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DAC7801 Datasheet

  • DAC7801

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

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廬
DAC7800
DAC7801
DAC7802
Dual Monolithic CMOS 12-Bit Multiplying
DIGITAL-TO-ANALOG CONVERTERS
FEATURES
q
TWO D/As 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 mem-
bers of a new family of monolithic dual 12-bit CMOS
multiplying digital-to-analog converters. 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 dif-
ferential linearity over the wide industrial temperature
range of 鈥?0
o
C to +85
o
C.
DAC7800 features a serial interface capable of clock-
ing-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 D/A 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.
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 D/A. Then
both D/As are updated simultaneously. DAC7801 fea-
tures 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 in-
terface. Parallel data is loaded (edge triggered) into the
single D/A register for each D/A. DAC7802 is pack-
aged 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
CS
UPD
A0
CLR
WR
A1
R
FB B
I
OUT B
12
12-Bit MDAC
DAC B
AGND B
Serial
DAC7800
Serial Interface
CLK
UPD A
UPD B
CLR
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
Internet: http://www.burr-brown.com/ 鈥?FAXLine: (800) 548-6133 (US/Canada Only) 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
廬
漏 1990 Burr-Brown Corporation
PDS-1079G
1
CS
Printed in
DAC7800, 01,
U.S.A. January, 1998
02

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