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.
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.