Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOT 23 8

A379

OPA2379

OPA4379

FEATURES

DESCRIPTION

APPLICATIONS

REF

1/2

OPA2379

OUT

1/2

OPA2379

OPA379

OPA2379

OPA4379

www.ti.com

................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008

1.8V, 2.9 µ A, 90kHz, Rail-to-Rail I/O

OPERATIONAL AMPLIFIERS

• LOW NOISE: 2.8 µ V

(0.1Hz - 10Hz)

The OPA379 family of micropower, low-voltage

• microPower: 5.5 µ A (max)

operational amplifiers is designed for battery-powered

• LOW OFFSET VOLTAGE: 1.5mV (max)

applications. These amplifiers operate on a supply

• DC PRECISION:

voltage as low as 1.8V ( ± 0.9V). High-performance,

single-supply operation with rail-to-rail capability

– CMRR: 100dB

(10 µ V max) makes the OPA379 family useful for a

– PSRR: 2 µ V/V

wide range of applications.

– A

: 120dB

In addition to microSize packages, the OPA379 family

• WIDE SUPPLY VOLTAGE RANGE: 1.8V to 5.5V

of op amps features impressive bandwidth (90kHz),

• microSize PACKAGES:

low bias current (5pA), and low noise (80nV/ √ Hz)

relative to the very low quiescent current (5.5 µ A

– SC70-5, SOT23-5, SOT23-8, SO-8, TSSOP-14

max).

The OPA379 (single) is available in SC70-5,

SOT23-5, and SO-8 packages. The OPA2379 (dual)

• BATTERY-POWERED INSTRUMENTS

comes in SOT23-8 and SO-8 packages. The

• PORTABLE DEVICES

OPA4379 (quad) is offered in a TSSOP-14 package.

• MEDICAL INSTRUMENTS

All versions are specified from – 40 ° C to +125 ° C.

• HANDHELD TEST EQUIPMENT

xxx

Table 1. OPAx379 RELATED PRODUCTS

FEATURES PRODUCT

1 µ A, 70kHz, 2mV V

, 1.8V to 5.5V Supply OPAx349

1 µ A, 5.5kHz, 390 µ V V

, 2.5V to 16V Supply TLV240x

1 µ A, 5.5kHz, 0.6mV V

, 2.5V to 12V Supply TLV224x

7 µ A, 160kHz, 0.5mV V

, 2.7V to 16V Supply TLV27Lx

7 µ A, 160kHz, 0.5mV V

, 2.7V to 16V Supply TLV238x

20 µ A, 350kHz, 2mV V

, 2.3V to 5.5V Supply OPAx347

20 µ A, 500kHz, 550 µ V V

, 1.8V to 3.6V Supply TLV276x

45 µ A, 1MHz, 1mV V

, 2.1V to 5.5V Supply OPAx348

Figure 1. OPA2379 in Portable Gas Meter

Application

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.

2 All trademarks are the property of their respective owners.

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 (29 pages)

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OP A3 OPA 79 OPA379 OPA2379 OPA4379 OPA 4379 2379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 1.8V, 2.9µA, 90kHz, Rail-to-Rail I/O OPERATIONAL AMPLIFIERS FEATURES 1 • • • • 2 • • LOW NOISE: 2.8µVPP (0.1Hz - 10Hz) microPower: 5.5µA (max) LOW OFFSET VOLTAGE: 1.
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
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OPA379 OPA2379 OPA4379 www.ti.com ...................................................................................................................................................
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V Boldface limits apply over the specified temperature range indicated. At TA = +25°C, RL = 25kΩ connected to VS/2, and VCM < (V+) – 1V, unless otherwise noted. OPA379, OPA2379, OPA4379 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0.
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OPA379 OPA2379 OPA4379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V (continued) Boldface limits apply over the specified temperature range indicated. At TA = +25°C, RL = 25kΩ connected to VS/2, and VCM < (V+) – 1V, unless otherwise noted.
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS At TA = +25°C, VS = 5V, and RL = 25kΩ connected to VS/2, unless otherwise noted. COMMON-MODE AND POWER-SUPPLY REJECTION RATIO vs FREQUENCY 0 120 100 -30 100 80 -60 60 -90 40 -120 20 -150 20 -180 100k 0 0 0.
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OPA379 OPA2379 OPA4379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = 5V, and RL = 25kΩ connected to VS/2, unless otherwise noted. OFFSET VOLTAGE vs COMMON-MODE VOLTAGE vs TEMPERATURE 15.0 12.5 Unit 1 Common-Mode Input Range 10.0 7.5 CMRR Specified Range 5.0 Population 2.5 0 -2.5 -5.0 -7.
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = 5V, and RL = 25kΩ connected to VS/2, unless otherwise noted. INPUT BIAS CURRENT vs TEMPERATURE 0.1Hz TO 10Hz NOISE 10000 100 1mV/div Input Bias Current (pA) 1000 10 1 0.1 0.
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OPA379 OPA2379 OPA4379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 APPLICATION INFORMATION The OPA379 family of operational amplifiers minimizes power consumption without compromising bandwidth or noise. Power-supply rejection ratio (PSRR), common-mode rejection ratio (CMRR), and open-loop gain (AOL) typical values are 100dB or better.
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com In unity-gain inverter configuration, phase margin can be reduced by the reaction between the capacitance at the op amp input and the gain setting resistors. Best performance is achieved by using smaller valued resistors.
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OPA379 OPA2379 OPA4379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 WINDOW COMPARATOR The window comparator threshold voltages are set as follows: R2 ´ VS VH = R 1 + R2 (5) R4 ´ VS VL = R 3 + R4 (6) Figure 24 shows the OPA2379 used as a window comparator. The threshold limits are set by VH and VL, with VH > VL.
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OPA379 OPA2379 OPA4379 SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com ADDITIONAL APPLICATION EXAMPLES Figure 25 through Figure 29 illustrate additional application examples. +2.7V R3 R2 VCC +2.7V MSP430x20x3PW R1 66.5W A0+ 16-Bit ADC OPA379 C1 1.5nF VIN VREF REF3312 VSS C2 1m F Figure 25.
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OPA379 OPA2379 OPA4379 www.ti.com ................................................................................................................................................... SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 RG zener RSHUNT (1) V+ (2) R1 10kW MOSFET rated to stand-off supply voltage such as BSS84 for up to 50V. OPA379 V+5V Two zener biasing methods (3) are shown. Output Load RBIAS RL (1) Zener rated for op amp supply capability (that is, 5.1V for OPA379).
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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PACKAGE MATERIALS INFORMATION www.ti.com 21-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) OPA2379AIDCNR SOT-23 DCN 8 3000 180.0 8.4 OPA2379AIDCNR SOT-23 DCN 8 3000 179.0 OPA2379AIDCNT SOT-23 DCN 8 250 179.
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PACKAGE MATERIALS INFORMATION www.ti.com 21-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2379AIDCNR SOT-23 DCN 8 3000 210.0 185.0 35.0 OPA2379AIDCNR SOT-23 DCN 8 3000 195.0 200.0 45.0 OPA2379AIDCNT SOT-23 DCN 8 250 195.0 200.0 45.0 OPA2379AIDCNT SOT-23 DCN 8 250 210.0 185.0 35.0 OPA2379AIDR SOIC D 8 2500 367.0 367.0 35.0 OPA379AIDBVR SOT-23 DBV 5 3000 180.0 180.0 18.
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