FEATURES
● LOW DISTORTION: 0.0003% at 1kHz
● LOW NOISE: 10nV/√Hz
● HIGH SLEW RATE: 25V/µs
● WIDE GAIN-BANDWIDTH: 20MHz
● UNITY-GAIN STABLE
● WIDE SUPPLY RANGE: V
S
= ±4.5 to ±24V
● DRIVES 600Ω LOAD
● DUAL VERSION AVAILABLE (OPA2604)
FET-Input, Low Distortion
OPERATIONAL AMPLIFIER
APPLICATIONS
● PROFESSIONAL AUDIO EQUIPMENT
● PCM DAC I/V CONVERTERS
● SPECTRAL ANALYSIS EQUIPMENT
● ACTIVE FILTERS
● TRANSDUCER AMPLIFIERS
● DATA ACQUISITION
OPA604
DESCRIPTION
The OPA604 is a FET-input operational amplifier designed
for enhanced AC performance. Very low distortion, low noise
and wide bandwidth provide superior performance in high
quality audio and other applications requiring excellent dy-
namic performance.
New circuit techniques and special laser trimming of dynamic
circuit performance yield very low harmonic distortion. The
result is an op amp with exceptional sound quality. The low-
noise FET input of the OPA604 provides wide dynamic
range, even with high source impedance. Offset voltage is
laser-trimmed to minimize the need for interstage coupling
capacitors.
The OPA604 is available in 8-pin plastic mini-DIP and SO-8
surface-mount packages, specified for the –25°C to +85°C
temperature range.
Distortion
Rejection
Circuitry
(1)
(3)
(+)
(2)
(–)
(7)
V+
(6)
V
O
(4)
V–
Output
Stage
(1)
NOTE: (1) Patents Granted: #5053718, 5019789
(5)
(1)
O
P
A
6
0
4
O
P
A
6
0
4
SBOS019A – JANUARY 1992 – SEPTEMBER 2003
www.ti.com
PRODUCTION DATA information is 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.
Copyright © 1992-2003, Texas Instruments Incorporated
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.
All trademarks are the property of their respective owners.
