AD8309 Analog Devices, AD8309 Datasheet - Page 5

• Manufacturer Part Number: AD8309
• Description: 5 - 500 Mhz, 100 DB Demodulating Logarithmic Amplifier With Limiter Output
• Manufacturer: Analog Devices

Figure 7. RSSI Output vs. Input Level, 100 MHz Sine Input,
at T
REV. B
Figure 8. RSSI Output vs. Input Level, at T
Frequencies of 5 MHz, 50 MHz, 100 MHz and 200 MHz
Figure 9. RSSI Output vs. Input Level, at T
Frequencies of 300 MHz, 400 MHz and 500 MHz
A
= –40 C, +25 C and +85 C, Single-Ended Input
2.5
2.0
1.5
1.0
0.5
2.5
2.0
1.5
1.0
0.5
2.5
2.0
1.5
1.0
0.5
–100
–100
–100
0
0
0
T
A
T
= +85 C
A
–80
–80
–80
= +25 C
–60
–60
–60
T
INPUT LEVEL – dBm Re 50
INPUT LEVEL – dBm Re 50
INPUT LEVEL – dBm Re 50
A
= –40 C
–40
–40
–40
–20
–20
–20
0
0
0
A
A
20
20
20
= +25 C, for
= +25 C, for
100MHz
50MHz
200MHz
5MHz
300MHz
400MHz
500MHz
40
40
40
–5–
Figure 11. Log Linearity of RSSI Output vs. Input Level, at
T
and 200 MHz
100 MHz Sine Input, at T
500 MHz
A
Figure 10. Log Linearity of RSSI Output vs. Input Level,
Figure 12. Log Linearity of RSSI Output vs. Input Level,
at T
= +25 C, for Frequencies of 5 MHz, 50 MHz, 100 MHz
A
= +25 C, for Frequencies of 300 MHz, 400 MHz and
–1
–2
–3
–4
–5
–1
–2
–3
–4
–5
–1
–2
–3
–4
–5
–100
5
4
3
2
1
0
5
4
3
2
1
0
5
4
3
2
1
0
–90
–90
–80 –70 –60 –50 –40 –30 –20 –10
–80 –70 –60 –50 –40 –30 –20 –10
–80
100MHz
300MHz
5MHz
500MHz
50MHz
–60
INPUT LEVEL – dBm Re 50
INPUT LEVEL – dBm Re 50
INPUT LEVEL – dBm Re 50
400MHz
200MHz
A
–40
= –40 C, +25 C, and +85 C
DYNAMIC RANGE
300MHz
400MHz
500MHz
DYNAMIC RANGE
5MHz
50MHz
100MHz
200MHz
–20
T
A
T
= +25 C
A
0
= –40 C
0
0
T
90
65
66
A
85
91
97
96
1dB
AD8309
= +85 C
1dB
10
10
20
102
100
100
93
99
103
102
20
20
3dB
3dB
30
30
40