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PDF ADA4861-3 Data sheet ( Hoja de datos )
| Número de pieza | ADA4861-3 | |
| Descripción | Triple Op Amp | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
High speed
730 MHz, −3 dB bandwidth
625 V/μs slew rate
13 ns settling time to 0.5%
Wide supply range: 5 V to 12 V
Low power: 6 mA/amplifier
0.1 dB flatness: 100 MHz
Differential gain: 0.01%
Differential phase: 0.02°
Low voltage offset: 100 μV (typical)
High output current: 25 mA
Power down
APPLICATIONS
Consumer video
Professional video
Broadband video
ADC buffers
Active filters
GENERAL DESCRIPTION
The ADA4861-3 is a low cost, high speed, current feedback,
triple op amp that provides excellent overall performance. The
730 MHz, −3 dB bandwidth, and 625 V/μs slew rate make this
amplifier well suited for many high speed applications. With its
combination of low price, excellent differential gain (0.01%),
differential phase (0.02°), and 0.1 dB flatness out to 100 MHz,
this amplifier is ideal for both consumer and professional video
applications.
The ADA4861-3 is designed to operate on supply voltages as
low as +5 V and up to ±5 V using only 6 mA/amplifier of supply
current. To further reduce power consumption, each amplifier
is equipped with a power-down feature that lowers the supply
current to 0.3 mA/amplifier when not being used.
The ADA4861-3 is available in a 14-lead SOIC_N package and
is designed to work over the extended temperature range of
−40°C to +105°C.
High Speed, Low Cost,
Triple Op Amp
ADA4861-3
PIN CONFIGURATION
POWER DOWN 1 1
14 OUT 2
POWER DOWN 2 2
13 –IN 2
POWER DOWN 3 3
12 +IN 2
+VS 4 ADA4861-3 11 –VS
+IN 1 5
10 +IN 3
–IN 1 6
9 –IN 3
OUT 1 7
8 OUT 3
Figure 1.
6.1
6.0
5.9
5.8
5.7
5.6
5.5
5.4
5.3
5.2
5.1
0.1
G = +2
VOUT = 2V p-p
RF = RG = 301Ω
VS = +5V
VS = ±5V
1 10 100
FREQUENCY (MHz)
Figure 2. Large Signal 0.1 dB Flatness
1000
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Rating
Supply Voltage
Power Dissipation
12.6 V
See Figure 3
Common-Mode Input Voltage
Differential Input Voltage
Storage Temperature
−VS + 1 V to +VS − 1 V
±VS
−65°C to +125°C
Operating Temperature Range
Lead Temperature
−40°C to +105°C
JEDEC J-STD-20
Junction Temperature
150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, θJA is
specified for device soldered in circuit board for surface-mount
packages.
Table 4. Thermal Resistance
Package Type
14-lead SOIC_N
θJA
90
Unit
°C/W
Maximum Power Dissipation
The maximum safe power dissipation for the ADA4861-3 is
limited by the associated rise in junction temperature (TJ) on
the die. At approximately 150°C, which is the glass transition
temperature, the plastic changes its properties. Even temporarily
exceeding this temperature limit can change the stresses that the
package exerts on the die, permanently shifting the parametric
performance of the amplifiers. Exceeding a junction temperature of
150°C for an extended period can result in changes in silicon
devices, potentially causing degradation or loss of functionality.
ADA4861-3
The power dissipated in the package (PD) is the sum of the
quiescent power dissipation and the power dissipated in the die
due to the amplifiers’ drive at the output. The quiescent power
is the voltage between the supply pins (VS) times the quiescent
current (IS).
PD = Quiescent Power + (Total Drive Power − Load Power)
PD
=
(VS
× IS
)
+
⎜⎛
⎝
VS
2
× VOUT
RL
⎟⎞
⎠
–
VOUT
RL
2
RMS output voltages should be considered.
Airflow increases heat dissipation, effectively reducing θJA.
In addition, more metal directly in contact with the package
leads and through holes under the device reduces θJA.
Figure 3 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the 14-lead SOIC_N
(90°C/W) on a JEDEC standard 4-layer board. θJA values are
approximations.
2.5
2.0
1.5
1.0
0.5
0
–55 –45 –35 –25 –15 –5 5 15 25 35 45 55 65 75 85 95 105 115 125
AMBIENT TEMPERATURE (°C)
Figure 3. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. A | Page 5 of 16
5 Page 
1000
100
10
PHASE
0
VS = ±5V
G = +2
TRANSIMPEDANCE
–45
–90
1 –135
0.1
0.01
0.1 1 10 100
FREQUENCY (MHz)
–180
1000
Figure 34. Transimpedance and Phase vs. Frequency
0 VS = ±5V
G = +2
–10
–20
–30
–40
–50
–60
–70
–80
0.01
0.1
–PSR
+PSR
1 10
FREQUENCY (MHz)
100
Figure 35. Power Supply Rejection vs. Frequency
1000
6
INPUT VOLTAGE × 2
VS = ±5V
5 G = +2
f = 1MHz
4
OUTPUT VOLTAGE
3
2
1
0
–1
–2
–3
–4
–5
–6
0 100 200 300 400 500 600 700 800 900 1000
TIME (ns)
Figure 36. Output Overdrive Recovery
ADA4861-3
0
VS = ±5V, +5V
–10 G = +2
VOUT = 2V p-p
–20
–30
–40
–50
–60
–70
–80
–90
–100
0.1
1
10
FREQUENCY (MHz)
100
Figure 37. Large Signal All-Hostile Crosstalk
1000
0 VS = ±5V
G = +2
–10 VIN = 2V p-p
–20
–30
–40
–50
–60
–70
0.01
0.1 1 10 100
FREQUENCY (MHz)
1000
Figure 38. Common-Mode Rejection vs. Frequency
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
0
INPUT VOLTAGE × 2
OUTPUT VOLTAGE
VS = 5V
G = +2
f = 1MHz
100 200 300 400 500 600 700 800 900 1000
TIME (ns)
Figure 39. Output Overdrive Recovery
Rev. A | Page 11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ADA4861-3.PDF ] | |
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