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ADA4861-3
High Speed, Low Cost, Triple Op-Amp
High Speed, Low Cost,
Triple Op Amp
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
PIN CONFIGURATION
POWER DOWN 1OUT 2
POWER DOWN 2–IN 2
POWER DOWN 3+IN 2
+VS–VS
+IN 1+IN 3
–IN 1–IN 3
OUT 1OUT 3Figure 1.
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.
5.10.11101001000OOP
FREQUENCY (MHz)
Figure 2. Large Signal 0.1 dB Flatness
TABLE OF CONTENTS Features..............................................................................................1
Applications.......................................................................................1
Pin Configuration.............................................................................1
General Description.........................................................................1
Revision History...............................................................................2
Specifications.....................................................................................3
Absolute Maximum Ratings............................................................5
Thermal Resistance......................................................................5
ESD Caution..................................................................................5
Typical Performance Characteristics.............................................6
Applications.....................................................................................13
Gain Configurations..................................................................13
20 MHz Active Low-Pass Filter................................................13
RGB Video Driver......................................................................14
Driving Two Video Loads.........................................................14
POWER-DOWN Pins...............................................................14
Single-Supply Operation...........................................................15
Power Supply Bypassing............................................................15
Layout..........................................................................................15
Outline Dimensions.......................................................................16
Ordering Guide..........................................................................16
REVISION HISTORY
3/06—Rev 0 to Rev. A Changes to 20 MHz Active Low-Pass Filter Section..................13
Changes to Figure 48 and Figure 49.............................................13
10/05—Revision 0: Initial Version SPECIFICATIONS VS = +5 V (@ TA = 25°C, G = +2, RL = 150 Ω, CL = 4 pF, unless otherwise noted); for G = +2, RF = RG = 301 Ω; and for G = +1, RF = 499 Ω.
Table 1.
VS = ±5 V (@ TA = 25°C, G = +2, RL = 150 Ω, CL = 4 pF, unless otherwise noted); for G = +2, RF = RG = 301 Ω; and for G = +1, RF = 499 Ω.
Table 2.
