10-10
August 1997
AD7545
12-Bit, Buffered, Multiplying CMOS DAC
Features
• 12-Bit Resolution
• Low Gain T.C. 2ppm/
o
C (Typ)
• Fast TTL/CMOS Compatible Data Latches
• Single +5V to +15V Supply
• Low Power
• Low Cost
• /883 Processed Versions Available
Description
The AD7545 is a low cost monolithic 12-bit, CMOS
multiplying DAC with on-board data latches. Data is loaded
in a single 12-bit wide word which allows interfacing directly
to most 12-bit and 16-bit bus systems. Loading of the input
latches is under the control of the CS and WR inputs. A logic
low on these control inputs makes the input latches transpar-
ent allowing direct unbuffered operation of the DAC.
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C) PACKAGE
PKG.
NO.
AD7545JN 0 to 70 20 Ld PDIP E20.3
AD7545KN 0 to 70 20 Ld PDIP E20.3
AD7545AN -40 to 85 20 Ld PDIP E20.3
AD7545BN -40 to 85 20 Ld PDIP E20.3
Pinout
AD7545
(PDIP)
TOP VIEW
Functional Diagram
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1OUT 1
AGND
DGND
DB11 (MSB)
DB10
DB9
DB7
DB8
DB6
DB5
R
FB
V
DD
WR
CS
V
REF
DB0 (LSB)
DB1
DB2
DB3
DB4
12-BIT
MULTIPLYING DAC
DB11 - DB0
(PINS 4 - 15)
12
12
INPUT DATA LATCHES
19
17
16
2
1
3
18
20
R
FB
R
OUT1
AGND
V
DD
DGND
V
REF
WR
CS
AD7545
File Number 3108.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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