Datasheet AD8022 (Analog Devices)

Dual High Speed, Low Noise Op Amp Data Sheet AD8022 FEATURES FUNCTIONAL BLOCK DIAGRAM Low power amplifiers provide low noise and low distortion, AD8022 ideal for xDSL modem receiver OUT1 1 8 +VS Wide supply range: +5 V, ±2.5 V to ±12 V voltage supply –IN1 2 – 7 OUT2 Low power consumption: 4.0 mA/Amp + +IN1 3 6 –IN2 Voltage feedback –
001
+ Ease of Use –V 4 5 S +IN2
01053-
Lower total noise (insignificant input current noise contribution compared to current feedback amps)
Figure 1.
Low noise and distortion 2.5 nV/√Hz voltage noise @ 100 kHz 1.2 pA/√Hz current noise MTPR < −66 dBc (G = +7) SFDR 110 dB @ 200 kHz High speed 130 MHz bandwidth (−3 dB), G = +1 Settling time to 0.1%, 68 ns 50 V/μs slew rate High output swing: ±10.1 V on ±12 V supply Low offset voltage, 1.5 mV typical APPLICATIONS Receiver for ADSL, VDSL, HDSL, and proprietary xDSL systems Low noise instrumentation front end Ultrasound preamps Active filters 16-bit ADC buffers GENERAL DESCRIPTIONS 100
The AD8022 consists of two low noise, high speed, voltage feedback amplifiers. Each amplifier consumes only 4.0 mA of quiescent current, yet has only 2.5 nV/√Hz of voltage noise. These dual amplifiers provide wideband, low distortion
z) H
performance, with high output current optimized for stability when driving capacitive loads. Manufactured on ADI’s high
10 Hz, nV/
voltage generation of XFCB bipolar process, the AD8022 operates on a wide range of supply voltages. The AD8022 is
(pA/
available in both an 8-lead MSOP and an 8-lead SOIC. Fast over
eN (nV/ Hz)
voltage recovery and wide bandwidth make the AD8022 ideal as the receive channel front end to an ADSL, VDSL, or proprietary
iN (pA/ Hz)
xDSL transceiver design.
1
01053-002
10 100 1k 10k 100k 1M 10M
In an xDSL line interface circuit, the AD8022’s op amps can be
FREQUENCY (Hz)
configured as the differential receiver from the line transformer Figure 2. Current and Voltage Noise vs. Frequency or as independent active filters.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTIONS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS MAXIMUM POWER DISSIPATION ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS DMT MODULATION AND MULTITONE POWER RATIO (MTPR) CHANNEL CAPACITY AND SNR POWER SUPPLY AND DECOUPLING LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE