MC145151 Motorola, MC145151 Datasheet - Page 8

• Manufacturer Part Number: MC145151
• Description: Parallel-Input PLL Frequency Synthesizer
• Manufacturer: Motorola

MC145151–2 through MC145158–2
8
NOTES:
(ON–CHIP OSC.
15.360 MHz
OPTIONAL)
REF. OSC.
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 receiver/transmit separation.
3. f R = 7.5 kHz;
4. N total = N
5. MC145158–2 may be used where serial data entry is desired.
6. High frequency prescalers (e.g., MC12018 [520 MHz] and MC12022 [1 GHz]) may be used for higher frequency VCO and f ref
7. The R and V outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop — Low–Pass Filter Design page for
+ V
implementations.
additional information. The R and V outputs swing rail–to–rail. Therefore, the user should be careful not to exceed the common mode
input range of the op amp used in the combiner/loop filter.
OSC in
V DD
V SS
N9

OSC out
64 + A = 27501 to 28166; N = 429 to 440; A = 0 to 63.
X2
Figure 2. 666–Channel, Computer–Controlled, Mobile Radiotelephone Synthesizer
R = 2048.
CHANNEL PROGRAMMING
RA2
MC145152–2
“1”
NOTE 5
NO CONNECTS
RA1
“1”
N0
A5
RA0
“1”
for 800 MHz Cellular Radio Systems
LD
MC
A0
f in
R
V
LOCK DETECT SIGNAL
R1
R1
RECEIVER 2ND L.O.
30.720 MHz
MC145152–2 Data Sheet Continued on Page 23
R2
C
R2
–
+
NOTE 7
C
64/65 PRESCALER
VCO
MC12017
NOTE 6
825.030
RECEIVER FIRST L.O.
(30 kHz STEPS)
TRANSMITTER
MODULATION
NOTE 6
X4
844.980 MHz
825.030
TRANSMITTER SIGNAL
(30 kHz STEPS)
MOTOROLA
844.980 MHz
NOTE 6
X4