TDA7427A datasheet(13/21 Pages) STMICROELECTRONICS

13 / 21 page

Data Byte Specification

CHARGE PUMP CONTROL

MSB

LSB

FUNCTION

High current = 0mA

High current = 0.5mA

High current = 1.0mA

High current = 1.5mA

High current = 2.0mA

High current = 2.5mA

High current = 3.0mA

High current = 3.5mA

High current = 4.0mA

High current = 4.5mA

High current = 5.0mA

High current = 5.5mA

High current = 6.0mA

High current = 6.5mA

High current = 7.0mA

High current = 7.5mA

Low current = 0

µA

Low current = 50

µA

Low current = 100

µA

Low current = 150

µA

Select low Current

Select high Current

Select loop filter LP_FM

Select loop filter LP_AM

LPIN1/2 CURRH

Subaddress = 00H

PLL COUNTER 1 (LSB)

MSB

LSB

FUNCTION

000

0000

LSB = 0

000

0001

LSB = 1

000

0010

LSB = 2

111

1100

LSB = 252

111

1101

LSB = 253

111

1110

LSB = 254

111

1111

LSB = 255

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

Bit name

Subaddress = 01H

TDA7427A

13/21

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