DAC7800
DAC7801
DAC7802
SBAS005B – JANUARY 1990 – REVISED FEBRUARY 2004
Dual Monolithic CMOS 12-Bit Multiplying
DIGITAL-TO-ANALOG CONVERTERS
FEATURES
APPLICATIONS
q TWO DACs IN A 0.3" WIDE PACKAGE
q SINGLE +5V SUPPLY
q HIGH-SPEED DIGITAL INTERFACE:
Serial—DAC7800
8 + 4-Bit Parallel—DAC7801
12-Bit Parallel—DAC7802
q MONOTONIC OVER TEMPERATURE
q LOW CROSSTALK: –94dB min
q FULLY SPECIFIED OVER –40OC TO +85OC
q
q
q
q
q
PROCESS CONTROL OUTPUTS
ATE PIN ELECTRONICS LEVEL SETTING
PROGRAMMABLE FILTERS
PROGRAMMABLE GAIN CIRCUITS
AUTO-CALIBRATION CIRCUITS
DESCRIPTION
wide plastic DIP. The DAC7802 has a single-buffered 12-bit
data word interface. Parallel data is loaded (edge triggered)
into the single DAC register for each DAC. The DAC7802 is
packaged in a 24-pin 0.3" wide plastic DIP.
12
VREF A
RFB A
CSB
WR
12
12-Bit MDAC
DAC A
VREF B
AGND A
RFB B
IOUT B
A1
UPD
A0
WR
CS
CLR
DAC7801
8-Bit Interface
8 Bits + 4 Bits
8
12
12-Bit MDAC
DAC B
AGND B
CS
CLR
UPD B
DAC7800
Serial Interface
CLK
Serial
CSA
IOUT A
The DAC7800 features a serial interface capable of clockingin 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 functions. It is packaged in a 16-pin 0.3" wide plastic DIP.
The 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. The DAC7801 features an asynchronous
CLEAR control. The DAC7801 is packaged in a 24-pin 0.3"
DAC7802
12-Bit Interface
UPD A
The DAC7800, DAC7801 and DAC7802 are members of a
new family of monolithic dual 12-bit CMOS multiplying Digital-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 –40°C to +85°C.
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.
All trademarks are the property of their respective owners.
Copyright © 1990-2004, 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.
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