Dual 350 MHz Low Power Amplifier * AD8012 FEATURES FUNCTIONAL BLOCK DIAGRAM Low Power 1.7 mA/Amplifier Supply Current +V OUT1 1 8 S Fully Specified for 5 V and +5 V Supplies High Output Current, 125 mA 2 7 OUT2 IN1 High Speed 3 6 +IN1 IN2 350 MHz, 3 dB Bandwidth (G = +1) V +IN2 4 5 S 150 MHz, 3 dB Bandwidth (G = +2) AD8012 2,250 V/ s Slew Rate 20 ns Settling Time to 0.1% Low Distortion 72 dBc Worst Harmonic 500 kHz, R = 100 L 66 dBc Worst Harmonic 5 MHz, R = 1 k L Good Video Specifications (R = 1 k , G = +2) L 0.02% Differential Gain Error 0.06 Differential Phase Error Gain Flatness 0.1 dB to 40 MHz 60 ns Overdrive Recovery 40 Low Offset Voltage, 1.5 mV G = +2 Low Voltage Noise, 2.5 nV/Hz V = 2V p-p OUT Available in 8-Lead SOIC and 8-Lead MSOP R = 750 50 F APPLICATIONS XDSL, HDSL Line Drivers 60 ADC Buffers Professional Cameras THIRD CCD Imaging Systems 70 Ultrasound Equipment Digital Cameras 80 SECOND PRODUCT DESCRIPTION The AD8012 is a dual, low power, current feedback amplifier 90 10 100 1k capable of providing 350 MHz bandwidth while using only R L 1.7 mA per amplifier. It is intended for use in high frequency, Figure 1. Distortion vs. Load Resistance, V = 5V, S wide dynamic range systems where low distortion and high Frequency = 500 kHz speed are essential and low power is critical. With only 1.7 mA of supply current, the AD8012 also offers +V S exceptional ac specifications such as 20 ns settling time and + R1 2,250 V/s slew rate. The video specifications are 0.02% differ- AMP 1 + ential gain and 0.06 degree differential phase, excellent for such a low power amplifier. In addition, the AD8012 has a low offset R = 100 L LINE V V REF IN V OR of 1.5 mV. OUT POWER 135 IN dB The AD8012 is well suited for any application that requires high R2 performance with minimal power. Np:Ns TRANSFORMER The product is available in standard 8-lead SOIC or MSOP V S packages and operates over the industrial temperature range 40C to +85C. Figure 2. Differential Drive Circuit for XDSL Applications *Protected under U.S. Patent Number 5,537,079. Rev. C Document Feedback 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. Specifications subject to change without One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. notice. No license is granted by implication or otherwise under any patent Tel: 781.329.4700 1 9 9 72019 Analog Devices, Inc. All ights r reserved. or patent rights of Analog Devices. Trademarks and registered trademarks Technical Support www.analog.com are the property of their respective owners. DISTORTION dBcAD8012SPECIFICATIONS ( T = 25 C, V = 5 V, G = +2, R = 100 , R = R = 750 , unless otherwise noted.) DUAL SUPPLY A S L F G Parameter Conditions Min Typ Max Unit DYNAMIC PERFORMANCE 3 dB Small Signal Bandwidth G = +1, V < 0.4 V p-p, R = 1 k 270 350 MHz OUT L G=+2, V < 0.4 V p-p, R = 1 k 95 150 MHz OUT L G=+2, V < 0.4 V p-p, R = 100 90 MHz OUT L 0.1 dB Bandwidth V < 0.4 V p-p, R = 1 k /100 40/23 MHz OUT L Large Signal Bandwidth V = 4 V p-p 75 MHz OUT Slew Rate V = 4 V p-p 2,250 V/s OUT Rise and Fall Time V = 2 V p-p 3 ns OUT Settling Time 0.1%, V = 2 V p-p 20 ns OUT 0.02%, V = 2 V p-p 35 ns OUT Overdrive Recovery 2 Overdrive 60 ns NOISE/HARMONIC PERFORMANCE Distortion V = 2 V p-p, G = +2 OUT Second Harmonic 500 kHz, R = 1 k /100 89/73 dBc L 5 MHz, R = 1 k /100 78/62 dBc L Third Harmonic 500 kHz, R = 1 k /100 84/72 dBc L 5 MHz, R = 1 k /100 66/52 dBc L Output IP3 500 kHz, f = 10 kHz, R = 1 k /100 30/40 dBm L IMD 500 kHz, f = 10 kHz, R = 1 k /100 79/77 dBc L Crosstalk 5 MHz, R = 100 70 dB L Input Voltage Noise f = 10 kHz 2.5 nV/Hz Input Current Noise f = 10 kHz, +Input, Input 15 pA/Hz Differential Gain f = 3.58 MHz, R = 150 /1 k , G = +2 0.02/0.02 % L Differential Phase f = 3.58 MHz, R = 150 /1 k , G = +2 0.3/0.06 Degrees L DC PERFORMANCE Input Offset Voltage 1.5 4mV T T 5mV MIN MAX Open-Loop Transimpedance V = 2 V, R = 100 240 500 k OUT L T T 200 k MIN MAX INPUT CHARACTERISTICS Input Resistance +Input 450 k Input Capacitance +Input 2.3 pF Input Bias Current +Input, Input 3 12 A +Input, Input, T T 15 A MIN MAX Common-Mode Rejection Ratio V = 2.5 V 56 60 dB CM Input Common-Mode Voltage Range 3.8 4.1 V OUTPUT CHARACTERISTICS Output Resistance G = +2 0.1 Output Voltage Swing 3.85 4V Output Current T T 70 125 mA MIN MAX Short-Circuit Current 500 mA POWER SUPPLY Supply Current/Amp 1.7 1.8 mA T T 1.9 mA MIN MAX Operating Range Dual Supply 1.5 6.0 V Power Supply Rejection Ratio 58 60 dB Specifications subject to change without notice. 2 REV. C