Datasheet AD640 (Analog Devices) - 7

FabricanteAnalog Devices
DescripciónDC-Coupled Demodulating 120 MHz Logarithmic Amplifier
Páginas / Página20 / 7 — AD640–Typical AC Performance Characteristics. –2.5. +125. 30MHz. +25. …
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AD640–Typical AC Performance Characteristics. –2.5. +125. 30MHz. +25. –2.0. 60MHz. 90MHz. 120MHz. –55. –1.5. –1.0. ERROR IN dB. –0.5

AD640–Typical AC Performance Characteristics –2.5 +125 30MHz +25 –2.0 60MHz 90MHz 120MHz –55 –1.5 –1.0 ERROR IN dB –0.5

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AD640

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AD640–Typical AC Performance Characteristics –2.5 –2.5 +125
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C 30MHz +125 +25
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C
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C –2.0 60MHz –2.0 90MHz +25
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C 120MHz –55
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C –1.5 –1.5 +1 –55
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C –1.0 –1.0 0 +125
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C ERROR IN dB –0.5 –5 –1 +25
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C OUTPUT CURRENT – mA OUTPUT CURRENT – mA +125
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C –55
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C 0 AD640
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VS = 5 VOLTS 0 AD640 –2 TEMPERATURE = +25
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C FREQUENCY = 60MHz –55
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C 0.5 0.5 –50 –40 –30 –20 –10 0 –50 –40 –30 –20 –10 0 INPUT LEVEL – dBm INPUT LEVEL – dBm
Figure 10. AC Response at 30 MHz, 60 MHz, 90 MHz and Figure 13. Logarithmic Response and Linearity at 60 MHz, 120 MHz, vs. dBm Input (Sinusoidal Input) TA for TA = –55 ⴗC, +25 ⴗC, +125 ⴗC
1.0 90 89 88 0.95 87 86 0.90 85 84 83 SLOPE CURRENT – mA 0.85 INTERCEPT LEVEL – dBm 82 81 0.80 80 DC 30 60 90 120 150 0 10 20 30 40 50 60 70 80 90 100 110 120 FREQUENCY – MHz INPUT FREQUENCY – MHz
Figure 11. Slope Current, IY, vs. Input Frequency Figure 14. Intercept Level (dBm) vs. Frequency (Cascaded AD640s – Sinusoidal Input)
5µs 5µs 100 90 10 0% 20mV 20mV
Figure 12. Baseband Pulse Response of Single AD640, Figure 15. Baseband Pulse Response of Cascaded Inputs of 1 mV, 10 mV and 100 mV AD640s, Inputs of 0.2 mV, 2 mV, 20 mV and 200 mV –6– REV. D Document Outline AD640-SPECIFICATIONS DC Specifications AC Specifications Thermal Characteristics ABSOLUTE MAXIMUM RATINGS TYPICAL DC PERFORMANCE CHARACTERISTICS TYPICAL AC PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE