TDA5345HT 데이터 시트보기 (PDF) - Philips Electronics
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TDA5345HT Datasheet PDF : 44 Pages
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Philips Semiconductors
5 V spindle & VCM driver combo
Preliminary specification
TDA5345HT
SYMBOL
PIN #
SCLK
41
SEN_N
42
SpinMechClock 43
SpinDigOut
44
RetReset
45
RegNPNBase 46
RegSense
47
GndDig
48
VcmDacOut
49
ShockRef
50
ShockFiltOut 51
ShockCompOut 52
ShockCom
53
ShockAmpOut 54
ShockInput
55
Vdd5Ana2
56
TempMux
57
SpinSpeedFilter 58
SpinCompens 59
BrakePower
60
SpinCenterTap 61
RetPmosDrain 62
IsoSwSo
63
GNDAna3
64
DESCRIPTION
serial port Clock
serial port ENABLE line: active low
spindle rotation speed (1 pulse / revolution)
spindle back-EMF comparator output or commutation clock
external capacitor used to reset the retract sequence state machine
3v3 DC-DC converter output (drives an external NPN)
3v3 DC-DC converter input
digital ground
12-bit VCM DAC output
shock sensor reference voltage
shock sensor RC low pass filter output
shock sensor comparator output
shock sensor input common mode
shock sensor amplifier output
shock sensor input
analog power supply
internal thermal monitor circuitry voltage output
external FLL/PLL speed loop filter
spindle current loop compensation capacitor
external capacitor to supply the spindle brake at power down
spindle centre tap connection
retract Pmos transistor drain connection
spindle power outputs supply
analog ground
I/O
I
I
O
O
I
O
I
GROUND
O
O
O
O
I
O
I
SUPPLY
O
O
O
I
I
O
SUPPLY
GROUND
1999 June 10
6
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