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SM9103M

更新时间： 2024-10-02 22:21:39

品牌	Logo	应用领域
NPC		ATM集成电路 SONET集成电路 SDH集成电路电信电路放大器光电二极管动态存储器 DVD 异步传输模式
页数	文件大小	规格书
14页	93K
描述
DVDRAM Head Amplifier LSI

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中文翻译

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数据手册

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SM9103M 数据手册

SM9103M

DVDRAM Head Ampliﬁer LSI

NIPPON PRECISION CIRCUITS INC.

OVERVIEW

PINOUT

The SM9103M is a photodiode photoelectric cur-

rent-to-voltage conversion head ampliﬁer LSI for

optical disk pickups in DVDRAM/DVDROM equip-

ment. It sums the photodiode current data signals and

then converts the signals to a differential signal for

output. The output tracking servo and focusing servo

signals are derived from built-in sum and difference

circuits, and the gain for these servo signals can be

adjusted using serial interface controls. Each of the

signals from the photodiodes, used to generate DPD

(Differential Phase Detection) tracking servo signal,

is current-to-voltage converted and then also output.

It operates from a single 5 V supply, and is available

in 36-pin plastic SSOP packages.

36-pin SSOP

(Top view)

MODE

WRITE

DGND

DVCC

TEMPO

TEMPI

36 SCLK

35 SDATA

34 SENB

33 CALREQ

32 TADD

31 TADDB

30 CAPAP

29 CAPAN

28 TSUB

27 TSUBB

26 DATAP

25 DATAN

24 DPDA

23 DPDB

22 DPDC

21 DPDD

20 AVCC

19 AGND

T4 10

F1 11

FEATURES

F2 12

AGND 13

VREF 14

FSUBB 15

FSUB 16

FADDB 17

FADD 18

■ RAM/ROM gain switching, low-noise RF signal

generator (differential output)

■ ROM tracking DPD signal output

■ Variable-gain RAM tracking push-pull signal out-

put

■ Address signal, high-speed push-pull signal output

■ Variable-gain focus error signal output

■ Tracking PD sum signal output

■ Focus PD sum signal output

■ Offset correction timing output (logic)

■ Temperature monitor function

■ Serial interface to control internal parameter set-

tings

■ Sleep-mode function

■ Single 5 V supply

■ 36-pin plastic SSOP

TYPICAL APPLICATIONS

■ Double-speed DVDROM equipment

■ Double-speed DVDRAM equipment

ORDERING INFORMATION

Device

Package

SM9103M

36-pin SSOP

NIPPON PRECISION CIRCUITS—1

12 3 4 5 6 7...14

中文翻译

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