mc145146dw2 Lansdale Semiconductor, Inc., mc145146dw2 Datasheet - Page 11
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mc145146dw2
Manufacturer Part Number
mc145146dw2
Description
4?bit Data Bus Input Pll Frequency Synthesizer
Manufacturer
Lansdale Semiconductor, Inc.
Datasheet
1.MC145146DW2.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC145146DW2
Manufacturer:
FREESCALE
Quantity:
20 000
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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