The OPA640 is internally compensated for unity-gain
stability. This amplifier has a fully symmetrical differ-
ential input due to its “classical” operational amplifier
circuit architecture. This allows the OPA640 to be used
in all op amp applications requiring high speed and
precision.
Low noise, wide bandwidth, and high linearity make
this amplifier suitable for a variety of RF and video
applications.
+V
S
7, 8
Non-Inverting
Input
Inverting
Input
3
Output
Stage
2
Current
Mirror
C
C
6
V
OUT
4, 5
–V
S
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) Making use of all four power supply pins is highly recommended,
although not required. Using these four pins, instead of just pins 4 and 7, will
lower the effective pin impedance and substantially lower distortion.
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.
PACKAGE/ORDERING INFORMATION
PRODUCT
OPA640P
OPA640U, UB
PACKAGE
8-Pin Plastic DIP
SO-8 Surface Mount
PACKAGE DRAWING
NUMBER
(1)
006
182
NOTE: (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 package will be marked with a “B” by pin 8.
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.
®
3
OPA640
TYPICAL PERFORMANCE CURVES
T
A
= +25°C, V
S
=
±5V,
R
L
= 100Ω, C
L
= 2pF, R
FB
= 402Ω and all four power supply pins are used, unless otherwise noted. R
FB
= 25Ω for a gain of +1.
90
A
OL
, PSR, AND CMR vs TEMPERATURE
CMR
Common-Mode Rejection (dB)
COMMON-MODE REJECTION
vs INPUT COMMON-MODE VOLTAGE
90
+PSR
A
OL
, PSR, CMR (dB)
80
85
70
–PSR
60
A
OL
50
–75
80
75
70
–50
–25
0
25
50
75
100
125
–5
–4
–3
–2
–1
0
1
2
3
4
5
Temperature (°C)
Common-Mode Voltage (V)
INPUT BIAS CURRENT vs TEMPERATURE
26
20
SUPPLY CURRENT vs TEMPERATURE
Input Bias Current (µA)
18
Supply Current (±mA)
22
19
18
14
17
10
–75
–50
–25
0
25
50
75
100
125
16
–75
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
Ambient Temperature (°C)
OUTPUT CURRENT vs TEMPERATURE
70
30
25
60
–I
O
Voltage Noise (nV/√Hz)
Output Current (±mA)
VOLTAGE NOISE vs FREQUENCY
20
15
10
5
+I
O
50
40
–60
0
–40
–20
0
20
40
60
80
100
120
140
10
100
1k
10k
100k
1M
10M
Ambient Temperature (°C)
Frequency (Hz)
®
OPA640
4
TYPICAL PERFORMANCE CURVES
RECOMMENDED ISOLATION RESISTANCE
vs CAPACITIVE LOAD FOR G = +1
40
(CONT)
T
A
= +25°C, V
S
=
±5V,
R
L
= 100Ω, C
L
= 2pF, R
FB
= 402Ω and all four power supply pins are used, unless otherwise noted. R
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