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AD7564 Datasheet(PDF) 1 Page - Analog Devices

Part # AD7564
Description  LC2MOS 3.3 V/5 V, Low Power, Quad 12-Bit DAC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7564 Datasheet(HTML) 1 Page - Analog Devices

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AD7564
a
FEATURES
Four 12-Bit DACs in One Package
4-Quadrant Multiplication
Separate References
Single Supply Operation
Guaranteed Specifications with +3.3 V/+5 V Supply
Low Power
Versatile Serial Interface
Simultaneous Update Capability
Reset Function
28-Pin SOIC, SSOP and DIP Packages
APPLICATIONS
Process Control
Portable Instrumentation
General Purpose Test Equipment
FUNCTIONAL BLOCK DIAGRAM
V
A
R
B
DAC A
DAC A
LATCH
INPUT
LATCH A
INPUT
LATCH B
INPUT
LATCH C
INPUT
LATCH D
DAC B
LATCH
DAC C
LATCH
DAC D
LATCH
DAC B
DAC C
DAC D
V
B
REF
V
D
REF
R
D
R
C
FB
FB
R
A
FB
REF
V
C
REF
VDD
DGND
LDAC
CLR
AD7564
12
12
12
12
12
12
12
CONTROL LOGIC
+
INPUT SHIFT
REGISTER
CLKIN
SDIN
SDOUT
12
FSIN
I
A
I
A
I
B
I
B
I
C
I
D
OUT1
OUT2
OUT1
OUT2
OUT1
FB
OUT1
A0 A1
12
NC
AGND
I
C
OUT2
I
D
OUT2
PRODUCT HIGHLIGHTS
1. The AD7564 contains four 12-bit current output DACs with
separate VREF inputs.
2. The AD7564 can be operated from a single +3.3 V to +5 V
supply.
3. Simultaneous update capability and reset function are
available.
4. The AD7564 features a fast, versatile serial interface com-
patible with modern 3 V and 5 V microprocessors and
microcomputers.
5. Low power, 50
µW at 5 V and 33 µW at 3.3 V.
LC2MOS
+3.3 V/+5 V, Low Power, Quad 12-Bit DAC
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The AD7564 contains four 12-bit DACs in one monolithic
device. The DACs are standard current output with separate
VREF, IOUT1, IOUT2 and RFB terminals. These DACs operate from
a single +3.3 V to +5 V supply.
The AD7564 is a serial input device. Data is loaded using
FSIN
, CLKIN and SDIN. Two address pins A0 and A1 set up
a device address, and this feature may be used to simplify device
loading in a multi-DAC environment. Alternatively, A0 and A1
can be ignored and the serial out capability used to configure a
daisy-chained system.
All DACs can be simultaneously updated using the asynchro-
nous LDAC input, and they can be cleared by asserting the
asynchronous CLR input.
The device is packaged in 28-pin SOIC, SSOP and DIP
packages.


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