CONVERTERS. TLC5628I Datasheet

TLC5628I Datasheet PDF


Part

TLC5628I

Description

OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS

Manufacture

etcTI

Page 17 Pages
Datasheet
Download TLC5628I Datasheet


TLC5628I Datasheet
TLC5628C, TLC5628I
OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS
D Eight 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
SLAS089E – NOVEMBER 1994 – REVISED APRIL 1997
N OR DW PACKAGE
(TOP VIEW)
DACB
DACA
GND
DATA
CLK
VDD
DACE
DACF
1
2
3
4
5
6
7
8
16 DACC
15 DACD
14 REF1
13 LDAC
12 LOAD
11 REF2
10 DACH
9 DACG
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 TLC5628C and TLC5628I are octal 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 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 TLC5628C and TLC5628I are over a simple three-wire serial bus that is CMOS compatible
and easily interfaced to all popular microprocessor and microcontroller devices. The 12-bit command word
comprises eight bits of data, three 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 LDAC. The digital
inputs feature Schmitt triggers for high-noise immunity.
The 16-terminal small-outline (D) package allows digital control of analog functions in space-critical
applications. The TLC5628C is characterized for operation from 0°C to 70°C. The TLC5628I is characterized
for operation from – 40°C to 85°C. The TLC5628C and TLC5628I do not require external trimming.
AVAILABLE OPTIONS
PACKAGE
TA
SMALL OUTLINE
(DW)
0°C to 70°C
TLC5628CDW
– 40°C to 85°C
TLC5628IDW
PLASTIC DIP
(N)
TLC5628CN
TLC5628IN
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.
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 © 1997, Texas Instruments Incorporated
1

TLC5628I Datasheet
TLC5628C, TLC5628I
OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS089E – NOVEMBER 1994 – REVISED APRIL 1997
functional block diagram
REF1 14 +
9 Latch
Latch
8
DAC
×2
+
2
DACA
REF2 11 +
Latch
Latch
Latch
Latch
DAC
8
DAC
8
×2
×2
+
15
DACD
+7
DACE
CLK
DATA
LOAD
5
4
12
Latch
Latch
Serial
Interface
13
LDAC
DAC
8
×2
Power-On
Reset
+ 10
DACH
Terminal Functions
TERMINAL
NAME NO.
CLK 5
DACA
DACB
DACC
DACD
DACE
DACF
DACG
DACH
DATA
2
1
16
15
7
8
9
10
4
GND
LDAC
3
13
LOAD
12
REF1
REF2
VDD
14
11
6
I/O DESCRIPTION
I Serial interface clock. The input digital data is shifted into the serial interface register on the falling edge of the clock
applied to the CLK terminal.
O DAC A analog output
O DAC B analog output
O DAC C analog output
O DAC D analog output
O DAC E analog output
O DAC F analog output
O DAC G analog output
O DAC H analog output
I Serial interface digital data input. The digital code for the DAC is clocked into the serial interface register serially.
Each data bit is clocked into the register on the falling edge of the clock signal.
I Ground return and reference terminal
I Load DAC. When LDAC is high, no DAC output updates occur when the input digital data is read into the serial
interface. The DAC outputs are only updated when LDAC is taken from high to low.
I Serial interface load control. When LDAC is low, the falling edge of the LOAD signal latches the digital data into
the output latch and immediately produces the analog voltage at the DAC output terminal.
I Reference voltage input to DAC ABCD. This voltage defines the analog output range.
I Reference voltage input to DAC EFGH. This voltage defines the analog output range.
I Positive supply voltage
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features Datasheet pdf TLC5628C, TLC5628I OCTAL 8-BIT DIGITAL-T O-ANALOG CONVERTERS D Eight 8-Bit Volt age Output DACs D 5-V Single-Supply Ope ration D Serial Interface D High-Impeda nce Reference Inputs D Programmable 1 o r 2 Times Output Range D Simultaneous U pdate Facility D Internal Power-On Rese t D Low-Power Consumption D Half-Buffer ed Output SLAS089E – NOVEMBER 1994 REVISED APRIL 1997 N OR DW PACKAGE ( TOP VIEW) DACB DACA GND DATA CLK VDD D ACE DACF 1 2 3 4 5 6 7 8 16 DACC 15 D ACD 14 REF1 13 LDAC 12 LOAD 11 REF2 10 DACH 9 DACG applications D Programmabl e Voltage Sources D Digitally Controlle d Amplifiers/Attenuators D Mobile Commu nications D Automatic Test Equipment D Process Monitoring and Control D Signal Synthesis description The TLC5628C a nd TLC5628I are octal 8-bit voltage out put digital-to-analog converters (DACs) with buffered reference inputs (high i mpedance). The DACs produce an output v oltage that ranges between either one o r two times the reference voltages and GND and are monotonic. The d.
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