cxa1720q Sony Electronics, cxa1720q Datasheet - Page 3

• Manufacturer Part Number: cxa1720q
• Description: Read/write Amplifier With Built-in Filters For Fdds
• Manufacturer: Sony Electronics

Pin Description
No.
Pin
20
1
2
3
4
5
6
7
8
9
POWER ON
CURRENT
CONTROL
DENSITY
Symbol
ERASE
FILTER
WRITE
WRITE
WRITE
SIDE1
READ
GATE
GATE
DATA
DATA
HIGH
HIGH
GAIN
Pin voltage
—
—
—
—
—
—
—
—
—
—
20
8
9
2
4
5
6
7
100k
1k
Equivalent circuit
1k
2.3V
100k
140
—3—
1
D.GND
Vcc
Vcc
3
A.GND
A.GND
Vcc
Vcc
2.1V
A.GND
Reduced voltage detection output.
This is an open collector that outputs a low signal
when V
Write data input.
This pin is a Schmitt-type input and is triggered
when the logical voltage goes from high to low.
Read data output.
This pin is active when the logical voltage of the
Write gate signal and the Erase gate signal is high.
Write current control. The Write current is
increased when the logical voltage is low.
Write gate signal input. The Write system is active
when the logical voltage is low.
Erase gate signal input. The Erase system is
active when the logical voltage is low.
Head side switching signal input. The HEAD1
system is active when the logical voltage is low,
and the HEAD0 system is active when the logical
voltage is high, but only when the logical voltage
for the Write gate and the Erase gate is high.
Filter inner track/outer track mode control. Inner
track mode is selected when the logical voltage is
low.
Filter, time domain filter and Write current 1M/2M
mode control. 2M mode is selected when the
logical voltage is low.
Pre-amplifier voltage gain selection. Gain of 100x
is selected when the logical voltage is high; gain of
200x is selected when the logical voltage is low.
CC
is below the specified value.
Description
(Ta=25 °C, V
CXA1720Q
CC
=5 V)