cxa1720q Sony Electronics, cxa1720q Datasheet - Page 19

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cxa1720q

Manufacturer Part Number
cxa1720q
Description
Read/write Amplifier With Built-in Filters For Fdds
Manufacturer
Sony Electronics
Datasheet
–10
–20
–30
–40
–50
–60
–70
–10
–20
–30
–40
–50
–60
–70
10
10
0
0
10k
10k
50k
50k
f
f
01
03
–10
=170 (KHz) Frequency (Hz)
=320 (KHz) Frequency (Hz)
–2
–4
–6
–8
100k
100k
0
10k
1M/outer track
2M/outer track
Filter characteristics in the four modes
(These characteristics are based on pre-amplifier output. 0dB=pre-amplifier output
level)
Normalized pre-amplifier voltage gain and phase vs. Frequency
300k
300k
1M
1M
Voltage gain
V
V
Voltage gain
100k
CC
CC
=5V, Ta=25˚C
=5V, Ta=25˚C
3M
3M
Phase
Phase
R
R
F
F
=3.2k
=3.2k
200
150
100
0
–50
50
–100
–150
–200
50
–100
–150
–200
200
150
100
0
–50
f-Frequency (Hz)
—19—
1M
–10
–20
–30
–40
–50
–60
–70
–10
–20
–30
–40
–50
–60
–70
10
10
0
10k
0
10k
10M
50k
50k
Phase
Voltage Gain
f
f
04
02
=345 (KHz) Frequency (Hz)
=182 (KHz) Frequency (Hz)
Vcc=5V, Ta=25˚C
When HD=high, low
100k
100k
2M/inner track
1M/inner track
300k
300k
100M
0
30
60
90
120
150
1M
1M
Voltage gain
V
V
Voltage gain
CC
CC
=5V, Ta=25˚C
=5V, Ta=25˚C
Phase
3M
3M
Phase
R
R
F
F
=3.2k
=3.2k
CXA1720Q
200
150
100
0
–50
200
150
100
50
–50
–100
–150
–200
50
–100
–150
–200
0

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