參數(shù)資料
型號(hào): AD608
廠商: Analog Devices, Inc.
英文描述: Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem(低功耗混合器/Limiter/RSSI 3V接收器IF子系統(tǒng))
中文描述: 低功耗混合機(jī)/限制器/ RSSI的3 V接收機(jī)中頻子系統(tǒng)(低功耗混合器/限幅/ RSSI的3V的接收器中頻子系統(tǒng))
文件頁(yè)數(shù): 4/12頁(yè)
文件大小: 201K
代理商: AD608
REV. B
–4–
AD608
RF FREQUENCY – MHz
C
25.0
23.5
22.0
0
50
500
100 150 200 250 300 350 400 450
24.5
24.0
23.0
22.5
Figure 3. Mixer Conversion Gain vs.
Frequency
PRUP IN
VPOS
51.1
51.1
1nF
0.1μF
1nF
332
0.1μF
332
301
54.9
IF INPUT
0.1μF
10nF
RSSI OUTPUT
100
18nF
0.1μF
LMOP OUT
TRIGGER
4.7k
U1 – 74HC00
0.1μF
U1A
U1B
47k
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AD608
VPS1
COM1
RFHI
RFLO
MXOP
LOHI
COM2
VMID
PRUP
LMOP
COM3
RSSI
IFLO
VPS2
FDBK
IFHI
Figure 1. IF Test Board Schematic
INPUT POWER – dBm
R
3.0
0
–80 –70
10
–60 –50 –40
–20 –10
0
–30
2.5
2.0
1.5
1.0
0.5
+85
+25
–25
Figure 6. IF RSSI Output vs.
Temperature (3 V Supply)
IF FREQUENCY – MHz
R
0
–8
0
10
80
20
30
40
50
60
70
–1
–4
–5
–6
–7
–2
–3
Figure 4. Mixer IF Port Bandwidth
INPUT POWER AT IFHI – dBm
R
3.0
0
–80 –70
10
–60 –50 –40
–20 –10
0
–30
2.5
2.0
1.5
1.0
0.5
5V
3V
Figure 5. IF RSSI Output vs. Supply
Voltage (Ambient Temperature)
IFHI
VPOS
RSSI
IF TEST BOARD
10.7 MHz
FLUKE 6082A
SYNTHESIZER
DCPS
3V
HP3366A
DMM
HP34401A
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)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AD608
VPS1
COM1
RFHI
RFLO
MXOP
LOHI
COM2
VMID
PRUP
LMOP
COM3
RSSI
IFLO
VPS2
FDBK
IFHI
VPOS
LO IN
RF IN
IF OUT
NC
NC
0.1μF
1nF
51.1
1nF
332
301
0.1μF
54.9
51.1
1nF
0.1μF
332
10nF
100
18nF
18nF
47k
NC = NO CONNECT
Figure 2. Mixer Test Board Schematic
INPUT POWER – dBm
R
4.0
–4.0
–80 –70
10
–60 –50 –40
–20 –10
0
–30
3.0
0
–1.0
–2.0
–3.0
2.0
1.0
5V
3V
Figure 8. RSSI Error vs. Input Power
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