OPA1637 Series

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

Catalog

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

Part	Number of Circuits	Voltage - Supply Span (Min) [Min]	Voltage - Supply Span (Max) [Max]	Package / Case	Package / Case [custom]	Package / Case	Mounting Type	Current - Output / Channel	Current - Input Bias	Voltage - Input Offset	Operating Temperature [Min]	Operating Temperature [Max]	Amplifier Type	Slew Rate	Gain Bandwidth Product	Current - Supply	-3db Bandwidth	Output Type
Texas Instruments OPA1637DGKT	1	3 V	36 V	8-MSOP 8-TSSOP	0.118 in	3 mm	Surface Mount	31 mA	200 pA	20 çV	-40 °C	125 °C	Audio	15 V/µs	9.2 MHz	950 µA	7 MHz	Differential

Catalog

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

Key Features

• Low input voltage noise: 3.7 nV/√Hzat 1 kHzLow THD + N: –120 dB at 1 kHzLow supply current: 950 µA at ±18 VInput offset voltage: ±200 µV (maximum)Input bias current: 2 nA (maximum)Low bias current noise: 400 fA/√Hzat 10 HzGain-bandwidth product: 9.2 MHzDifferential output slew rate: 15 V/µsWide input and output common-mode rangeWide single-supply operating range: 3 V to 36 VLow supply current power-down feature: < 20 µAOverload power limitCurrent limitPackage: 8-pin VSSOPTemperature range: –40°C to +125°CLow input voltage noise: 3.7 nV/√Hzat 1 kHzLow THD + N: –120 dB at 1 kHzLow supply current: 950 µA at ±18 VInput offset voltage: ±200 µV (maximum)Input bias current: 2 nA (maximum)Low bias current noise: 400 fA/√Hzat 10 HzGain-bandwidth product: 9.2 MHzDifferential output slew rate: 15 V/µsWide input and output common-mode rangeWide single-supply operating range: 3 V to 36 VLow supply current power-down feature: < 20 µAOverload power limitCurrent limitPackage: 8-pin VSSOPTemperature range: –40°C to +125°C

Description

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.