OPA1641_15 Datasheet, PDF (1/29 Pages) Texas Instruments – High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS

Burr-Brown Audio
www.ti.com
OPA1641
OPA1642
OPA1644
OPA1641
OPA1642
OPA1644
SBOS484B – DECEMBER 2009 – REVISED AUGUST 2010
™ High-Performance, JFET-Input
AUDIO OPERATIONAL AMPLIFIERS
Check for Samples: OPA1641, OPA1642, OPA1644
FEATURES
1
•234 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/ms
• 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
AVAILABLE
APPLICATIONS
• PROFESSIONAL AUDIO EQUIPMENT
• ANALOG AND DIGITAL MIXING CONSOLES
• BROADCAST STUDIO EQUIPMENT
• HIGH-END A/V RECEIVERS
• HIGH-END BLU-RAY™ PLAYERS
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 5.1nV/√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 are
specified from –40°C to +85°C. SoundPlus™
V+
Pre-Output Driver
IN-
IN+
OUT
V-
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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.
2
BLU-RAY is a trademark of Blu-Ray Disc Assocation.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated