HA12188AF Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA12188AF

Pre-amplifier and servo IC for quadruple-speed CD-ROM

Hitachi -> Renesas Electronics 

HA12188AF

Block Diagram

VCC

42 41

40

RS2

39 38 37

RS1 RFS

–+

36 35

Bias

+ RF1

43 –

RF2

+

44 –

45

APC

46

47

+ TR1

48 –

TR2 BAL

+

49 –

VR

–

+

FE

VR

50

VR

51

–+

TE

52

53 +

–

54

FA

TZC

55

FS4

56

– FZC

+

Focus

bias

adj.

DS1

DS2

FS2

FLS

Phase

compen.

FS1

FSA

FPS – +

×2.7

1 2 34 5 6 7 8

9 10

34 33

32 31 30 29

Mirror

FOK

–

+

Defect

Logic

Input

I/F

Output

I/F

28 LDS

27 CLK

26 DATA

25 XLT

24 DC

23 XRST

22 SENS

21 COUT

20 DEFECT

or DRT

SLM

DRIV.

TM5 TM6

19

SSA

+–

18

Phase

THS compen.

17

TM2

TM3 TM4

TM7 TSA

TM1

TPS

TLS

–+

16

TAC

DRIV.

11 12

×2.7

13 14

15 VCC

FAC

DRIV.

• The states of the IC’s internal switches at XRST = “L” are shown at block diagram.

• The black dot symbol of transfer switch shows on state.

• The symbols “ ” mean connecting to VCC.

• The symbols “ ” mean connecting to pin 45.

Rev.1, Oct. 1995, page 2 of 35

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