Sound-Plus High-Performance, JFET-Input Audio OpAmps - OPA1642

OPA1642 (ACTIVE)

Sound-Plus High-Performance, JFET-Input Audio OpAmps

 

Recommended alternative parts

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 5.1-nV/√Hz noise, low THD+N (0.00005%), a low input bias current of 2 pA, and low quiescent current of 1.8 mA per channel.

These devices operate over a very wide supply voltage range of ±2.25 V to ±18 V. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers 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.

Features

  • Superior Sound Quality
  • True JFET Input Operational Amplifier
    With Low Input Bias Current
  • Low Noise: 5.1 nV/√Hz at 1 kHz
  • Ultralow Distortion: 0.00005% at 1 kHz
  • High Slew Rate: 20 V/µs
  • Unity Gain Stable
  • No Phase Reversal
  • Low Quiescent Current:
    1.8 mA per Channel
  • Rail-to-rail Output
  • Wide Supply Range: ±2.25 V to ±18 V
  • Single, Dual, and Quad Versions Available

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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)
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
OPA1642 OPA1612 OPA1641 OPA1644 OPA1652 OPA1654 OPA1662 OPA1662-Q1 OPA1664 OPA1688
2     2     1     4     2     4     2     2     4     2    
5     5     5     5     4.5     4.5     3     3     3     4.5    
36     36     36     36     36     36     36     36     36     36    
11     40     11     11     18     18     22     22     22     10    
20     27     20     20     10     10     17     17     17     8    
3.5     0.5     3.5     3.5     1.5     1.5     1.5     1.5     1.5     1.5    
1.8     3.6     1.8     1.8     2     2     1.5     1.5     1.5     1.6    
5.1     1.1     5.1     5.1     4.5     4.5     3.3     3.3     3.3     8    
126     120     126     126     110     110     100     100     100     120    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
SOIC
VSSOP    
SOIC
SON    
SOIC
VSSOP    
SOIC
TSSOP    
SOIC
SON
VSSOP    
SOIC
TSSOP    
SOIC
VSSOP    
SOIC
VSSOP    
SOIC
TSSOP    
SOIC
SON    
1.40 | 1ku     2.75 | 1ku     0.95 | 1ku     1.95 | 1ku     0.65 | 1ku     0.95 | 1ku     0.75 | 1ku     0.88 | 1ku     1.10 | 1ku     0.60 | 1ku    
0     1     0     0     2     2     2     2     2     0.5    
8VSSOP: 15 mm2: 4.9 x 3
8SOIC: 29 mm2: 6 x 4.9    
8SON: 9 mm2: 3 x 3
8SOIC: 29 mm2: 6 x 4.9    
8VSSOP: 15 mm2: 4.9 x 3
8SOIC: 29 mm2: 6 x 4.9    
14TSSOP: 32 mm2: 6.4 x 5
14SOIC: 52 mm2: 6 x 8.65    
8SON: 9 mm2: 3 x 3
8VSSOP: 15 mm2: 4.9 x 3
8SOIC: 29 mm2: 6 x 4.9    
14TSSOP: 32 mm2: 6.4 x 5
14SOIC: 52 mm2: 6 x 8.65    
8VSSOP: 15 mm2: 4.9 x 3
8SOIC: 29 mm2: 6 x 4.9    
8VSSOP: 15 mm2: 4.9 x 3
8SOIC: 29 mm2: 6 x 4.9    
14TSSOP: 32 mm2: 6.4 x 5
14SOIC: 52 mm2: 6 x 8.65    
8SON: 9 mm2: 3 x 3
8SOIC: 29 mm2: 6 x 4.9    
20     250000     20     20     100     100     1200000     1200000     1200000     20    
30     55     30     30     50     50     40     40     40     75    
Burr-Brown™ Audio     Burr-Brown™ Audio     Burr-Brown™ Audio     Burr-Brown™ Audio     Burr-Brown™ Audio     Burr-Brown™ Audio     Burr-Brown™ Audio       Burr-Brown™ Audio     Burr-Brown™ Audio    

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WEBENCH® Designer OPA1642

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 4.5 to 36.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 85.0 °C