型號(hào)： LA72680M
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： 14 X 14 MM, QFP-80
文件頁(yè)數(shù)： 15/21頁(yè)
文件大?。?/td> 323K
代理商： LA72680M
LA72680M
No.7955-3/21
Continued from preceding page.
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
FM modulation system
(PB FM IN to LINE OUT), PB mode, FM standard input=300mVp-p(R/Lch ratio=1:1)
Output level Lch
VOPL
fc=1.3±50kHz, fm=1kHz, Gain=1 (G3D4:0)
-11
-9
-7
dBV
Output level Rch
VOPR
fc=1.7MHz±50kHz, fm=1kHz, Gain=1 (G3D4:0)
-11
-9
-7
dBV
Output level difference
VDEM
fc=1.3MHz±50kHz, fm=1kHz
fc=1.7MHz±50kHz, fm=1kHz
Lch-Rch, Gain=1 (G3D4:0)
-1.5
0
1.5
dB
Output distortion Lch
THDPL
fc=1.3MHz±50kHz, fm=1kHz,DIN
0.3
0.5
%
Output distortion Rch
THDPR
fc=1.7MHz±50kHz, fm=1kHz, DIN
0.3
0.5
%
DO detector / HiFi detector
PB mode(DO DET : fc=1.3MHz / HiFi DET : fc=1.3MHz & 1.7MHz),
DO detection level
DOC
The ratio with Standard input
pin 31=300mVp-p
-26
-23
dB
DO detection hysteresis
DOCH
0.5
3
5
dB
HiFi recovery delay time
HIDEL
The delay time that is changed from NORMAL
to HiFi.
110
125
140
ms
HiFi detection DC output 1
VTRS1
Pin 34 input level=100mVp-p
2.1
2.6
3.1
V
HiFi detection DC output 2
VTRS2
Pin 34 input level=300mVp-p
3.3
3.8
4.3
V
HiFi detection DC output 3
VTRS3
Pin 34 input level=1Vp-p
4.3
4.8
5.3
V
NORMAL detection
DC output
NORDC
Pin 34 input level=0mVp-p
0.4
V
Hold pulse occurrence
PB mode
Hold pulse delay time
HPD
AUDIO HEAD PULSE IN
0.8
1.0
1.2
s
Hold pulse width
HPW
AUDIO HEAD PULSE IN
7.2
9.0
10.8
s
Band pass filter
PB mode, PB IN = 150mVp-p(R/L MIX ratio 1:1)
1.3MHz BPF monitor level
V13
34pin input level =60mVp-p,G2D2D1:01
80
100
120
mVp-p
1.7MHz BPF monitor level
V17
34pin input level =60mVp-p,G2D2D1:01
60
80
100
mVp-p
1.3MHz BPF
frequency characteristics 1
L115N
Level difference between 1.15M/1.3MHz
G2D2D1;01
-13
-5
dB
1.3MHz BPF
frequency characteristics 2
L145N
Level difference between 1.45M/1.3MHz
G2D2D1;01
-13
-5
dB
1.3MHz BPF
frequency characteristics 3
L155N
Level difference between 1.55M/1.3MHz
G2D2D1;01
-20
-10
dB
1.7MHz BPF
frequency characteristics 1
R145N
Level difference between 1.45M/1.7MHz
G2D2D1;10
-15
-5
dB
1.7MHz BPF
frequency characteristics 2
R155N
Level difference between 1.55M/1.7MHz
G2D2D1;10
-9
-3
dB
1.7MHz BPF
frequency characteristics 3
R185N
Level difference between 1.85M/1.7MHz
G2D2D1;10
-9
-3
dB
Playback head amp system
(PB HEAD AMP IN to OUT), PB mode
Voltage gain
GVP
VIN=100Vp-p, f=1.5MHz, CH1&2
66
69
72
dB
Voltage gain difference
CH1/CH2
GVP
-2
0
2
dB
EP gain boost value
GEP
VIN=100Vp-p, f=1.5MHz
1
2
3.2
dB
Frequency characteristics
fP
VIN=100Vp-p, f=1.8M/1.0MHz, CH1&2
-3
-1
1
dB
Input conversion noise voltage
VNINP
The value(1 / GVP) of 1.1MHz LPF output
level
1.7
2
Vrms
Output DC offset
VODC
CH1/CH2
-30
0
30
mV
REC AMP system
REC mode, The external resistor at pin 28 = 2.7k
REC current
IOR
Inflow current at pin 26
34
37
40
mA
Cross modulation distortion
0.4MHz component
CMDO4
Rch carrier level standard
-48
-40
dB
Cross modulation distortion
0.9MHz component
CMDO9
Rch carrier level standard
-55
-40
dB
current ratio +2dB
IOR+2dB
P23:0V,G4D6D5:01
1.6
2.0
2.4
dB
current ratio -2dB
IOR-2dB
P23:0V,G4D6D5:10
-2.4
-2.0
-1.6
dB
Mute attenuation value
IORMU
REC MUTE ON(pin 17:5V)
-40
dB
Continued on next page.
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