Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear-IC

FEATURES

● 4mA TO 20mA TRANSMITTER

● SELECTABLE INPUT/OUTPUT RANGES:

0V to +5V, 0V to +10V Inputs

0mA to 20mA, 5mA to 25mA Outputs

Other Ranges

● 0.005% MAX NONLINEARITY, 14 BIT

● PRECISION +10V REFERENCE OUTPUT

● SINGLE-SUPPLY OPERATION

● WIDE SUPPLY RANGE: 13.5V to 40V

APPLICATIONS

● INDUSTRIAL PROCESS CONTROL

● PRESSURE/TEMPERATURE TRANSMITTERS

● CURRENT-MODE BRIDGE EXCITATION

● GROUNDED TRANSDUCER CIRCUITS

● CURRENT SOURCE REFERENCE FOR DATA

ACQUISITION

● PROGRAMMABLE CURRENT SOURCE FOR

TEST EQUIPMENT

● POWER PLANT/ENERGY SYSTEM

MONITORING

DESCRIPTION

The XTR110 is a precision voltage-to-current converter

designed for analog signal transmission. It accepts inputs

of 0 to 5V or 0 to 10V and can be connected for outputs of

4mA to 20mA, 0mA to 20mA, 5mA to 25mA, and many other

commonly used ranges.

A precision on-chip metal film resistor network provides input

scaling and current offsetting. An internal 10V voltage refer-

ence can be used to drive external circuitry.

The XTR110 is available in 16-pin plastic DIP, ceramic DIP

and SOL-16 surface-mount packages. Commercial and in-

dustrial temperature range models are available.

+10V

Reference

REF

Force

REF

Sense

REF

Adjust

IN1

(10V)

REF

IN2

(5V)

Common

Offset

(zero)

Adjust

16mA

Span

4mA

Span

Adjust

Source

Sense

Source

Resistor

Gate

Drive

PRECISION VOLTAGE-TO-CURRENT

CONVERTER/TRANSMITTER

XTR110

SBOS141C – JANUARY 1984 – REVISED SEPTEMBER 2009

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.

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.

www.ti.com

Summary of content (19 pages)

