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
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.
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
1Vp-p
5MHz
clk
2Vp-p
0.1µF
24Ω
100pF
–5V
402Ω
10MSPS
Analog
Input
12-Bit
10MSPS
ADS804
OPA642
Measured
80dB SFDR
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
NOTE: (1) Packages must be derated based on specified
θ
T
J
must be observed.
JA
. Maximum
PIN CONFIGURATION
Top View
DIP/SO-8
NC
Inverting Input
Non-Inverting Input
–V
S1
1
2
3
4
8
7
6
5
+V
S2(1)
+V
S1
Output
–V
S2(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
formance degradation to complete device failure. Burr-
Brown Corporation recommends that all integrated circuits
be handled and stored using appropriate ESD protection
methods.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet
published specifications.
Output
1
5
+V
S
SOT23-5
–V
S
Non-Inverting Input
2
3
4
Inverting Input
NOTE: (1) Making use of all four power supply pins is recommended,
although not required. Using these four pins, instead of just pins 4 and 7, will
lower the power supply impedance improving distortion.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
(1)
182
182
331
331
006
006
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
PACKAGE
MARKING
(2)
OPA642U
OPA642UB
A42
A42B
OPA642P
OPA642PB
ORDERING
NUMBER
(3)
OPA642U
OPA642UB
OPA642N-250
OPA642N-3k
OPA642NB-250
OPA642NB-3k
OPA642P
OPA642PB
PRODUCT
OPA642U
OPA642UB
OPA642N
OPA642NB
OPA642P
OPA642PB
PACKAGE
SO-8 Surface Mount
SO-8 Surface Mount
5-pin SOT23-5
5-pin SOT23-5
8-Pin Plastic DIP
8-Pin Plastic DIP
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) The “B” grade of the SO-8 and
DIP packages will be marked with a “B” by pin 8. The “B” grade of the SOT23-5 will be marked with a “B” near pins 3 and 4. (3) The SOT23-5 is only available on a 7"
tape and reel (e.g. ordering 250 pieces of “OPA642N-250” will get a single 250 piece tape and reel. Ordering 3000 pieces of “OPA642N-3k” will get a single 3000 piece
tape and reel). Please refer to Appendix B of Burr-Brown IC Data Book for detailed Tape and Reel Mechanical information.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
