AD608(RevB) Просмотр технического описания (PDF) - Analog Devices
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AD608 Datasheet PDF : 12 Pages
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AD608
PRUP IN
U1A
TRIGGER
U1B
4.7k
47kΩ
VPOS
51.1Ω
1 VPS1
0.1µF
2 COM1
0.1µF
3 LOHI
51.1Ω
1nF
4 COM2
5 RFHI
1nF
6 RFLO
PRUP 16
LMOP 15
VPS2 14
FDBK 13
COM3 12
RSSI 11
7 MXOP
332Ω
8 VMID
IFLO 10
IFHI 9
AD608
0.1µF
LMOP OUT
18nF
100Ω
10nF
RSSI OUTPUT
0.1µF
301Ω
0.1µF
332Ω
IF INPUT
54.9Ω
U1 – 74HC00
Figure 1. IF Test Board Schematic
VPOS
LO IN
51.1Ω
RF IN
51.1Ω
0.1µF
1 VPS1
2 COM1
1nF
3 LOHI
4 COM2
1nF
5 RFHI
6 RFLO
1nF
7 MXOP
47kΩ
PRUP 16
LMOP 15 NC
VPS2 14
FDBK 13
COM3 12
RSSI 11 NC
IFLO 10
18nF
18nF
100Ω
10nF
8 VMID
IFHI 9
332Ω
AD608
0.1µF
0.1µF
332Ω
301Ω
54.9Ω
IF OUT
NC = NO CONNECT
Figure 2. Mixer Test Board Schematic
25.0
24.5
24.0
23.5
23.0
22.5
22.0
0 50 100 150 200 250 300 350 400 450 500
RF FREQUENCY – MHz
Figure 3. Mixer Conversion Gain vs.
Frequency
3.0
+85
2.5
+25
–25
2.0
1.5
1.0
0.5
0
–80 –70 –60 –50 –40 –30 –20 –10 0 10
INPUT POWER – dBm
Figure 6. IF RSSI Output vs.
Temperature (3 V Supply)
0
–1
–2
–3
–4
–5
–6
–7
–8
0 10 20 30 40 50 60 70 80
IF FREQUENCY – MHz
3.0
2.5
2.0
5V
1.5
1.0
3V
0.5
0
–80 –70 –60 –50 –40 –30 –20 –10 0 10
INPUT POWER AT IFHI – dBm
Figure 4. Mixer IF Port Bandwidth
Figure 5. IF RSSI Output vs. Supply
Voltage (Ambient Temperature)
FLUKE 6082A
SYNTHESIZER
10.7 MHz
IF TEST BOARD
IFHI
RSSI
VPOS
DMM
HP34401A
DCPS 3V
HP3366A
Figure 7. Test Circuit for IF RSSI Out-
put vs. Supply Voltage (Ambient Tem-
perature) (Figure 5) and IF RSSI
Output vs. Temperature (3 V Supply)
(Figure 6) and RSSI Error vs. Input
Power (Figure 8)
4.0
3.0
2.0
1.0
3V
0
5V
–1.0
–2.0
–3.0
–4.0
–80 –70 –60 –50 –40 –30 –20 –10 0 10
INPUT POWER – dBm
Figure 8. RSSI Error vs. Input Power
–4–
REV. B
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