LA71750EM
No.7952-10/46
Head Amplifier
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
PB mode
T70
RF
T71
HA
Voltage gain SP-L CH1
SP-H CH2
EP-L CH3
EP-H CH4
Gvp1
Gvp2
Gvp3
Gvp4
SG5
f=4MHz
38mVp-p T96A
T93A
T90A
T87A
T79
VIN = 38mVp-p
f = 4MHz
0
5.0
0
5.0
0
5.0
58.0
60.0
62.0
dB
Difference of voltage
gain 1
ΔGvp1
Gvp1-Gvp2
-1
0
+1
dB
Difference of voltage
gain 2
ΔGvp2
Gvp3-Gvp4
-1
0
+1
dB
Difference of gain
between mode
ΔGvp3
Gvp3-Gvp1
-1
0
+1
dB
Frequency
CH1
Characteristics
CH2
CH3
CH4
ΔVfp1
ΔVfp2
ΔVfp3
ΔVfp4
SG5
f=7MHz
38mVp-p T96A
T93A
T90A
T87A
T79
The ratio of the VIN = 38mVp-p,
f = 7MHz output and Gvp1, 2, 3, 4.
0
5.0
0
5.0
0
5.0
-1
0
+1
dB
Secondary
CH1
harmonic
CH2
distortion
CH3
CH4
VHDP1
VHDP2
VHDP3
VHDP4
SG5
f=4MHz
38mVp-p T96A
T93A
T90A
T87A
T79
VIN = 38mVp-p, The ratio of 8MHz
(second component) of f = 4MHz
output and 4MHz (first component).
0
5.0
0
5.0
0
5.0
-40
dB
Maximum
CH1
output
CH2
level
CH3
CH4
VOMP1
VOMP2
VOMP3
VOMP4
SG5
f=1MHz
T96A
T93A
T90A
T87A
T79
As f = 1MHz, the output level of which
become -30dB as the ratio of output
3MHz (third component) and 1MHz
(first component).
0
5.0
0
5.0
0
5.0
1.2
Vp-p
Cross talk SP-L CH1
VCR1
SG5
f=4MHz
38mVp-p T93A
T90A
T87A
T79
The ratio of output of VIN = 38mVp-p,
f = 4MHz and Gvp1.
00
-35
dB
Cross talk SP-H CH2
VCR2
SG5
f=4MHz
38mVp-p T96A
T90A
T87A
T79
The ratio of output of VIN = 38mVp-p,
f = 4MHz and Gvp2.
5.0
0
-35
dB
Cross talk EP-L CH3
VCR3
SG5
f=4MHz
38mVp-p T96A
T93A
T87A
T79
The ratio of output of VIN = 38mVp-p,
f = 4MHz and Gvp3.
05.0
-35
dB
Cross talk EP-H CH4
VCR4
SG5
f=4MHz
38mVp-p T96A
T93A
T90A
T79
The ratio of output of VIN = 38mVp-p,
f = 4MHz and Gvp4.
5.0
-35
dB
Equivalent
CH1
input noise
CH2
voltage
CH3
CH4
VEIN1
VEIN2
VEIN3
VEIN4
SG5
f=1MHz
38mVp-p T96A
T93A
T90A
T87A
T79
The ratio of output passed through
1.1MHz LPF when input
VIN = 38mVp-p and f = 1MHz and
output when no input.
0
5.0
0
5.0
0
5.0
0.6
1.2
μVrms
Output DC off set
ΔVODC1
ΔVODC2
ΔVODC3
ΔVODC4
ΔVODC5
ΔVODC6
T79
T82 output DC
difference when no
input
CH1-CH2
CH3-CH4
CH1-CH3
CH2-CH4
CH1-CH4
CH2-CH3
-150
0 +150
mV
Envelope detection
output terminal voltage
VENV1
VENV2
VENV3
VENV4
T84
T84 DC when no input.
0
5.0
0
5.0
0
5.0
0.2
1.0
V
Envelope detection
output terminal voltage
SP1
VENSP1
SG5
f=4MHz
mVp-p
T96A
T84
When input f = 4MHz, T84 230mVp-p,
DC diff to venv, for T82A output level.
0
2.0
2.5
3.0
V
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