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MC145151-2 Scheda tecnica(PDF) 11 Page - Freescale Semiconductor, Inc

Il numero della parte MC145151-2
Spiegazioni elettronici  PLL Frequency Synthesizers (CMOS)
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC145151-2 Scheda tecnica(HTML) 11 Page - Freescale Semiconductor, Inc

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MC145152-2 Parallel-Input (Interfaces with Dual-Modulus Prescalers)
MC145151-2 and MC145152-2 Technical Data, Rev. 5
Freescale Semiconductor
11
Figure 8. 666-Channel Computer-Controlled, Mobile Radiotelephone Synthesizer
for 800 MHz Cellular Radio Systems
NOTES:
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. fR = 7.5 kHz; ÷ R = 2048.
4. Ntotal = N • 64 + A = 27501 to 28166; N = 429 to 440; A = 0 to 63.
5. High frequency prescalers may be used for higher frequency VCO and fref
implementations.
6. The
φ
R and φV outputs are fed to an external combiner/loop filter. See the Phase-Locked Loop - Low-Pass Filter Design page for
additional information. The
φ
R and φV 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.
LOCK DETECT SIGNAL
R1
+
RECEIVER FIRST L.O.
825.030
→ 844.980 MHz
(30 kHz STEPS)
÷ 64/65 PRESCALER
NOTE 5
MC145152-2
MC
LD
A0
A5
N9
OSCin
VDD
VSS
OSCout
RA2
RA1
φ
R
φ
V
fin
-
VCO
RA0
N0
+ V
R1
R2
C
R2
C
“1"
“1"
“1"
CHANNEL PROGRAMMING
REF. OSC.
15.360 MHz
(ON-CHIP OSC.
OPTIONAL)
X2
X4
NOTE 5
X4
NOTE 5
TRANSMITTER
MODULATION
TRANSMITTER SIGNAL
825.030
→ 844.980 MHz
(30 kHz STEPS)
RECEIVER 2ND L.O.
30.720 MHz
NOTE 6
NO CONNECTS


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