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1998 July 30
Philips Semiconductors Objective Specification, Revision 2.2
Pre-Amplifier for Hard Disk Drive with
MR-Read / Inductive Write Heads
TDA5360
6
6 BLOCK DIAGRAM
HEADMUX
d/dt
Av
MUX
SERIAL
INTERFACE
FAULT
DETECTION
BUFFER
MR BIAS
/ POWER
SETTING
WRITE
BANDGAP
THERMAL
ASPERITY
DETECTOR
RDp
RDn
FLT
Rext
WDp
WDn
SDATA
SCLK
SEN
+
CURRENT
RFE
hybrid
sense
RMR
TA handling
Rin:2bits
voltage
pre-driver
boost 1 bit
boost:2bits
WDI
V/I
Interface
1 bit
voltage
driven
pre-driver
boost:1bit
CODING
Av
1.5 bit
On/Off
TA CORRECTOR
3bits
DIGITIZER
Rmr measure
temperatue
WDI
Read Back End
RFE
hybrid
sense
RMR
Rin:2bits
V / I
out
CURRENT
4 bits
5 bits
5 bits
TA handling
driven