L6326 Datasheet, PDF (2/4 Pages) STMicroelectronics – 2 CHANNEL VOLTAGE SENSE AMR/GMR PREAMPLIFIERS

L6326
Figure 1. Preamplifier block diagram
VCC (+5V)
VGND (0V)
VDD (+8V)
WDX
WDY
PREDRIVER
FLT
3v FAULT PROCESSOR
Low supply detection,
Open/short heads,
TA detection,
low write frequency,
high temperature
SDATA
SCLK
SDEN
3v
SERIAL INTERFACE
CONTROL
R/W
MRR
3v
HEAD SELECTION
&
MODE CONTROL
ABHV/
ADTV
RDX
RDY
Gain
boost
L 6326
WRITE
DRIVERS
Imr, Iwr
RW enable
head select
ABHV,
MR meas
Temperature
monitoring
TA detection,
TA correction
VREF
WRITE
DAC
READ
DAC
MR
READ
INPUT
STAGES
RREF/NC
HGND
HW0X
HW0Y
HW1X
HW1Y
HR0
HR 1
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