XTR111AIDGQR Datasheet, PDF (1/32 Pages) Texas Instruments – Precision Voltage-to-Current Converter/Transmitter

XRT111
XTR111
www.ti.com
SBOS375C – NOVEMBER 2006 – REVISED JUNE 2011
Precision Voltage-to-Current
Converter/Transmitter
Check for Samples: XTR111
FEATURES
1
•2 EASY-TO-DESIGN INPUT/OUTPUT RANGES:
0mA–20mA, 4mA–20mA, 5mA–25mA AND
VOLTAGE OUTPUTS
• NONLINEARITY: 0.002%
• LOW OFFSET DRIFT: 1μV/°C
• ACCURACY: 0.015%
• SINGLE-SUPPLY OPERATION
• WIDE SUPPLY RANGE: 7V to 44V
• OUTPUT ERROR FLAG (EF)
• OUTPUT DISABLE (OD)
• ADJUSTABLE VOLTAGE REGULATOR:
3V to 15V
APPLICATIONS
• UNIVERSAL VOLTAGE-CONTROLLED
CURRENT SOURCE
• CURRENT OR VOLTAGE OUTPUT FOR 3-WIRE
SENSOR SYSTEMS
• PLC OUTPUT PROGRAMMABLE DRIVER
• 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 that extends 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 MSOP and DFN
surface-mount packages.
REGF
5
Regulator
Out
REGS
4
3V
Signal
Input
6
V_IN
24V
1
XTR111
VSP
I- Mirror
9
OD
EF ⁸
IS 2
VG 3
I_SET
Output Disable
Output Failure
(1)
Q₂
G
15W
S
Q₁
D
15W
10nF
Load
0mA to 20mA
4mA to 20mA
GND
10
SET
7
R_SET
( ) ^IOUT ^{= 10}
V_VIN
R_SET
I_OUT = 10 · I_SET
(± Load Ground)
NOTE: (1) See Application Information,
External Current Limit Circuits for other
options.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2011, Texas Instruments Incorporated