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ADA4857-2YCPZ-R2 数据表(PDF) 4 Page - Analog Devices |
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ADA4857-2YCPZ-R2 数据表(HTML) 4 Page - Analog Devices |
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4 / 20 page  ADA4857-1/ADA4857-2 Rev. 0 | Page 4 of 20 Parameter Conditions Min Typ Max Unit POWER SUPPLY Operating Range 4.5 10.5 V Quiescent Current 5 5.5 mA Quiescent Current (Power Down) PD ≥ VCC − 2 V 350 450 μA Positive Power Supply Rejection +VS = 4.5 V to 5.5 V, −VS = −5 V −59 −62 dB Negative Power Supply Rejection +VS = 5 V, −VS = −4.5 V to −5.5 V −65 −68 dB +5 V SUPPLY TA = 25°C, G = +2, RF = RG = 499 Ω, RL = 1 kΩ to midsupply, PD = no connect, unless otherwise noted. Table 2. Parameter Conditions Min Typ Max Unit DYNAMIC PERFORMANCE –3 dB Bandwidth (LFCSP/SOIC) G = +1, VOUT = 0.2 V p-p 595 800/750 MHz G = +1, VOUT = 2 V p-p 500/400 MHz G = +2, VOUT = 0.2 V p-p 360/300 MHz Full Power Bandwidth G = +1, VOUT = 2 V p-p, THD < −40 dBc 95 MHz Bandwidth for 0.1 dB Flatness (LFCSP/SOIC) G = +2, VOUT = 2 V p-p, RL = 150 Ω 50/40 MHz Slew Rate (10% to 90%) G = +1, VOUT = 2 V step 1500 V/μs Settling Time to 0.1% G = +2, VOUT = 2 V step 15 ns NOISE/HARMONIC PERFORMANCE Harmonic Distortion f = 1 MHz, G= +1, VOUT = 2 V p-p (HD2) −92 dBc f = 1 MHz, G= +1, VOUT = 2 V p-p (HD3) −90 dBc f = 10 MHz, G= +1, VOUT = 2 V p-p (HD2) −81 dBc f = 10 MHz, G= +1, VOUT = 2 V p-p (HD3) −71 dBc f = 50 MHz, G= +1, VOUT = 2 V p-p (HD2) −69 dBc f = 50 MHz, G= +1, VOUT = 2 V p-p (HD3) −55 dBc Input Voltage Noise f = 100 kHz 4.4 nV/√Hz Input Current Noise f = 100 kHz 1.5 pA/√Hz DC PERFORMANCE Input Offset Voltage ±1 ±4.2 mV Input Offset Voltage Drift 4.6 μV/°C Input Bias Current −1.7 −3.3 μA Input Bias Current Drift 24.5 nA/°C Input Bias Offset Current 50 nA Open-Loop Gain VOUT = 1.25 V to 3.75 V 57 dB PD (Power-Down) Pin PD Input Voltage Chip powered down ≥(VCC − 2) V Chip enabled ≤(VCC − 4.2) V Turn-Off Time 50% off PD to <10% of final VOUT, VIN = 1 V, G = +2 38 μs Turn-On Time 50% off PD to <10% of final VOUT, VIN = 1 V, G = +2 30 ns PD Pin Leakage Current Chip enable 8 μA Chip powered down 30 μA INPUT CHARACTERISTICS Input Resistance Common mode 8 MΩ Differential mode 4 MΩ Input Capacitance Common mode 2 pF Input Common-Mode Voltage Range 1 to 4 V Common-Mode Rejection Ratio VCM = 2 V to 3 V −76 −84 dB |
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