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CXA1787N Datasheet

  • CXA1787N

  • 2GHz-band PLL IC for Mobile Communications

  • 178.34KB

  • 13頁

  • SONY   SONY

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CXA1787N
2GHz-band PLL IC for Mobile Communications
Descriptions
The CXA1787N is a frequency synthesizer PLL IC
developed for use in mobile communication systems.
This IC has low current consumption, small package
and is suitable for portable sets of cellular telephone
and others.
Features
鈥?/div>
Low current consumption
Icc = 8.0mA (typ.)
0.3mA (typ.) in power saving mode
鈥?/div>
Maximum operating frequency
1.8GHz guaranteed
鈥?/div>
Operating supply voltage range
2.7 to 5.5V
鈥?/div>
Ultra small 20-pin SSOP package
鈥?/div>
Two types of phase comparator output:
For external charge pump
蠁R
蠁P
Two internal charge pumps D
O
1
D
O
2
Applications
1.1GHz-band mobile communication equipment
such as cellular telephones
20 pin SSOP (Plastic)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
鈥?/div>
Supply voltage
Vcc
鈥?/div>
Operating temperature Topr
鈥?/div>
Storage temperature
Tstg
鈥?/div>
Allowable power dissipation
P
D
Operating Condition
Supply voltage
7
鈥?5 to +85
鈥?5 to +150
300
V
擄C
擄C
mW
Vcc
2.7 to 5.5
V
Block Diagram and Pin Configuration
OSCI
1
20
蠁R
NC
2
Phase
Comparator
19
NC
OSCO
3
18
蠁P
Vp
4
Reference Programmable
Counter 14bits
17
TEST
V
CC
5
16
D
O
2
D
O
1
6
Charge
Pump 1
Charge
Pump 2
15
FC
GND
7
14
LAT
LD
8
Pulse Swallow
Counter 7bits
Programmable
Counter 11bits
13
DATA
NC
9
1-bit Latch 14-bit Latch
18-bit Shift Resister
1-bit Shift
Resister
12
PS
FIN
10
2-modulus
prescaler
1
1
or
64/65
128/129
Pulse swallow programmable counter
11
CK
18-bit Latch
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
鈥?鈥?/div>
E94Z22A8Y

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