參數(shù)資料
型號: HT9020
廠商: Holtek Semiconductor Inc.
英文描述: Call Progress Tone Decoder & ABR Controller
中文描述: 呼叫進展音解碼器
文件頁數(shù): 5/12頁
文件大小: 477K
代理商: HT9020
Absolute Maximum Ratings*
Supply Voltage ............................... –0.3V to 6V
Storage Temperature.................–55
°
C to 150
°
C
Operating Temperature ..............–20
°
C to 75
°
C
Input Voltage ............... V
SS
–0.3V to V
DD
+0.3V
*Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-
mum 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 reliability.
Electrical Characteristics
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
V
DD
Operating Voltage
CPT mode
2.5
5.5
V
ABR mode
2.0
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
E N=1
1
μ
A
G
DV
Detection Level
5V
f
IN
=305~640Hz
–36
0
dBm
2.5V
E NV=1
–42
–8
dBm
G
RL
Rejection Level
All frequency, E NV=0
–50
dBm
f
RL
f
RH
Rejection Out-band
Frequency
V
0 dBm, E NV=0
800
200
Hz
t
DD
Detection Signal Time
In-band signal input,
E NV=1
40
ms
t
RD
Rejection Noise Time
Any signal input,
E NV=0
20
ms
t
DH
t
DL
E nvelope Output
Delay Time
Time to output high
Time to output low
40
ms
t
DV
Data Valid Output Time
Time to output high/low
1.05
1.16
1.2
sec
t
SU
Data Setup Time
3
4
5
ms
t
I
Interval Time
Internal signal
2.32
sec
t
IP
Interval Pause Time
Internal signal
8
ms
t
CL
Clear Time
250
ns
t
ST
OSC 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
HT9020
5
21st Aug ’98
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