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DAC7802LU Datasheet

  • DAC7802LU

  • Dual Monolithic CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CO...

  • 275.51KB

  • 17页

  • TI

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DAC7800
DAC7801
DAC7802
SBAS005A 鈥?DECEMBER 2001
Dual Monolithic CMOS 12-Bit Multiplying
DIGITAL-TO-ANALOG CONVERTERS
FEATURES
q
TWO DACs IN A 0.3" WIDE PACKAGE
q
SINGLE +5V SUPPLY
q
HIGH SPEED DIGITAL INTERFACE:
Serial鈥擠AC7800
8 + 4-Bit Parallel鈥擠AC7801
12-Bit Parallel鈥擠AC7802
q
MONOTONIC OVER TEMPERATURE
q
LOW CROSSTALK: 鈥?4dB min
q
FULLY SPECIFIED OVER 鈥?0
O
C TO +85
O
C
APPLICATIONS
q
PROCESS CONTROL OUTPUTS
q
ATE PIN ELECTRONICS LEVEL SETTING
q
PROGRAMMABLE FILTERS
q
PROGRAMMABLE GAIN CIRCUITS
q
AUTO-CALIBRATION CIRCUITS
DESCRIPTION
The DAC7800, DAC7801 and DAC7802 are members of a
new family of monolithic dual 12-bit CMOS multiplying Digi-
tal-to-Analog Converters (DACs). The digital interface speed
and the AC multiplying performance are achieved by using
an advanced CMOS process optimized for data conversion
circuits. High stability on-chip resistors provide true 12-bit
integral and differential linearity over the wide industrial
temperature range of 鈥?0掳C to +85掳C.
DAC7800 features a serial interface capable of clocking-in
data at a rate of at least 10MHz. Serial data is clocked (edge
triggered) MSB first into a 24-bit shift register and then
latched into each DAC separately or simultaneously as
required by the application. An asynchronous CLEAR control
is provided for power-on reset or system calibration func-
tions. It is packaged in a 16-pin 0.3" wide plastic DIP.
DAC7801 has a 2-byte (8 + 4) double-buffered interface.
Data is first loaded (level transferred) into the input registers
in two steps for each DAC. Then both DACs are updated
simultaneously. DAC7801 features an asynchronous CLEAR
control. DAC7801 is packaged in a 24-pin 0.3" wide plastic
DIP.
DAC7802 has a single-buffered 12-bit data word interface.
Parallel data is loaded (edge triggered) into the single DAC
register for each DAC. DAC7802 is packaged in a 24-pin 0.3"
wide plastic DIP.
12
DAC7802
12-Bit Interface
V
REF A
R
FB A
I
OUT A
CSA
CSB
12
12-Bit MDAC
DAC A
V
REF B
WR
AGND A
8
DAC7801
8-Bit Interface
8 Bits + 4 Bits
CLR
UPD
A0
WR
CS
A1
R
FB B
I
OUT B
12
12-Bit MDAC
DAC B
AGND B
Serial
DAC7800
Serial Interface
UPD A
UPD B
CLR
CLK
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.
www.ti.com
CS
Copyright 漏 1990, Texas Instruments Incorporated

DAC7802LU 产品属性

  • Data Converter Basics

  • 25

  • 集成电路 (IC)

  • 数据采集 - 数模转换器

  • -

  • 400ns

  • 12

  • 并联

  • 2

  • 单电源

  • -

  • -40°C ~ 85°C

  • 表面贴装

  • 24-SOIC（0.295"，7.50mm 宽）

  • 24-SOIC

  • 管件

  • 2 电流，单极；2 电流，双极

  • -

  • 296-12980-5DAC7802LU-ND

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