OPA1642-Q1 Automotive SoundPlus™ High-Performance, JFET-Input Audio Op Amps | TI.com


Automotive SoundPlus™ High-Performance, JFET-Input Audio Op Amps

Automotive SoundPlus™ High-Performance, JFET-Input Audio Op Amps - OPA1642-Q1


The OPA1641-Q1 (single) and OPA1642-Q1 (dual) series are JFET-input, ultra-low distortion, low-noise operational amplifiers (op amps) fully specified for audio applications.

The 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 total harmonic distortion + noise (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 OPA164x-Q1 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Low Noise: 5.1 nV/√Hz at 1 kHz
  • Ultra-low 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 Audio 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)
THD + N @ 1 kHz (Typ) (%)
Operating Temperature Range (C)
Package Group
Output Current (Typ) (mA)
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
OPA1642-Q1 OPA1612-Q1 OPA1662-Q1
2     2     2    
4.5     4.5     3    
36     36     36    
11     40     22    
20     27     17    
Out     Out     Out    
3.5     0.5     1.5    
1.8     3.6     1.5    
5.1     1.1     3.3    
Burr-Brown™ Audio     N/A     N/A    
0.00005     0.000015     0.0002    
Automotive     Automotive     Automotive    
-40 to 125     -40 to 125     -40 to 85    
  55     40    
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)     8SOIC: 29 mm2: 6 x 4.9(SOIC)     8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
FET     Bipolar     Bipolar    
126     120     100    
20     250000     1200000    

Other qualified versions of OPA1642-Q1

Version Part Number Definition
Catalog OPA1642 TI's standard catalog product

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