OPA1644 Series

OPA1641/1642/1644 SoundPLUS™ High-Performance, JFET-Input Audio OpAmps

Catalog

OPA1641/1642/1644 SoundPLUS™ High-Performance, JFET-Input Audio OpAmps

Part	Package / Case [custom]	Package / Case [custom]	Package / Case	Mounting Type	Voltage - Supply Span (Min) [Min]	Output Type	Amplifier Type	Voltage - Supply Span (Max) [Max]	Current - Input Bias	Current - Supply	Voltage - Input Offset	Slew Rate	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output / Channel	Gain Bandwidth Product	Number of Circuits	Supplier Device Package	Package / Case [x]	Package / Case [y]
Texas Instruments OPA1644AIPW	0.173 "	4.4 mm	14-TSSOP	Surface Mount	4.5 V	Rail-to-Rail	Audio	36 V	2 pA	1.8 mA	1 mV	20 V/çs	85 °C	-40 °C	36 mA	11 MHz	4	14-TSSOP
Texas Instruments OPA1644AIDR			14-SOIC	Surface Mount	4.5 V	Rail-to-Rail	Audio	36 V	2 pA	1.8 mA	1 mV	20 V/çs	85 °C	-40 °C	36 mA	11 MHz	4		0.154 in	3.9 mm

Catalog

OPA1641/1642/1644 SoundPLUS™ High-Performance, JFET-Input Audio OpAmps

Key Features

• Superior Sound QualityTrue JFET Input Operational AmplifierWith Low Input Bias CurrentLow Noise: 5.1 nV/√Hzat 1 kHzUltralow Distortion: 0.00005% at 1 kHzHigh Slew Rate: 20 V/µsUnity Gain StableNo Phase ReversalLow Quiescent Current:1.8 mA per ChannelRail-to-rail OutputWide Supply Range: ±2.25 V to ±18 VSingle, Dual, and Quad Versions AvailableSuperior Sound QualityTrue JFET Input Operational AmplifierWith Low Input Bias CurrentLow Noise: 5.1 nV/√Hzat 1 kHzUltralow Distortion: 0.00005% at 1 kHzHigh Slew Rate: 20 V/µsUnity Gain StableNo Phase ReversalLow Quiescent Current:1.8 mA per ChannelRail-to-rail OutputWide Supply Range: ±2.25 V to ±18 VSingle, Dual, and Quad Versions Available

Description

The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5.1-nV/√Hznoise, low THD+N (0.00005%), a low input bias current of 2 pA, and low quiescent current of 1.8 mA per channel. These devices operate over a very wide supply voltage range of ±2.25 V to ±18 V. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. The OPA1641, OPA1642, and OPA1644 are specified from –40°C to +85°C. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5.1-nV/√Hznoise, low THD+N (0.00005%), a low input bias current of 2 pA, and low quiescent current of 1.8 mA per channel. These devices operate over a very wide supply voltage range of ±2.25 V to ±18 V. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. The OPA1641, OPA1642, and OPA1644 are specified from –40°C to +85°C.