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SI2439 数据表(PDF) 7 Page - Silicon Laboratories

部件名 SI2439
功能描述  V.92 AND V.34 ISOMODEM WITH GLOBAL DAA
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制造商  SILABS [Silicon Laboratories]
网页  http://www.silabs.com
标志 SILABS - Silicon Laboratories

SI2439 数据表(HTML) 7 Page - Silicon Laboratories

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Si2494/39
Rev. 1.0
7
Table 4. Loop Characteristics
(VD = 3.0 to 3.6 V, TA = 0 to 70 °C for F-grade, TA = –40 to 85 °C for G-grade)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
DC Termination Voltage
VTR
IL = 20 mA, ILIM1 =0
DCV = 00, MINI = 11, DCR = 0
——
6.0
V
DC Termination Voltage
VTR
IL = 120 mA, ILIM = 0
DCV = 00, MINI = 11, DCR = 0
9—
V
DC Termination Voltage
VTR
IL =20mA, ILIM =0
DCV = 11, MINI = 00, DCR = 0
——
7.5
V
DC Termination Voltage
VTR
IL = 120 mA, ILIM = 0
DCV = 11, MINI = 00, DCR = 0
9—
V
DC Termination Voltage
VTR
IL =20mA, ILIM =1
DCV = 11, MINI = 00, DCR = 0
——
7.5
V
DC Termination Voltage
VTR
IL =60mA, ILIM =1
DCV = 11, MINI = 00, DCR = 0
40
V
DC Termination Voltage
VTR
IL =50mA, ILIM =1
DCV = 11, MINI = 00, DCR = 0
——
40
V
On-Hook Leakage Current
ILK
VTR = –48 V
5
µA
Operating Loop Current
ILP
MINI = 00, ILIM = 0
10
120
mA
Operating Loop Current
ILP
MINI = 00, ILIM = 1
10
60
mA
DC Ring Current
DC current flowing through ring
detection circuitry
—1.5
3
µA
Ring Detect Voltage2
VRD
RT = 0
12
15
18
VRMS
Ring Detect Voltage2
VRD
RT = 1
18
21
25
VRMS
Ring Frequency
FR
15
68
Hz
Ringer Equivalence Number
REN
0.2
Notes:
1.
ILIM = U67, bit 9; DCV = U67, bits 3:2; MINI = U67, bits 13:12; DCR = U67, bit 7; RT = U67, bit 0.
2.
The ring signal is guaranteed to not be detected below the minimum. The ring signal is guaranteed to be detected
above the maximum.
Si3018
TIP
RING
10 µF
600
IL
VTR
+


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