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General-purpose op amps

OPA2348

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Dual, 5.5-V, 1-MHz, low quiescent current (45-μA), RRIO operational amplifier

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Data sheet

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TLV9002 ACTIVE Dual, 5.5-V, 1-MHz, RRIO operational amplifier for cost-optimized applications Better accuracy (1.5mV Vos max), wider supply range (1.8V to 5.5V)

OPA2348

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.1 Rail-to-rail In, Out GBW (typ) (MHz) 1 Slew rate (typ) 0.5 Vos (offset voltage at 25°C) (max) (mV) 5 Iq per channel (typ) (mA) 0.045 Vn at 1 kHz (typ) (nV√Hz) 35 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (V/°C) 0.000004 Input bias current (max) (pA) 10 CMRR (typ) (dB) 82 Iout (typ) (A) 0.01 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.2 Input common mode headroom (to positive supply) (typ) (V) 0.2 Output swing headroom (to negative supply) (typ) (V) 0.018 Output swing headroom (to positive supply) (typ) (V) -0.018
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.1 Rail-to-rail In, Out GBW (typ) (MHz) 1 Slew rate (typ) 0.5 Vos (offset voltage at 25°C) (max) (mV) 5 Iq per channel (typ) (mA) 0.045 Vn at 1 kHz (typ) (nV√Hz) 35 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (V/°C) 0.000004 Input bias current (max) (pA) 10 CMRR (typ) (dB) 82 Iout (typ) (A) 0.01 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.2 Input common mode headroom (to positive supply) (typ) (V) 0.2 Output swing headroom (to negative supply) (typ) (V) 0.018 Output swing headroom (to positive supply) (typ) (V) -0.018
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DCN) 8 4.64 mm² 2.9 x 1.6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Low IQ: 45 µA (Typical)
  • Rail-To-Rail Input and Output
  • Single Supply: 2.1 V to 5.5 V
  • Input Bias Current: 0.5 pA
  • Micro Size Packages:
    • 5-Pin SC70
    • 8-Pin SOT-23
    • 14-Pin TSSOP
  • Excellent Bandwidth-to-Power Consumption Trade-off
  • Number of Channels:
    • OPA348: 1
    • OPA2348: 2
    • OPA4348: 4
  • Low IQ: 45 µA (Typical)
  • Rail-To-Rail Input and Output
  • Single Supply: 2.1 V to 5.5 V
  • Input Bias Current: 0.5 pA
  • Micro Size Packages:
    • 5-Pin SC70
    • 8-Pin SOT-23
    • 14-Pin TSSOP
  • Excellent Bandwidth-to-Power Consumption Trade-off
  • Number of Channels:
    • OPA348: 1
    • OPA2348: 2
    • OPA4348: 4

The OPAx348 series of amplifiers are single-supply, low-power, CMOS operational amplifiers. Featuring an extended bandwidth of 1 MHz, and a supply current of 45 µA, the OPAx348 series is useful for low-power applications on single supplies of 2.1 V to 5.5 V.

A low supply current of 45 µA and an input bias current of 0.5 pA, makes the OPAx348 series an optimal candidate for low-power applications such as smoke detectors and other high-impedance sensors.

The OPA348 is available in the miniature 5-pin SC70 (SOT), 5-pin SOT-23 (SOT), and 8-pin SO (SOIC) packages. The OPA2348 is available in 8-pin SOT-23 (SOT) and 8-pin SO (SOIC) packages, and the OPA4348 is offered in space-saving 14-pin TSSOP and 14-pin SO (SOIC) packages. The extended temperature range of –40°C to +125°C over all supply voltages offers design flexibility.

The OPAx348 series of amplifiers are single-supply, low-power, CMOS operational amplifiers. Featuring an extended bandwidth of 1 MHz, and a supply current of 45 µA, the OPAx348 series is useful for low-power applications on single supplies of 2.1 V to 5.5 V.

A low supply current of 45 µA and an input bias current of 0.5 pA, makes the OPAx348 series an optimal candidate for low-power applications such as smoke detectors and other high-impedance sensors.

The OPA348 is available in the miniature 5-pin SC70 (SOT), 5-pin SOT-23 (SOT), and 8-pin SO (SOIC) packages. The OPA2348 is available in 8-pin SOT-23 (SOT) and 8-pin SO (SOIC) packages, and the OPA4348 is offered in space-saving 14-pin TSSOP and 14-pin SO (SOIC) packages. The extended temperature range of –40°C to +125°C over all supply voltages offers design flexibility.
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Technical documentation

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Type Title Date
* Data sheet OPAx348 1-MHz, 45-μA, CMOS, Rail-to-Rail Operational Amplifiers datasheet (Rev. H) 20 Jan 2016
Technical article What is an op amp? 21 Jan 2020
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

User guide: PDF
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Evaluation board

DUAL-DIYAMP-EVM — Dual Channel Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module

The DUAL-DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is designed specifically for dual package op amps in the (...)
User guide: PDF
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Simulation model

OPAx348 PSpice Model (Rev. B)

SBOC001B.ZIP (32 KB) - PSpice Model
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Simulation model

OPAx348 TINA-TI Reference Design (Rev. C)

SBOC201C.ZIP (45 KB) - TINA-TI Reference Design
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Simulation model

OPAx348 TINA-TI Spice Model (Rev. B)

SBOM279B.ZIP (4 KB) - TINA-TI Spice Model
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
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Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
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Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DCN) 8 View options
VSSOP (DGK) 8 View options

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