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Analog Devices Semiconductor Electronic Components Datasheet

AD5337 Datasheet

8-/10-/12-Bit DAC

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AD5337 pdf
2.5 V to 5.5 V, 250 μA, 2-Wire Interface,
Dual Voltage Output, 8-/10-/12-Bit DACs
AD5337/AD5338/AD5339
FEATURES
AD5337
2 buffered 8-bit DACs in 8-lead MSOP
AD5338, AD5338-1
2 buffered 10-bit DACs in 8-lead MSOP
AD5339
2 buffered 12-bit DACs in 8-lead MSOP
Low power operation: 250 μA @ 3 V, 300 μA @ 5 V
2-wire (I2C-compatible) serial interface
2.5 V to 5.5 V power supply
Guaranteed monotonic by design over all codes
Power-down to 80 nA @ 3 V, 200 nA @ 5 V
3 power-down modes
Double-buffered input logic
Output range: 0 V to VREF
Power-on reset to 0 V
Simultaneous update of outputs (LDAC function)
Software clear facility
Data readback facility
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 AD5337/AD5338/AD5339 are dual 8-, 10-, and 12-bit
buffered voltage output DACs, respectively. Each part is housed
in an 8-lead MSOP package and operates from a single 2.5 V to
5.5 V supply, consuming 250 μA at 3 V. On-chip output amplifiers
allow rail-to-rail output swing with a slew rate of 0.7 V/μs. A 2-
wire serial interface operates at clock rates up to 400 kHz. This
interface is SMBus compatible at VDD < 3.6 V. Multiple devices
can be placed on the same bus.
The references for the two DACs are derived from one reference
pin. The outputs of all DACs can be updated simultaneously
using the software LDAC function. The parts incorporate a
power-on reset circuit to ensure that the DAC outputs power up
to 0 V and remain there until a valid write to the device takes
place. A software clear function resets all input and DAC
registers to 0 V. A power-down feature reduces the current
consumption of the devices to 200 nA @ 5 V (80 nA @ 3 V).
The low power consumption of these parts in normal operation
makes them ideally suited to portable battery-operated equip-
ment. The power consumption is typically 1.5 mW at 5 V and
0.75 mW at 3 V, reducing to 1 μW in power-down mode.
FUNCTIONAL BLOCK DIAGRAM
VDD
REFIN
LDAC
SCL
SDA
A0
INTERFACE
LOGIC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
VOUTA
VOUTB
POWER-ON
RESET
AD5337/AD5338/AD5339
GND
Figure 1.
POWER-DOWN
LOGIC
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 ©2003–2007 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD5337 Datasheet

8-/10-/12-Bit DAC

No Preview Available !

AD5337 pdf
AD5337/AD5338/AD5339
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AC Characteristics........................................................................ 5
Timing Characteristics ................................................................ 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 15
Digital-to-Analog Converter Section ...................................... 15
Resistor String ............................................................................. 15
DAC Reference Inputs ............................................................... 15
REVISION HISTORY
9/07—Rev. B to Rev. C
Changes to Features.......................................................................... 1
Changes to Table 4............................................................................ 7
Changes to Ordering Guide .......................................................... 25
9/06—Rev. A to Rev. B
Updated Format..................................................................Universal
Changes to Figure 31...................................................................... 16
Changes to Table 6.......................................................................... 16
Changes to Table 10........................................................................ 23
Changes to Ordering Guide .......................................................... 25
Output Amplifier........................................................................ 15
Power-on Reset ........................................................................... 15
Serial Interface ............................................................................ 16
Write Operation.......................................................................... 17
Read Operation........................................................................... 18
Double-Buffered Interface ........................................................ 19
Power-Down Modes .................................................................. 19
Applications..................................................................................... 20
Typical Application Circuit....................................................... 20
Bipolar Operation....................................................................... 20
Multiple Devices on One Bus ................................................... 20
Product as a Digitally Programmable Window Detector ..... 21
Coarse and Fine Adjustment Capabilities............................... 21
Power Supply Decoupling ......................................................... 21
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 24
10/04—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Added AD5338-1................................................................Universal
Changes to Specifications.................................................................4
Updated Outline Dimensions....................................................... 24
Changes to Ordering Guide .......................................................... 24
11/03—Rev. 0: Initial Version
Rev. C | Page 2 of 28


Part Number AD5337
Description 8-/10-/12-Bit DAC
Maker Analog Devices
Total Page 28 Pages
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