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AD5331BRUZ1 Folha de dados(PDF) 1 Page - Analog Devices

Nome de Peças AD5331BRUZ1
Descrição Electrónicos  2.5 V to 5.5 V, 115 關A, Parallel Interface Single Voltage-Output 8-/10-/12-Bit DACs
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2.5 V to 5.5 V, 115 μA, Parallel Interface
Single Voltage-Output 8-/10-/12-Bit DACs
AD5330/AD5331/AD5340/AD5341
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2000–2008 Analog Devices, Inc. All rights reserved.
FEATURES
AD5330: single 8-bit DAC in 20-lead TSSOP
AD5331: single 10-bit DAC in 20-lead TSSOP
AD5340: single 12-bit DAC in 24-lead TSSOP
AD5341: single 12-bit DAC in 20-lead TSSOP
Low power operation: 115 μA @ 3 V, 140 μA @ 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
Buffered/unbuffered reference input options
Output range: 0 V to VREF or 0 V to 2 × VREF
Power-on reset to 0 V
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 AD5330/AD5331/AD5340/AD53411 are single 8-/10-/12-
bit DACs. They operate from a 2.5 V to 5.5 V supply consuming
just 115 μA at 3 V and feature a power-down mode that further
reduces the current to 80 nA. The devices incorporate an on-chip
output buffer that can drive the output to both supply rails, but
the AD5330, AD5340, and AD5341 allow a choice of buffered
or unbuffered reference input.
The AD5330/AD5331/AD5340/AD5341 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 allows the output range to be set at 0 V to VREF or
0 V to 2 × VREF.
Input data to the DACs is double-buffered, allowing simultane-
ous update of multiple DACs in a system using the LDAC pin.
An asynchronous CLR input is also provided, which 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 AD5330/AD5331/AD5340/AD5341 are available in thin
shrink small outline packages (TSSOP).
1 Protected by U.S. Patent Number 5,969,657.
FUNCTIONAL BLOCK DIAGRAM
BUFFER
8-BIT
DAC
DAC
REGISTER
INPUT
REGISTER
POWER-DOWN
LOGIC
BUF
GAIN
DB7
DB0
..
CS
WR
CLR
LDAC
VREF
VDD
VOUT
PD
GND
AD5330
POWER-ON
RESET
RESET
10
9
7
6
13
20
8
1
3
12
4
11
5
Figure 1. AD5330


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