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參數資料
| 型號： | HT9020B |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Call Progress Tone Detector |
| 中文描述： | 呼叫進展音探測器 |
| 文件頁數： | 2/7頁 |
| 文件大小： | 120K |
| 代理商： | HT9020B |
Pin Description
Pin Name
I/O
Internal
Connection
Description
ENV
O
CMOS OUT
While an input signal is within specification, this pin will output the enve-
lope relative to the input signal with a typical 40ms timing delay.
VREF
O
CMOS OUT
1/2 V
DD
reference voltage output pin
When EN=V
DD
, the device will be turned off and VREF disabled.
SIN
I
CMOS IN
AC coupled analog signal input pin
VSS
Negative power supply, ground
VDD
Positive power supply
EN
I
CMOS IN
EN=V
SS
; Normal operation mode
EN=V
DD
; Device disabled.
X1
I
OSCILLATOR
The system oscillator consists of an inverter, a bias resistor and the
necessary on-chip load capacitor. Connect a standard 32.768kHz crys-
tal or ceramic resonator.
X2
O
OSCILLATOR
X1 and X2 terminals implement the oscillator function.
The oscillator is turned off in the standby mode.
Approximate internal connection circuits
Absolute Maximum Ratings
Supply Voltage..............................V
SS
0.3V to V
DD
+6V
Storage Temperature............................ 55 C to 150 C
Input Voltage ............................ V
SS
0.3V to V
DD
+0.3V
Operating Temperature .......................... 20 C to 75 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
HT9020B
Rev. 1.20
2
March 31, 2003
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相關PDF資料 |
PDF描述 |
|---|---|
| HT9020 | Call Progress Tone Decoder & ABR Controller |
| HT9020A | Call Progress Tone Decoder & ABR Controller |
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| HT9033 | CAS Tone Detector |
| HT9170 | DTMF Receiver |
相關代理商/技術參數 |
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|---|---|
| HT9030 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Calling line identification receiver |
| HT9031(18DIP-A) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Caller Number ID Circuit |
| HT9031(18DIP-B) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Caller Number ID Circuit |
| HT9031(20DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Caller Number ID Circuit |
| HT9031(24DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Caller Number ID Circuit |
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