CMOS Low Cost,
10-Bit Multiplying DAC
AD7533
FEATURES
Low cost 10-bit DAC
Low cost AD7520 replacement
Linearity: ½ LSB, 1 LSB, or 2 LSB
Low power dissipation
Full 4-quadrant multiplying DAC
CMOS/TTL direct interface
Latch free (protection Schottky not required)
Endpoint linearity
GENERAL DESCRIPTION
The AD7533 is a low cost, 10-bit, 4-quadrant multiplying DAC
manufactured using an advanced thin-film-on-monolithic-
CMOS wafer fabrication process.
Pin and function equivalent to the AD7520 industry standard,
the AD7533 is recommended as a lower cost alternative for old
AD7520 sockets or new 10-bit DAC designs.
AD7533 application flexibility is demonstrated by its ability to
interface to TTL or CMOS, operate on 5 V to 15 V power, and
provide proper binary scaling for reference inputs of either
positive or negative polarity.
APPLICATIONS
Digitally controlled attenuators
Programmable gain amplifiers
Function generation
Linear automatic gain controls
FUNCTIONAL BLOCK DIAGRAM
V
REF
20kΩ
S1
10kΩ
20kΩ
S2
10kΩ
20kΩ
S3
10kΩ
20kΩ
SN
I
OUT
2
I
OUT
1
10kΩ
R
FB
01134-001
20kΩ
BIT 1 (MSB)
BIT 2
BIT 3
BIT 10 (LSB)
DIGITAL INPUTS (DTL/TTL/CMOS COMPATIBLE)
Figure 1.
Rev. C
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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