Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - current control/management Current monitoring TSSOP 8

OUT

IN–

IN+

GND

INA139-Q1

INA169-Q1

www.ti.com

SGLS185E –SEPTEMBER 2003–REVISED MAY 2011

HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR

Check for Samples: INA139-Q1, INA169-Q1

FEATURES

• Qualified for Automotive Applications

• ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model

(C = 200 pF, R = 0)

• Complete Unipolar High-Side Current Measurement Circuit

• Wide Supply and Common-Mode Ranges

– INA139-Q1: 2.7 V to 40 V

– INA169-Q1: 2.7 V to 60 V

• Independent Supply and Input Common-Mode Voltages

• Single Resistor Gain Set

• Low Quiescent Current (60 μA Typ)

• Wide Temperature Range: –40°C to +125°C

• TSSOP-8 Package

APPLICATIONS

• Current Shunt Measurement:

– Automotive, Telephone, Computers

• Portable And Battery-Backup Systems

• Battery Chargers

• Power Management

• Cell Phones

• Precision Current Source

DESCRIPTION

The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage

range, high-speed, low quiescent current, and tiny TSSOP-8 packaging enable use in a variety of applications.

The device converts a differential input voltage to a current output. This current is converted back to a voltage

with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt

measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA139 and INA169 are available in TSSOP-8 and are specified for the –40°C to 125°C temperature

range.

PW PACKAGE

(TOP VIEW)

NC − No internal connection

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.

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.

Summary of content (14 pages)

PAGE 1
INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR Check for Samples: INA139-Q1, INA169-Q1 FEATURES 1 • • • • • • • • • Qualified for Automotive Applications ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Complete Unipolar High-Side Current Measurement Circuit Wide Supply and Common-Mode Ranges – INA139-Q1: 2.7 V to 40 V – INA169-Q1: 2.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com ELECTRICAL CHARACTERISTICS TA = −40°C to 125°C, VS = 5 V, VIN+ = 12 V, and ROUT = 25 kΩ unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 100 INPUT Full-scale sense voltage VSENSE = VIN+ − VIN− 500 mV INA139 2.7 40 V INA169 2.7 60 VIN+ = 2.7 V to 40 V, VSENSE = 50 mV INA139 100 115 VIN+ = 2.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com TYPICAL CHARACTERISTICS Typical characteristics are at TA = 25°C, V+ = 5 V, VIN+ = 12 V, and RL = 125 kΩ, unless otherwise noted. Common-Mode Rejection (dB) = 100 kW Gain (dB) = 10 kW = 1 kW Figure 1. Figure 2. PSR (dB) Figure 4. Total Output Error (%) Quiescent Current (mA) Figure 3. Figure 5. 4 – Total Output Error (%) – Figure 6.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Typical characteristics are at TA = 25°C, V+ = 5 V, VIN+ = 12 V, and RL = 125 kΩ, unless otherwise noted. 20ms/div Figure 7. Copyright © 2003–2011, Texas Instruments Incorporated 10ms/div Figure 8.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com APPLICATION INFORMATION Figure 9 illustrates the basic circuit diagram for both the INA139 and INA169. Load current IS is drawn from supply VS through shunt resistor RS. The voltage drop in shunt resistor VS is forced across RG1 by the internal operational amplifier, causing current to flow into the collector of Q1. External resistor RL converts the output current to a voltage, VOUT, at the OUT pin.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com POWER SUPPLIES The input circuitry of the INA139 can accurately measure beyond its power-supply voltage, V+. For example, the V+ power supply can be 5 V, whereas the load power supply voltage is up to 36 V (or 60 V with the INA169). However, the output voltage range of the OUT terminal is limited by the lesser of the two voltages (see the Output Voltage Range section).
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com APPLICATIONS The INA139 is designed for current shunt measurement circuits, as shown in Figure 9, but its basic function is useful in a wide range of circuitry. A few ideas are illustrated in Figure 12 through Figure 15. 2 1 2 1 m || m Figure 12. Offsetting the Output Voltage W 2 1kW 1 2 1 1kW 1kW 1kW 8 8 6 4 10kW 4 6 10kW 100kW Figure 13.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com 8 8 6 4 4 6 25kW 25kW Figure 14.
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INA139-Q1 INA169-Q1 SGLS185E – SEPTEMBER 2003 – REVISED MAY 2011 www.ti.com Figure 15.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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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 JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.