SBOS484 – DECEMBER 2009
™ High-Performance, JFET-Input
AUDIO OPERATIONAL AMPLIFIERS
Check for Samples:
OPA1641 OPA1642 OPA1644
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 5.1nV/√Hz noise, low THD+N
(0.00005%), a low input bias current of 2pA, and low
quiescent current of 1.8mA per channel.
These devices operate over a very wide supply
voltage range of ±2.25V to ±18V. The OPA1641,
OPA1642, and OPA1644 series of op amps 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
specified from –40°C to +85°C.
• SUPERIOR SOUND QUALITY
• TRUE JFET INPUT OP AMP
WITH LOW INPUT BIAS CURRENT
• LOW NOISE: 5.1nV/√Hz at 1kHz
• ULTRALOW DISTORTION: 0.00005% at 1kHz
• HIGH SLEW RATE: 20V/μs
• UNITY GAIN STABLE
• NO PHASE REVERSAL
• LOW QUIESCENT CURRENT:
1.8mA per Channel
• RAIL-TO-RAIL OUTPUT
• WIDE SUPPLY RANGE: ±2.25V to ±18V
• SINGLE, DUAL, AND QUAD VERSIONS
PROFESSIONAL AUDIO EQUIPMENT
ANALOG AND DIGITAL MIXING CONSOLES
BROADCAST STUDIO EQUIPMENT
HIGH-END A/V RECEIVERS
HIGH-END BLU-RAY™ PLAYERS
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SoundPlus is a trademark of Texas Instruments Incorporated.
BLU-RAY is a trademark of Blu-Ray Disc Assocation.
All other trademarks are the property of their respective owners.
Copyright © 2009, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.