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OPA349

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Single, 5.5-V, 70-kHz, low quiescent current (1-μA), RRIO operational amplifier

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Data sheet

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TLV9041 ACTIVE Single, 5.5-V, 350-kHz, ultra-low 1.2-V, low-quiescent current (10-μA) op amp Higher GBW (350KHz), lower noise (66nV/√Hz), better accuracy (2.25mV Vos max)

OPA349

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Rail-to-rail In, Out GBW (typ) (MHz) 0.07 Slew rate (typ) (V/µs) 0.02 Vos (offset voltage at 25°C) (max) (mV) 10 Iq per channel (typ) (mA) 0.001 Vn at 1 kHz (typ) (nV√Hz) 300 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 15 Input bias current (max) (pA) 10 CMRR (typ) (dB) 60 Iout (typ) (A) 0.008 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) 0.002 Input common mode headroom (to positive supply) (typ) (V) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.3 Output swing headroom (to positive supply) (typ) (V) -0.3
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Rail-to-rail In, Out GBW (typ) (MHz) 0.07 Slew rate (typ) (V/µs) 0.02 Vos (offset voltage at 25°C) (max) (mV) 10 Iq per channel (typ) (mA) 0.001 Vn at 1 kHz (typ) (nV√Hz) 300 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 15 Input bias current (max) (pA) 10 CMRR (typ) (dB) 60 Iout (typ) (A) 0.008 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) 0.002 Input common mode headroom (to positive supply) (typ) (V) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.3 Output swing headroom (to positive supply) (typ) (V) -0.3
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • LOW SUPPLY CURRENT: 1 µA
  • GAIN-BANDWIDTH: 70kHz
  • UNITY GAIN STABLE
  • LOW INPUT BIAS CURRENT: 10pA (max)
  • WIDE SUPPLY RANGE: 1.8V to 5.5V
  • INPUT RANGE 200mV Beyond Rails
  • OUTPUT SWINGS TO 350mV OF RAILS
  • OUTPUT DRIVE CURRENT: 8mA
  • OPEN-LOOP GAIN: 90dB
  • MicroPACKAGES: SC70, SOT23-5, SOT23-8
  • APPLICATIONS
    • BATTERY PACKS AND POWER SUPPLIES
    • PORTABLE PHONES, PAGERS, AND CAMERAS
    • SOLAR-POWERED SYSTEMS
    • SMOKE, GAS, AND FIRE DETECTION SYSTEMS
    • REMOTE SENSORS
    • PCMCIA CARDS
    • DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS
    • MicroPOWER FILTERS

All trademarks are the property of their respective owners.
  • LOW SUPPLY CURRENT: 1 µA
  • GAIN-BANDWIDTH: 70kHz
  • UNITY GAIN STABLE
  • LOW INPUT BIAS CURRENT: 10pA (max)
  • WIDE SUPPLY RANGE: 1.8V to 5.5V
  • INPUT RANGE 200mV Beyond Rails
  • OUTPUT SWINGS TO 350mV OF RAILS
  • OUTPUT DRIVE CURRENT: 8mA
  • OPEN-LOOP GAIN: 90dB
  • MicroPACKAGES: SC70, SOT23-5, SOT23-8
  • APPLICATIONS
    • BATTERY PACKS AND POWER SUPPLIES
    • PORTABLE PHONES, PAGERS, AND CAMERAS
    • SOLAR-POWERED SYSTEMS
    • SMOKE, GAS, AND FIRE DETECTION SYSTEMS
    • REMOTE SENSORS
    • PCMCIA CARDS
    • DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS
    • MicroPOWER FILTERS

All trademarks are the property of their respective owners.

The OPA349 and OPA2349 are ultra-low power operational amplifiers that provide 70kHz bandwidth with only 1µA quiescent current. These rail-to-rail input and output amplifiers are specifically designed for battery-powered applications. The input common-mode voltage range extends 200mV beyond the power-supply rails and the output swings to within 350mV of the rails, maintaining wide dynamic range. Unlike some micropower op amps, these parts are unity-gain stable and require no external compensation to achieve wide bandwidth. The OPA349 features a low input bias current that allows the use of large source and feedback resistors.

The OPA349 can be operated with power supplies from 1.8V to 5.5V with little change in performance, ensuring continuing superior performance even in low battery situations.

The OPA349 comes in miniature SOT23-5, SC70, and SO-8 surface-mount packages. The OPA2349 dual is available in SOT23-8, and SO-8 surface-mount packages. These tiny packages are ideal for use in high-density applications, such as PCMCIA cards, battery packs, and portable instruments.

The OPA349 is specified for 0°C to +70°C. The OPA2349 is specified for –40°C to +70°C.

The OPA349 and OPA2349 are ultra-low power operational amplifiers that provide 70kHz bandwidth with only 1µA quiescent current. These rail-to-rail input and output amplifiers are specifically designed for battery-powered applications. The input common-mode voltage range extends 200mV beyond the power-supply rails and the output swings to within 350mV of the rails, maintaining wide dynamic range. Unlike some micropower op amps, these parts are unity-gain stable and require no external compensation to achieve wide bandwidth. The OPA349 features a low input bias current that allows the use of large source and feedback resistors.

The OPA349 can be operated with power supplies from 1.8V to 5.5V with little change in performance, ensuring continuing superior performance even in low battery situations.

The OPA349 comes in miniature SOT23-5, SC70, and SO-8 surface-mount packages. The OPA2349 dual is available in SOT23-8, and SO-8 surface-mount packages. These tiny packages are ideal for use in high-density applications, such as PCMCIA cards, battery packs, and portable instruments.

The OPA349 is specified for 0°C to +70°C. The OPA2349 is specified for –40°C to +70°C.
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Type Title Date
* Data sheet OPA349, OPA2349: 1uA, Rail-to-Rail, I/O, CMOS Operational Amplifiers datasheet (Rev. B) 07 Jan 2004
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

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