Automotive Sound-Plus High-Performance, JFET-Input Audio Op Amps - OPA1641-Q1


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



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 (#)
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
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
OPA1641-Q1 OPA1642-Q1
1    2   
11    11   
20    20   
Out    Out   
3.5    3.5   
1.8    1.8   
5.1    5.1   
0.00005    0.00005   
Automotive    Automotive   
-40 to 125    -40 to 125   
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
FET    FET   
126    126   
20    20   

Other qualified versions of OPA1641-Q1

Version Part Number Definition
Catalog OPA1641 TI's standard catalog product

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