PAGE 1
XTR110 SBOS141C – JANUARY 1984 – REVISED SEPTEMBER 2009 PRECISION VOLTAGE-TO-CURRENT CONVERTER/TRANSMITTER FEATURES APPLICATIONS ● 4mA TO 20mA TRANSMITTER ● SELECTABLE INPUT/OUTPUT RANGES: 0V to +5V, 0V to +10V Inputs 0mA to 20mA, 5mA to 25mA Outputs Other Ranges ● 0.005% MAX NONLINEARITY, 14 BIT ● PRECISION +10V REFERENCE OUTPUT ● SINGLE-SUPPLY OPERATION ● WIDE SUPPLY RANGE: 13.
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ABSOLUTE MAXIMUM RATINGS(1) Power Supply, +VCC ............................................................................ 40V Input Voltage, VIN1, VIN2, VREF IN ....................................................... +VCC See text regarding safe negative input voltage range. Storage Temperature Range: A, B ................................ –55°C to +125°C K, U .................................. –40°C to +85°C Output Short-Circuit Duration, Gate Drive and VREF Force ................................
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ELECTRICAL CHARACTERISTICS At TA = +25°C and VCC = +24V and RL = 250Ω**, unless otherwise specified.
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TYPICAL PERFORMANCE CURVES TA = +25°C, VCC = 24VDC, RL = 250Ω, unless otherwise noted. VREF LINE REGULATION vs FREQUENCY IO POWER SUPPLY REGULATION vs FREQUENCY 10 ∆ IO /∆ VCC (% of span/V) 10 ∆ VREF/∆ VCC (%/V) 1 0.1 0.01 0.001 1 0.1 0.01 0.001 1 10 100 1k 10k 100k 1 10 Ripple Frequency (Hz) JUNCTION TEMPERATURE RISE vs VREF OUTPUT CURRENT 10k 100k TOTAL OUTPUT ERROR vs TEMPERATURE Max. Temp. Rise for +85°C Ambient 80 Max.
PAGE 5
TYPICAL PERFORMANCE CURVES (Continued) At TA = +25°C, VCC = 24VDC, RL = 250Ω, unless otherwise noted. PULSE RESPONSE SETTLING TIME WITH NEG VIN STEP VIN VIN 0V 0V 0V IO Error (0.01% of Span/Box) IO into 500Ω 0V SETTLING TIME WITH POS VIN STEP VIN 0V 0V IO Error (0.01% of Span/Box) XTR110 SBOS141C www.ti.
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APPLICATIONS INFORMATION Figure 1 shows the basic connections required for 0V to 10V input and 4ma to 20mA output. Other input voltage and output current ranges require changes in connections of pins 3, 4, 5, 9 and 10 as shown in the table of Figure 1. have a voltage rating equal or greater than the maximum power supply voltage. Various recommended types are shown in Table I. MANUFACTURER PART NO.
PAGE 7
If the supply voltage, +VCC, exceeds the gate-to-source breakdown voltage of QEXT, and the output connection (drain of QEXT) is broken, QEXT could fail. If the gate-tosource breakdown voltage is lower than +VCC, QEXT can be protected with a 12V zener diode connected from gate to source. +VCC 16 PMAX = (+VCC) IFS 13 XTR110 TIP30B etc. 14 Two PNP discrete transistors (Darlington-connected) can be used for QEXT—see Figure 2. Note that an additional capacitor is required for stability.
PAGE 8
+ 1 12 Output Current, IO (mA) Third Wire 16 24V – XTR110 4 0V to +10V S 13 3 14 5 7 6 8 2 9 G 15 R1 10 R3 Zero Adjust ±1.8% of Span 5 RL 250Ω 1V to +5V Out Span Adjust ±0.45% as shown 16mA Span D 4mA to 20mA Out R4 R1 = 100kΩ R2 = 100kΩ R3 = 49.9kΩ R4 = 31.6Ω 20 1µF Tantalum 15 4mA Offset −2.5 0 2 4 6 8 10 Input Voltage, VIN1 (V) R2 Offset Adjust FIGURE 6. Zero and Span of 0V to +10V Input, 4mA to 20mA Output Configuration (see Figure 5). Span Adjust FIGURE 5.
PAGE 9
TYPICAL APPLICATIONS The XTR110 is ideal for a variety of applications requiring high noise immunity current-mode signal transmission. The precision +10V reference can be used to excite bridges and transducers. Selectable ranges make it very useful as a precision programmable current source. The compact design and low price of the XTR110 allow versatility with a minimum of external components and design engineering expense. Figures 8 through 10 show typical applications of the XTR110.
PAGE 10
Isolation Barrier +15V Isolated Power Supply (722) 1µF –15V +15V –15V +15V 15 16 12 1 3 15 0 to –10V 7 ISO122 13 XTR110 S 4 8 14 5 16 9 G 4mA to 20mA Out D 2 RL VL FIGURE 9. Isolated 4mA to 20mA Channel. +24V 15 REXT 0.1Ω 16 12 4 0V to +10V 13 XTR110 S 3 5 14 9 2 G 0A to 10A Out D See extended span section. FIGURE 10. 0A to 10A Output Voltage-to-Current Converter. 10 XTR110 www.ti.
PAGE 11
Revision History DATE REVISION PAGE 9/09 C 6 SECTION Front Page Applications Information DESCRIPTION Changed front page to standard format. Changed text in third paragraph. NOTE: Page numbers for previous revisions may differ from page numbers in the current version. XTR110 SBOS141C www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device XTR110KU/1K Package Package Pins Type Drawing SOIC DW 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.7 2.7 12.0 16.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) XTR110KU/1K SOIC DW 16 1000 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.