TDA5155X Просмотр технического описания (PDF) - Philips Electronics

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TDA5155X

Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads

Philips Electronics 

Philips Semiconductors

Pre-amplifier for Hard Disk Drive (HDD)

with MR-read/inductive write heads

Preliminary specification

TDA5155

12 RECOMMENDED OPERATION CONDITIONS

SYMBOL

VCC

VCC(WD)

VIH

VIL

Vi(dif)(p-p)

VIH(PECL)

VIL(PECL)

Ii(dif)(p-p)

IIH(dif)

IIL(dif)

Tamb

Tj

RMR

∆(RMR)

Ll(tot)

Rl(tot)

VMR

Vsig(dif)(p-p)

Lwh

Rwh

Cwh

Rext

PARAMETER

supply voltage

write driver supply voltage

HIGH level input voltage (CMOS)

LOW level input voltage (CMOS)

differential input voltage

(peak-to-peak value)

HIGH level PECL input voltage

LOW level PECL input voltage

differential input current

(peak-to-peak value)

HIGH level differential input current

LOW level differential input current

ambient temperature

junction temperature

MR element resistance

RMR mismatch

total lead inductance to the head

total lead resistance to the head

voltage on top of MR elements

differential MR head input voltage

(peak-to-peak value)

write head inductance

write head resistance

write head capacitance

external reference resistor

CONDITIONS

note 1

note 2

note 3

note 3

note 3

note 4

note 4

note 4

reading

writing (VCC(WD) = 8 V)

note 5

in each lead; note 6

in each lead; note 6

note 7

including lead; note 6

including lead; note 6

including lead; note 6

Iref = R-V----er--e-x--ft

MIN.

4.5

VCC

3.5

0

0.4

TYP

−

−

−

−

0.7

MAX.

5.5

8.8

VCC

0.8

1.5

UNIT

V

V

V

V

V

−

2.85

VCC

V

1.5

2.15 −

V

0.4

0.8

1.0

mA

−1.4 −1.2 −

mA

−

−0.4 −0.1 mA

0

−

70

°C

−

−

110

°C

−

−

130

°C

15

28

34

Ω

−

−

4

Ω

−

25

−

nH

−

1.5

−

Ω

−

−

0.5

V

0.4

1

2

mV

−

0.15 −

µH

−

10

−

Ω

−

tbf

−

pF

−

10

−

kΩ

1997 Apr 08

16

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