AD8091 Datasheet, PDF (1/16 Pages) Analog Devices – Low-Cost, High-Speed Rail-to-Rail Amplifiers

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Low-Cost, High-Speed
Rail-to-Rail Amplifiers
AD8091/AD8092
FEATURES
Low-Cost Single (AD8091), Dual (AD8092)
Voltage Feedback Architecture
Fully Specified at +3 V, +5 V, and ؎5 V Supplies
Single-Supply Operation
Output Swings to within 25 mV of Either Rail
Input Voltage Range
–0.2 V to +4 V; V_S = +5 V
High-Speed and Fast Settling on +5 V
110 MHz –3 dB Bandwidth (G = +1)
145 V/␮s Slew Rate
50 ns Settling Time to 0.1%
Good Video Specifications (G = +2)
Gain Flatness of 0.1 dB to 20 MHz; R_L = 150 ⍀
0.03% Differential Gain Error; R_L = 1 k⍀
0.03؇ Differential Phase Error; R_L = 1 k⍀
Low Distortion
–80 dBc Total Harmonic @ 1 MHz; R_L = 100 ⍀
Outstanding Load Drive Capability
Drives 45 mA, 0.5 V from Supply Rails
Drives 50 pF Capacitive Load (G = +1)
Low Power of 4.4 mA/Amplifier
APPLICATIONS
Coaxial Cable Driver
Active Filters
Video Switchers
Professional Cameras
CCD Imaging Systems
CD/DVD
CONNECTION DIAGRAMS
SOIC-8
(R-8)
NC ¹
–IN 2
+IN 3
–V_S 4
AD8091
8 NC
7 +V_S
6 V_OUT
5 NC
NC = NO CONNECT
␮SOIC-8 and SOIC-8
(RM-8, R-8)
OUT1 1
–IN1 2
+IN1 3
–V_S 4
AD8092
–
+
–
+
8 +V_S
7 OUT
6 –IN2
5 +IN2
SOT23-5
(RT-5)
V_OUT 1
–V_S 2
+IN 3
AD8091
5 +V_S
4 –IN
PRODUCT DESCRIPTION
The AD8091 (single) and AD8092 (dual) are low-cost, voltage
feedback, high-speed amplifiers designed to operate on +3 V, +5 V,
or ± 5 V supplies. They have true single-supply capability with
an input voltage range extending 200 mV below the negative rail
and within 1 V of the positive rail.
Despite their low cost, the AD8091/AD8092 provide excellent over-
all performance and versatility. The output voltage swing extends
to within 25 mV of each rail, providing the maximum output
dynamic range with excellent overdrive recovery. This makes the
AD8091/AD8092 useful for video electronics, such as cameras,
video switchers, or any high-speed portable equipment. Low distor-
tion and fast settling make them ideal for active filter applications.
The AD8091/AD8092 offer a low-power supply current and
can operate on a single +3 V power supply. These features are
ideally suited for portable and battery-powered applications
where size and power are critical.
The wide bandwidth and fast slew rate make these amplifiers
useful in many general-purpose, high-speed applications where
dual power supplies of up to ± 6 V and single supplies from +3 V
to +12 V are needed.
All of this low-cost performance is offered in an 8-lead SOIC
(AD8091/AD8092), along with a tiny SOT23-5 package
(AD8091) and a µSOIC package (AD8092).
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 2002