260°C
Supply voltage differences: VCC1, VCC2L, VCC2R Ground voltage differences: AGND1, AGND2, AGND3L, AGND3R, DGND LRCK, DATA, BCK, SCK, MSEL, RST, MS(2), MDI, MC, MDO(2), ZEROL(2), ZEROR(2) Digital input voltage Analog input voltage Input current (any pins except supplies) Ambient temperature under bias Storage temperature Junction temperature Lead temperature (soldering) Package temperature (IR reflow, peak) ZEROL(3), ZEROR(3), MDO(3), MS(3)
(1) 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. (2) Input mode or I2C mode (3) Output mode except for I2C mode
ELECTRICAL CHARACTERISTICS
all specifications at TA = 25°C, VCC1 = VCC2L = VCC2R = 5 V, VDD = 3.3 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted PCM1796DB PARAMETER RESOLUTION DATA FORMAT (PCM Mode) Audio data interface format Audio data bit length Audio data format fS Sampling frequency System clock frequency DATA FORMAT (DSD Mode) Audio data interface format Audio data bit length fS Sampling frequency System clock frequency 2.8224 DSD (direct stream digital) 1 Bit 2.8224 11.2896 MHz MHz Standard, I2S, left-justified 16-, 20-, 24-bit selectable MSB first, twos complement 10 200 kHz 128, 192, 256, 384, 512, 768 fS TEST CONDITIONS MIN TYP 24 MAX UNIT Bits
2
PCM1796
www.ti.com SLES100 - DECEMBER 2003
ELECTRICAL CHARACTERISTICS (Continued)
all specifications at TA = 25°C, VCC1 = VCC2L = VCC2R = 5 V, VDD = 3.3 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted PCM1796DB PARAMETER DIGITAL INPUT/OUTPUT Logic family VIH VIL IIH IIL VOH VOL Input logic level Input logic current Output logic level VIN = VDD VIN = 0 V IOH = -2 mA IOL = 2 mA fS = 44.1 kHz fS = 96 kHz fS = 192 kHz EIAJ, A-weighted, fS = 44.1 kHz Dynamic range EIAJ, A-weighted, fS = 96 kHz EIAJ, A-weighted, fS = 192 kHz EIAJ, A-weighted, fS = 44.1 kHz Signal-to-noise ratio EIAJ, A-weighted, fS = 96 kHz EIAJ, A-weighted, fS = 192 kHz Channel separation Level Linearity Error DYNAMIC PERFORMANCE (MONO MODE) (1)(2)(3) THD+N at VOUT = 0 dB fS = 44.1 kHz fS = 96 kHz fS = 192 kHz EIAJ, A-weighted, fS = 44.1 kHz Dynamic range EIAJ, A-weighted, fS = 96 kHz EIAJ, A-weighted, fS = 192 kHz EIAJ, A-weighted, fS = 44.1 kHz Signal-to-noise ratio EIAJ, A-weighted, fS = 96 kHz EIAJ, A-weighted, fS = 192 kHz 0.0005% 0.001% 0.0015% 126 126 126 126 126 126 dB dB fS = 44.1 kHz fS = 96 kHz fS = 192 kHz VOUT = -120 dB 116 120 120 2.4 0.4 0.0005% 0.001% 0.0015% 123 123 123 123 123 123 119 118 117 ±1 dB dB dB dB 0.001% TTL compatible 2 0.8 10 10 VDC µA VDC TEST CONDITIONS MIN TYP MAX UNIT
DYNAMIC PERFORMANCE (PCM MODE) (1)(2) THD+N at VOUT = 0 dB
(1) Filter condition: THD+N: 20-Hz HPF, 20-kHz AES17 LPF Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted Channel separation: 20-Hz HPF, 20-kHz AES17 LPF Analog performance specifications are measured using the System Twot Cascade audio measurement system by Audio Precision in the averaging mode. (2) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 36. (3) Dynamic performance and dc accuracy are specified at the output of the measurement circuit as shown in Figure 38.
Audio Precision and System Two are trademarks of Audio Precision, Inc. Other trademarks are the property of their respective owners. 3
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