MP75L45
Low Voltage CMOS
Buffered Multiplying 12-Bit
Digital-to-Analog Converter
FEATURES
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3.3 V Operation
Full Four Quadrant Multiplication
12-Bit Resolution
Latch-Up Free
Extremely Low Power CMOS: 0.3 mW (typ.)
APPLICATIONS
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Disk Drive Servo Systems
Digital/Synchro Conversion
Programmable Gain Amplifiers
Ratiometric A/D Conversion
Function Generation
Digitally Controlled Filters
GENERAL DESCRIPTION
The MP75L45 is a 12-bit CMOS multiplying Digital-to-Analog
Converter with on-board data latches. It is loaded by a single
12-bit wide word and interfaces directly to most 12- and 16-bit
bus systems. Data is loaded into the input latches under the
control of the CS and WR inputs; tying these control inputs low
makes the input latches transparent, allowing direct unbuffered
operation of the DAC.
The MP75L45 is particularly suitable for single supply opera-
tion and applications with wide temperature variations.
Specified for operation over the commercial / industrial (–40
to +85
°
C) temperature range, the MP75L45 is available in Plas-
tic dual-in-line (PDIP), Surface Mount (SOIC), and Shrunk Small
(SSOP) outline packages.
SIMPLIFIED BLOCK DIAGRAM
R
FB
V
REF
12-Bit
Multiplying DAC
12
I
OUT
AGND
WR
CS
Input Data
Latches
V
DD
DGND
12
DB11-DB0
(Pins 4-15)
Rev. 1.00
1
EXAR [ EXAR CORPORATION ]
