OPA688M Datasheet, PDF (1/23 Pages) Texas Instruments – UNITY-GAIN-STABLE WIDEBAND VOLTAGE LIMITING AMP LIFIER

features
D High Linearity Near Limiting
D Fast Recovery from Overdrive: 2.4 ns
D IiMiting Voltage Accuracy: ±15 mV
D −3dB Bandwidth (G = +1): 450 MHz
D Slew Rate: 1000 V/µs
D ±5-V and 5-V Supply Operation
D Unity Gain Version of the OPA689
applications
D Fast Limiting ADC Input Buffers
D CCD Pixel Clock Stripping
D Video Sync Stripping
D HF Mixers
OPA688M
UNITYĆGAINĆSTABLE WIDEBAND
VOLTAGE LIMITING AMPLIFIER
SGLS144B − APRIL 2003 − DECEMBER 2006
D IF Limiting Amplifiers
D AM Signal Generation
D Non−Linear Analog Signal Processing
D High Speed Comparators
JD PACKAGE
(TOP VIEW)
NC 1
INVERTING INPUT 2
NON-INVERTING INPUT 3
−VCC 4
8 V_H
7 +VCC
6 OUTPUT
5 VL
NC - No internal connection
description
The OPA688 is a wideband, unity gain stable voltage-feedback op amp that offers bipolar output voltage limiting.
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 output limit voltages.
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. A fast 2.4-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 OPA688 to be used in all standard op
amp applications.
Non-linear analog signal processing will benefit from the OPA688s sharp transition from linear operation to
output limiting. The quick recovery time supports high-speed applications.
The OPA688M is available in an industry standard pinout CDIP-8 package. For higher gain, or transimpedance
applications requiring output limiting with fast recovery, consider the OPA689M.
ORDERING INFORMATION^†
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−55°C to 125°C CDIP - JD
Tube
OPA688MJD
OPA688MJD
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design}
guidelines are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2006, Texas Instruments Incorporated
1