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SM7153 Datasheet(PDF) 4 Page - SamHop Microelectronics Corp.

Part # SM7153
Description  ELECTRONIC VOLUME CONTROLLER
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Manufacturer  SAMHOP [SamHop Microelectronics Corp.]
Direct Link  http://www.samhop.com.tw
Logo SAMHOP - SamHop Microelectronics Corp.

SM7153 Datasheet(HTML) 4 Page - SamHop Microelectronics Corp.

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(2) Attenuation Display Output
The SM7153 is provided with the DC current output terminal for displaying attenuation.
With 0dB ~
∞ divided into 13 steps, current of approx. 100
µA/step is transmitted.
TABLE 1
2
Step
0
1
2
3
4
5
6
7
8
9
10
11
12
13
DCO
0
I = 100μA + 30μA
2 x
I
3 x
I
4 x
I
5 x
I
6 x
I
7 x
I
8 x
I
9 x
I
10 x
I
11 x
I
12 x
I
13 x
I
Attenuation
-64 dB ~
-60dB ~ -62dB
-54dB ~ -58dB
-50dB ~ -52dB
-44dB ~ -48dB
-40dB ~ -42dB
-34dB ~ -38dB
-30dB ~ -32dB
-24dB ~ -28dB
-20dB ~ -22dB
-14dB ~ -18dB
-10dB ~ -12dB
-4dB ~ -8dB
0dB ~ -2dB
1
3
4
5
6
7
8
9
10
11
12
13
STEP 0
ABOUT 100mV + 30mV
VSS
ABOUT 1.3V
Figure 3
8
1K
VSS
When high precision is required, use a variable resistor as a load resistor.
V.1.0
SM7153
SAMHOP Microelectronics Corp.
三合微科股份有限公司
ELECTRONIC VOLUME
CONTROLLER


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