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

View more

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)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
Additional Features
Architecture
OPA1642 OPA1612 OPA1652 OPA1654 OPA1662 OPA1662-Q1 OPA1664 OPA1688 OPA2134 OPA2604 OPA4134 OPA604
2    2    2    4    2    2    4    2    2    2    4    1   
5    5    4.5    4.5    3    3    3    4.5    5    9    5    9   
36    36    36    36    36    36    36    36    36    48    36    48   
11    40    18    18    22    22    22    10    8    20    8    20   
20    27    10    10    17    17    17    8    20    25    20    25   
In to V-
Out   
Out    No    No    Out    Out    No    In to V-
Out   
No    No    No    No   
3.5    0.5    1.5    1.5    1.5    1.5    1.5    1.5    2    5    2    5   
  1    2    2    2    2    2    0.5    2    8    2    8   
1.8    3.6    2    2    1.5    1.5    1.5    1.6    4    5.25    4    5.3   
5.1    1.1    4.5    4.5    3.3    3.3    3.3    8    8    11    8    11   
126    120    110    110    100    100    100    120    100    100    100    100   
Catalog    Catalog    Catalog    Catalog    Catalog    Automotive    Catalog    Catalog    Catalog    Catalog    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    -40 to 85    -40 to 85   
SOIC
VSSOP   
SOIC
SON   
SOIC
SON
VSSOP   
SOIC
TSSOP   
SOIC
VSSOP   
SOIC
VSSOP   
SOIC
TSSOP   
SOIC
SON   
PDIP
SOIC   
PDIP
SOIC   
SOIC    PDIP
SOIC   
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
See datasheet (SON)    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)    See datasheet (PDIP)    See datasheet (PDIP)    14SOIC: 52 mm2: 6 x 8.65(SOIC)    See datasheet (PDIP)   
20    250000    100    100    1200000    1200000    1200000    20    100    1000    100    200   
30    55    50    50    40    40    40    75    40    35    40    35   
Burr-Brown™ Audio    Burr-Brown™ Audio
Tiny Package   
Burr-Brown™ Audio
Tiny Package   
Burr-Brown™ Audio    Burr-Brown™ Audio    N/A    Burr-Brown™ Audio    Burr-Brown™ Audio
EMI Hardened
High Cload Drive
Tiny Package   
Burr-Brown™ Audio    Burr-Brown™ Audio    Burr-Brown™ Audio    Burr-Brown™ Audio   
FET    Bipolar    CMOS    CMOS    Bipolar    Bipolar    Bipolar    CMOS    FET    FET    FET    FET   

Other qualified versions of OPA1642

Version Part Number Definition
Automotive OPA1642-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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