AD5545(Rev0) Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD5545 Datasheet PDF : 16 Pages
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FEATURES
16-bit resolution AD5545
14-bit resolution AD5555
±1 LSB DNL monotonic
±2 LSB INL AD5545
2 mA full-scale current ±20%, with VREF = 10 V
0.5 µs settling time
2Q multiplying reference-input 4 MHz BW
Zero or midscale power-up preset
Zero or midscale dynamic reset
3-wire interface
Compact TSSOP-16 package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Industrial control PLCs
Programmable attentuator
PRODUCT OVERVIEW
The AD5545/AD5555 are 16-bit/14-bit, current-output, digital-
to-analog converters designed to operate from a single 5 V
supply with bipolar output up to ±15 V capability.
An external reference is needed to establish the full-scale out-
put-current. An internal feedback resistor (RFB) enhances the
resistance and temperature tracking when combined with an
external op amp to complete the I-to-V conversion.
A serial data interface offers high speed, 3-wire microcontroller
compatible inputs using serial data in (SDI), clock (CLK), and
chip select (CS). Additional LDAC function allows simultane-
ous update operation. The internal reset logic allows power-on
preset and dynamic reset at either zero or midscale, depending
on the state of the MSB pin.
The AD5545/AD5555 are packaged in the compact TSSOP-16
package and can be operated from –40°C to +85°C.
Dual, Current-Output,
Serial-Input, 16-/14-Bit DAC
AD5545/AD5555
FUNCTIONAL BLOCK DIAGRAM
VREFA VREFB
16 OR 14
VDD
D0..DX
SDI
INPUT
REGISTER R
DAC A
REGISTER R
CS
CLK
EN
DAC A
B
ADDR
DECODE
DGND
INPUT
REGISTER R
DAC B
REGISTER R
POWER-
ON
RESET
RS MSB
LDAC
Figure 1.
DAC A
DAC B
RFBA
IOUTA
AGNDA
RFBB
IOUTB
AGNDB
AD5545/
AD5555
02918-0-001
Rev. 0
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