AD8022 Datasheet, PDF (1/15 Pages) Analog Devices – Dual High-Speed Low-Noise Op Amps

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FEATURES
Low-Noise Amplifiers Provide Low Noise and Low
Distortion, Ideal for xDSL Modem Receiver
+5 V to ؎12 V Voltage Supply
Low-Power Consumption
4.0 mA/Amp (Typ) Supply Current
Voltage Feedback Amplifiers
Low Noise and Distortion
2.5 nV/√Hz Voltage Noise @ 100 kHz
SFDR –95 dBc @ 1 MHz
MTPR < –66 dBc
High Speed
120 MHz Bandwidth (–3 dB), G = 1
50 V/␮s Slew Rate
Low-Offset Voltage, 1.5 mV Typical
APPLICATIONS
ADSL, VDSL, HDSL, and Proprietary xDSL Systems
Low-Noise Instrumentation Front End
Ultrasound Preamp
Dual High-Speed
Low-Noise Op Amps
AD8022
FUNCTIONAL BLOCK DIAGRAM
OUT1 1
–IN1 2
+IN1 3
–V_S 4
AD8022
–
+
8 +V_S
7 OUT2
6 –IN2
5 +IN2
PRODUCT DESCRIPTION
The AD8022 consists of two low-noise, high-speed, voltage feed-
back amplifiers. Both inputs add only 2.5 nV/√Hz of voltage
noise. These dual amplifiers provide wideband, low-distortion
performance, with high-output current optimized for stability
when driving capacitive loads. Operating from +5 V to ± 12 V
supplies, the AD8022 typically consumes only 4.0 mA/Amp
quiescent current. The AD8022 is available in both an 8-lead
microSOIC and an 8-lead SOIC package. Fast overvoltage
recovery and wide bandwidth make the AD8022 ideal as the
receive channel front end to an ADSL, VDSL or proprietary
xDSL transceiver design.
Low-noise receive amplifiers in the AD8022 are independent
voltage feedback amplifiers and can be configured as the differ-
ential receiver from the line transformer or as independent active
filters in an xDSL line interface circuit.
3.0
VOLTAGE NOISE, nV
2.5
2.0
1.5
CURRENT NOISE, pA
1.0
0.5
0
10k
100k
1M
FREQUENCY – Hz
Figure 1. Current and Voltage Noise vs. Frequency
REV. 0
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© Analog Devices, Inc., 1999