MAX2511EEI Maxim Integrated Products, MAX2511EEI Datasheet - Page 14

• Manufacturer Part Number: MAX2511EEI
• Description: RF Transceiver IF Txr w/Limitr RSSI
• Manufacturer: Maxim Integrated Products

Low-Voltage IF Transceiver
with Limiter and RSSI
Table 2. Recommended Values for L1
14
Figure 4. Overdriving the On-Chip Oscillator
Figure 3. Oscillator Tank Schematic
______________________________________________________________________________________
200 to 300
300 to 400
400 to 500
f
LO
(MHz)
C
C
P
P
L1 (µH)
8.2
18
12
TANK
TANK
TANK
TANK
L1
ADJUST R FOR BEST RETURN LOSS AT SIGNAL SOURCE
R = 200
C1
Table 3. Rx Input Impedance
FREQUENCY
(MHz)
C2 = C3
100
200
300
400
500
600
C2
C3
IMPEDANCE
MINI CIRCUITS
274-j226
131-j186
SERIES
79-j138
58-j105
10k
10k
10k
48-j82
43-j62
TC4-1
( )
VCO VOLTAGE
FROM PLL
EQUIVALENT PARALLEL
R ( )
460
395
320
248
188
132
IMPEDANCE
50
SIGNAL SOURCE
C (pF)
2.85
2.86
2.9
2.9
2.9
2.9