OPA699M
www.ti.com
SGLS289A–MAY 2005–REVISED MARCH 2006
GAIN +4 STABLE WIDEBAND VOLTAGE LIMITING AMPLIFIER
FEATURES
APPLICATIONS
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Transimpedance With Fast Overdrive
Recovery
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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 ≥ +4
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Fast Limiting ADC Input Buffers
JD PACKAGE
(TOP VIEW)
Slew Rate: 1400 V/µs
NC
INVERTING INPUT
V
H
1
2
3
4
8
7
6
5
±5-V and 5-V Supply Operation
High Gain Version of the OPA698
Low Prop Delay Comparator
Non-Linear Analog Signal Processing
Difference Amplifier
+V
S
NONINVERTING INPUT
OUTPUT
V
-V
L
S
NC - No internal connection
P0013-01
IF Limiting Amplifier
OPA689M Replacement
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 ±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.
ORDERING INFORMATION(1)
TA
PACKAGE
CDIP – JD Tube
ORDERABLE PART NUMBER
TOP-SIDE MARKING
-55°C to 125°C
OPA699MJD
OPA699MJD
(1) 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.
Copyright © 2005–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.