Automotive Sound-Plus High-Performance, JFET-Input Audio Op Amps

Automotive Sound-Plus 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

All trademarks are the property of their respective owners.

View more

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

Featured tools and software