TDA7427AD Просмотр технического описания (PDF) - STMicroelectronics

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TDA7427AD

AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER

STMicroelectronics 

TDA7427A

Data Byte Specification

CHARGE PUMP CONTROL

MSB

LSB

D7

D6

D5

D4

D3

D2

D1

D0

FUNCTION

0

0

0

0 High current = 0mA

0

0

0

1 High current = 0.5mA

0

0

1

0 High current = 1.0mA

0

0

1

1 High current = 1.5mA

0

1

0

0 High current = 2.0mA

0

1

0

1 High current = 2.5mA

0

1

1

0 High current = 3.0mA

0

1

1

1 High current = 3.5mA

1

0

0

0 High current = 4.0mA

1

0

0

1 High current = 4.5mA

1

0

1

0 High current = 5.0mA

1

0

1

1 High current = 5.5mA

1

1

0

0 High current = 6.0mA

1

1

0

1 High current = 6.5mA

1

1

1

0 High current = 7.0mA

1

1

1

1 High current = 7.5mA

0

0

Low current = 0µA

0

1

Low current = 50µA

1

0

Low current = 100µA

1

1

Low current = 150µA

0

Select low Current

1

Select high Current

1

Select loop filter LP_FM

0

Select loop filter LP_AM

LPIN1/2 CURRH B1

B0

A3

A2

A1

A0

Subaddress = 00H

PLL COUNTER 1 (LSB)

MSB

LSB

D7

D6

D5

D4

D3

D2

D1

D0

0

0

0

0

0

0

0

0 LSB = 0

0

0

0

0

0

0

0

1 LSB = 1

0

0

0

0

0

0

1

0 LSB = 2

1

1

1

1

1

1

0

0 LSB = 252

1

1

1

1

1

1

0

1 LSB = 253

1

1

1

1

1

1

1

0 LSB = 254

1

1

1

1

1

1

1

1 LSB = 255

PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 Bit name

FUNCTION

Subaddress = 01H

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