ADA4858-3 Datasheet, PDF (1/16 Pages) Analog Devices – Single-Supply, High Speed, Triple Op Amp with Charge Pump

Single-Supply, High Speed,
Triple Op Amp with Charge Pump
ADA4858-3
FEATURES
Integrated charge pump
Supply range: 3 V to 5.5 V
Output range: −3.3 V to −1.8 V
50 mA maximum output current for external use at −3 V
High speed amplifiers
−3 dB bandwidth: 600 MHz
Slew rate: 600 V/μs
0.1 dB flatness: 85 MHz
0.1% settling time: 18 ns
Low power
Total quiescent current: 42 mA
Power-down feature
High input common-mode voltage range
−1.8 V to +3.8 V at +5 V supply
Current feedback architecture
Differential gain error: 0.01%
Differential phase error: 0.02°
Available in 16-lead LFCSP
CONNECTION DIAGRAM
ADA4858-3
16 15 14 13
+V_S 1
C1_a 2
C1_b 3
CPO 4
CHARGE
PUMP
12 +IN2
11 –IN2
10 OUT2
9 PD
5 67 8
NOTES
1. NC = NO CONNECT.
2. EXPOSED PAD, CONNECT TO GROUND.
Figure 1.
APPLICATIONS
Professional video
Consumer video
Imaging
Active filters
GENERAL DESCRIPTION
The ADA4858-3 (triple) is a single-supply, high speed current
feedback amplifier with an integrated charge pump that eliminates
the need for negative supplies in order to output negative voltages
or output a 0 V level for video applications. The 600 MHz
−3 dB bandwidth and 600 V/μs slew rate make this amplifier
well suited for many high speed applications. In addition, its
0.1 dB flatness out to 85 MHz at G = 2, along with its differential
gain and phase errors of 0.01% and 0.02° into a 150 Ω load,
make it well suited for professional and consumer video
applications.
This triple operational amplifier is designed to operate on
supply voltages of 3.3 V to 5 V, using only 42 mA of total
quiescent current, including the charge pump. To further
reduce the power consumption, it is equipped with a power-
down feature that lowers the total supply current to as low as
2.5 mA when the amplifier is not being used. Even in power-
down mode, the charge pump can be used to power external
components. The maximum output current for external use is
50 mA at −3 V. The amplifier also has a wide input common-
mode voltage range that extends from 1.8 V below ground to
1.2 V below the positive rail at a 5 V supply.
The ADA4858-3 is available in a 16-lead LFCSP, and it is designed
to work over the extended industrial temperature range of
−40°C to +105°C.
Rev. 0
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