CXA1940N Просмотр технического описания (PDF) - Sony Semiconductor
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CXA1940N Datasheet PDF : 16 Pages
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CXA1940N
No.
Item
9 Input referred
noise
Sym-
bol 1
2
SW Conditions
Measurement conditions
3 4 5 6 7 8 9 101112
Min.
Head impedance : 0Ω,
when the read amplifier
output voltage is
amplified 100 times and
voltage passed though
EN a a a a a b a a a b b a a LPF (low pass filter of
cutoff frequency
15MHz) is VN [Vrms],
EN=
VN
100 • AV • 15 × 106
Test point : V5
In-phase input voltage
SG2 : 100mVp-p, 5MHz
When the Read
amplifier output is VCM
10 Common mode CMRR b a a a d b a a a b b a [mVp-p],
50
rejection ratio
CMRR=20 log 100
VCM
+20 log AV
Typ. Max. Unit
0.55 0.7 nV
Hz
dB
Test point : V4
Ripple voltage SG3 :
100mVp-p, 5MHz
When the Read
amplifier output is VP
11 Power Supply PSRR a a a a a b b a a b b a [mVp-p],
50
dB
rejection ratio
PSRR=20 log 100
VP
+20 log
Test point : V4
Selected head input
voltage : 0mVP-P
Unselected head input
voltage SG1 : 100mVp-p,
5MHz
12 Channel
CS a b a a c b a a a b b a When the Read amplifier 50
dB
separation
output is VCS [mVp-p],
CS=20 log 100
VCS
+20 log AV
Read data
13 output offset VOFFR b a a a a b a a a a b a
voltage for Read
Test point : V4
VOFFR=V2–V3
Test point : V2, V3
–200
200 mV
—6—
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