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PDF CXA1787N Data sheet ( Hoja de datos )
| Número de pieza | CXA1787N | |
| Descripción | 2GHz-band PLL IC for Mobile Communications | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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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
• Low current consumption
Icc = 8.0mA (typ.)
0.3mA (typ.) in power saving mode
• Maximum operating frequency
1.8GHz guaranteed
• Operating supply voltage range
2.7 to 5.5V
• Ultra small 20-pin SSOP package
• Two types of phase comparator output:
For external charge pump φR φP
Two internal charge pumps DO1 DO2
Applications
1.1GHz-band mobile communication equipment
such as cellular telephones
20 pin SSOP (Plastic)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
Vcc
• Operating temperature Topr
• Storage temperature Tstg
• Allowable power dissipation
PD
7V
–35 to +85 °C
–65 to +150 °C
300 mW
Operating Condition
Supply voltage
Vcc 2.7 to 5.5
V
Block Diagram and Pin Configuration
OSCI 1
20 φR
NC 2
OSCO 3
Phase
Comparator
19 NC
18 φP
Vp 4
VCC 5
DO1 6
Reference Programmable
Counter 14bits
Charge
Pump 1
Charge
Pump 2
17 TEST
16 DO2
15 FC
GND 7
14 LAT
LD 8
NC 9
FIN 10
Pulse Swallow Programmable
Counter 7bits Counter 11bits
2-modulus
prescaler
1 or 1
64/65 128/129
1-bit Latch 14-bit Latch
18-bit Shift Resister
1-bit Shift
Resister
18-bit Latch
Pulse swallow programmable counter
13 DATA
12 PS
11 CK
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.
–1–
E94Z22A8Y
1 page  
CXA1787N
FC
CK
DATA
LAT
PS
PS
FC
Item
High input voltage
High input current
Low input voltage
Low input current
High input voltage
High input current
Low input voltage
Low input current
Low input current
High input voltage
High input current
Low input voltage
Low input current
Symbol
Conditions
Min.
VIH Vcc – 0.05
IIH VIN = Vcc
–1
VIL
IIL VIN = GND
–50
VIH Vcc = VP = 5.5V
Vcc × 0.7
IIH
Vcc = VP = 5.5V,
VIN = Vcc
–1
VIL Vcc = VP = 5.5V
IIL
Vcc = VP = 5.5V,
VIN = GND except for PS
–20
IIL
Vcc = VP = 5.5V,
VIN = GND
–60
VIH Vcc = VP = 5.5V
Vcc – 0.05
IIH
Vcc = VP = 5.5V,
VIN = Vcc
–1
VIL Vcc = VP = 5.5V
IIL
Vcc = VP = 5.5V,
VIN = GND
–60
Typ.
–20
0
–30
–35
Max.
1
0.05
1
Unit
V
µA
V
µA
V
1 µA
Vcc × 0.3 V
1 µA
µA
V
1 µA
0.05 V
1 µA
–5–
5 Page 
Example of Representative Characteristics
FIN input level vs. Fin input frequency
10 VCC = VP = 2.7V
Ta = 25°C
0
–10
–20
–30
–40
10 100 1000
Fin input frequency [MHz]
2500
FIN maximum operating frequency vs. Ta
CXA1787N
2450
VCC = VP = 2.7V
PIN = –10dBm
2400
–35
0 25 50
Ta [°C]
85
– 11 –
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet CXA1787N.PDF ] | |
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