mc145146dw2 Lansdale Semiconductor, Inc., mc145146dw2 Datasheet - Page 11

• Manufacturer Part Number: mc145146dw2
• Description: 4?bit Data Bus Input Pll Frequency Synthesizer
• Manufacturer: Lansdale Semiconductor, Inc.

ML145146
Page 11 of 12
NOTES:
NOTES:
(ON–CHIP OSC.
(ON–CHIP OSC.
FREQUENCY
CHOICE OF
OPTIONAL)
FREQUENCY
REF. OSC.
1. Reciever I.F = 10.7 MHz, low side injection.
2. Duplex operation with 5 MHz receive/transmit separation.
3. f R = 25 kHz, + R chosen to correspond with desired reference oscillator frequency.
4. N total = 17,733 to 17,758 = N • P + A; N = 227, A = 5 to 30 for P = 64.
CHOICE OF
1. Receiver 1st I.F. = 45 MHz, low side injection; Receiver 2nd I.F. = 11.7 MHz, low side injection.
2. Duplex operation with 45 MHz receive/transmit separation.
3. f R = 7.5 kHz, + R = 1480.
4. N total = N • 32 + A = 27,501 to 28,166: N = 859 to 880; A = 0 to 31.
5. Only one implementation is shown. Various other configurations and dual–modulus prescaling values to ÷128/÷129 are possible.
OPTIONAL)
REF. OSC.
Figure 13. Synthesizer for UHF Mobil Radio Telephone Channels Demonstrates Use of the ML145146 in
7
6
4
7
6
4
OSC in
V DD
V SS
Microprocessor/Microcomputer Controlled Systems Operating to Several Hundred MHz
D3 D2 D1 D0 A2 A1 A0
Figure 14. 666 Channel, Computer Controlled, Mobile Radio Telephone Synthesizer for
OSC in
V DD
V SS
OSC out
8
D3 D2 D1 D0 A2 A1 A0
OSC out
TO SHARED CONTROLLER BUS
X3
19
8
19
TO SHARED CONTROLLER BUS
20
20
1
1
ML145146
ML145146
f R
2
2
f R
18
11
11
f V
f V
10
15
10
800 MHz Cellular Radio Systems
LD
9
CONTROLLER
5
SELECT TO
13
9
LD
CONTROL
CONTROLLER
SELECT TO
CONTROL
ST
CHIP
PD out
www.lansdale.com
MOD
ST
CHIP
12
PD out
φ R
MOD
φ V
12
f in
φ R
φ V
f in
}
17
16
14
3
5
3
17
16
14
}
}
FOR USE WITH EXTERNAL
PHASE DETECTOR (OPTIONAL)
}
FOR USE WITH EXTERNAL
PHASE DETECTOR (OPTIONAL)
LOCK DETECT
CHOICE OF DETECTOR
LOCK DETECT
CHOICE OF DETECTOR
SIGNAL
ERROR SIGNALS
+32/+32 DUAL MODULUS PRESCALER
SIGNAL
ERROR SIGNALS
MC10131
DUAL F/F
FILTER
LOOP
FILTER
LOOP
ML12034 PRESCALER
443.325
VCO
RECEIVER LO.
(25 kHz STEPS)
VCO
33,300 MHZ
÷8/÷9 PRESCALER
RECEIVER
2ND, L.O.
443.950 MHz
825.030 844.980 MHZ
ML12011
RECEIVER FIRST L.O.
TRANSMITTER
AND 15.7 MHz
(30 KHz STEPS)
MODULATION
X4
OFFSET
LANSDALE Semiconductor, Inc.
TRANSMITTER
MODULATION
459.025 – 459.650 MHz
825.030 844.880 MHz
TRANSMITTER SIGNAL
TRANSMITTER SIGNAL
(25 kHz STEPS)
(30 kHz STEPS)
X4
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