OPA1642 Dual sound-plus high-performance, JFET-input audio op amps   | TI.com

OPA1642 (ACTIVE) Dual sound-plus high-performance, JFET-input audio op amps  

 

Higher-performance alternatives for cost ptimized alternatives:

Obtain higher bandwidth (53MHz), lower noise (4.3nV/√Hz), and higher output drive (100mA) with the OPA1656

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

Parametrics

Compare all products in Audio op amps Email Download to Excel
Part number Order 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 @ 25 C) (Max) (mV) Iq per channel (Typ) (mA) Vn at 1 kHz (Typ) (nV/rtHz) Features THD + N @ 1 kHz (Typ) (%) Rating Operating temperature range (C) Package Group Output current (Typ) (mA) Package size: mm2:W x L (PKG) Architecture CMRR (Typ) (dB) Input bias current (Max) (pA)
OPA1642 Order now 2     5     36     11     20     In to V-
Out    
3.5     1.8     5.1     Burr-Brown™ Audio
Premium Sound    
0.00005     Catalog     -40 to 85     SOIC | 8
VSSOP | 8    
30     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
FET     126     20    
OPA1656 Samples not available 2     4.5     36     50     23     Out     1     4.0     4.0     Burr-Brown™ Audio
Premium Sound    
0.00001     Catalog     -40 to 125     SOIC | 8     100     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     CMOS     136     10    
OPA1678 Order now 2     4.5     36     16     9     Out     2     2     4.5         0.0001     Catalog     -40 to 85     SOIC | 8
SON | 8
VSSOP | 8    
50     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
See datasheet (SON)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
FET     110      
OPA1688 Order now 2     4.5     36     10     8     In to V-
Out    
1.5     1.6     8     Burr-Brown™ Audio
EMI Hardened
High Cload Drive
Small Size    
0.00005     Catalog     -40 to 85     SOIC | 8
SON | 8    
75     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
See datasheet (SON)    
CMOS     120     20