DAC7800_15 Datasheet, PDF (1/23 Pages) Texas Instruments – Dual Monolithic CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CONVERTERS

DAC7800
DAC7801
DAC7802
SBAS005B – JANUARY 1990 – REVISED FEBRUARY 2004
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—DAC7800
8 + 4-Bit Parallel—DAC7801
12-Bit Parallel—DAC7802
q MONOTONIC OVER TEMPERATURE
q LOW CROSSTALK: –94dB min
q FULLY SPECIFIED OVER –40^OC TO +85^OC
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 –40°C to +85°C.
The 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.
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"
APPLICATIONS
q PROCESS CONTROL OUTPUTS
q ATE PIN ELECTRONICS LEVEL SETTING
q PROGRAMMABLE FILTERS
q PROGRAMMABLE GAIN CIRCUITS
q AUTO-CALIBRATION CIRCUITS
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.
DAC7802
12 _{12-Bit Interface}
DAC7801
8 8-Bit Interface
8 Bits + 4 Bits
Serial
DAC7800
Serial Interface
V_{REF A}
12 ^{12-Bit MDAC}
DAC A
R_{FB A}
I_{OUT A}
AGND A
V_{REF B}
12 ^{12-Bit MDAC}
DAC B
R_{FB B}
I_{OUT B}
AGND B
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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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