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 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)
Rail-to-Rail
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:W x L (PKG)
IIB (Max) (pA)
Output Current (Typ) (mA)
Additional Features
Architecture
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   
In to V-
Out   
Out    In to V-
Out   
In to V-
Out   
No    No    Out    Out    No    In to V-
Out   
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(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
See datasheet (SON)    8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
14TSSOP: 32 mm2: 6.4 x 5(TSSOP)
14SOIC: 52 mm2: 6 x 8.65(SOIC)   
See datasheet (SON)    14TSSOP: 32 mm2: 6.4 x 5(TSSOP)
14SOIC: 52 mm2: 6 x 8.65(SOIC)   
See datasheet (SON)    8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
14TSSOP: 32 mm2: 6.4 x 5(TSSOP)
14SOIC: 52 mm2: 6 x 8.65(SOIC)   
See datasheet (SON)   
20    250000    20    20    100    100    1200000    1200000    1200000    20   
30    55    30    30    50    50    40    40    40    75   
Burr-Brown™ Audio
High CMR   
Burr-Brown™ Audio
High CMR   
Burr-Brown™ Audio
High CMR   
Burr-Brown™ Audio
High CMR   
Burr-Brown™ Audio    Burr-Brown™ Audio    Burr-Brown™ Audio    N/A    Burr-Brown™ Audio    Burr-Brown™ Audio
EMI Hardened
High CMR
High Cload Drive   
FET    Bipolar    FET    CMOS    CMOS    CMOS    Bipolar    Bipolar    Bipolar    CMOS   

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  • Broadcast Studio Equipment
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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