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PDF LC7536LHS Data sheet ( Hoja de datos )
| Número de pieza | LC7536LHS | |
| Descripción | High-voltage/ Two-channel Electronic Attenuator | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number:ENN3942
CMOS IC
LC7536LHS
High-Voltage, Two-Channel
Electronic Attenuator
Overview
The LC7536LHS is a two-channel electronic attenuator for
volume, balance and loudness controls in stereo audio ap-
plications.
The LC7536LHS reads data from a three-line serial bus to
control attenuation in 1 dB steps over an 80 dB range, up to
a maximum of 96 dB. It features a center tap at 20 dB at-
tenuation for a loudness control using a minimum of exter-
nal components. A device select pin allows two devices to
be connected to the serial bus.
Package Dimensions
unit:mm
3061-DIP30S
[LC7536LHS]
30 16
1 15
27.2
The LC7536LHS operates from 5 V and 10 V supplies and
is available in 30-pin DIPs.
Features
• Three-line serial control.
• Two device select.
• Tap at 20 dB attenuation for a loudness control.
• 80 dB attenuation range adjustable in 1 dB steps.
• 96 dB maximum attenuation.
• 75 dB crosstalk rejection.
• 0.022% total harmonic distortion.
• 47kΩ input impedance.
• 5 V and 10 V supplies.
• 30-pin DIP.
1.15 1.78
0.48 0.95
SANYO : DIP30S
Specifications
Absolute Maximum Ratings at Ta=25˚C, VSS=0V, VEE=0V
Parameter
Symbol
Maximum supply voltage
CLK, DI and CE input voltage range
VDD max
VCC max
VI1
Analog input voltage range
VI2
Select pin input voltage range
Allowable power dissipation
Operating temperature range
Stroage temperature range
VI3
Pd max
Topr
Tstg
Ta≤85°C
Conditions
Ratings
0 to 12
0 to 7
0 to VCC+0.3
VEE–0.3
to VDD+0.3
VCC–0.3
to VDD+0.3
250
–40 to +85
–50 to +125
Unit
V
V
V
V
mW
˚C
˚C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51501TN (KT)/8051JN No.3942–1/7
1 page  
LC7536LHS
The voltage on the select input determines the address of
the device as shown in table 1.
Table 1. Address codes
Select pin
VDD
VCC
A0 A1 A2 A3
10 0 1
00 0 1
Data bits D0 to D3 select the right-channel attenuation in 5
dB steps as shown in table 2. Similarly, bits D8 to D11
select the left-channel attenuation in 5 dB steps.
Table 2. Right-channel 5 dB steps
Data bits D4 to D6 select the right-channel attenuation in 1
dB steps as shown in table 3. Similarly, bits D12 to D14
select the left-channel attenuation in 1 dB steps.
Table 3. Right-channel 1 dB steps
Attenuation(dB)
0
1
2
3
4
∞
D4 D5 D6
0 11
1 01
0 01
1 10
0 10
0 00
Attenuation(dB)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
D0 D1 D2 D3
11 1 1
01 1 1
10 1 1
00 1 1
11 0 1
01 0 1
10 0 1
00 0 1
11 1 0
01 1 0
10 1 0
00 1 0
11 0 0
01 0 0
10 0 0
00 0 0
Data bits D7 selects loudness control. When D7 is 1, loud-
ness control is ON, and when 0, loudness control is OFF.
Audio Signal
The right-channel audio input signal is input on R5dBIN(5
dB attenuation steps). The output, R5dBout, is fed back to
R1dBIN (1 dB attenuation steps). The right-channel audio
output is on R1dBOUT. The left-channel audio signal flow
is identical.
No.3942–5/7
5 Page | ||
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