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AD641-EB 数据表(PDF) 2 Page - Analog Devices |
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AD641-EB 数据表(HTML) 2 Page - Analog Devices |
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2 / 16 page  REV. C –2– AD641–SPECIFICATIONS ELECTRICAL CHARACTERISTICS AD641A AD641S Parameter Conditions Min Typ Max Min Typ Max Units TRANSFER FUNCTION1 (IOUT = IY LOG |VIN/VX|for VIN = 0.75 mV to ±200 mV dc) LOG AMPLIFIER PERFORMANCE 3 dB Bandwidth 250 250 MHz Voltage Compliance Range –0.3 +VS – 1 –0.3 +VS – 1 V Slope Current, IY 0.98 1.00 1.02 0.98 1.00 1.02 mA Accuracy vs. Temperature 0.002 0.002 %/ °C Over Temperature TMIN to TMAX 0.98 1.02 mA Intercept dBm 250 MHz –40.84 –40.43 –39.96 –40.84 –40.43 –39.96 dBm Over Temperature TMIN to TMAX, 250 MHz –40.59 –39.47 dBm Zero Signal Output Current2 –0.2 –0.2 mA ITC Disabled Pin 8 to COM –0.27 –0.27 mA Maximum Output Current 2.3 2.3 mA DYNAMIC RANGE Single Configuration 44 44 dB Over Temperature TMIN to TMAX 40 38 dB Dual Configuration 58 58 dB Over Temperature TMIN to TMAX 52 52 dB LOG CONFORMANCE f = 250 MHz Single Configuration –44 dBm to 0 dBm ±0.5 ±2.0 ±0.5 ±2.0 dB Over Temperature –42 dBm to –4 dBm; TMIN to TMAX ±1.0 ±2.5 dB –42 dBm to –2 dBm, TMIN to TMAX ±1.0 ±2.5 Dual Configuration S: –60 dBm to –2 dBm; ±0.5 ±2.0 ±0.5 ±2.0 dB Over Temperature A: –56 dBm to –4 dBm, TMIN to TMAX ±1.0 ±2.5 ±1.0 ±2.5 dB LIMITER CHARACTERISTICS Flatness –44 dBm to 0 dBm @ 10.7 MHz ±1.6 ±1.6 dB Phase Variation –44 dBm to 0 dBm @ 10.7 MHz ±2.0 ±2.0 Degrees INPUT CHARACTERISTICS Input Resistance Differential 500 500 k Ω Input Offset Voltage Differential 50 200 50 200 µV vs. Temperature 0.8 0.8 µV/°C Over Temperature TMIN to TMAX 300 µV vs. Supply 22 µV/V Input Bias Current 7 25 7 25 µA Input Bias Offset 11 µA Common Mode Input Range –2 +0.3 –2 +0.3 V SIGNAL INPUT (Pins 1, 20) Input Capacitance Either Pin to COM 2 2 pF Noise Spectral Density 1 kHz to 10 MHz 2 2 nV/ √Hz Tangential Sensitivity BW = 100 MHz –72 –72 dBm INPUT ATTENUATOR (Pins 2, 3, 4, 5 & 19) Attenuation 3 Pins 5 to Pin 19 20 20 dB Input Resistance Pins 5 to 3/4 300 300 Ω APPLICATION RESISTORS (Pins 15, 16, 17) 0.995 1.000 1.005 0.995 1.000 1.005 k Ω OUTPUT CHARACTERISTICS (Pins 10, 11) Peak Differential Output 4 ±180 ±180 mV Output Resistance Either Pin to COM 75 75 Ω Quiescent Output Voltage Either Pin to COM –90 –90 mV POWER SUPPLY Voltage Supply Range ±4.5 ±7.5 ±4.5 ±7.5 V Quiescent Current +VS (Pin 12) TMIN to TMAX 915 9 15 mA –VS (Pin 7) TMIN to TMAX 35 60 35 60 mA NOTES 1Logarithms to base 10 are used throughout. The response is independent of the sign of V IN. 2The zero-signal current is a function of temperature unless internal temperature compensation (ITC) pin is grounded. 3Attenuation ratio trimmed to calibrate intercept to 10 mV when in use. It has a temperature coefficient of +0.3%/ °C. 4The fully limited signal output will appear to be a square wave; its amplitude is proportional to absolute temperature. Specifications subject to change wi thout notice. (VS = 5 V; TA = +25 C, unless otherwise noted) |
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