TLC5620C, TLC5620I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS081C – NOVEMBER 1994 – REVISED FEBRUARY 1996
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
D
Four 8-Bit Voltage Output DACs
D
5-V Single-Supply Operation
D
Serial Interface
D
High-Impedance Reference Inputs
D
Programmable 1 or 2 Times Output Range
D
Simultaneous-Update Facility
D
Internal Power-On Reset
D
Low Power Consumption
D
Half-Buffered Output
applications
D
Programmable Voltage Sources
D
Digitally-Controlled Amplifiers/Attenuators
D
Mobile Communications
D
Automatic Test Equipment
D
Process Monitoring and Control
D
Signal Synthesis
description
The TLC5620C and TLC5620I are quadruple 8-bit voltage output digital-to-analog converters (DACs) with
buffered reference inputs (high impedance). The DACs produce an output voltage that ranges between either
one or two times the reference voltages and GND, and the DACs are monotonic. The device is simple to use,
running from a single supply of 5 V. A power-on reset function is incorporated to ensure repeatable start-up
conditions.
Digital control of the TLC5620C and TLC5620I are over a simple 3-wire serial bus that is CMOS compatible and
easily interfaced to all popular microprocessor and microcontroller devices. The 11-bit command word
comprises 8 bits of data, 2 DAC select bits and a range bit, the latter allowing selection between the times 1
or times 2 output range. The DAC registers are double buffered, allowing a complete set of new values to be
written to the device, then all DAC outputs are updated simultaneously through control of the LDAC terminal.
The digital inputs feature Schmitt triggers for high noise immunity.
The 14-terminal small-outline (D) package allows digital control of analog functions in space-critical
applications. The TLC5620C is characterized for operation from 0°C to 70°C. The TLC5620I is characterized
for operation from –40°C to 85°C. The TLC5620C and TLC5620I do not require external trimming.
AVAILABLE OPTIONS
PACKAGE
T
A
SMALL OUTLINE
(D)
PLASTIC DIP
(N)
0°C to 70°C TLC5620CD TLC5620CN
–40°C to 85°C TLC5620ID TLC5620IN
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.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
GND
REFA
REFB
REFC
REFD
DATA
CLK
V
DD
LDAC
DACA
DACB
DACC
DACD
LOAD
N OR D PACKAGE
(TOP VIEW)
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 1996, Texas Instruments Incorporated
