Sony CXA3099N Datasheet

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E95Y24A8Z

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.

Absolute Maximum Ratings

• Supply voltage VCC 7.0 V

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –65 to +150 °C

• Allowable power dissipation PD 312 mW

Operating Condition

Supply voltage VCC1 1.1 to 4.0 V

Description

The CXA3099N is a low current consumption FM
IF amplifier which employs the newest bipolar
process. It is suitable for M-ary FSK pagers.

Features

• Low current consumption: 590 µA

(typ. at VCC = 1.4 V)

• Low voltage operation: VCC = 1.1 to 4.0 V

• Small package 16-pin SSOP

• Needless of IF decoupling capacitor

• Reference power supply for operational amplifier

and comparator

• IF input, VCC standard

Applications

M-ary FSK pagers

Structure

Bipolar silicon monolithic IC

IF Amplifier for M-ary FSK Pagers

16 pin SSOP (Plastic)

CXA3099N

For the availability of this product, please contact the sales office.

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CXA3099N

RSSIDEV COMP

VCC REG OUT REG CONT LVA OUT NRZ OUT CHARGE DEV OUT RSSI

LPF OUTLPF INDET OUTQUADFSK REFBSGNDIF IN

78k

R2

22k

R1

GND

REG

IF LIM

101112131416

9

15

2 3 4 5 6 71 8

CHARGE

QUAD DET

VB REG NRZ COMP

LVA

Block Diagram and Pin Configuration

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CXA3099N

Pin Description

Pin
No.

Symbol Pin voltage Equivalent circuit Description

1

2

3

4

5

6

IF IN

GND

B.S.

FSK REF

QUAD

DET OUT

1.4 V

—

—

0.2 V

1.4 V

0.2V

IF limiter amplifier input.

Ground.

Controls the battery saving.
Setting this pin low suspends the
operation of IC. (Applied voltage
range: –0.5 V to +7.0 V)

Connects the capacitor that
determines the low cut-off
frequency for the entire system.

Connects the phase shifter of FM
detector circuit.

FM detector output.

VCC

1.5k

GND

1.5k

20k 20k

1

72

40k

140k

GND

3

VCC

GND

72

4

VCC

22k

GND

20p

20k

5

VCC

GND

50p

55k

72

6

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CXA3099N

Pin

No.

Symbol Pin voltage Equivalent circuit Description

7

8

9

10
12
13

11

LPF IN

LPF OUT

RSSI

DEV OUT
NRZ OUT

LVA OUT

CHARGE

0.2 V

0.2 V

0 V

—
—
—

0 V

Operational amplifier input.

Level comparator and NRZ
comparator inputs. Output for
operational amplifier is
connected.

RSSI circuit output.

Level comparator, NRZ
comparator and LVA comparator
outputs. They are open
collectors. (Applied voltage
range: –0.5 V to +7.0 V)

Controls the ON/OFF operation
of the quick-charge circuit.
Set this pin high to execute the
quick charge. (Applied voltage
range: –0.5 V to +7.0 V)

VCC

GND

72

7

VCC

GND

72

72

8

VCC

GND

7k 7k

70k

9

72

GND

10

12

13

20k

100k

GND

11

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CXA3099N

Pin
No.

Symbol Pin voltage Equivalent circuit Description

14

15

16

REG CONT

REG OUT

VCC

—

1.0 V

Output for internal constant­voltage source amplifier.
Connect the base of PNP
transistor.
(Current capacity: 100 µA)

Constant-voltage source output.
Controlled to maintain 1.0 V.

Power supply.

VCC

GND

72

14

VCC

GND

78k

1k

22k

15