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PCM1748 Datasheet Preview

PCM1748 Datasheet

Audio Digital-to-Analog Converter

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PCM1748
www.ti.com
SBAS165B – MAY 2001 – REVISED APRIL 2005
24-Bit, 96-kHz Sampling, Enhanced Multilevel, Delta-Sigma,
Audio Digital-to-Analog Converter
FEATURES
24-Bit Resolution
Analog Performance (VCC = 5 V):
– Dynamic Range:
106 dB, Typical (PCM1748KE)
100 dB, Typical (PCM1748E)
– SNR:
106 dB, Typical (PCM1748KE)
100 dB, Typical (PCM1748E)
– THD+N:
0.002%, Typical (PCM1748KE)
0.003%, Typical (PCM1748E)
– Full-Scale Output: 3.1 Vp-p, Typical
8× Oversampling Digital Filter:
– Stop-Band Attenuation: –55 dB
– Pass-Band Ripple: ±0.03 dB
Sampling Frequency: 5 kHz to 100 kHz
System Clock: 256 fS, 384 fS, 512 fS, 768 fS
With Autodetect
Accepts 16-, 18-, 20-, and 24-Bit Audio Data
Data Formats: Standard, I2S, and
Left-Justified
User-Programmable Mode Controls:
– Digital Attenuation: 0 dB to –63 dB,
0.5 dB/Step
– Digital De-Emphasis
– Digital Filter Rolloff: Sharp or Slow
– Soft Mute
– Zero Flags for Each Output
Dual-Supply Operation:
– 5-V Analog
– 3.3-V Digital
5-V Tolerant Digital Inputs
Small SSOP-16 Package
APPLICATIONS
AV Receivers
DVD Movie Players
DVD Add-On Cards for High-End PCs
HDTV Receivers
Car Audio Systems
Other Applications Requiring 24-Bit Audio
DESCRIPTION
The PCM1748 is a CMOS, monolithic, integrated
circuit which includes stereo digital-to-analog con-
verters (DAC) and support circuitry in a small
SSOP-16 package. The data converters use Texas
Instruments' enhanced multilevel delta-sigma archi-
tecture that employs fourth-order noise shaping and
8-level amplitude quantization to achieve excellent
dynamic performance and improved tolerance to
clock jitter. The PCM1748 accepts industry-standard
audio data formats with 16- to 24-bit data, providing
easy interfacing to audio DSP and decoder chips.
Sampling rates up to 100 kHz are supported. A full
set of user-programmable functions is accessible
through a 3-wire serial-control port that supports
register write functions.
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.
FilterPro is a trademark of Texas Instruments.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2001–2005, Texas Instruments Incorporated




etcTI

PCM1748 Datasheet Preview

PCM1748 Datasheet

Audio Digital-to-Analog Converter

No Preview Available !

PCM1748
SBAS165B – MAY 2001 – REVISED APRIL 2005
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
www.ti.com
Power supply voltage, VDD
Power supply voltage, VCC
Supply voltage difference, VCC, VDD
Ground voltage differences
Digital input voltage
Input current (except power supply)
Ambient temperature under bias
Storage temperature, Tstg
Junction temperature, TJ
Lead temperature (soldering)
Package temperature (IR reflow, peak)
–0.3 to 4 V
–0.3 to 6.5 V
VCC – VDD < 3 V
±0.1 V
–0.3 V to 6.5 V
±10 mA
–40°C to 125°C
–55°C to 150°C
150°C
260°C, 5 s
235°C
(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.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range
Digital supply voltage, VDD
Analog supply voltage, VCC
Digital input logic family
Digital input clock frequency
Analog output load resistance
Analog output load capacitance
Digital output load capacitance
Operating free-air temperature, TA
System clock
Sampling clock
MIN
3
4.5
8.192
32
5
–25
NOM
3.3
5
TTL
MAX
3.6
5.5
UNIT
V
V
36.864
96
50
20
85
MHz
kHz
k
pF
pF
°C
ELECTRICAL CHARACTERISTICS
All specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, fS = 44.1 kHz, system clock = 384 fS, and 24-bit data, unless otherwise
noted
PARAMETER
RESOLUTION
DATA FORMAT
Audio data interface formats
Audio data bit length
Audio data format
fS Sampling frequency
System clock frequency
DIGITAL INPUT/OUTPUT
Logic family
Input Logic Level
VIH High-level input votlage
VIL Low-level input voltage
TEST CONDITIONS
MIN TYP MAX UNIT
24 Bits
Standard, I2S, left-justified
16-, 18-, 20-, 24-bit selectable
MSB-first, binary 2s complement
5 100
256 fS, 384 fS, 512 fS, 768 fS
kHz
TTL-compatible
2 VDC
0.8 VDC
2


Part Number PCM1748
Description Audio Digital-to-Analog Converter
Maker etcTI
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PCM1748 Datasheet PDF






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