AD608
Rev. C | Page 6 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
RF FREQUENCY (MHz)
MIXER CONVERSION GAIN (dB)
25.0
23.5
22.0
500500
100 150 200 250 300 350 400 450
24.5
24.0
23.0
22.5
07886-005
Figure 3. Mixer Conversion Gain vs. RF Frequency
IF FREQUENCY (MHz)
MIXER RESPONSE (dB)
0
–8
80100
20 30 40 50 60 70
–1
–4
–5
–6
–7
–2
–3
07886-006
Figure 4. Mixer IF Port Bandwidth
INPUT POWER AT IFHI (dBm)
RSSI OUTPUT (V)
3.0
0
10–70–80
–60 –50 –40 0–20 –10–30
2.5
2.0
1.5
1.0
0.5
5V
3V
7886-007
Figure 5. IF RSSI Output vs. Input Power at IFHI and Supply Voltage,
Ambient Temperature (See Figure 15)
INPUT POWER (dBm)
RSSI OUTPUT (V)
3.0
0
2.5
2.0
1.5
1.0
0.5
+85°C
+25°C
–25°C
10–70–80 –60 –50 –40 0–20 –10–30
7886-008
Figure 6. IF RSSI Output vs. Input Power and Temperature,
3 V Supply (See Figure 15)
INPUT POWER (dBm)
RSSI ERROR (dB)
4
–4
10–80 –70 –50 0–60 –40 –20 –10–30
3
0
–1
–2
–3
2
1
5V
3V
07886-010
Figure 7. RSSI Error vs. Input Power
(See Figure 15)
PRUP RSSI
7886-011
100ns/DIV
800mV/DIV
100ns/DIV
1V/DIV
Figure 8. RSSI Power-Up Response
(See Figure 19)
