TDA5153AG View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA5153AG
Philips Electronics
TDA5153AG Datasheet PDF : 28 Pages
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Philips Semiconductors
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
Preliminary specification
TDA5153
12 RECOMMENDED OPERATION CONDITIONS
SYMBOL
PARAMETER
VCC
VCC(WD)
VIH
VIL
Vi(dif)(p-p)
supply voltage range
write driver supply voltage
HIGH level input voltage (CMOS)
LOW level input voltage (CMOS)
differential input voltage
(peak-to-peak value)
VIH(PECL)
VIL(PECL)
Tamb
Tj
HIGH level PECL input voltage
LOW level PECL input voltage
ambient temperature
junction temperature
RMR
∆RMR
Ll(tot)
Rl(tot)
VMR
Vsig(dif)(p-p)
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 signal
(peak-to-peak value)
Lwh
write head inductance
Rwh
write head resistance
Cwh
write head capacitance
Rext
external reference resistor
CONDITIONS
note 1
note 2
note 3
MIN.
4.5
VCC
3.5
0
0.4
note 3
1.5
note 3
−
0
reading
−
writing (VCC(WD) = 8 V) −
15
note 4
−
in each lead; note 5
−
in each lead; note 5
−
note 6
−
0.4
including lead; note 5 −
including lead; note 5 −
including lead; note 5 −
Iref = R-V----er--e-x--ft
−
TYP
−
−
−
−
0.7
2.85
2.15
−
−
−
28
−
35
1.5
−
1
0.15
10
5
10
MAX.
5.5
8.8
VCC
0.8
1.5
UNIT
V
V
V
V
V
VCC
V
−
V
70
°C
110
°C
130
°C
34
Ω
4
Ω
−
nH
−
Ω
0.5
V
2
mV
−
µH
−
Ω
−
pF
−
kΩ
Notes
1. A supply by-pass capacitor from VCC to ground or a low-pass filter may be used to optimize the PSRR.
2. The supply voltage VCC(WD) must never be below VCC in normal mode, and two diode voltages above VCC in servo
mode.
3. The given values should be interpreted in such a way that the single-ended voltage could swing 0.2 to 0.75 V and
that the common mode voltage should be such that for any of the two states, VIH(max) < VCC and VIL(min) > 1.5 V.
PECL voltage swing: a wider peak-to-peak voltage swing can be used. In that case a current will flow through the
WDI inputs. This current is approximately equal to --(--W------D-----I--x-----–---2-W---0---0D-----I--y----)----–-----1---.--4-
4. The mismatch refers to the resistance of the two stripes of the same head. This is defined as follows:
∆RMR = RMR1 − RMR2
5. These parameters depend on the head model. The values given are those used for testing.
6. The combination of maximum head resistance, lead resistance and bias current is not permitted. To avoid voltage
break-through between heads and disk, the voltage over the MR elements is limited by two diodes.
1997 Jul 02
18
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