AD8037SRZ-EP

The AD8037-EP is a wide bandwidth, low distortion clamping amplifier. The AD8037-EP is stable at a gain of two or greater. This device allows the designer to specify a high (ΔVCH) and low (VCL) output clamp voltage. The output signal clamps at these specified levels. Utilizing a unique patent pending CLAMPING™ input clamp architecture, the AD8037-EP offers a 10× improvement in clamp performance compared to traditional output clamping devices. In particular, clamp error is typically 3 mV or less and distortion in the clamp region is minimized. This product can be used as a classical op amp or clamp amplifier. The AD8037-EP, which utilizes a voltage feedback architecture, meets the requirement of many applications which previously depended on current feedback amplifiers. The AD8037-EP exhibits an exceptionally fast and accurate pulse response (16 ns to 0.01%), extremely wide small-signal and large-signal bandwidths and ultralow distortion. The AD8037-EP recovers from 2× clamp overdrive within 1.5 ns. These characteristics position the AD8037-EP ideally for driving as well as buffering flash and high resolution ADCs. In addition to traditional output clamp amplifier applications, the input clamp architecture supports the clamp levels as additional input to the amplifier. As such, in addition to static dc clamp levels, signals with speeds up to 240 MHz can be applied to the clamp pins. The clamp values can be set to any value within the output voltage range provided that VH is greater than VL. Due to these clamp characteristics, the AD8037-EP can be used in nontraditional applications such as a full wave rectifier, a pulse generator, or an amplitude modulator. These novel applications are only examples of some of the diverse applications which can be designed with input clamps.

Applications

• ADC buffer
• IF/RF signal processing
• High quality imaging
• Broadcast video systems
• Video amplifier
• Full wave rectifier

Key features

• Superb clamping characteristics
• 3 mV clamp error
• 1.5 ns overdrive recovery
• Minimized nonlinear clamping region
• 240 MHz clamp input bandwidth
• ±3.9 V clamp input range
• Wide bandwidth
• Small signal: 270 MHz
• Large signal (4 V p-p): 190 MHz
• Good dc characteristics
• 2 mV offset
• 10 μV/°C drift
• Ultralow distortion, low noise
• −72 dBc typical at 20 MHz
• 4.5 nV/√Hz input voltage noise
• High speed
• Slew rate 1500 V/μs
• Settling 10 ns to 0.1%, 16 ns to 0.07%
• ±3 V to ±5 V supply operation
• Extended industrial temperature range: -55°C to +105°C
• Controlled manufacturing baseline
• One assembly/test site
• One fabrication site
• Product change notification
• Qualification data available on request