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 Op Amps

 
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)
CMRR (Typ) (dB)
Rating
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Offset Drift (Typ) (uV/C)
Package Size (mm2=WxL)
IIB (Max) (pA)
Output Current (Typ) (mA)
Additional Features
Architecture
OPA604 OPA2604
1     2    
9     9    
48     48    
20     20    
25     25    
5     5    
5.3     5.25    
11     11    
100     100    
Catalog     Catalog    
  -40 to 85    
PDIP
SOIC    
PDIP
SOIC    
1.05 | 1ku     1.90 | 1ku    
8     8    
8SOIC: 29 mm2: 6 x 4.9     8SOIC: 29 mm2: 6 x 4.9    
200     1000    
35     35    
Burr-Brown™ Audio
Vos Adj Pin    
Burr-Brown™ Audio
Vos Adj Pin    
FET     FET    

Featured tools and software

WEBENCH® Designer OPA604

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 9.0 to 48.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -25.0 °C
Maximum Temperature = 85.0 °C