OPA2837 Dual, Low-Power, Precision, Rail-to-Rail Output, 105MHz, Voltage Feedback Amplifier | TI.com

OPA2837 (ACTIVE)

Dual, Low-Power, Precision, Rail-to-Rail Output, 105MHz, Voltage Feedback Amplifier

 

Description

The OPA837 and OPA2837 are single- and dual-channel unity-gain stable, voltage-feedback amplifiers that provide among the highest MHz per mW of bandwidth versus power among precision op amps. Using only 600 µA per channel on a single 5-V supply, these 3.0-mW devices deliver 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 OPAx837 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 whereas the dual-channel OPA2837 is available in an 8-pin VSSOP package and a 10-pin WQFN package.

The OPAx837 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
  • Single-Supply Operating Range: 2.7 V to 5.4 V
  • 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 (GBW>=50MHz) Email Download to Excel
Part number Order 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 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (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
OPA2837 Order now Voltage FB     2     2.7     5.4     105     1     105     4.7     4.7     0.592     0.13     In to V-       Catalog     -40 to 125     QFN | 10
VSSOP | 8    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
110     520000     0.4     50     50     120     145     0.1    
OPA2835 Order now Bipolar
Voltage FB    
2     2.5     5.5     56     1     160     9.3     10     0.25     0.5     In to V-
Out    
Shutdown     Catalog     -40 to 125     QFN | 10
SOIC | 8
UQFN | 10
VSSOP | 10    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
10UQFN: 4 mm2: 2 x 2 (UQFN | 10)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
113     400000     2.25     30     40     70     73     1    
OPA2836 Order now Bipolar
Voltage FB    
2     2.5     5.5     205     1     560     4.6     4.6     1     0.4     In to V-
Out    
Small Size
Shutdown    
Catalog     -40 to 125     QFN | 10
SOIC | 8
UQFN | 10
VSSOP | 10    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
10UQFN: 4 mm2: 2 x 2 (UQFN | 10)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
116     1000000     1.1     120     50     85     79