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AD641A Fiches technique(PDF) 5 Page - Analog Devices

No de pièce AD641A
Description  250 MHz Demodulating Logarithmic Amplifier
Download  16 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD641A Fiches technique(HTML) 5 Page - Analog Devices

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REV. C
AD641
–5–
Typical AC Performance Characteristics–
INPUT LEVEL – dBm
–2.25
–2.00
0.25
2
–48 –44 –40
–4
–1.25
–0.50
–0.25
0.00
–1.75
–1.50
–0.75
–1.00
–52
–36 –32 –28 –24 –20 –16 –12 –8
0
50MHz
150MHz
190MHz
210MHz
250MHz
Figure 10. AC Response at 50 MHz, 150 MHz, 190 MHz,
210 MHz at 250 MHz, vs. dBm Input (Sinusoidal Input)
INPUT FREQUENCY – MHz
87.5
70.0
50
250
100
150
170
190
210
230
85.0
80.0
77.5
75.0
72.5
82.5
Figure 11. Intercept Level (dBm) vs. Frequency (Cascaded
AD641s—Sinusoidal Input)
Figure 12. Baseband Pulse Response of Single AD641,
Inputs of 1 mV, 10 mV and 100 mV
INPUT LEVEL – dBm
–2.00
–1.75
0.50
2
–48 –44 –40
–4
–1.00
–0.25
–0.00
0.25
–1.50
–1.25
–0.50
–0.75
–52
–36 –32 –28 –24 –20 –16 –12 –8
0
+25 C
+125 C
–55 C
+25 C
+125 C
–55 C
OUTPUT
+25 C
+125 C
–55 C
+125 C
ERROR
+25 C
–55 C
5
4
3
2
1
0
–1
–2
–3
–4
–5
Figure 13. Logarithmic Response and Linearity at
200 MHz, TA for TA = –55°C, +25°C, +125°C
INPUT FREQUENCY – MHz
1.0
0.95
0.75
50
250
150
190
210
0.90
0.85
0.80
Figure 14. Slope Current, IY, vs. Input Frequency
10
0%
5µs
5µs
20mV
20mV
100
90
Figure 15. Baseband Pulse Response of Cascaded AD641s
at Inputs of 0.2 mV, 2 mV, 20 mV and 200 mV


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