®
OPA
465
0
OPA4650
DEMO BOARD
AVAILABLE
OPA
465
0
Wideband, Low Power, Quad Voltage Feedback
OPERATIONAL AMPLIFIER
FEATURES
q
LOW POWER: 50mW/channel
q
UNITY GAIN STABLE BANDWIDTH:
360MHz
q
FAST SETTLING TIME: 20ns to 0.01%
q
LOW INPUT BIAS CURRENT: 5
µ
A
q
DIFFERENTIAL GAIN/PHASE ERROR:
0.01%/0.025
°
q
14-PIN DIP and SO-14 SURFACE MOUNT
PACKAGES AVAILABLE
DESCRIPTION
The OPA4650 is a quad, low power, wideband voltage
feedback operational amplifier. It features a high band-
width of 360MHz as well as a 12-bit settling time of
only 20ns. The low input bias current allows its use in
high speed integrator applications, while the wide
bandwidth and true differential input stage make it
suitable for use in a variety of active filter applica-
tions. Its low distortion gives exceptional performance
for telecommunications, medical imaging and video
applications.
The OPA4650 is internally compensated for unity-
gain stability. This amplifier has a fully symmetrical
differential input due to its “classical” operational
amplifier circuit architecture. Its unusual combination
of speed, accuracy and low power make it an outstand-
ing choice for many portable, multi-channel and other
high speed applications, where power is at a premium.
The OPA4650 is also available in single (OPA650)
and dual (OPA2650) configurations.
+V
S
APPLICATIONS
q
HIGH RESOLUTION VIDEO
q
MONITOR PREAMPLIFIER
q
CCD IMAGING AMPLIFIER
q
ULTRASOUND SIGNAL PROCESSING
q
ADC/DAC BUFFER AMPLIFIER
q
ACTIVE FILTERS
q
HIGH SPEED INTEGRATORS
q
DIFFERENTIAL AMPLIFIER
Non-Inverting
Input
Output
Stage
Inverting
Input
Current
Mirror
C
C
Output
–V
S
Simplified Schematic
1 of 4 Channels
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
© 1994 Burr-Brown Corporation
PDS-1267B
Printed in U.S.A. July, 1995
SPECIFICATIONS
At T
A
= +25°C, V
S
=
±5V,
R
L
= 100Ω, and R
FB
= 402Ω, unless otherwise noted. R
FB
= 25Ω for a gain of +1.
OPA4650P, U
PARAMETER
FREQUENCY RESPONSE
Closed-Loop Bandwidth
(1)
CONDITIONS
G = +1
G = +2
G = +5
G = +10
G = +1, 2V Step
0.2V Step
0.2V Step
G = +1, 2V Step
G = +1, 2V Step
G = +1, 2V Step
G = +1, f = 5.0 MHz, V
O
= 2Vp-p
R
L
= 100Ω
R
L
= 402Ω
G = +2, NTSC, V
O
= 1.4Vp, R
L
= 150Ω
G = +2, NTSC, V
O
= 1.4Vp, R
L
= 150Ω
G = +2
Input Referred, 5MHz, all hostile
Input Referred, 5MHz, Channel-to-Channel
MIN
TYP
360
120
35
16
160
240
220
1
1
20
10.3
7.9
68
74
0.01
0.025
21
–63
–66
±1
±3
76
52
5
0.5
±5.5
MAX
UNITS
MHz
MHz
MHz
MHz
MHz
V/µs
V/µs
ns
ns
ns
ns
ns
dBc
dBc
%
Degrees
MHz
dB
dB
mV
µV/°C
dB
dB
µA
µA
µA
µA
Gain Bandwidth Product
Slew Rate
(2)
Over Specified Temperature
Rise Time
Fall Time
Settling Time
0.01%
0.1%
1%
Spurious Free Dynamic Range
Differential Gain
Differential Phase
Bandwidth for 0.1dB Flatness
Crosstalk
OFFSET VOLTAGE
Input Offset Voltage
Average Drift
Power Supply Rejection (+V
S
)
(–V
S
)
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
Over Temperature
INPUT NOISE
Input Voltage Noise
Noise Density, f = 100Hz
f = 10kHz
f = 1MHz
f = 1MHz to 100MHz
Integrated Noise, BW = 10Hz to 100MHz
Input Bias Current Noise
Current Noise Density, f = 0.1MHz to 100MHz
Noise Figure (NF)
|V
S
| = 4.5V to 5.5V
60
47
V
CM
= 0V
V
CM
= 0V
20
30
1.0
3.0
43
9.4
8.4
8.4
84
1.2
R
S
= 10kΩ
R
S
= 50Ω
4.0
19.5
±2.8
90
15 || 1
16 || 1
V
O
=
±2V,
R
L
= 100Ω
V
O
=
±2V,
R
L
= 100Ω
45
43
51
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
µVp-p
pA/√Hz
dBm
dBm
V
V
dB
kΩ || pF
MΩ || pF
dB
dB
INPUT VOLTAGE RANGE
Common-Mode Input Range
Over Specified Temperature
Common-Mode Rejection
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over Specified Temperature
OUTPUT
Voltage Output
Over Specified Temperature
V
CM
=
±0.5V
±2.2
65
No Load
R
L
= 250Ω
R
L
= 100Ω
Output Current, Sourcing
Over Temperature Range
Output Current, Sinking
Over Temperature Range
Short-Circuit Current
Output Resistance
POWER SUPPLY
Specified Operating Voltage
Operating Voltage Range
Quiescent Current
Over Specified Temperature
TEMPERATURE RANGE
Specification: P, U
Thermal Resistance,
θ
JA
P
U
±2.2
±2.2
±2.0
75
65
65
35
±3.0
±2.5
±2.3
110
85
150
0.08
±5
±23
0.1MHz, G = +1
V
V
V
mA
mA
mA
mA
mA
Ω
V
V
mA
mA
°C
°C/W
°C/W
±4.5
All Channels
±5.5
±32
±35
+85
–40
75
75
NOTES: (1) Frequency response can be strongly influenced by PC board parasites. The OPA4650 is nominally compensated assuming 2pF parasitic load. The
demonstration board, DEM-OPA465xP, shows a low parasitic layout for this part. (2) Slew rate is rate of change from 10% to 90% of output voltage step.
