SI3015-FS Silicon Laboratories Inc, SI3015-FS Datasheet - Page 87

• Manufacturer Part Number: SI3015-FS
• Description: SI2400 ISOMODEM LINE-SIDE
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3015-FS

• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Baud Rates: -

Pin Descriptions: Si3015
Pin #
10
12
13
11
1
2
3
4
5
6
7
8
9
Pin Name
VREG2
REXT2
RNG1
RNG2
VREG
REXT
IGND
DCT
QE2
C1B
REF
QB
QE
Transistor Emitter 2.
Connects to the emitter of Q4.
DC Termination.
Provides dc termination to the telephone network
Isolated Ground.
Connects to ground on the line-side interface. Also connects to capacitor C2.
Isolation Capacitor 1B.
Connects to one side of isolation capacitor C1.
Ring 1.
Connects through a capacitor to the TIP lead of the telephone line. Provides the ring
and caller ID signals to the Si2400.
Ring 2.
Connects through a capacitor to the RING lead of the telephone line. Provides the ring
and caller ID signals to the Si2400.
Transistor Base.
Connects to the base of transistor Q3.
Transistor Emitter.
Connects to the emitter of Q4.
Voltage Regulator.
Connects to an external capacitor to provide bypassing for an internal power supply.
Voltage Regulator 2.
Connects to an external capacitor to provide bypassing for an internal power supply.
Reference.
Connects to an external resistor to provide a high accuracy reference current.
External Resistor 2.
Sets the complex ac termination impedance.
External Resistor.
Sets the real ac termination impedance.
Table 31. 3015 Pin Descriptions
RNG1
RNG2
IGND
DCT
QE2
C1B
QB
QE
1
2
3
4
5
6
7
8
Rev. 1.1
16
15
14
13
12
10
11
9
Description
FILT2
FILT
RX
REXT
REXT2
REF
VREG2
VREG
Si2400
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