|
Part Number
|
AD421 |
|
Manufacturer
|
Analog Devices |
|
Description
|
Loop-Powered 4 mA to 20 mA DAC |
|
Published
|
Mar 23, 2005 |
|
Detailed Description
|
a
FEATURES 4 mA to 20 mA Current Output HART® Compatible 16-Bit Resolution and Monotonicity ؎0.01% Integral Nonlinearity...
|
|
Datasheet
|
AD421
|
Overview
a
FEATURES 4 mA to 20 mA Current Output HART® Compatible 16-Bit Resolution and Monotonicity ؎0.
01% Integral Nonlinearity 5 V or 3 V Regulator Output 2.
5 V and 1.
25 V Precision Reference 750 A Quiescent Current max Programmable Alarm Current Capability Flexible High Speed Serial Interface 16-Lead SOIC and PDIP Packages
DATA CLOCK LATCH REF IN (+2.
5V)
Loop-Powered 4 mA to 20 mA DAC AD421
FUNCTIONAL BLOCK DIAGRAM
REF OUT1 REF OUT2 (+2.
5V) (+1.
25V) LV VCC 75k⍀
112.
5k⍀
AD421
BANDGAP REFERENCE
134k⍀ DRIVE 121k⍀ COMP BOOST
LOCAL OSCILLATOR INPUT SHIFT REGISTER DAC LATCH 16-BIT SIGMADELTA DAC SWITCHED CURRENT SOURCES AND FILTERING
GENERAL DESCRIPTION
40⍀ 80k⍀ LOOP RTN
The AD421 is a complet...
Similar Datasheet