OPA689M Series

Military wideband, high gain voltage limiting amplifier

Catalog

Military wideband, high gain voltage limiting amplifier

Part	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Number of Circuits	Mounting Type	Voltage - Supply Span (Max) [Max]	Current - Input Bias	Voltage - Input Offset	-3db Bandwidth	Gain Bandwidth Product	Voltage - Supply Span (Min) [Min]	Slew Rate	Current - Supply	Current - Output / Channel
Texas Instruments OPA689MJD	Single-Ended	125 °C	-55 °C	1	Through Hole	12 V	8 µA	1 mV	260 MHz	720 MHz	10 V	1400 V/µs	15.8 mA	105 mA

Catalog

Military wideband, high gain voltage limiting amplifier

Key Features

• High Linearity Near LimitingFast Recovery From Overdrive: 2.4 nsLimiting Voltage Accuracy: ±15 mV-3-dB Bandwidth (G = 6): 260 MHzStable for G ≥ 4Slew Rate: 1400 V/µs±5-V and 5-V Supply OperationHigh-Gain Version of OPA688APPLICATIONSTransimpedance With Fast Overdrive RecoveryFast Limiting ADC Input BuffersLow Propagation Delay ComparatorNon-Linear Analog Signal ProcessingDifference AmplifierIF Limiting AmplifierAM Signal GenerationHigh Linearity Near LimitingFast Recovery From Overdrive: 2.4 nsLimiting Voltage Accuracy: ±15 mV-3-dB Bandwidth (G = 6): 260 MHzStable for G ≥ 4Slew Rate: 1400 V/µs±5-V and 5-V Supply OperationHigh-Gain Version of OPA688APPLICATIONSTransimpedance With Fast Overdrive RecoveryFast Limiting ADC Input BuffersLow Propagation Delay ComparatorNon-Linear Analog Signal ProcessingDifference AmplifierIF Limiting AmplifierAM Signal Generation

Description

The OPA689 is a wideband, voltage-feedback operational amplifier that offers bipolar output voltage limiting, and is stable for gains ≥4. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±15 mV. The operational amplifier operates linearly to within 30 mV of the limits. The combination of narrow nonlinear range and low limiting offset allows the limiting voltages to be set within 100 mV of the desired linear output range. A fast 2.4-ns recovery from limiting ensures that overdrive signals are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA689 to be used in all standard operational amplifier applications. Nonlinear analog signal processing circuits benefit from the OPA689's sharp transition from linear operation to output limiting. The quick recovery time supports high-speed applications. The OPA689M is available in an industry-standard pinout in a CDIP-8 package. For lower gain applications requiring output limiting with fast recovery, consider the OPA688M. The OPA689 is a wideband, voltage-feedback operational amplifier that offers bipolar output voltage limiting, and is stable for gains ≥4. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±15 mV. The operational amplifier operates linearly to within 30 mV of the limits. The combination of narrow nonlinear range and low limiting offset allows the limiting voltages to be set within 100 mV of the desired linear output range. A fast 2.4-ns recovery from limiting ensures that overdrive signals are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA689 to be used in all standard operational amplifier applications. Nonlinear analog signal processing circuits benefit from the OPA689's sharp transition from linear operation to output limiting. The quick recovery time supports high-speed applications. The OPA689M is available in an industry-standard pinout in a CDIP-8 package. For lower gain applications requiring output limiting with fast recovery, consider the OPA688M.