The OPA1637 is a low-noise, low total harmonic distortion (THD), Burr-Brown™ fully differential amplifier that easily filters and drives fully differential, audio signal chains. The OPA1637 is also used to convert 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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|Part number||Order||Number of channels (#)||Total supply voltage (Min) (+5V=5, +/-5V=10)||Total supply voltage (Max) (+5V=5, +/-5V=10)||GBW (Typ) (MHz)||Slew rate (Typ) (V/us)||Rail-to-rail||Vos (offset voltage @ 25 C) (Max) (mV)||Iq per channel (Typ) (mA)||Vn at 1 kHz (Typ) (nV/rtHz)||Features||THD + N @ 1 kHz (Typ) (%)||Rating||Operating temperature range (C)||Package Group||Output current (Typ) (mA)||Package size: mm2:W x L (PKG)||Architecture||CMRR (Typ) (dB)||Input bias current (Max) (pA)|
|0.0001||Catalog||-40 to 125||VSSOP | 8||31||8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)||Bipolar||140||2000|
|0.000022||Catalog||-40 to 85||
HVSSOP | 8
SOIC | 8
8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)