FEATURES

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

TRANSIMPEDANCE WITH FAST

OVERDRIVE RECOVERY

FAST LIMITING ADC INPUT DRIVER

LOW PROP DELAY COMPARATOR

NONLINEAR ANALOG SIGNAL

PROCESSING

DIFFERENCE AMPLIFIER

IF LIMITING AMPLIFIER

OPA689 UPGRADE

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 error to

±10mV. The op amp operates linearly to within 20mV of the

limits.

The combination of narrow nonlinear range and low limiting

offset allows the limiting voltages to be set within 100mV of

the desired linear output range. A fast 1ns 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.

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.