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ISL55211IRTZ-EVAL1Z датащи(PDF) 1 Page - Intersil Corporation |
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ISL55211IRTZ-EVAL1Z датащи(HTML) 1 Page - Intersil Corporation |
1 / 20 page 1 Wideband, Low Noise, Low Distortion, Fixed Gain, Differential Amplifier ISL55211 The ISL55211 is a wideband, differential input to differential output amplifier offering 3 possible internal gain settings. Using fixed 500Ω internal feedback resistors, the amplifier may be configured for a differential gain of 2, 4 or 5V/V depending on which combination of input pins are connected to the signal source. Internal feedback capacitors controls the signal bandwidth to be a constant 1.4GHz in all gain settings. Ideally suited for AC-coupled data acquisition applications, the output DC common mode voltage is controlled through an external VCM pin or left to default to 1.2V above the negative supply pin. Where the differential signal source is AC-coupled, the input common mode voltage will equal the output common mode voltage. Intended for very high dynamic range ADC interface applications, the ISL55211 offers 5600V/µs differential slew rate, <12nV/√Hz output noise, and >100dBc SFDR to >100MHz for 2VP-P 2-tone 3rd order intermodulation. Its balanced architecture effectively suppresses even order distortion terms - an important issue for very wide band 1st Nyquist zone ADC interface applications. Minimum gain operation of 2V/V (6dB) with <1dB peaking ensures stable performance over-temperature. It's ultra high differential slew rate of 5600V/µs provides adequate performance margin for large signal application through 500MHz. The ISL55211 requires only a single 3.3V (max. 4.2V) power supply and 35mA quiescent current, providing a very low power solution (115mW). Further power savings are possible using the optional power shutdown control - where the quiescent current can be reduced to <0.4mA. A companion device, the ISL55210, offers similar performance where the feedback and gain resistors are external. Both are available in a 16 Ld TQFN (Pb-free) package and are specified for operation over the -40°C to +85°C ambient temperature range. Features • 3 Fixed Gain Options . . . . . . . . . . . . . . . . . . . . . . . 2, 4, or 5V/V • Constant Bandwidth Over Gain . . . . . . . . . . . . . . . . . . 1.4GHz • Differential Slew Rate . . . . . . . . . . . . . . . . . . . . . . . 5,600V/µs •2VP-P, 2-tone IM3 (200Ω) 100MHz . . . . . . . . . . . . . . -103dBc • Low Differential Output Noise (Gain 5V/V) . . . . . . <12nV/√Hz • Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 3.0V to 4.2V • Quiescent Power (3.3V Supply) . . . . . . . . . . . . . . . . . .115mW Applications • Low Power, High Dynamic Range ADC Interface • Differential Mixer Output Amplifier • SAW Filter Pre/Post Driver • Fixed Gain Coax Receiver Related Devices • ISL55210 - External Gain Set Version • ISLA112P50 - 12-bit, 500MSPS ADC (<500mW) • ISLA214P50 - 14-bit, 500MSPS ADC (<850mW) Related Literature • AN1649 - “Designer’s guide to the ISL55210 and ISL55211 Evaluation Boards” -13 -10 -7 -4 -1 2 5 8 11 14 17 20 23 1M 10M 100M 1G 50 1:2 ISL55211 +3.3V + - VCM 22pF 10 300 8pF ISLA214P50 1:1.4 50 VCM ADT4-1T ADT2-1T Vi G=5V/V 120nH 120nH VADC HIGHGAIN, VERYLOWPOWER, ADCINTERFACEWITH3RD ORDEROUTPUTFILTER 20log VADC Vi =20dB 35mA (115mW) 14Bit 500MSPS 180mVP-P For ADC-1dBFS 1.2V (850mW) 10 50 FIGURE 1. TYPICAL APPLICATION CIRCUIT FREQUENCY (Hz) MEASURED FREQUENCY RESPONSE June 21, 2011 FN7868.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved Intersil (and design) and FemtoCharge are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
Аналогичный номер детали - ISL55211IRTZ-EVAL1Z |
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Аналогичное описание - ISL55211IRTZ-EVAL1Z |
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