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Analog Devices Semiconductor Electronic Components Datasheet

AD5327 Datasheet

8-/10-/12-Bit DACs

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AD5327 pdf
2.5 V to 5.5 V, 400 μA, Quad Voltage Output,
8-/10-/12-Bit DACs in 16-Lead TSSOP
AD5307/AD5317/AD5327
FEATURES
GENERAL DESCRIPTION
AD5307: 4 buffered 8-bit DACs in 16-lead TSSOP
A version: ±1 LSB INL; B version: ±0.625 LSB INL
AD5317: 4 buffered 10-bit DACs in 16-lead TSSOP
A version: ±4 LSB INL; B version: ±2.5 LSB INL
AD5327: 4 buffered 12-bit DACs in 16-lead TSSOP
A version: ±16 LSB INL; B version: ±10 LSB INL
The AD5307/AD5317/AD53271 are quad 8-,10-,12-bit buffered
voltage-output DACs in 16-lead TSSOP that operate from single
2.5 V to 5.5 V supplies and consume 400 μA at 3 V. Their on-
chip output amplifiers allow the outputs to swing rail-to-rail with
a slew rate of 0.7 V/μs. The AD5307/AD5317/AD5327 utilize
Low power operation: 400 μA @ 3 V, 500 μA @ 5 V
versatile 3-wire serial interfaces that operate at clock rates up to
2.5 V to 5.5 V power supply
30 MHz; these parts are compatible with standard SPI, QSPI,
Guaranteed monotonic by design over all codes
Power down to 90 nA @ 3 V, 300 nA @ 5 V (LDAC pin)
Double-buffered input logic
Buffered/unbuffered reference input options
MICROWIRE, and DSP interface standards.
The references for the four DACs are derived from two reference
pins (one per DAC pair). These reference inputs can be configured
Output range: 0 V to VREF or 0 V to 2 VREF
Power-on reset to 0 V
as buffered or unbuffered inputs. Each part incorporates a power-
on reset circuit, ensuring that the DAC outputs power up to 0 V
Simultaneous update of outputs (LDAC pin)
and remain there until a valid write to the device takes place.
Asynchronous clear facility (CLR pin)
There is also an asynchronous active low CLR pin that clears all
Low power, SPI®-, QSPI™-, MICROWIRE™-, and DSP-
compatible 3-wire serial interface
SDO daisy-chaining option
On-chip rail-to-rail output buffer amplifiers
Temperature range of −40°C to +105°C
APPLICATIONS
Portable battery-powered instruments
DACs to 0 V. The outputs of all DACs can be updated simul-
taneously using the asynchronous LDAC input. Each part
contains a power-down feature that reduces the current
consumption of the device to 300 nA @ 5 V (90 nA @ 3 V). The
parts can also be used in daisy-chaining applications using the
SDO pin.
Digital gain and offset adjustment
All three parts are offered in the same pinout, allowing users to
Programmable voltage and current sources
select the amount of resolution appropriate for their application
Programmable attenuators
Industrial process control
without redesigning their circuit board.
FUNCTIONAL BLOCK DIAGRAM
VDD
VREFAB
AD5307/AD5317/AD5327
LDAC
GAIN-SELECT
LOGIC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
VOUTA
SCLK
SYNC
DIN
SDO
INTERFACE
LOGIC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
VOUTB
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
BUFFER
VOUTC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC D
POWER-ON
RESET
BUFFER
VOUTD
POWER-DOWN
LOGIC
DCEN
LDAC CLR
Figure 1.
VREFCD
PD GND
1 Protected by U.S. Patent No. 5,969,657; other patents pending.
Rev. C
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 that may result from its use. Specifications subject to change without notice. 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
©2006 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD5327 Datasheet

8-/10-/12-Bit DACs

No Preview Available !

AD5327 pdf
AD5307/AD5317/AD5327
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AC Characteristics........................................................................ 5
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 13
Transfer Function ........................................................................... 14
Functional Description .................................................................. 15
Digital-to-Analog Section ......................................................... 15
Resistor String ............................................................................. 15
DAC Reference Inputs ............................................................... 15
Output Amplifier........................................................................ 16
Power-On Reset .......................................................................... 16
Serial Interface ................................................................................ 17
REVISION HISTORY
3/06—Rev. B to Rev. C
Changes to Table 3............................................................................ 5
Changes to Ordering Guide .......................................................... 25
10/05—Rev. A to Rev. B
Updated Format..................................................................Universal
Changes to Bipolar Operation Section ........................................ 21
Changes to Ordering Guide .......................................................... 25
Input Shift Register .................................................................... 17
Control Bits ................................................................................. 17
Low Power Serial Interface ....................................................... 18
Daisy Chaining ........................................................................... 18
Double-Buffered Interface ........................................................ 18
Load DAC Input (LDAC).......................................................... 18
Power-Down Mode .................................................................... 18
Microprocessor Interfacing....................................................... 19
Applications..................................................................................... 20
Typical Application Circuit....................................................... 20
Driving VDD from the Reference Voltage ................................ 20
Bipolar Operation....................................................................... 20
Opto-Isolated Interface for Process-Control Applications... 21
Decoding Multiple AD5307/AD5317/AD5327 Devices....... 21
AD5307/AD5317/AD5327 as Digitally Programmable
Window Detectors ..................................................................... 21
Daisy Chaining ........................................................................... 22
Power Supply Bypassing and Grounding................................ 22
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 25
8/03—Rev. 0 to Rev. A
Added A Version ................................................................Universal
Changes to Features ..........................................................................1
Changes to Specifications.................................................................2
Changes to Absolute Maximum Ratings........................................6
Changes to Ordering Guide .............................................................6
Changes to TPC 21......................................................................... 12
Added Octals section to Table II .................................................. 20
Updated Outline Dimensions....................................................... 21
Rev. C | Page 2 of 28


Part Number AD5327
Description 8-/10-/12-Bit DACs
Maker Analog Devices
Total Page 28 Pages
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