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HT8970 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc

Part # HT8970
Description  Voice Echo
Download  11 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT8970 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc

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Application Circuits
Echo Mode
Note:
: Analog ground,
: Digital ground
When the value of the ROSC increases, the range of the Delay time also increases. Please refer to the
ROSC
- fOSC - Delay_time Cross table for the ROSC & Delay time values.
HT8970
Rev. 1.10
5
May 2, 2008
V C C
R E F
A G N D
4 . 7 m F
1
2
3
D G N D
O S C _ O
V C O
C C 1
4
5
6
7
C C 0
8
1 0 0 m F
0 . 1 m F
0 . 1 m F
L P F 1 _ I N
L P F 1 _ O U T
5 6 0 p F
1 0 k W
1 2 k W
1 6
1 5
4 . 7 m F
5 6 0 0 p F
1 5 k W
4 . 7 m F
1 0 0 k W
1 3 k W
1 0 m F
0 . 0 3 3 m F
O u t p u t
1 0 m F
1 5 k W
L P F 2 _ O U T
L P F 2 _ I N
5 6 0 p F
1 5 k W
1 0 k W
1 4
1 3
5 6 0 p F
O P 2 _ O U T
O P 2 _ I N
1 5 k W
1 2
1 1
0 . 0 4 7 m F
O P 1 _ I N
O P 1 _ O U T
0 . 0 4 7 m F
1 0
9
5 V
R
2 0 k W
4 . 7 m F
3 9 p F
4 7 k W
2 2 m F
5 6 0 W
4
9 V
8
1
3
2
2 0 k W
9 V
4 . 7 k W
4 7 k W
4 . 7 k W
1 0 0 m F
1 k W
1 m F
4 . 7 k W
1 k W
0 . 6 8 m F
4 . 7 k W
M I C
4 5 5 8
4 . 7 k W
H T 8 9 7 0
0 . 1 m F


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