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PDF PCM1794A Data sheet ( Hoja de datos )
| Número de pieza | PCM1794A | |
| Descripción | audio stereo digital-to-analog converter | |
| Fabricantes | Burr-Brown | |
| Logotipo |  |
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BurrĆBrown Products
from Texas Instruments
PCM1794A
SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
24ĆBIT, 192ĆkHz SAMPLING, ADVANCED SEGMENT,
AUDIO STEREO DIGITALĆTOĆANALOG CONVERTER
www.DataSheet4U.com
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 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
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 Digital De-Emphasis
D Digital Filter Rolloff: Sharp or Slow
D Soft Mute
D Zero Flag
D Dual-Supply Operation:
− 5-V Analog, 3.3-V Digital
D 5-V Tolerant Digital Inputs
D Small 28-Lead SSOP Package
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.
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 2006, Texas Instruments Incorporated
1 page  
www.ti.com
PIN ASSIGNMENTS
PCM1794A
SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
MONO
CHSL
DEM
LRCK
DATA
BCK
SCK
DGND
VDD
MUTE
FMT0
FMT1
ZERO
RST
PCM1794A
(TOP VIEW)
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC2L
AGND3L
IOUTL–
IOUTL+
AGND2
VCC1
VCOML
VCOMR
IREF
AGND1
IOUTR–
IOUTR+
AGND3R
VCC2R
5
5 Page 
www.ti.com
Temperature Characteristics
TOTAL HARMONIC DISTORTION + NOISE
vs
FREE-AIR TEMPERATURE
0.01
0.001
fS = 192 kHz
fS = 96 kHz
fS = 48 kHz
0.0001
−50
−25 0
25 50 75
TA – Free-Air Temperature – °C
Figure 11
100
PCM1794A
SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
DYNAMIC RANGE
vs
FREE-AIR TEMPERATURE
132
130 fS = 96 kHz
128 fS = 48 kHz
fS = 192 kHz
126
124
122
−50
−25 0
25 50 75
TA – Free-Air Temperature – °C
Figure 12
100
SIGNAL-to-NOISE RATIO
vs
FREE-AIR TEMPERATURE
132
CHANNEL SEPARATION
vs
FREE-AIR TEMPERATURE
130
130
fS = 96 kHz
128
fS = 192 kHz
fS = 48 kHz
126
124
128
126
124 fS = 192 kHz
fS = 48 kHz
fS = 96 kHz
122
122
−50
−25 0
25 50 75
TA – Free-Air Temperature – °C
Figure 13
100
120
−50
NOTE: VDD = 3.3 V, VCC = 5 V, measurement circuit is Figure 25 (VOUT = 4.5 V rms).
−25 0
25 50 75
TA – Free-Air Temperature – °C
Figure 14
100
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PCM1794A.PDF ] | |
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