TCM38C17IDL Datasheet, PDF (1/22 Pages) Texas Instruments – QComboE FOUR-CHANNEL QUAD PCM COMBO

TCM38C17IDL
QCombo™ FOUR-CHANNEL (QUAD) PCM COMBO
SLWS040C – JUNE 1996 – REVISED OCTOBER 1999
D Single 5-V Supply
DL PACKAGE
D Replaces Four TCM29C13-Type Combos
(TOP VIEW)
(CODEC and Filters)
D Meets CCITT/(D3/D4) G.711 and G.714
Channel Bank Specifications
D Advanced Switched-Capacitor Filters and
Sigma-Delta A/D and D/A Converter
Technology With DSP Filtering
D µ-Law or A-Law Companding —
Pin-Selectable
D 2.048 MHz Operation
RBIAS 1
AREF 2
AVSS 3
0GSX 4
0ANLGIN – 5
0ANLGIN+ 6
0PWRO+ 7
0GSR 8
0PWRO – 9
48 REFLTR1
47 REFLTR2
46 AVDD
45 2GSX
44 2ANLGIN –
43 2ANLGIN+
42 2PWRO+
41 2GSR
40 2PWRO –
D 8 Vpp Full-Signal Differential Receiver
1GSX 10
39 3GSX
Output
1ANLGIN – 11
38 3ANLGIN –
D Differential Signal Processing Architecture
D Low Crosstalk (< –100 dB),
Low Idle-Channel Noise, and
Good Power Supply Rejection
D Single PCM I/O for Simplified PCM Interface
D Reliable Submicron Silicon-Gate CMOS
1ANLGIN+ 12
1PWRO+ 13
1GSR 14
1PWRO – 15
0PDN 16
1PDN 17
VSS ¹⁸
37 3ANLGIN+
36 3PWRO+
35 3GSR
34 3PWRO –
33 3PDN
32 2PDN
31 _0FS
Technology
DVSS ¹⁹
30 _1FS
DVDD ²⁰
29 _2FS
description
DVDDPLL ²¹
MCLK ²²
28 _3FS
27 _PCMOUT
The TCM38C17IDL QCombo™ is a 4-channel
single-chip PCM combo (pulse-code-modulated
DVSSPLL ²³
ASEL ²⁴
26 _RESET
25 _PCMIN
CODEC with a voice-band filtering) device. It
performs the transmit encoding (A/D conversion)
and receive decoding (D/A conversion), as well as the transmit and receive filtering functions required to meet
CCITT G.711 and G.714 specifications in a PCM system. Each channel provides all the functions required to
interface a full-duplex, 4-line voice telephone circuit with a TDM (time-division-multiplexed) system. The
TCM38C17IDL is specifically designed for fixed-data-rate applications and is intended to replace four
TCM29C13-type devices.
Primary applications include digital transmission and switching of E1 carrier, PABX (private automatic branch
exchange), and central office telephone systems and subscriber line concentrators. The device serves as the
analog termination of a PCM line or trunk to the POTS (plain old telephone system) local-loop line.
Other applications include any PCM digital-audio interface such as voice-band data storage systems and many
digital signal processing applications that can benefit from the reduced footprint of a quad codec configuration
and single-rail operation. Dynamic range and excellent idle-channel noise performance are maintained using
the TI advanced 4Vt process technologies.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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.
TI and QCombo are registered trademarks of Texas Instruments, Inc.
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 © 1999, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1