XTR111 Datasheet, PDF (1/22 Pages) Burr-Brown (TI) – Precision Voltage-to-Current Converter/Transmitter

XTR111
XRT1 ₁₁
Precision Voltage-to-Current
Converter/Transmitter
SBOS375 − NOVEMBER 2006
FEATURES
D EASY-TO-DESIGN INPUT/OUTPUT RANGES:
0mA−20mA, 4mA−20mA, 5mA−25mA
AND VOLTAGE OUTPUTS
D NONLINEARITY: 0.002%
D LOW OFFSET DRIFT: 1µV/5C
D ACCURACY: 0.015%
D SINGLE-SUPPLY OPERATION
D WIDE SUPPLY RANGE: 7V TO 44V
D OUTPUT ERROR FLAG (EF)
D OUTPUT DISABLE (OD)
D ADJUSTABLE VOLTAGE REGULATOR:
3V TO 15V
APPLICATIONS
D UNIVERSAL VOLTAGE-CONTROLLED
CURRENT SOURCE
D CURRENT OR VOLTAGE OUTPUT FOR
3-WIRE SENSOR SYSTEMS
D PLC OUTPUT PROGRAMMABLE DRIVER
D CURRENT-MODE SENSOR EXCITATION
DESCRIPTION
The XTR111 is a precision voltage-to-current converter
designed for the standard 0mA−20mA or 4mA−20mA
analog signals, and can source up to 36mA. The ratio
between input voltage and output current is set by the
single resistor R_SET. The circuit can also be modified for
voltage output.
An external P-MOSFET transistor ensures high output
resistance and a broad compliance voltage range
extending from 2V below the supply voltage, V_VSP, to
voltages well below GND.
The adjustable 3V to 15V sub-regulator output provides
the supply voltage for additional circuitry.
The XTR111 is available in a DFN surface-mount package.
REGF
5
Regulator
Out
REGS
4
3V
Signal
Input ₆
VIN
24V
1
XTR111
VSP
I−Mirror
9
OD
EF ⁸
IS 2
Output Disable
Output Failure
VG 3 S
G
I_SET
D
I_OUT
Load _{0mA to 20mA}
4mA to 20mA
(± Load Ground)
GND
10
SET
7
R_SET
( ) ^IOUT ^{= 10}
V_VIN
R_SET
I_OUT = 10 • I_SET
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PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2006, Texas Instruments Incorporated
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