MC145152-2 Freescale Semiconductor, Inc, MC145152-2 Datasheet - Page 11

• Manufacturer Part Number: MC145152-2
• Description: Parallel-input Pll Frequency Synthesizer
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
(ON-CHIP OSC.
NOTES:
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
4. N
5. High frequency prescalers may be used for higher frequency VCO and f
6. The φ
+ V
implementations.
additional information. The φ
input range of the op amp used in the combiner/loop filter.
R
total
= 7.5 kHz; ÷ R = 2048.
= N • 64 + A = 27501 to 28166; N = 429 to 440; A = 0 to 63.
R
and φ
OSC
V
V
N9
DD
SS
Figure 8. 666-Channel Computer-Controlled, Mobile Radiotelephone Synthesizer
OSC
V
in
X2
outputs are fed to an external combiner/loop filter. See the Phase-Locked Loop - Low-Pass Filter Design page for
out
CHANNEL PROGRAMMING
RA2
MC145152-2
NO CONNECTS
“1"
R
and φ
MC145151-2 and MC145152-2 Technical Data, Rev. 5
RA1
“1"
N0
V
outputs swing rail-to-rail. Therefore, the user should be careful not to exceed the common mode
A5
RA0
for 800 MHz Cellular Radio Systems
“1"
LD
MC
A0
φ
φ
f
MC145152-2 Parallel-Input (Interfaces with Dual-Modulus Prescalers)
R
V
in
LOCK DETECT SIGNAL
R1
R1
RECEIVER 2ND L.O.
30.720 MHz
R2
C
R2
-
+
ref
C
NOTE 6
÷ 64/65 PRESCALER
VCO
NOTE 5
825.030 → 844.980 MHz
RECEIVER FIRST L.O.
(30 kHz STEPS)
TRANSMITTER
MODULATION
NOTE 5
TRANSMITTER SIGNAL
825.030 → 844.980 MHz
X4
(30 kHz STEPS)
NOTE 5
X4
11