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®
OPA621
Wideband Precision
OPERATIONAL AMPLIFIER
FEATURES
q
LOW NOISE: 2.3nV/√Hz
q
LOW DIFFERENTIAL GAIN/PHASE ERROR
q
HIGH OUTPUT CURRENT: 150mA
q
FAST SETTLING: 25ns (0.01%)
q
GAIN-BANDWIDTH: 500MHz
q
STABLE IN GAINS:
≥
2V/V
q
LOW OFFSET VOLTAGE:
±
100
µ
V
q
SLEW RATE: 500V/
µ
s
q
8-PIN DIP, SOIC PACKAGES
APPLICATIONS
q
LOW NOISE PREAMPLIFIER
q
LOW NOISE DIFFERENTIAL AMPLIFIER
q
HIGH-RESOLUTION VIDEO
q
LINE DRIVER
q
HIGH-SPEED SIGNAL PROCESSING
q
ADC/DAC BUFFER
q
ULTRASOUND
q
PULSE/RF AMPLIFIERS
q
ACTIVE FILTERS
DESCRIPTION
The OPA621 is a precision wideband monolithic opera-
tional amplifier featuring very fast settling time, low
differential gain and phase error, and high output
current drive capability.
The OPA621 is stable in gains of
±2V/V
or higher. This
amplifier has a very low offset, fully symmetrical
differential input due to its “classical” operational am-
plifier circuit architecture. Unlike “current-feedback”
amplifier designs, the OPA621 may be used in all op
amp applications requiring high speed and precision.
Low noise and distortion, wide bandwidth, and high
linearity make this amplifier suitable for RF and video
applications. Short circuit protection is provided by an
internal current-limiting circuit.
The OPA621 is available in DIP and SO-8 packages.
+V
CC
7
Non-Inverting
Input
Inverting
Input
3
Output
Stage
Current
Mirror
6 Output
2
4
–V
CC
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
©
1989 Burr-Brown Corporation
PDS-939F
Printed in U.S.A. June, 1997
SBOS164
SPECIFICATIONS
ELECTRICAL
At V
CC
=
±5VDC,
R
L
= 100Ω, and T
A
= +25°C, unless otherwise noted.
OPA621KP, KU
PARAMETER
INPUT NOISE
Voltage: f
O
= 100Hz
f
O
= 1kHz
f
O
= 10kHz
f
O
= 100kHz
f
O
= 1MHz to 100MHz
f
B
= 100Hz to 10MHz
Current: f
O
= 10kHz to 100MHz
OFFSET VOLTAGE
(1)
Input Offset Voltage
Average Drift
Supply Rejection
BIAS CURRENT
Input Bias Current
OFFSET CURRENT
Input Offset Current
INPUT IMPEDANCE
Differential
Common-Mode
INPUT VOLTAGE RANGE
Common-Mode Input Range
Common-Mode Rejection
OPEN-LOOP GAIN, DC
Open-Loop Voltage Gain
FREQUENCY RESPONSE
Closed-Loop Bandwidth
(–3dB)
CONDITIONS
R
S
= 0Ω
MIN
TYP
10
5.5
3.3
2.5
2.3
8.0
2.3
±200
±12
60
18
0.2
15 || 1
1 || 1
±3.0
65
50
48
±3.5
75
60
58
±1mV
MAX
UNITS
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
µV,
rms
pA/√Hz
µV
µV/°C
dB
µA
µA
kΩ || pF
MΩ || pF
V
dB
dB
dB
V
CM
= 0VDC
T
A
= T
MIN
to T
MAX
±V
CC
= 4.5V to 5.5V
V
CM
= 0VDC
V
CM
= 0VDC
Open-Loop
50
30
2
V
IN
=
±2.5VDC,
V
O
= 0VDC
R
L
= 100Ω
R
L
= 50Ω
Gain-Bandwidth Product
Differential Gain
Differential Phase
Harmonic Distortion
Full Power Bandwidth
Slew Rate
Overshoot
Settling Time: 0.1%
0.01%
Phase Margin
Rise Time
Gain = +2V/V
Gain = +5V/V
Gain = +10V/V
Gain
≥
+10V/V
3.58MHz, G = +2V/V
3.58MHz, G = +2V/V
G = +2V/V, f = 10MHz, V
O
= 2Vp-p
f = 10MHz, Second Harmonic
Third Harmonic
V
O
= 5Vp-p, Gain = +2V/V
V
O
= 2Vp-p, Gain = +2V/V
2V Step, Gain = –2V/V
2V Step, Gain = –2V/V
2V Step, Gain = –2V/V
Gain = +2V/V
Gain = +2V/V, 10% to 90%
V
O
= 100mVp-p; Small Signal
V
O
= 6Vp-p; Large Signal
R
L
= 100Ω
R
L
= 50Ω
1MHz, Gain = +2V/V
Gain = +2V/V
Continuous
±V
CC
±V
CC
I
O
= 0mA
Ambient Temperature