®
OPA4650
2
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage Across Device ................................................... 11V
Internal Power Dissipation ........................... See Thermal Considerations
Differential Input Voltage ..................................................................
±2.7V
Common-Mode Input Voltage Range ..................................................
±V
S
Storage Temperature Range: P, U, .............................. –40°C to +125°C
Lead Temperature (soldering, 10s) .............................................. +300°C
(soldering, SOIC 3s) ....................................... +260°C
Junction Temperature (T
J
) ............................................................ +175°C
PACKAGE INFORMATION
PRODUCT
OPA4650U
OPA4650P
PACKAGE
SO-14 Surface Mount
14-Pin Plastic DIP
PACKAGE DRAWING
NUMBER
(1)
235
010
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ORDERING INFORMATION
PIN CONFIGURATION
Top View
Output 1
–Input 1
+Input 1
+V
S
+Input 2
–Input 2
Output 2
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PRODUCT
DIP/SO-14
Output 4
–Input 4
+Input 4
–V
S
+Input 3
–Input 3
Output 3
PACKAGE
SO-14 Surface Mount
14-Pin Plastic DIP
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
OPA4650U
OPA4650P
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 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 published speci-
fications.
®
3
OPA4650
TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, V
S
=
±5V,
R
L
= 100Ω, and R
FB
= 402Ω, unless otherwise noted. R
FB
= 25Ω for a gain of +1.
COMMON-MODE REJECTION
vs INPUT COMMON-MODE VOLTAGE
100
A
OL
, PSR AND CMRR vs TEMPERATURE
110
Common-Mode Rejection (dB)
90
A
OL
, PSR and CMRR (dB)
100
90
80
70
PSR–
60
50
A
OL
CMRR
80
PSR+
70
60
–4
–3
–2
–1
0
1
2
3
4
Common-Mode Voltage (V)
–50
–25
0
25
50
75
125
Temperature (°C)
INPUT BIAS CURRENT AND OFFSET VOLTAGE
vs TEMPERATURE
7
2
SUPPLY CURRENT vs TEMPERATURE
26
Input Bias Current (mA)
Supply Current (±mA)
Offset Voltage (mV)
V
OS
6
1
24
5
I
B
4
–50
0
22
I
Q
–1
–25
0
25
50
75
100
Temperature (°C)
20
–50
–25
0
25
50
75
100
Temperature (°C)
OUTPUT CURRENT vs TEMPERATURE
70
INPUT VOLTAGE AND CURRENT NOISE
vs FREQUENCY
100
Input Voltage Noise (nV/√Hz)
Input Current Noise (pA/√Hz)
Output Current (±mA)
65
I+
O
60
–
I
O
55
–50
Voltage Noise
10
Non-inverting and
Inverting Current Noise
1
100
1k
10k
Frequency (Hz)
100k
1M
–25
0
25
50
75
100
Temperature (°C)
®
OPA4650
4
TYPICAL PERFORMANCE CURVES
(CONT)
At T
A
= +25°C, V
S
=
±5V,
R
L
= 100Ω, and R
FB
= 402Ω, unless otherwise noted. R
FB
= 25Ω for a gain of +1.
RECOMMENDED ISOLATION RESISTANCE
vs CAPACITIVE LOAD
40
SMALL SIGNAL TRANSIENT RESPONSE
(G = +1)
200
160
Isolation Resistance, R
ISO
(Ω)
Output Voltage (mV)
C
L
1kΩ
30
25Ω
120
80
40
0
–40
–80
–120
–160
20
R
ISO
OPA4650
10
0
0
20
40
60
L
–200
80
100
Time (5ns/div)
Capacitive Load, C (pF)
LARGE SIGNAL TRANSIENT RESPONSE
(G = +1)
2.0
1.6
1.2
Output Voltage (V)
CLOSED-LOOP BANDWIDTH (G = +1)
6
3
0
Gain (dB)
SO-14/DIP Bandwidth = 360MHz
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
–2.0
Time (5ns/div)
–3
–6
–9
–12
1M
10M
100M
1G
Frequency (Hz)
CLOSED-LOOP BANDWIDTH (G = +2)
12
9
6
Gain (dB)
Gain (dB)
CLOSED-LOOP BANDWIDTH (G = +5)
21
SO-14/DIP Bandwidth = 120MHz
17
14
11
8
5
2
–1
SO-14/DIP Bandwidth = 35MHz
3
0
–3
–6
–9
1M
10M
100M
1G
Frequency (Hz)
1M
10M
100M
1G
Frequency (Hz)
®
5
OPA4650
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