Catalog
Wide Bandwidth, DC Restoration Circuit
Key Features
• PROPAGATION DELAY: 1.9nsBANDWIDTH:OTA: 710MHzComparator: 730MHzLOW INPUT BIAS CURRENT: ±1µASAMPLE-AND-HOLD SWITCHING TRANSIENTS: ±5mVSAMPLE-AND-HOLD FEEDTHROUGH REJECTION: 100dBCHARGE INJECTION: 40fCHOLD COMMAND DELAY TIME: 2.5nsTTL/CMOS HOLD CONTROLAPPLICATIONSBROADCAST/HDTV EQUIPMENTTELECOMMUNICATIONS EQUIPMENTHIGH-SPEED DATA ACQUISITIONCAD MONITORS/CCD IMAGE PROCESSINGNANOSECOND PULSE INTEGRATOR/PEAK DETECTORPULSE CODE MODULATOR/DEMODULATORCOMPLETE VIDEO DC LEVEL RESTORATIONSAMPLE-AND-HOLD AMPLIFIERSHC615 UPGRADEAll trademarks are the property of their respective owners.PROPAGATION DELAY: 1.9nsBANDWIDTH:OTA: 710MHzComparator: 730MHzLOW INPUT BIAS CURRENT: ±1µASAMPLE-AND-HOLD SWITCHING TRANSIENTS: ±5mVSAMPLE-AND-HOLD FEEDTHROUGH REJECTION: 100dBCHARGE INJECTION: 40fCHOLD COMMAND DELAY TIME: 2.5nsTTL/CMOS HOLD CONTROLAPPLICATIONSBROADCAST/HDTV EQUIPMENTTELECOMMUNICATIONS EQUIPMENTHIGH-SPEED DATA ACQUISITIONCAD MONITORS/CCD IMAGE PROCESSINGNANOSECOND PULSE INTEGRATOR/PEAK DETECTORPULSE CODE MODULATOR/DEMODULATORCOMPLETE VIDEO DC LEVEL RESTORATIONSAMPLE-AND-HOLD AMPLIFIERSHC615 UPGRADEAll trademarks are the property of their respective owners.
Description
AI
The OPA615 is a complete subsystem for very fast and precise DC restoration, offset clamping, and low-frequency hum suppression of wideband amplifiers or buffers. Although it is designed to stabilize the performance of video signals, the circuit can also be used as a sample-and-hold amplifier, high-speed integrator, or peak detector for nanosecond pulses. The device features a wideband Operational Transconductance Amplifier (OTA) with a high-impedance cascode current source output and fast and precise sampling comparator that together set a new standard for high-speed applications. Both the OTA and the sampling comparator can be used as stand-alone circuits or combined to form a more complex signal processing stage. The self-biased, bipolar OTA can be viewed as an ideal voltage-controlled current source and is optimized for low input bias current. The sampling comparator has two identical high-impedance inputs and a current source output optimized for low output bias current and offset voltage; it can be controlled by a TTL-compatible switching stage within a few nanoseconds. The transconductance of the OTA and sampling comparator can be adjusted by an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized.
The OPA615 is available in both an SO-14 surface-mount and an MSOP-10 package.
The OPA615 is a complete subsystem for very fast and precise DC restoration, offset clamping, and low-frequency hum suppression of wideband amplifiers or buffers. Although it is designed to stabilize the performance of video signals, the circuit can also be used as a sample-and-hold amplifier, high-speed integrator, or peak detector for nanosecond pulses. The device features a wideband Operational Transconductance Amplifier (OTA) with a high-impedance cascode current source output and fast and precise sampling comparator that together set a new standard for high-speed applications. Both the OTA and the sampling comparator can be used as stand-alone circuits or combined to form a more complex signal processing stage. The self-biased, bipolar OTA can be viewed as an ideal voltage-controlled current source and is optimized for low input bias current. The sampling comparator has two identical high-impedance inputs and a current source output optimized for low output bias current and offset voltage; it can be controlled by a TTL-compatible switching stage within a few nanoseconds. The transconductance of the OTA and sampling comparator can be adjusted by an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized.
The OPA615 is available in both an SO-14 surface-mount and an MSOP-10 package.
