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OPA1637

ACTIVE

High-fidelity, high-voltage (36-V), low-noise (3.7-nV/rtHz) Burr-Brown™ audio fully-differential amp

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Data sheet

OPA1637

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 9.2 Slew rate (typ) (V/µs) 15 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.2 Iq per channel (typ) (mA) 0.95 Vn at 1 kHz (typ) (nV√Hz) 3.7 Features Burr-Brown™ Audio, Premium Sound THD + N at 1 kHz (typ) (%) 0.0001 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.031 Product type Premier Architecture Bipolar CMRR (typ) (dB) 140 Input bias current (max) (pA) 2000
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 9.2 Slew rate (typ) (V/µs) 15 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.2 Iq per channel (typ) (mA) 0.95 Vn at 1 kHz (typ) (nV√Hz) 3.7 Features Burr-Brown™ Audio, Premium Sound THD + N at 1 kHz (typ) (%) 0.0001 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.031 Product type Premier Architecture Bipolar CMRR (typ) (dB) 140 Input bias current (max) (pA) 2000
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Low input voltage noise: 3.7 nV/√Hz at 1 kHz
  • Low THD + N: –120 dB at 1 kHz
  • Low supply current: 950 µA at ±18 V
  • Input offset voltage: ±200 µV (maximum)
  • Input bias current: 2 nA (maximum)
  • Low bias current noise: 400 fA/√Hz at 10 Hz
  • Gain-bandwidth product: 9.2 MHz
  • Differential output slew rate: 15 V/µs
  • Wide input and output common-mode range
  • Wide single-supply operating range: 3 V to 36 V
  • Low supply current power-down feature: < 20 µA
  • Overload power limit
  • Current limit
  • Package: 8-pin VSSOP
  • Temperature range: –40°C to +125°C
  • Low input voltage noise: 3.7 nV/√Hz at 1 kHz
  • Low THD + N: –120 dB at 1 kHz
  • Low supply current: 950 µA at ±18 V
  • Input offset voltage: ±200 µV (maximum)
  • Input bias current: 2 nA (maximum)
  • Low bias current noise: 400 fA/√Hz at 10 Hz
  • Gain-bandwidth product: 9.2 MHz
  • Differential output slew rate: 15 V/µs
  • Wide input and output common-mode range
  • Wide single-supply operating range: 3 V to 36 V
  • Low supply current power-down feature: < 20 µA
  • Overload power limit
  • Current limit
  • Package: 8-pin VSSOP
  • Temperature range: –40°C to +125°C

The OPA1637 is a low-noise, low total harmonic distortion (THD), fully differential, Burr-Brown™ Audio operational amplifier that easily filters and drives fully differential, audio signal chains.

The OPA1637 also converts single-ended sources to differential outputs required by high-fidelity analog-to-digital converters (ADCs). Designed for exceptional low noise and THD, the bipolar super-beta inputs yield a very low noise figure at very-low quiescent current and input bias current. This device is designed for audio circuits where low power consumption is required along with excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).

The OPA1637 features high-voltage supply capability, allowing for supply voltages up to ±18 V. This capability allows high-voltage differential signal chains to benefit from the improved headroom and dynamic range without adding separate amplifiers for each polarity of the differential signal. Very-low voltage and current noise enables the OPA1637 for use in high-gain configurations with minimal impact to the audio signal noise.

The OPA1637 is characterized for operation over the wide temperature range of –40°C to +125°C, and is available in an 8-pin VSSOP package.

The OPA1637 is a low-noise, low total harmonic distortion (THD), fully differential, Burr-Brown™ Audio operational amplifier that easily filters and drives fully differential, audio signal chains.

The OPA1637 also converts single-ended sources to differential outputs required by high-fidelity analog-to-digital converters (ADCs). Designed for exceptional low noise and THD, the bipolar super-beta inputs yield a very low noise figure at very-low quiescent current and input bias current. This device is designed for audio circuits where low power consumption is required along with excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).

The OPA1637 features high-voltage supply capability, allowing for supply voltages up to ±18 V. This capability allows high-voltage differential signal chains to benefit from the improved headroom and dynamic range without adding separate amplifiers for each polarity of the differential signal. Very-low voltage and current noise enables the OPA1637 for use in high-gain configurations with minimal impact to the audio signal noise.

The OPA1637 is characterized for operation over the wide temperature range of –40°C to +125°C, and is available in an 8-pin VSSOP package.
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Technical documentation

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* Data sheet OPA1637 High-Fidelity, Low-Noise, Fully-Differential, Burr-Brown™ Audio Operational Amplifier datasheet (Rev. B) PDF | HTML 18 Aug 2020
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 14 Jun 2021
Application note Optimizing Noise and Power with Super Beta-Fully Differential Amplifiers PDF | HTML 07 Dec 2020
Certificate OPA1637EVM EU Declaration of Conformity (DoC) 25 Jun 2020
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

Design & development

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User guide: PDF | HTML
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