500
100
50
500
0.05
0.05
–62
–80
32
80
500
15
15
25
50
1.8
8
±3.0
±2.5
±3.5
±3.0
0.015
15
±150
5
4.0
26
–40
–40
100
125
6.0
28
+85
+85
–50
–70
MHz
MHz
MHz
MHz
%
Degrees
dBc
(3)
dBc
MHz
MHz
V/µs
%
ns
ns
Degrees
ns
ns
V
V
Ω
pF
mA
VDC
VDC
mA
°C
°C
°C/W
°C/W
22
55
350
RATED OUTPUT
Voltage Output
Output Resistance
Load Capacitance Stability
Short Circuit Current
POWER SUPPLY
Rated Voltage
Derated Performance
Current, Quiescent
TEMPERATURE RANGE
Specification: KP, KU
Operating: KP, KU
θ
JA
KP
KU
®
OPA621
2
SPECIFICATIONS (
CONT
)
ELECTRICAL (FULL TEMPERATURE RANGE SPECIFICATIONS)
At V
CC
=
±5VDC,
R
L
= 100Ω, and T
A
= T
MIN
to T
MAX
, unless otherwise noted.
OPA621KP, KU
PARAMETER
TEMPERATURE RANGE
Specification: KP, KU
OFFSET VOLTAGE
(1)
Average Drift
Supply Rejection
BIAS CURRENT
Input Bias Current
OFFSET CURRENT
Input Offset Current
INPUT VOLTAGE RANGE
Common-Mode Input Range
Common-Mode Rejection
OPEN LOOP GAIN, DC
Open-Loop Voltage Gain
RATED OUTPUT
Voltage Output
POWER SUPPLY
Current, Quiescent
CONDITIONS
Ambient Temperature
Full Temperature Range
±V
CC
= 4.5V to 5.5V
Full Temperature, V
CM
= 0VDC
Full Temperature, V
CM
= 0VDC
±2.5
60
46
44
±3.0
±2.5
MIN
–40
±12
60
18
0.2
±3.0
75
60
58
±3.5
±3.0
26
30
40
5
TYP
MAX
+85
UNITS
°C
µV/°C
dB
µA
µA
V
dB
dB
dB
V
V
mA
45
V
IN
=
±2.5VDC,
V
O
= 0VDC
R
L
= 100Ω
R
L
= 50Ω
R
L
= 100Ω
R
L
= 50Ω
I
O
= 0mA
NOTES: (1) Offset Voltage specifications are also guaranteed with units fully warmed up. (2) Parameter is guaranteed by characterization. (3) dBc = dB referred
to carrier-input signal.
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
OPA621
PIN CONFIGURATION
Top View
DIP/SO-8
No Internal Connection
Inverting Input
Non-Inverting Input
Negative Supply (–V
CC
)
1
2
3
4
8
7
6
5
No Internal Connection
Positive Supply (+V
CC
)
Output
No Internal Connection
ORDERING INFORMATION
OPA621 (
Basic Model Number
Performance Grade Code
K = –40°C to +85°C
Package Code
P = 8-pin Plastic DIP
U = 8-pin Plastic SO-8
) (
)
ABSOLUTE MAXIMUM RATINGS
Supply .............................................................................................
±7VDC
Internal Power Dissipation
(1)
.......................... See Applications Information
Differential Input Voltage ............................................................. Total V
CC
Input Voltage Range .................................... See Applications Information
Storage Temperature Range KP, KU: ............................ –40°C to +125°C
Lead Temperature (soldering, 10s) ............................................... +300°C
(soldering, SO-8 3s) ........................................ +260°C
Output Short Circuit to Ground (+25°C) .................. Continuous to Ground
Junction Temperature (T
J
) ............................................................ +175°C
NOTE: (1) Packages must be derated based on specified
θ
JA
. Maximum T
J
must
be observed.
PACKAGE INFORMATION
PRODUCT
OPA621KP
OPA621KU
PACKAGE
8-Pin Plastic DIP
8-Pin SO-8
PACKAGE DRAWING
NUMBER
(1)
006
182
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
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 its published
specifications.
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
®
OPA621
4
