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參數(shù)資料
| 型號： | HT8955 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Voice Echo |
| 中文描述： | 語音回聲 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 589K |
| 代理商： | HT8955 |
Pad Coordinates
Unit:
μ
m
Pad
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
X
Y
Pad
No.
14
15
16
17
18
19
20
21
21
22
23
25 –264.00 806.00
X
Y
–1138.00 796.50
–1141.00 523.50
–1136.50 201.50
–1136.50 –163.00
–1137.00 –507.00
–1149.00 –774.00
–854.50 –853.50
–548.00 –831.50
–198.50 –831.50
111.50
461.00
773.00
1122.50 –831.50
1141.50 –547.00
1141.50 –197.50
1141.50 111.50
1141.50 461.00
1141.50 770.50
896.00
645.00
435.00
335.00
150.00
–35.00
811.00
810.50
794.00
794.00
779.00
779.00
–831.50
–831.50
–831.50
Chip size: 2170
×
2200 (
μ
m)
2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Pin Description
Pin No. Pin Name I/O
Internal
Connection
Description
1
BIAS
O
OP Non-inverted
Internal pre-amplifier bias
Connects to a decoupling capacitor
2
IN
I
OP Inverted
Audio signal input pin (inverted)
3
PREO
O
OP OUTPUT
Pre-amplifier output pin
4
OUT
O
—
Delayed audio signal output pin
5
SE L
I
Pull-High
DRAM type selection:
VDD or Open: 64K b
VSS: 256K b
6
OSC1
I
—
System oscillator input
7
OSC2
O
—
System oscillator output
8
OSC3
I
—
Delay time control oscillator input
9
OSC4
O
—
Delay time control oscillator output
10
VSS
I
—
Negative power supply (GND)
11
A6
O
CMOS OUT
Connects to DRAM A6
12
A7
O
CMOS OUT
Connects to DRAM A7
HT8955A
2
5th May ’98
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT8955A | Voice Echo |
| HT8970 | Voice Echo |
| HT9011 | FM IF Detector |
| HT9015 | RF Single Chip for Cordless Phone |
| HT9020B | Call Progress Tone Detector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT8955A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Echo |
| HT8960 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT8970 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Echo |
| HT8970(16DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT8970(16SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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