FET-Input, Audio Operational Amplifier - OPA604

OPA604 (ACTIVE)

FET-Input, Audio Operational Amplifier

Special Note

For newer devices, see OPA1641.

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 dynamic 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.

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: VS = ±4.5 to ±24V
  • DRIVES 600 LOAD
  • DUAL VERSION AVAILABLE (OPA2604)
  • APPLICATIONS
    • PROFESSIONAL AUDIO EQUIPMENT
    • PCM DAC I/V CONVERTERS
    • SPECTRAL ANALYSIS EQUIPMENT
    • ACTIVE FILTERS
    • TRANSDUCER AMPLIFIERS
    • DATA ACQUISITION

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Parametrics Compare all products in Precision Amplifier

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
Offset Drift (Typ) (uV/C)
IIB (Max) (pA)
Io (Typ) (mA)
CMRR (Typ) (dB)
Architecture
Additional Features
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
OPA604 OPA2604
1     2    
9     9    
48     48    
20     20    
25     25    
5     5    
5.3     5.25    
11     11    
8     8    
200     1000    
35     35    
100     100    
FET     FET    
Vos Adj Pin     Vos Adj Pin    
  -40 to 85    
8PDIP
8SOIC    
8PDIP
8SOIC    
1.05 | 1ku     1.90 | 1ku    

Featured tools and software

WEBENCH® Designer OPA604

Filter Type
 Lowpass
 Highpass
 Bandpass
 Bandstop
 
Cutoff Frequency  Hz
Gain  dB
Filter Response
Filter Order