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SI2400 Datasheet, PDF (4/76 Pages) List of Unclassifed Manufacturers – V.22BIS ISOMODEM™ WITH INTEGRATED GLOBAL DAA
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Si2400
Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter1
Symbol Test Condition Min2 Typ Max2 Unit
Ambient Temperature
TA
K-Grade
0
25
70
°C
Ambient Temperature
TA
B-Grade
–40
25
85
°C
Si2400 Supply Voltage, Digital3
VD
3.0 3.3/5.0 5.25
V
Notes:
1. The Si2400 specifications are guaranteed when the typical application circuit (including component tolerance) and any
Si2400 and any Si3015 are used. See Figure 3 on page 9 for typical application circuit.
2. All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated.
3. The digital supply, VD, can operate from either 3.3 V or 5.0 V. The Si2400 interface supports 3.3 V logic when operating
from 3.3 V. The 3.3 V operation applies to both the serial port and the digital signals CTS, CLKOUT, GPIO1–4, and
RESET.
Table 2. DAA Loop Characteristics
(VD = 3.0 to 3.6 V or 4.75 to 5.25 V, TA = 0 to 70°C for K-Grade, TA = –40 to 85°C for B-Grade)
Parameter
Symbol Test Condition Min Typ
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
DC Termination Voltage
On Hook Leakage Current
Operating Loop Current
Operating Loop Current
DC Ring Current
Ring Detect Voltage
Ring Detect Voltage
Ring Frequency
Ringer Equivalence Number*
VTR
IL = 20 mA, ACT = 1
—
—
DCT = 11 (CTR21)
VTR
IL = 42 mA, ACT = 1
—
—
DCT = 11 (CTR21)
VTR
IL = 50 mA, ACT = 1
—
—
DCT = 11 (CTR21)
VTR
IL = 60 mA, ACT = 1
40
—
DCT = 11 (CTR21)
VTR
IL = 20 mA, ACT = 0
—
—
DCT = 01 (Japan)
VTR IL = 100 mA, ACT = 0 11
—
DCT = 01 (Japan)
VTR
IL = 20 mA, ACT = 0
—
—
DCT = 10 (FCC)
VTR IL = 100 mA, ACT = 0 12
—
DCT = 10 (FCC)
ILK
VBAT = –48 V
—
—
ILP
FCC/Japan Modes
13
—
ILP
CTR21
13
—
—
—
VRD
VRD
FR
REN
RT = 0
RT = 1
11
—
17
—
15
—
—
—
*Note: C15, R14, Z2, and Z3 not installed.
Max
7.5
Unit
V
14.5
V
40
V
—
V
6.0
V
—
V
7.5
V
—
V
1
µA
120
mA
60
mA
20
µA
22
VRMS
33
VRMS
68
Hz
0.2
4
Rev. 0.95
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