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Product details

Parameters

Number of channels (#) 4 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 GBW (Typ) (MHz) 16 Slew rate (Typ) (V/us) 9 Rail-to-rail Out Vos (offset voltage @ 25 C) (Max) (mV) 2 Iq per channel (Typ) (mA) 2 Vn at 1 kHz (Typ) (nV/rtHz) 4.5 THD + N @ 1 kHz (Typ) (%) 0.0001 Rating Automotive Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 25 Architecture FET CMRR (Typ) (dB) 110 open-in-new Find other Audio op amps

Package | Pins | Size

WQFN (RUM) 16 16 mm² 4 x 4 open-in-new Find other Audio op amps

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Low noise: 4.5 nV/√Hz at 1 kHz
  • Low distortion: 0.0001% at 1 kHz
  • High open-loop gain: 114 dB
  • Low quiescent current:
    • 2 mA per channel
  • Low input bias current: 10 pA (typical)
  • Slew rate: 9 V/µs
  • Wide gain bandwidth: 16 MHz (G = 1)
  • Rail-to-rail output
  • Wide supply range:
    • ±2.25 V to ±18 V, or 4.5 V to 36 V
  • Available packages:
    • Dual: SOIC-8 (Preview)
    • Quad: Small QFN-16
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Description

The dual-channel OPA1678-Q1 and quad-channel OPA1679-Q1 (OPA167x-Q1) operational amplifiers offer higher system-level performance over legacy op amps commonly used in audio circuitry. The OPA167x-Q1 amplifiers achieve a low 4.5-nV/√Hz noise density and low distortion of 0.0001% at 1 kHz, which improves audio signal fidelity. These devices also offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range.

To accommodate the power-supply constraints of many types of audio products, the OPA167x-Q1 operate over a very wide supply range of ±2.25 V to ±18 V (or 4.5 V to 36 V) on only 2 mA of supply current. These op amps are unity-gain stable and have excellent dynamic behavior over a wide range of load conditions allowing the OPA167x-Q1 to be used in many audio circuits.

The OPA167x-Q1 temperature ranges are specified from –40°C to +125°C.

 

 

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Technical documentation

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Type Title Date
* Data sheet OPA167x-Q1 Automotive, Low-Distortion, Audio Operational Amplifiers datasheet Dec. 06, 2017
Technical article No headroom, no problem: buffering and filtering an audio signal chain in low-voltage systems Apr. 11, 2019
Technical article Amp up your cans: Is your op amp stable? (Part 2) Jan. 22, 2016
Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 2) Dec. 23, 2014
Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 1) Dec. 19, 2014
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) Mar. 30, 2005

Design & development

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Design tools & simulation

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
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SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
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Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

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WQFN (RUM) 16 View options

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