AD8022AR-EVAL

a 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 AD8022 – + OUT1 1 –IN1 2 +IN1 3 –VS 4 8 7 +VS OUT2 –IN2 +IN2 – + 6 5 PRODUCT DESCRIPTION 3.0 VOLTAGE NOISE, nV 2.5 The AD8022 consists of two low-noise, high-speed, voltage feedback 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 differential receiver from the line transformer or as independent active filters in an xDSL line interface circuit. pA AND nV/ Hz 2.0 1.5 CURRENT NOISE, pA 1.0 0.5 0 10k 100k FREQUENCY – Hz 1M Figure 1. Current and Voltage Noise vs. Frequency R EV. 0 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 AD8022–SPECIFICATIONS otherwise noted) Parameter DYNAMIC PERFORMANCE –3 dB Small Signal Bandwidth Bandwidth for 0.1 dB Flatness Large Signal Bandwidth Slew Rate Rise and Fall Time Settling Time 0.1% Overdrive Recovery Time NOISE/DISTORTION PERFORMANCE Distortion Second Harmonic Third Harmonic Multitone Input Power Ratio1 Conditions (@ 25 C, VS = 12 V, RL = 500 , G = 1, T MIN = –40 C, TMAX = +85 C, unless Min Typ 120 25 15 50 30 62 200 Max Unit MHz MHz MHz V/µs ns ns ns VOUT = 0.2 V p-p VOUT = 0.2 V p-p VOUT = 4 V p-p VOUT = 2 V p-p, G = 2 VOUT = 2 V p-p, G = 2 VOUT = 2 V p-p VOUT = 150% of Max Output Voltage, G = 2 VOUT = 2 V p-p fC = 1 MHz fC = 1 MHz G = 7 Differential 26 kHz to 132 kHz 144 kHz to 1.1 MHz f = 100 kHz f = 100 kHz –6 –7.25 –5 –7.5 –95 –100 –67.2 –66 2.5 1.2 –1.5 +2.5 20 0.7 –11.25 to +11.75 +6 +7.25 +5 +7.5 dBc dBc dBc dBc nV/√Hz pA/√Hz mV mV µA µA kΩ pF V V mA pF V mA/Amp mA dB °C Voltage Noise (RTI) Input Current Noise INPUT CHARACTERISTICS RTI Offset Voltage TMIN to TMAX Input Bias Current TMIN to TMAX Input Resistance (Differential) Input Capacitance Input Common-Mode Voltage Range OUTPUT CHARACTERISTICS Output Voltage Swing Short Circuit Output Current Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current Power Supply Rejection Ratio OPERATING TEMPERATURE RANGE NOTES 1 Multitone testing performed with 800 mV rms across a 500 Ω load at Points A and B on Figure 17. Specifications subject to change without notice. Single-Ended RS = 0 Ω,