®
OPA642
OPA642
OPA658
OPA642
Wideband, Low Distortion, Low Gain
OPERATIONAL AMPLIFIER
FEATURES
APPLICATIONS
● LOW DISTORTION: –95dBc at 5MHz
● GAIN OF +1 BANDWIDTH: 400MHz
● AVAILABLE IN SOT23-5 PACKAGE
● HIGH OPEN LOOP GAIN: 95dB
● HIGH COMMON-MODE REJECTION: 90dB
● FAST 12-BIT SETTLING: 13ns (0.01%)
● LOW NOISE: 2.7nV/√Hz
● ADC/DAC BUFFER AMPLIFIER
● LOW DISTORTION IF AMPLIFIER
● HIGH RESOLUTION IMAGING
● MEDICAL IMAGING
● LOW NOISE PREAMPLIFIER
● HIGH CMR DIFFERENCING AMPLIFIER
● TEST INSTRUMENTATION
● PROFESSIONAL AUDIO
● HIGH OUTPUT CURRENT: ±60mA
● VERY LOW DIFF GAIN/PHASE ERROR:
0.007%/0.008°
feedback op amps. Fast settling time, excellent differ-
ential gain/phase performance, low voltage noise and
high output current drive make the OPA642 ideal for
most high dynamic range applications.
DESCRIPTION
The OPA642 provides a level of speed and dynamic
range previously unattainable in a monolithic op amp.
Using a unity gain stable voltage feedback architec-
ture with two internal gain stages, the OPA642 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
Unity gain stability makes the OPA642 particularly
suitable for low gain differential amplifiers,
transimpedance amplifiers, gain of +2 video line driv-
ers, wideband integrators and low distortion ADC buff-
ers. Where higher gain or even lower harmonic distor-
tion is required, consider the OPA643—a higher gain-
bandwidth and lower noise version of the OPA642
+5V
5kΩ
REFT
0.1µF
+5V
clk
ADS804
10MSPS
1Vp-p
5MHz
0.1µF
24Ω
2Vp-p
Analog
Measured
80dB SFDR
12-Bit
Input
OPA642
10MSPS
100pF
–5V
402Ω
5kΩ
REFB
0.1µF
402Ω
High Dynamic Range 10MSPS Digitizer
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
®
©
1
PDS-1190F
PrinOtedPinAU.S6.A4. F2ebruary, 1998
1993 Burr-Brown Corporation