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PDF ADA4855-3 Data sheet ( Hoja de datos )
| Número de pieza | ADA4855-3 | |
| Descripción | Triple Op Amp | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Single Supply, High Speed,
Rail-to-Rail Output, Triple Op Amp
ADA4855-3
FEATURES
Voltage feedback architecture
Rail-to-rail output swing: 0.1 V to 4.9 V
High speed amplifiers
410 MHz, −3 dB bandwidth, G = 1
210 MHz, −3 dB bandwidth, G = 2
Slew rate: 870 V/µs
53 MHz, 0.1 dB large signal flatness
5.3 ns settling time to 0.1% with 2 V step
High input common-mode voltage range
−VS − 0.2 V to +VS − 1 V
Supply range: 3 V to 5.5 V
Differential gain error: 0.01%
Differential phase error: 0.01°
Low power
7.8 mA/amplifier typical supply current
Power-down feature
Available in 16-lead LFCSP
APPLICATIONS
Professional video
Consumer video
Imaging
Instrumentation
Base stations
Active filters
CONNECTION DIAGRAM
16 15 14 13
NC 1
+IN2 2
NC 3
PD 4
ADA4855-3
5 67 8
12 +VS
11 OUT2
10 –IN2
9 +VS
NOTES
1. NC = NO CONNECT.
2. EXPOSED PAD CONNECTED TO –VS.
Figure 1.
GENERAL DESCRIPTION
The ADA4855-3 (triple) is a single-supply, rail-to-rail output
operational amplifier. It provides excellent high speed performance
with 410 MHz, −3 dB bandwidth and a slew rate of 870 V/µs. It
has a wide input common-mode voltage range that extends from
0.2 V below ground to 1 V below the positive rail.In addition,
the output voltage swings within 100 mV of either supply rail,
making this rail-to-rail operational amplifier easy to use on single-
supply voltages as low as 3.3 V.
The ADA4855-3 offers a typical low power of 7.8 mA per amplifier
and is capable of delivering up to 57 mA of load current. It also
features a power-down function for power sensitive applications
that reduces the supply current down to 1 mA.
The ADA4855-3 is available in a 16-lead LFCSP and is designed
to work over the extended industrial temperature range of
−40°C to +105°C.
1
0
G=1
–1
G=2
–2 G = 5
–3
–4
–5
–6
1
10 100
FREQUENCY (MHz)
Figure 2. Frequency Response
1000
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADA4855-3
3.3 V OPERATION
TA = 25°C, VS = 3.3 V, G = 1, RL = 150 Ω, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion (HD2/HD3)
Crosstalk, Output to Output
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Linear Output Current per Amplifier
POWER-DOWN
Turn-On Time
Turn-Off Time
Turn-On Voltage
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Supply Current When Powered Down
Power Supply Rejection Ratio
Test Conditions
VO = 0.1 V p-p
VO = 1.4 V p-p
VO = 0.1 V p-p, G = 2
VO = 2 V p-p, G = 2
VO = 1.4 V p-p, G = 2
VO = 2 V step, G = 2
VO = 2 V step (rise/fall), G = 2
fC = 5 MHz, VO = 2 V p-p, RL = 1 kΩ
fC = 20 MHz, VO = 2 V p-p, RL = 1 kΩ
f = 5 MHz, G = 2
f = 100 kHz
f = 100 kHz
G=2
G=2
VO = 0.5 V to 4.5 V
VCM = –0.2 V to +3.2 V
HD2 ≤ −60 dBc, RL = 10 Ω
∆VS = 2.97 V to 3.63 V
Data Sheet
Min
−VS − 0.2
3
Typ
430
210
210
125
55
870
7.4/7.1
−76/−76
−68/−75
−88
6.8
2
0.01
0.01
1.3
5.5
−3.8
0.05
92
6.4
0.5
94
0.1 to 3.22
40
78
1.2
+VS − 1.25
7.5
0.95
94
Max Unit
MHz
MHz
MHz
MHz
MHz
V/µs
ns
dBc
dBc
dBc
nV/√Hz
pA/√Hz
%
Degrees
mV
µV/°C
µA
µA
dB
+VS − 1
MΩ
pF
V
dB
V
mA
ns
µs
V
5.5 V
mA
mA
dB
Rev. A | Page 4 of 20
5 Page 
ADA4855-3
0.08
0.06
VS = 3.3V
VS = 5V
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
TIME (10ns/DIV)
Figure 23. Small Signal Transient Response vs. Supply Voltage
0.08
0.06
0.04 CL = 2.2pF
CL = 4.4pF
0.02 CL = 6.6pF
0
–0.02
–0.04
–0.06
–0.08
TIME (10ns/DIV)
Figure 24. Small Signal Transient Response vs. Capacitive Load
1.5
RL = 150Ω
RL = 1kΩ
1.0
0.5
0
–0.5
–1.0
–1.5
TIME (10ns/DIV)
Figure 25. Large Signal Transient Response vs. Load Resistance
Data Sheet
1.5
CL = 2.2pF
1.0 CL = 4.4pF
CL = 6.6pF
0.5
0
–0.5
–1.0
–1.5
TIME (10ns/DIV)
Figure 26. Large Signal Transient Response vs. Capacitive Load
0.08
0.06
CL = 2.2pF
0.04 CL = 4.4pF
CL = 6.6pF
0.02
0
–0.02
–0.04
–0.06
–0.08
VS = 3.3V
TIME (10ns/DIV)
Figure 27. Small Signal Transient Response vs. Capacitive Load
23.7
23.2
22.7
22.2
21.7
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
SUPPLY VOLTAGE (V)
Figure 28. Quiescent Current vs. Supply Voltage
Rev. A | Page 10 of 20
11 Page | ||
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