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LC7537N Datasheet(PDF) 3 Page - Sanyo Semicon Device

Part No. LC7537N
Description  Electronic Volume Control System for Audio Equipment
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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 3 page
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No. 5190-3/10
LC7537N, 7537AN, 7537NE
Item
Symbol
Condition
Rating
min
typ
max
Unit
Total harmonic
THD(1)
VIN = 1 V, f = 1kHz, all flat overall
0.005
0.01
%
Distortion
THD(2)
VIN = 1 V, f = 20 kHZ, all flat overall
0.006
0.02
%
Crosstalk
CT
VIN = 1 V, f = 1 kHz, all flat, Rg = 1 kΩ
60
95
dB
Vomin(1)
VIN = 1 V, f = 1 kHz, MAIN, VR = ∞, FADER VR = ∞
80
90
dB
Maximum attenuation output
Vomin(2)
VIN = 1 V, f = 1 kHz, MAIN, VR = ∞, VDD = 8 V, FADER VR = ∞,
70
80
dB
VEE = VSS = 0 V, C between VSS and GND of L/R = 1000 µF
RVOL(1)
5 dB-step
12
20
28
k
RVOL(2)
1 dB-step
12
20
28
k
VR resistance voltage
RBASS
12
20
28
k
RTREBLE
12
20
28
k
RFADER
12
20
28
k
Output noise
VN(1)
All flat overall (IHF-A) Rg = 1 kΩ
2
10
µV
VN(2)
Rg = 1 k
Ω, V
DD = 8 V, VEE = VSS = 0 V
2
10
µV
Current drain
IDD
VDD – VEE = 15 V
1
mA
ICC
VCC = 5 V
1
mA
Continued on next page.
Electrical Characteristics at Ta = 25°C, VDD =+7.5 V, VEE =–7.5 V, VCC =+5 V
Pin No.
Symbol
Description of Functions
Remarks
12(8)
L.IN
31(29)
R.IN
9(4)
L.C1
34(33)
R.C1
10(5)
L.C2
33(32)
R.C2
11(6)
L.OUT
32(31)
R.OUT
5(47)
L.FIN
38(38)
R.FIN
4(46)
L.FOUT
3(45)
L.ROUT
39(39)
R.ROUT
40(40)
R.ROUT
15(11)
L.B1
16(9)
L.B2
14(10)
L.B3
28(26)
R.B1
27(28)
R.B2
29(27)
R.B3
17(13)
L.T1
16(12)
L.T2
18(14)
L.T3
26(24)
R.T1
27(25)
R.T2
25(23)
R.T3
7(1)
LCT1
6(48)
LCT2
36(36)
RCT1
37(37)
RCT2
Main volume control block 5 dB-step attenuator input terminals. These pins should be
driven at a low impedance.
Main volume control block 5 dB-step attenuator output terminals. Having been designed
to be open, the step positions will develop errors if at low acceptor impedances, so that as
high load impedances as possible should be provided.
VR resistance : 20 k
VR resistance : 20 k
VR resistance : 20 k
Main volume control block 1 dB-step attenuator input terminals. Theses pins should be
driven at alow impedance.
Main volume control block 1 dB-step attenuator output terminals. Due to the step
positions designed to be open, load impedances as high as possible should be provided to
them, similar to those for the LC1 and RC1.
Fader functions employing mode input terminals. These pins should be driven at a low
impedance.
Fader block output terminals. These pins permit the front and rear sides to be faded out
independently of each other. Attenuations exercised on Lch will be the same as on Rch.
Due to the step positions designed to be open, acceptor impedances as high as possible
should be provided to them.
Pin Description (
) : LC7537AN, 7537NE
Bass tone control block terminals. A total of 15 positions have been provided in 2 dB
steps
Treble tone control block terminals. A total of 15 positions have been provided in 2 dB
steps. The VR resistance value is 20 k
Ω.
VR resistance : 20 k
VR resistance : 20 k
Loudness dedicated terminals. A high-frequency-range correcting C should be put
between CT1 and IN, and low-frequency-range correcting C between CT2 and L–VSS
(R–VSS).




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