參數(shù)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(shù): 3/7頁
文件大?。?/td> 120K
代理商: HT9020B
Electrical Characteristics
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD
Operating Voltage
2.5
5.5
V
I
DD
Operating Current
5V
Functions enabled
2
mA
2.5V
No load
0.8
mA
I
STB
Standby Current
2.5V
Functions disabled or EN=1
1
A
G
DV
Detection Level
5V
f
IN
=305~640Hz
36
0
dBm
2.5V
ENV=1
42
8
dBm
G
RL
Rejection Level
All frequency, ENV=0
50
dBm
f
RL
Rejection Out-band
Frequency
V 0 dBm, ENV=0
200
Hz
f
RH
800
Hz
t
QI
Detection Pause Time
V
SIN
50dBm, ENV=0
40
ms
t
DD
Detection Signal Time
In-band signal input, ENV=1
40
ms
t
B
Rejection Pause Time
V
SIN
50dBm, ENV=1
20
ms
t
DH
Envelope Output Delay Time
Time for high output
40
ms
t
DI
Time for low output
40
ms
t
RD
Rejection Noise Time
V
SIN
=Any signal, ENV=0
20
ms
t
ST
Oscillator Start-up Time
0.8
2
sec
Z
I
Input Impedance
f
IN
=200~3.4kHz
1.0
M
V
REF
Reference Voltage
No load
2.4
2.5
2.6
V
Z
REF
Output Impedance
10
20
M
V
IH
Logic Input High Voltage
5V
3.5
V
V
IL
Logic Input Low Voltage
5V
1.5
V
I
IH
Logic Input High Current
5V
V
IH
=0.5V
0.1
A
I
IL
Logic Input Low Current
5V
V
IL
=0V
0.1
A
I
OH
Output High Current
5V
V
OH
=4.5V
0.5
mA
I
OL
Output Low Current
5V
V
OL
=0.5V
2.0
mA
I
SO
Pull-down Current
5V
25
35
A
HT9020B
Rev. 1.20
3
March 31, 2003
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