SoundPlus™ Audio Operational Amplifier with Low Distortion, Low Noise and Precision - OPA2134


SoundPlus™ Audio Operational Amplifier with Low Distortion, Low Noise and Precision


Special Note

For newer devices, see OPA1642, OPA1652, or OPA1688.


The OPA134 series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. A true FET input stage is incorporated to provide superior sound quality and speed for exceptional audio performance. This, in combination with high output drive capability and excellent DC performance, allows for use in a wide variety of demanding applications. In addition, the OPA134 has a wide output swing, to within 1 V of the rails, allowing increased headroom and making it ideal for use in any audio circuit.

The OPA134 SoundPlus™ audio operational amplifiers are easy to use and free from phase-inversion and the overload problems often found in common FET-input operational amplifiers. They can be operated from ±2.5-V to ±18-V power supplies. Input cascode circuitry provides excellent common-mode rejection and maintains low input bias current over its wide input voltage range, minimizing distortion. OPA134 series operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions, including high load capacitance. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Single and dual versions are available in 8-pin DIP and SO-8 surface-mount packages in standard configurations. The quad is available in 14-pin DIP and SO-14 surface mount packages. All are specified for –40°C to 85°C operation. A SPICE macromodel is available for design analysis.


  • Superior Sound Quality
  • Ultra Low Distortion: 0.00008%
  • Low Noise: 8 nV/√Hz
  • True FET-Input: IB = 5pA
  • High Speed:
    • Slew Rate: 20 V/µs
    • Bandwidth: 8 MHz
  • High Open-Loop Gain: 120 dB (600 Ω)
  • Wide Supply Range: ±2.5 V to ±18 V
  • Single, Dual, and Quad Versions

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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)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
Additional Features
OPA2134 OPA134 OPA1642 OPA1652 OPA1688 OPA4134
2    1    2    2    2    4   
5    5    5    4.5    4.5    5   
36    36    36    36    36    36   
8    8    11    18    10    8   
20    20    20    10    8    20   
No    No    In to V-
No    In to V-
2    2    3.5    1.5    1.5    2   
2    2    0    2    0.5    2   
4    4    1.8    2    1.6    4   
8    8    5.1    4.5    8    8   
100    100    126    110    120    100   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
1.50 | 1ku    1.10 | 1ku    1.40 | 1ku    0.65 | 1ku    0.60 | 1ku    2.00 | 1ku   
See datasheet (PDIP)    See datasheet (PDIP)    8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
See datasheet (SON)    See datasheet (SON)    See datasheet (PDIP)   
100    100    20    100    20    100   
40    40    30    50    75    40   
Burr-Brown™ Audio    Burr-Brown™ Audio    Burr-Brown™ Audio
High CMR   
Burr-Brown™ Audio    Burr-Brown™ Audio
EMI Hardened
High CMR
High Cload Drive   
Burr-Brown™ Audio   
FET    FET    FET    CMOS    CMOS    FET   

WEBENCH® Designer OPA2134

Amplifier Topology
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