TLC32040M Datasheet, PDF (1/30 Pages) Texas Instruments – ANALOG INTERFACE CIRCUIT

TLC32040M
ANALOG INTERFACE CIRCUIT
• Advanced LinCMOS™ Silicon-Gate Process
Technology
• 14-Bit Dynamic Range ADC and DAC
• Variable ADC and DAC Sampling Rate up to
19 200 Samples Per Second
• Switched-Capacitor Antialiasing Input Filter
and Output-Reconstruction Filter
• Serial Port for Direct Interface to
SMJ320E14, SMJ32020, SMJ320C25, and
SMJ320C30 Digital Processors
• Synchronous or Asynchronous ADC and
DAC Conversion Rates With Programmable
Incremental ADC and DAC Conversion
Timing Adjustments
• Serial Port Interface to SN54299
Serial-to-Parallel Shift Register for Parallel
Interface to SMJ320C10, SMJ320C15,
SMJ320E15, or Other Digital Processors
description
J PACKAGE
(TOP VIEW)
SGLS031 – MAY 1990
NU ₁
RESET ₂
EODR ₃
FSR ₄
DR ₅
MSTR CLK 6
V_DD 7
REF 8
DGTL GND 9
SHIFT CLK 10
EODX 11
DX 12
WORD/BYTE 13
FSX 14
28 ^NU
27 ^NU
26 ^{IN +}
25 ^{IN –}
24 ^{AUX IN +}
23 ^{AUX IN –}
22 OUT +
21 OUT –
20 V_{CC +}
19 V_{CC –}
18 ANLG GND
17 ANLG GND
16 NU
15 NU
FK PACKAGE
(TOP VIEW)
The TLC32040M interface circuit is a complete
analog-to-digital and digital-to-analog input/
output system on a single monolithic CMOS
chip. This device integrates a band-pass
switched-capacitor antialiasing input filter, a
14-bit-resolution A/D converter, four
microprocessor-compatible serial port modes, a
14-bit-resolution D/A converter, and a low-pass
switched-capacitor output reconstruction filter.
The device offers numerous combinations of
master clock input frequencies and conversion/
sampling rates, which can be changed via digital
processor control.
DR
MSTR CLK
V_DD
REF
DGTL GND
SHIFT CLK
EODX
4 3 2 1 28 27 26
5
25
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
IN –
AUX IN +
AUX IN –
OUT +
OUT –
V_{CC +}
V_{CC –}
Typical applications for this integrated circuit
include modems (7.2-, 8-, 9.6-, 14.4-, and
19.2-kHz sampling rate), analog interface for
digital signal processors (DSPs), speech recognition/stoNraUg–eNosnyusstaebmles; n,oinedxtuesrntarilaclopnnroeccteiosnsshcoounldtrboel,mbaidoemtoedical
instrumentation, acoustical signal processing, spectral an^ta^hl^ey^ss^eis^p,^insd^. ata acquisition, and instrumentation
recorders. Four serial modes, which allow direct interface to the SMJ320E14, SMJ32020, SMJ320C25, and
SMJ320C30 digital signal processors, are provided. Also, when the transmit and receive sections of the analog
interface circuit (AIC) are operating synchronously, it will interface to two SN54299 serial-to-parallel shift
registers.These serial-to-parallel shift registers can then interface in parallel to the SMJ320C10, SMJ320C15,
SMJ320E15, other digital signal processors, or external FIFO circuitry. Output data pulses are emitted to inform
the processor that data transmission is complete or to allow the DSP to differentiate between two transmitted
bytes. A flexible control scheme is provided so that the functions of the integrated circuit can be selected and
adjusted coincidentally with signal processing via software control.
Advanced LinCMOS is a trademark of Texas Instruments Incorporated.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1990, Texas Instruments Incorporated
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