Low Power, Precision, 105 MHz, Voltage Feedback Op Amp - OPA837

OPA837 (ACTIVE)

Low Power, Precision, 105 MHz, Voltage Feedback Op Amp

 

Description

The OPA837 device is a unity-gain stable, voltage-feedback op amp that provides among the highest MHz per mW of bandwidth versus power among precision op amps. Using only 600 µA on a single 5-V supply, this 3.0-mW device delivers 105-MHz bandwidth at a gain of 1 V/V. The very low trimmed offset voltage of ±130 µV (maximum) comes with a typical (±1σ) drift of ±0.4 µV/°C.

Ideally suited to single-ended, successive-approximation register (SAR) analog-to-digital-converter (ADC) driving applications, the OPA837 provides one of the lowest input spot noise levels at 4.7 nV/√Hz for the 3-mW quiescent power. The very high 50-MHz gain bandwidth product provides the low output impedance to high frequencies required to supply the fast charging currents in SAR ADC driver applications. This low dynamic output impedance is also suitable for reference buffer applications with precision ADCs. The single-channel OPA837 is available in a 6-pin SOT-23 package (that includes a power shutdown feature) and a 5-pin SC70 package.

The OPA837 is characterized for operation over the a wide temperature range of –40°C to +125°C.

Features

  • Bandwidth: 105 MHz (AV = 1 V/V)
  • Very Low (Trimmed) Supply Current: 600 µA
  • Gain Bandwidth Product: 50 MHz
  • Slew Rate: 105 V/µs
  • Negative Rail Input, Rail-to-Rail Output
  • 25°C Input Offset: ±130 µV (Max)
  • Input Offset Voltage Drift (DCK Package):
    < ±1.6 µV/°C (Maximum)
  • Input Voltage Noise: 4.7 nV/√Hz (> 100 Hz)
  • HD2: –120 dBc at 2 VPP, 100 kHz
  • HD3: –145 dBc at 2 VPP, 100 kHz
  • Settling Time: 35 ns, 0.5-V Step to 0.1%
  • 5-µA Shutdown Current With Fast Recovery From
    Shutdown for Power Scaling Applications

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Parametrics Compare all products in High-Speed Op Amps (>=50MHz)

 
Architecture
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Slew Rate (Typ) (V/us)
Vn at Flatband (Typ) (nV/rtHz)
Vn at 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
OPA837 OPA2835 OPA2836 OPA835 OPA836 OPA838
Voltage FB    Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
1    2    2    1    1    1   
2.7    2.5    2.5    2.5    2.5    2.7   
5.4    5.5    5.5    5.5    5.5    5.4   
105    56    205    56    205    90   
1    1    1    1    1    6   
105    160    560    160    560    350   
4.7    9.3    4.6    9.3    4.6    1.8   
4.7    10    4.6    9.3    4.6    1.8   
0.592    0.25    1    0.25    1    0.96   
0.13    0.5    0.4    0.5    0.4    0.125   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
Small Size
Shutdown   
Shutdown    Small Size
Shutdown   
Small Size
Shutdown   
Small Size
Shutdown   
Small Size
Shutdown   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
SC70
SOT-23   
QFN
SOIC
UQFN
VSSOP   
QFN
SOIC
UQFN
VSSOP   
QFN
SOT-23   
QFN
SOT-23   
SC70
SC70
SOT-23   
5SC70: 4 mm2: 2.1 x 2(SC70)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
10QFN: 4 mm2: 2 x 2(QFN)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
10UQFN: 4 mm2: 2 x 2(UQFN)
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
10QFN: 4 mm2: 2 x 2(QFN)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
10UQFN: 4 mm2: 2 x 2(UQFN)
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
10QFN: 4 mm2: 2 x 2(QFN)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
10QFN: 4 mm2: 2 x 2(QFN)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
5SC70: 4 mm2: 2.1 x 2(SC70)
6SC70: 4 mm2: 2.1 x 2(SC70)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
110    113    116    113    116    105   
520000    400000    1000000    400000    1000000    4400000   
0.4    2.25    1.1    2.25    1.1    0.4   
50    30    120    30    120    300   
50    40    50    40    50    20   
120    70    85    70    85    -110   
145    73    79    73    79    -120   
0.1    1    1    1    1    1