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Burr-Brown Corporation

PCM1740 Datasheet Preview

PCM1740 Datasheet

Stereo Audio DIGITAL-TO-ANALOG CONVERTER

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PCM1740
PCM1740
SBAS128B – JANUARY 2000 – REVISED MAY 2007
TM Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
with VCXO and PLL
FEATURES
APPLICATIONS
q COMPLETE DELTA-SIGMA STEREO DAC
q SET-TOP BOXES
q VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR:
27MHz ±150ppm Output with 0V to 3V Input
q DIGITAL BROADCAST RECEIVERS
q PROGRAMMABLE PLL
256fS or 384fS Audio System Clock Output
q DYNAMIC PERFORMANCE:
Dynamic Range: 94dB
SNR: 94dB
THD+N: –89dB
q SAMPLING FREQUENCIES:
16kHz, 22.05kHz, 24kHz
32kHz, 44.1kHz, 48kHz
64kHz, 88.2kHz, 96kHz
q SERIAL AUDIO INTERFACE:
Standard or I2S™ Data Formats
16-, 20-, or 24-Bit Data
DESCRIPTION
The PCM1740 is a complete stereo audio digital-to-
analog converter with on-chip PLL and VCXO. The
PCM1740 is designed specifically for set-top box applica-
tions requiring high-quality audio playback, a precision
tuned 27MHz master clock source, and support for mul-
tiple audio-sampling frequencies.
The stereo digital-to-analog converter (DAC) uses multi-
bit, delta-sigma architecture, which includes an 8x inter-
polation filter, 3rd-order noise shaping, 5-level amplitude
quantization, and an analog low-pass filter. The PCM1740
includes a number of user-programmable functions, which
are accessed via a standard I2C-Bus interface.
q I2C-BUS™ INTERFACE FOR CONTROL
REGISTERS:
Slave Receiver Operation
7-Bit Addressing
Standard Transfer Rate (up to 100kbps)
q PROGRAMMABLE CONTROLS:
Digital Attenuation (256 steps)
Soft Mute
Infinite Zero Detect Mute
De-Emphasis (32kHz, 44.1kHz, 48kHz)
DAC Output Mode
q SINGLE +5V SUPPLY
q SMALL SSOP-24 PACKAGE
BCK
LRCK
DATA
PCM
Audio
I/F
SCL
SDA
AD1
AD0
XTUN
27MHz
Crystal
XT1
XT2
RST
I2C
I/F
and
REGs
VCXO
8x
Oversampling
Digital Filter
and
Sub-Functions
Process
DAC
(L)
DAC
(R)
Low-Pass
Filter
and Amp
Counter N
Counter M
Phase
Detector
LPF
VCO
Reset
Power Supply
VOUTL
VCOM
VOUTR
ZERO
SCKO
(256fS/ 384fS)
MCKO
(27MHz)
VPP PGND VCC AGND VDD DGND
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.
SoundPLUS is a trademark of Texas Instruments.
I2C-Bus, I2C, and I2S are trademarks of NXP B.V.
All other 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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 2000-2007, Texas Instruments Incorporated




Burr-Brown Corporation

PCM1740 Datasheet Preview

PCM1740 Datasheet

Stereo Audio DIGITAL-TO-ANALOG CONVERTER

No Preview Available !

ABSOLUTE MAXIMUM RATINGS(1)
Power Supply Voltage(2) ................................................................... +6.5V
Supply Voltage Differences(3) ........................................................... ±0.1V
GND Voltage Differences(4) .............................................................. ±0.1V
Digital Input Voltage ................................................. –0.3V to (VDD + 0.3V)
Analog Input Voltage ................................................ –0.3V to (VCC + 0.3V)
Input Current (any pins except supplies) ........................................ ±10mA
Operating Temperature Range ......................................... –25°C to +85°C
Storage Temperature ...................................................... –55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 5s) .................................................. +260°C
Package Temperature (IR reflow, peak, 10s) ................................ +235°C
NOTES: (1) Stresses above those listed under Absolute Maximum Ratings may
cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability. (2) VCC, VDD, VPP.
(3) Among VCC, VDD, VPP. (4) Among AGND, DGND, and PGND.
ELECTROSTATIC
DISCHARGE SENSITIVITY
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 degrada-
tion 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.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
PCM1740E
"
PACKAGE-LEAD
SSOP-24
"
PACKAGE
DESIGNATOR
DB
"
SPECIFIED
TEMPERATURE
RANGE
–25°C to +85°C
"
PACKAGE
MARKING
PCM1740E
PCM1740E
ORDERING
NUMBER
PCM1740E
PCM1740E/2K
TRANSPORT
MEDIA
Rails, 58
Tape and Reel, 2000
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this data sheet, or see the TI website at www.ti.com.
PIN CONFIGURATION
Top View
XT1 1
PGND 2
XTUN 3
VPP 4
MCKO 5
AD0 6
AD1 7
SCL 8
SDA 9
RST 10
VOUTR 11
AGND 12
PCM1740
SSOP
24 XT2
23 DGND
22 VDD
21 SCKO
20 RSV
19 LRCK
18 DATA
17 BCK
16 ZERO
15 VCOM
14 VOUTL
13 VCC
PIN ASSIGNMENTS
PIN NAME I/O FUNCTION
1 XT1
— 27MHz Crystal connection.
2 PGND — PLL and VCXO ground.
3 XTUN IN VCXO tune, tuning voltage range from 0V to 3V.
4 VPP
— PLL and VCXO power supply, +5V.
5 MCKO OUT Buffered clock output of VCXO.
6 AD0
IN Device address pin for I2C-BUS.(1)
7 AD1
IN Device address pin for I2C-BUS.(1)
8 SCL
IN Bit clock input for I2C-BUS interface.
9 SDA IN/OUT Serial data for I2C-BUS interface.
10 RST
IN Reset, active LOW.(2)
11 VOUTR OUT Right-channel analog voltage output.
12 AGND — Analog ground.
13 VCC
— Analog power supply, +5V.
14 VOUTL OUT Left-channel analog voltage output.
15 VCOM
— DC common-mode voltage output.
16 ZERO OUT Zero flag output, active LOW.(3)
17 BCK
IN Bit clock input for serial audio data.(1)
18 DATA
IN Serial audio data input.(1)
19 LRCK
20 RSV
IN Left and right word clock, equal to the sampling
rate (fS).(1)
— Reserved must be open.
21 SCKO OUT System clock output, 256/384 fS.
22 VDD
— Digital power supply, +5V.
23 DGND — Digital ground.
24 XT2
— 27MHz Crystal connection.
NOTES: (1) Schmitt trigger input.
(2) Schmitt trigger input with internal pull-up resistor.
(3) Open drain output.
2 PCM1740
www.ti.com
SBAS128B


Part Number PCM1740
Description Stereo Audio DIGITAL-TO-ANALOG CONVERTER
Maker Burr-Brown Corporation
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PCM1740 Datasheet PDF






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