|
|
Part: PCM1794ADB
Category:
Description: 24-Bit 192 KHZ Stereo Audio DAC
Company: Texas Instruments, Inc.
Datasheet: Download PCM1794ADB datasheet File size : 115 kB
Request For quote: Find where to buy PCM1794ADB
Datasheet text preview:
Burr Brown Products from Texas Instruments
PCM1794A
SLES117 AUGUST 2004
24 BIT, 192 kHz SAMPLING, ADVANCED SEGMENT, AUDIO STEREO DIGITAL TO ANALOG CONVERTER
FEATURES D 24-Bit Resolution D Analog Performance:
- Dynamic Range: 132 dB (9 V RMS, Mono) 129 dB (4.5 V RMS, Stereo) 127 dB (2 V RMS, Stereo) - THD+N: 0.0004%
D Dual-Supply Operation:
- 5-V Analog, 3.3-V Digital
D 5-V Tolerant Digital Inputs D Small 28-Lead SSOP Package, Lead-Free
Product
D Differential Current Output: 7.8 mA p-p D 8× Oversampling Digital Filter:
- Stop-Band Attenuation: 130 dB - Pass-Band Ripple: ±0.00001 dB
D Sampling Frequency: 10 kHz to 200 kHz D System Clock: 128, 192, 256, 384, 512, or
768 fS With Autodetect
APPLICATIONS D A/V Receivers D DVD Players D Musical Instruments D HDTV Receivers D Car Audio Systems D Digital Multitrack Recorders D Other Applications Requiring 24-Bit Audio DESCRIPTION
The PCM1794A 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 PCM1794A provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.
D Accepts 16- and 24-Bit Audio Data D PCM Data Formats: Standard, I2S, and
Left-Justified
D Optional Interface Available to External
Digital Filter or DSP
D D D D
Digital De-Emphasis Digital Filter Rolloff: Sharp or Slow Soft Mute Zero Flag
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
PCM1794A
www.ti.com SLES117 AUGUST 2004
ORDERING INFORMATION
PRODUCT PACKAGE PACKAGE CODE 28DB OPERATION TEMPERATURE RANGE 25°C to 85°C PACKAGE MARKING PCM1794A ORDERING NUMBER PCM1794ADB PCM1794ADBR TRANSPORT MEDIA Tube Tape and reel
PCM1794ADB
28-lead SSOP
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1) PCM1794A 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 250°C
Supply voltage differences: VCC1, VCC2L, VCC2R Ground voltage differences: AGND1, AGND2, AGND3L, AGND3R, DGND 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) LRCK, DATA, BCK, SCK, FMT1, FMT0, MONO, CHSL, DEM, MUTE, RST, ZERO
(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.
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 PCM1794ADB PARAMETER RESOLUTION DATA FORMAT Audio data interface format Audio data bit length Audio data format fS Sampling frequency System clock frequency 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 2.4 0.4 VDC 2 0.8 10 10 TTL compatible VDC µA Standard, I2S, left justified 16-, 24-bit selectable MSB first, 2s complement 10 200 kHz 128, 192, 256, 384, 512, 768 fS TEST CONDITIONS MIN TYP 24 MAX UNIT Bits
2
PCM1794A
www.ti.com SLES117 AUGUST 2004
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 PCM1794ADB PARAMETER DYNAMIC PERFORMANCE (2-V RMS OUTPUT) (1)(2) 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 Channel separation fS = 44.1 kHz fS = 96 kHz 120 123 123 0.0004% 0.0008% 0.0015% 127 127 127 127 127 127 123 122 120 ±1 0.0004% 0.0008% 0.0015% 129 129 129 129 129 129 124 123 121 0.0004% 0.0008% 0.0015% 132 132 132 132 132 132 dB dB dB dB dB dB dB dB dB 0.0008% TEST CONDITIONS MIN TYP MAX UNIT
fS = 192 kHz Level linearity error VOUT = 120 dB DYNAMIC PERFORMANCE (4.5-V RMS Output) (1)(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 Channel separation DYNAMIC PERFORMANCE (MONO MODE) (1)(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 fS = 44.1 kHz fS = 96 kHz fS = 192 kHz
(1) Filter condition: THD+N: 20-Hz HPF, 20-kHz apogee 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 24. (3) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 25.
Audio Precision and System Two are trademarks of Audio Precision, Inc. Other trademarks are the property of their respective owners. 3
Others parts begin by pc
PC-1 PC-2 PC-3 PC-4 PC-5 PC-6 PC-7 PC-8 PC-9 PC-10 PC-11 PC-12 PC-13 PC-14 PC-15 PC-16 PC-17 PC-18 PC-19 PC-20 PC-21
|
|
|
