TDA5345HT datasheet(42/44 Pages) PHILIPS

42 / 44 page

1999 June 10

Philips Semiconductors

Preliminary speciﬁcation

5 V spindle & VCM driver combo

TDA5345HT

TYPICAL APPLICATION SCHEMATIC

Fig.27

VcmVddM

VcmVddP

Vdd5Dig

IsoSwSo

Vdd5Ana1 Vdd5Ana2

+5V

SpinGndAB SpinGndC

GNDAna2

GNDAna1

GNDAna3

GndDig

GND

VcmGndPow

NC1

NC2

SpinMotA

SpinMotB

SpinMotC

SpinCenterTap

Spindle

SpinRectBemf

BrakePower

SpinVddA

SpinVddBC

SpinCompens

SpinSpeedFilter

CLOCK

SCLK

SDATA

SEN_N

SpinMechClock

ASIC

SpinDigOut

TempMux

RefCurRes

VcmDacOut

VcmInput

VcmCompensOut

VcmSenseInM

VcmSenseInP

VcmMinus

VcmPlus

OpAmpInM

OpAmpOut

VcmBemf

ShockRef

VcmVdd5Div2

PowerFault

PorN

PorCap

Por5Adj

RegSense

RegNPNBase

VCM

ShockInput

ShockCom

ShockAmpOut

ShockFiltOut

ShockCompOut

C12

C13

C14

3v3

(7)

(12)

(33)

(17)

(49)

(20)

(22)

(23)

(6)

(11)

(46)

(21)

(30)

(31)

(50)

(29)

(55)

(53)

(54)

(51)

(47)

(3)

(8)

(61)

(13)

(2)

(1)

(10)

(60)

(58)

(59)

(44)

(43)

(38)

(41)

(39)

(42)

(57)

(52)

(37)

(25)

(26)

(28)

(9)

(48)

(64)

(32)

(16)

(15)

(5)

(4)

(14)

(63)

(40)

(24)

(56)

RetPmDrain

(62)

VcmCompensIn

(19)

VcmRef

(18)

RetReset

(45)

Reg3v3PwrUp (34)

Neg3V

(36)

PumpNeg3V

(35)

BdGap (27)

C10

C11

MR preamp

Analog

to dig.

conv

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