OPA699

OPA699 OPA 699 SBOS261B – NOVEMBER 2002 – REVISED OCTOBER 2003 Wideband, High Gain VOLTAGE LIMITING AMPLIFIER FEATURES q q q q q q q q q HIGH LINEARITY NEAR LIMITING FAST RECOVERY FROM OVERDRIVE: 1ns LIMITING VOLTAGE ACCURACY: ±10mV –3dB BANDWIDTH (G = +6): 260MHz GAIN BANDWIDTH PRODUCT: 1000MHz STABLE FOR G ≥ +4V/V SLEW RATE: 1400V/µs ±5V AND +5V SUPPLY OPERATION LOW GAIN VERSION: OPA698 APPLICATIONS q TRANSIMPEDANCE WITH FAST OVERDRIVE RECOVERY q FAST LIMITING ADC INPUT DRIVER q LOW PROP DELAY COMPARATOR q NONLINEAR ANALOG SIGNAL PROCESSING q DIFFERENCE AMPLIFIER q IF LIMITING AMPLIFIER q OPA689 UPGRADE 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. Nonlinear analog signal processing circuits will benefit from the OPA699 sharp transition from linear operation to output limiting. The quick recovery time supports high-speed applications. The OPA699 is available in an industry-standard pinout in an SO-8 package. For lower gain applications requiring output limiting with fast recovery, consider the OPA698. DESCRIPTION The OPA699 is a wideband, voltage-feedback op amp 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 e...