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TDA5155X Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. TDA5155X
Description  Pre-amplifier for Hard Disk Drive HDD with MR-read/inductive write heads
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

 
 4 page
background image
1997 Apr 08
4
Philips Semiconductors
Preliminary specification
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
TDA5155
5
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VCC
supply voltage
4.5
5.0
5.5
V
VCC(WD)
supply voltage for write drivers
VCC
8.0
8.8
V
Gv(dif)
differential voltage gain
from head inputs to RDx, RDy;
RMR =28 Ω; IMR =10mA
data bit d4 = 0
160
data bit d4 = 1
226
B−3dB
−3 dB frequency bandwidth
upper bandwidth without gain
boost (4 nH lead inductance)
220
MHz
F
noise figure
RMR =28 Ω; IMR =10mA;
Tamb =25 °C; f = 20 MHz
3.0
3.2
dB
Virn
input referred noise voltage
RMR =28 Ω; IMR =10mA;
Tamb =25 °C; f = 20 MHz
0.9
1.0
nV/
√Hz
CMRR
common mode rejection ratio
RMR mismatch <5%
IMR =10mA
f < 1 MHz
45
dB
f < 100 MHz
25
dB
PSRR
power supply rejection ratio
(input referred) RMR mismatch <5%
IMR =10mA
f < 1 MHz
80
dB
f < 100 MHz
50
dB
tr, tf
write current rise/fall time
(10% to 90%)
Lh = 150 nH; Rh =10 Ω;
IWR = 35 mA; f = 20 MHz
VCC(WD) = 8.0 V
−−
1.8
ns
VCC(WD) = 6.5 V
−−
2.1
ns
IMR(PR)
programming MR bias current
range
Rext =10kΩ
5
20.5
mA
IWR(b-p)
programming write current range
(base-to-peak)
Rext =10kΩ
20
51
mA
fSCLK
serial interface clock rate
−−
25
MHz




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