FEATURES
· High Linearity Near Limiting
· Fast Recovery from Overdrive: 1 ns
· Limiting Voltage Accuracy: ±15 mV
· –3-dB Bandwidth (G = +6): 260 MHz
· Stable for G ³ +4
· Slew Rate: 1400 V/μs
· ±5-V and 5-V Supply Operation
· High Gain Version of the OPA698
· Low Prop Delay Comparator
· Non-Linear Analog Signal Processing
· Difference Amplifier
· IF Limiting Amplifier
· OPA689M Replacement

APPLICATIONS
· Transimpedance With Fast Overdrive
Recovery
· Fast Limiting ADC Input Buffers

DESCRIPTION
The OPA699 is a wideband, voltage feedback op amp that offers bipolar output voltage limiting, and is stable for
gains ³ +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 op amp 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 1-ns recovery from limiting ensures that overdrive signals will be
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 OPA699 to be used in all standard op amp
applications.
Non-linear analog signal processing circuits will benefit from the ability of the OPA699 to sharply transition from
linear operation to output limiting. The quick recovery time supports high speed applications.
The OPA699M is available in an industry-standard pinout in a CDIP-8 package. For lower gain applications
requiring output limiting with fast recovery, consider the OPA698M.