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LS256 数据表(PDF) 5 Page - STMicroelectronics

部件名 LS256
功能描述  TELEPHONE SPEECH CIRCUIT WITH MULTIFREQUENCY TONE GENERATOR INTERFACE
PDF  8 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LS256 数据表(HTML) 5 Page - STMicroelectronics

  LS256 Datasheet HTML 1Page - STMicroelectronics LS256 Datasheet HTML 2Page - STMicroelectronics LS256 Datasheet HTML 3Page - STMicroelectronics LS256 Datasheet HTML 4Page - STMicroelectronics LS256 Datasheet HTML 5Page - STMicroelectronics LS256 Datasheet HTML 6Page - STMicroelectronics LS256 Datasheet HTML 7Page - STMicroelectronics LS256 Datasheet HTML 8Page - STMicroelectronics  
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ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Conditions
Min.
Typ. Max.
Unit
Fig.
SPEECH OPERATION (continued)
GR
Sidetone
F = 1kHz, Tamb =25
°C, S1 in (b)
IL = 52mA
IL = 25mA
36
36
dB
2
ZML
Line Matching Impedance
VRI = 0.3V, f = 1kHz
IL = 12 to 80mA
500
600
700
Ω
MULTIFREQUENCY SYNTHESIZER INTERFACE
VDD
MF Supply Voltage
(standby and operation)
IL = 12 to 80mA
2.4
2.5
V
IDD
MF Supply Current
Stand by
Operation
IL = 12 to 80mA
IL = 12 to 80mA ; S2 in (b)
0.5
2
mA
mA
MF Amplifier Gain
IL = 12 to 80mA, fMF in = 1kHz
VMF in = 80mV
15
17
dB
4
VI
DC Input Voltage Level (pin 14)
VM Fin = 80mV
3VDD
V
RI
Input Impedance (pin 14)
VM Fin = 80mV
40
k
Ω
d
Distortion
VM Fin = 110mV
IL = 12 to 80mA
2%
4
Starting Delay Time
IL = 12 to 80mA
5
ms
Muting Threshold Voltage (pin 3)
Speech Operation
1
V
MF Operation
1.6
V
Muting Stand by Current (pin 3)
IL = 12 to 80mA
– 10
µA
Muting Operating Current (pin 3)
IL = 12 to 80mA, S2 in (b)
+ 10
µA
LS256
5/8



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