TLC32071 Datasheet, PDF (1/15 Pages) Texas Instruments – HIGH-SPEED 8-BIT A/D AND D/A CONVERTER WITH 8-CHANNEL MULTIPLEXER

TLC32071
HIGHĆSPEED 8ĆBIT A/D AND D/A CONVERTER
WITH 8ĆCHANNEL MULTIPLEXER
SLAS051−D3973, DECEMBER 1991
• Advanced LinCMOS Technology
• 8-Bit Analog-to-Digital Converter
• 8-Bit Digital-to-Analog Converter
• Monotonic Over Entire Analog-to-Digital
and Digital-to-Analog Conversion Range
• 8-Input Analog Multiplexer With Latched
Channel Select
• Programmable Input Range on Two Input
Amplifiers
• Interfaces Directly to Many Digital Signal
Processors Including the TMS320 Family
• Low-Glitch Impulse at DAC Output
• Built-In Scaling and Level Shifting on Six of
the Analog Inputs
• Designed for Servo-Loop Control Systems
Including Disk Drives
N PACKAGE
(TOP VIEW)
ANAOUT ₁
RESET ₂
CSAN ₃
CSCNTRL ₄
DEN ₅
WE ₆
D7 7
D6 8
D5 9
D4 10
D3 11
D2 12
D1 13
D0 14
28 ^REF
27 ^V_CC
26 ^A2
25 ^{ANLG COM}
24 ^A5
23 ^A4
22 A3
21 A1
20 A7
19 A0
18 A6
17 ANLG GND
16 DGTL GND
15 V_DD
FN PACKAGE
(TOP VIEW)
description
The TLC32071 is an analog interface integrated
circuit that converts between the analog and
digital domains. The device includes an 8-bit
voltage-output digital-to-analog converter (DAC),
an 8-bit analog-to-digital converter (ADC), an
analog input multiplexer with eight analog inputs,
an output reference MUX, and a high-speed 8-bit
bidirectional data bus that interfaces directly to the
TMS320 family of digital signal processors. The
reset input (RESET) is used to clear the DAC and
control registers. The 8-bit DAC converts digital
signals to the equivalent analog values. The DAC
is followed by a level shifter, which adjusts the
center of the DAC output range to the voltage
externally applied to the ANLG COM input. One of
three output ranges can be selected by an internal
register.
DEN
WE
D7
D6
D5
D4
D3
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
ANLG COM
A5
A4
A3
A1
A7
A0
The 8-bit ADC converts any one of eight analog inputs selected by a programmable internal register through
an input multiplexer. Six of these have inverting inputs with built-in level shifting so that these six output ranges
are centered at the ADC input voltage midpoint. Two of the six inputs have register selectable gains. The first
conversion result after selection of one of the six inverting inputs should be discarded as invalid. The two
remaining inputs are direct inputs to the ADC multiplexer with output ranges centered at the internal 2.5-V
reference (V_ref). After reset, this reference is available at the REF output. The REF output can also be
programmed by an internal control register to provide access to other internal references, any of the analog
inputs after scaling and shifting, or the unscaled output of the DAC.
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  1991, Texas Instruments Incorporated
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