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OPA643 Fiches technique(PDF) 1 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
No de pièce OPA643
Description  Wideband Low Distortion, High Gain OPERATIONAL AMPLIFIER
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Fabricant  BURR-BROWN [Burr-Brown (TI)]
Site Internet  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

OPA643 Fiches technique(HTML) 1 Page - Burr-Brown (TI)

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®
OPA643
1
Wideband Low Distortion, High Gain
OPERATIONAL AMPLIFIER
®
OPA643
APPLICATIONS
q BASE STATION ADC PREAMP
q ADC/DAC BUFFER AMPLIFIER
q LOW DISTORTION IF AMPLIFIER
q LOW NOISE, BROADBAND,
TRANSIMPEDANCE AMPLIFIER
q LOW NOISE PREAMPLIFIER
q VIDEO AMPLIFICATION
q TEST INSTRUMENTATION
OPA643
OPA658
OPA643
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
FEATURES
q LOW DISTORTION: –90dBc at 5MHz
q LOW NOISE: 2.3nV/
√Hz
q GAIN-BANDWIDTH PRODUCT: 800MHz
q AVAILABLE IN SOT23-5 PACKAGE
q STABLE IN GAINS
3
q HIGH SLEW RATE: 1000V/
µs
q HIGH OPEN-LOOP GAIN: 95dB
q HIGH OUTPUT CURRENT:
±60mA
DESCRIPTION
The OPA643 provides a level of speed and dynamic
range previously unattainable in a monolithic op amp.
Using a de-compensated voltage feedback architec-
ture with two internal gain stages, the OPA643 achieves
exceptionally low harmonic distortion over a wide
frequency range. The "classic" differential input pro-
vides all the familiar benefits of precision op amps,
such as bias current cancellation and very low invert-
ing current noise compared with wideband current
feedback op amps. High slew rate and open-loop gain,
along with low input noise and high output current
drive make the OPA643 ideal for very high dynamic
range requirements.
The high gain bandwidth product for the gain
≥ 3
stable OPA643 makes it particularly suitable for
wideband transimpedance amplifiers and moderate gain
IF amplifier applications. External compensation
techniques may be used to apply the OPA643 at low
gains giving exceptionally low distortion and frequency
response flatness. Where unity gain stability with
comparable distortion performance is required, consider
the OPA642.
806
50
1Vp-p
10MHz
OPA643
47pF
REFT
+5V
REFB
ADS805
12-Bit
20MSPS
Measured
80dB SFDR
Analog
Input
56.9
0.1µF
0.1µF
402
5k
High Dynamic Range 20MSPS Digitizer
5k
0.1µF
2Vp-p
+5V
–5V
14pF
280
0.1µF
Low Gain
Compensation
50
Source
2.7pF
©1993 Burr-Brown Corporation
PDS-1191D
Printed in U.S.A. March, 1998


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