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參數(shù)資料
| 型號： | M-982-02T |
| 廠商： | CLARE INC |
| 元件分類： | 信令電路 |
| 英文描述： | Precise Call Progress Tone Detector |
| 中文描述： | TELECOM, TONE DECODER CIRCUIT, PDSO20 |
| 封裝： | PLASTIC, SOIC-20 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大小： | 200K |
| 代理商： | M-982-02T |
M-982-02
www.clare.com
3
Rev. 4
Call Progress Tones
Frequency (HZ)
Use
12
350
440
Dial Tone
400
Off
Special
440
Off
Alert Tone
440
480
Audible Ring
440
620
Pre-empt
480
Off
Bell High Tone
480
620
Reorder (Bell Low)
350
Off
Special
620
Off
Special
941
1209
DTMF “*”
425
Off
European
Specifications (continued)
Parameter
Conditions
Min
Max
Units
Notes
SIGIN pin
Voltage range
-
-6.5
VDD
V
Input impedance
f=500 Hz
80
-
k
Input spectrum
-
28
kHz
Clock
External clock
VIL
XOUT open
-
0.2
V
connected to XIN pin
VIH
XOUT open
VDD-0.2
-
V
Duty cycle
XOUT open
40
60
%
XIN, XOUT with crystal Capacitance
-
10
pF
osc. active
Internal resistance
-
20
-
MW
Power up (TPU)
PD hi to lo
-
30
ms
X358 pin
VOL
CL = 20 pF,
-
0.2
V
ISINK = -1mA
VOH
CL = 20 pF,
ISOURCE =1mA
VDD - 0.2
-
V
Duty cycle
CL = 20 pF
40
60
%
Tri-state
tEN,(High Z to Low Z)
CL = 50 pF,
-
250
ns
Operation
tDE,(Low Z to High )Z
RL = 100 kW
-
250
ns
Unless otherwise noted, V
DD - VSS = 5V, Ta = 25°C, PD at logical low state, and XRANGE at a logical high state.
Power levels are in dBm referenced to 600 ohm. DC voltages are referenced to V
SS.
Notes:
1. Per tone.
Pin Functions
Pin
Funtion
DET 1
Active high tri-state output, detect for 350 Hz.
DET 2
Active high tir-state ooutput, detect for 400/620 Hz.
(See Note.)
DET 3
Active high tri-state output, detect for 440 Hz.
DET 4
Active high tri-state output, detect for 480 Hz.
DET 5
Active high tri-state output, detect for 425 Hz.
EN
Active high enabled, when low drives STROBE low.
OE
Active high input. When low tri-state DET n pins.
SIGIN
Analog signal input (internally capacitive coupled).
STROBE
Active high output, indicates valid DET n.
V
DD
Most positive power supply input pin.
V
REF
Internally generated mid-power supply voltage
(output).
V
SS
Most negative power supply input pin.
X358
Buffered oscillator output (3.58 MHz).
XIN
Crystal oscillator or digital clock input.
XOUT
Crystal oscillator output. Used only with a crystal.
Use X358 when clock output signal is required.
XRANGE
Active low input. Adds 10 dB of gain to input stage.
MODE
Compatibility selection. Connection to VSS selects
400 Hz detection. (M-981-02 emulation.) Connection
to V
DD or no connection selects 620 Hz detection.
PD
Power-down operation, logic high inhibits internal
clock. Internal pulldown resistor.
Note: This output indicates 400 Hz detect when MODE is connected to V
SS and 620
Hz detect when open, or connected to V
DD.
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