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AD5334 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD5334
Description  2.5 V to 5.5 V, 500 uA, Parallel Interface Quad Voltage-Output 8-/10-/12-Bit DACs
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5334 Datasheet(HTML) 1 Page - Analog Devices

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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.
a
AD5334/AD5335/AD5336/AD5344*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
2.5 V to 5.5 V, 500 A, Parallel Interface
Quad Voltage-Output 8-/10-/12-Bit DACs
AD5334 FUNCTIONAL BLOCK DIAGRAM
(Other Diagrams Inside)
VOUTA
BUFFER
GND
AD5334
VOUTB
BUFFER
VOUTC
BUFFER
VOUTD
BUFFER
POWER-ON
RESET
TO ALL DACS
AND BUFFERS
POWER-DOWN
LOGIC
PD
DAC
REGISTER
8-BIT
DAC
8-BIT
DAC
INPUT
REGISTER
VREFC/D
INTER-
FACE
LOGIC
VDD
VREFA/B
GAIN
DB7
DB0
CS
WR
A0
A1
CLR
LDAC
.
.
.
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
8-BIT
DAC
8-BIT
DAC
8-BIT
DAC
FEATURES
AD5334: Quad 8-Bit DAC in 24-Lead TSSOP
AD5335: Quad 10-Bit DAC in 24-Lead TSSOP
AD5336: Quad 10-Bit DAC in 28-Lead TSSOP
AD5344: Quad 12-Bit DAC in 28-Lead TSSOP
Low Power Operation: 500
A @ 3 V, 600
A @ 5 V
Power-Down to 80 nA @ 3 V, 200 nA @ 5 V via
PD Pin
2.5 V to 5.5 V Power Supply
Double-Buffered Input Logic
Guaranteed Monotonic by Design Over All Codes
Output Range: 0–VREF or 0–2 VREF
Power-On Reset to Zero Volts
Simultaneous Update of DAC Outputs via
LDAC Pin
Asynchronous
CLR Facility
Low Power Parallel Data Interface
On-Chip Rail-to-Rail Output Buffer Amplifiers
Temperature Range: –40 C to +105 C
APPLICATIONS
Portable Battery-Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage and Current Sources
Programmable Attenuators
Industrial Process Control
GENERAL DESCRIPTION
The AD5334/AD5335/AD5336/AD5344 are quad 8-, 10-, and
12-bit DACs. They operate from a 2.5 V to 5.5 V supply con-
suming just 500
µA at 3 V, and feature a power-down mode that
further reduces the current to 80 nA. These devices incorporate
an on-chip output buffer that can drive the output to both sup-
ply rails.
The AD5334/AD5335/AD5336/AD5344 have a parallel interface.
CS selects the device and data is loaded into the input registers
on the rising edge of
WR.
The GAIN pin on the AD5334 and AD5336 allows the output
range to be set at 0 V to VREF or 0 V to 2
× V
REF.
Input data to the DACs is double-buffered, allowing simultaneous
update of multiple DACs in a system using the
LDAC pin.
On the AD5334, AD5335 and AD5336 an asynchronous
CLR
input is also provided. This resets the contents of the Input
Register and the DAC Register to all zeros. These devices also
incorporate a power-on-reset circuit that ensures that the DAC
output powers on to 0 V and remains there until valid data is
written to the device.
The AD5334/AD5335/AD5336/AD5344 are available in Thin
Shrink Small Outline Packages (TSSOP).
*Protected by U.S. Patent Number 5,969,657; other patents pending.


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