TDA5155 Datasheet, PDF (22/24 Pages) NXP Semiconductors – Pre-amplifier for Hard Disk Drive HDD with MR-read/inductive write heads

Philips Semiconductors
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
Table 1 Noise figure
R_MR (Ω)
20
25
30
I_MR = 7 mA
2.7
2.8
2.9
F (dB)
I_MR = 10 mA
2.9
3.0
3.1
handbook, full pagewidth
R/W
Preliminary specification
TDA5155
I_MR = 15 mA
3.1
3.3
3.5
RDx-RDy
trec(W-R)
toff(R)
MGG985
Fig.5 Timing diagram of the reader: write-to-read switching on the same logic head.
handbook, full pagewidth
SEN
RDx-RDy
tsw(R)
MGG986
Fig.6 Timing diagram of the reader: typical head, current and standby-to-read characteristics.
1997 Apr 08
22