cxa1786n Sony Electronics, cxa1786n Datasheet

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cxa1786n

Manufacturer Part Number
cxa1786n
Description
1.1ghz-band Pll Ic For Mobile Communications
Manufacturer
Sony Electronics
Datasheet

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For the availability of this product, please contact the sales office.
Block Diagram and Pin Configuration
Descriptions
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
• Maximum operating frequency
• Operating supply voltage range
• Ultra small 20-pin SSOP package
• Two types of phase comparator output:
Applications
such as cellular telephones
The CXA1786N is a frequency synthesizer PLL IC
Icc = 6.0mA (typ.)
0.3mA (typ.) in power saving mode
1.1GHz guaranteed
2.7 to 5.5V
For external charge pump
Two internal charge pumps
1.1GHz-band mobile communication equipment
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.
1.1GHz-band PLL IC for Mobile Communications
D
R
O
1
D
P
O
OSCO
OSCI
GND
2
D
V
FIN
NC
NC
Vp
LD
CC
O
1
10
1
3
4
6
7
8
9
2
5
Pulse swallow programmable counter
64/65
– 1 –
1
2-modulus
prescaler
Pulse Swallow
Counter 7bits
or
128/129
Structure
Absolute Maximum Ratings
• Supply voltage
• Operating temperature Topr
• Storage temperature
• Allowable power dissipation
Operating Condition
Charge
Pump 1
1
Bipolar silicon monolithic IC
Supply voltage
Reference Programmable
Counter 14bits
Programmable
Counter 11bits
CXA1786N
1-bit Latch
18-bit Shift Resister
Comparator
20 pin SSOP (Plastic)
Phase
18-bit Latch
14-bit Latch
Charge
Pump 2
1-bit Shift
Resister
Vcc
Tstg
P
Vcc
D
17
14
11
19
16
15
13
12
20
18
–65 to +150
–35 to +85
2.7 to 5.5
NC
TEST
D
FC
LAT
DATA
PS
CK
R
P
O
300
2
7
E93929A8Y
mW
°C
°C
V
V

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cxa1786n Summary of contents

Page 1

... PLL IC for Mobile Communications For the availability of this product, please contact the sales office. Descriptions The CXA1786N 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 ...

Page 2

... GND GND – 2 – CXA1786N Description Reference frequency signal input. VCO signal input. No connected. Reference frequency signal output. Oscillator is formed by connecting the crystal resonator between this pin and the OSCI pin; the oscillator signal is used as the reference frequency signal ...

Page 3

... High: 2.2V 17 TEST Low: 2.0V Equivalent circuit GND 17 – 3 – CXA1786N Description Power saving pin. Power saving mode when this pin is Low. Switching for the phases of phase comparator output and the output signals of counter (reference, programmable) output to the TEST pin. The signal output which is frequency-divided at the counter ...

Page 4

... Vcc = Vp = 2. –35°C to +85°C Vcc = Vp = 2. –35°C to +85° 0.1mA 0.1mA OL L Vcc Vcc GND except for GND IN – 4 – CXA1786N Min. Typ. Max. 5.84 8.7 360 510 100 1100 – 0.5 2 –1 1 – 2.18 70.3 500 0.7 – ...

Page 5

... GND except for PS IN Vcc = V = 5.5V, P – GND IN Vcc = V = 5.5V Vcc – 0.05 P Vcc = V = 5.5V, P – Vcc IN Vcc = V = 5.5V P Vcc = V = 5.5V, P – GND IN – 5 – CXA1786N Typ. Max. Unit V 1 µA 0.05 V –18.9 1 µ µA Vcc 0 µA –27.7 µ µA 0.05 V –34.7 1 µA ...

Page 6

... Frequency Counter OUT Oscilloscope 5. CXA1786N CXA1786N L.P.F. – 6 – CXA1786N Controller S.G. V 1000p V.C.O. Output ...

Page 7

... The control data consists of 16 bits for the reference counter and 19 bits for the pulse swallow programmable counter. The final bit of them is the identification code and the contents of data are discriminated by identifying the code. The frequency division value is composed of the binary values whose head is MSB as described on the next page. – 7 – CXA1786N ...

Page 8

... N: Frequency division value of 2-modulus pre-scaler (64 or 128) (M > Main counter value S: Swallow counter value (1) Data input timing 500ns 1 5 DATA (SW bit or MA bit LAT Data is read at the rising edge of CK 64/65-frequency division 128/129-frequency division C (C bit – 8 – CXA1786N ...

Page 9

... Table 1. Phase comparator and TEST Pin outputs FC: High or open Do1 ( > < High impedance fr: Output frequency of reference counter H: High fp: Output frequency of programmable counter L: Low FC: Low TEST Do1 ( TEST – 9 – CXA1786N ...

Page 10

... Make the input route of the RF signal from the VCO as short as possible. • Connect the Vcc and Vp pins to the ground respectively via the by-pass capacitors as short as possible because the frequency of signal used in this IC is higher. OSCI NC OSCO OSCI NC OSCO – 10 – CXA1786N and Co I and Co may be I ...

Page 11

... OSCI input frequency [MHz –35 –25 1000 7 Vcc = 100 2.7 3 – 11 – CXA1786N I vs Vcc Vcc [° 25° 5.5 V and Vp voltage [V] CC ...

Page 12

... This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 20PIN SSOP (PLASTIC 0.05 0.65 0.15 – 0.02 0.13 M 0.1 ± 0.1 0° to 10° DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT LEAD MATERIAL PACKAGE MASS – 12 – CXA1786N + 0.2 1.25 – 0.1 0.1 EPOXY RESIN SOLDER / PALLADIUM PLATING 42/COPPER ALLOY 0.1g ...

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