SI2438FT18-EVB Silicon Laboratories Inc, SI2438FT18-EVB Datasheet - Page 104

• Manufacturer Part Number: SI2438FT18-EVB
• Description: BOARD EVAL SI2438+SI3018 24PIN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2438FT18-EVB

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Pin #
QFN
19
20
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
Si3050 + Si3011/18/19
104
TSSOP
SOIC/
Pin #
10
12
13
14
11
1
2
3
4
5
6
7
8
9
Pin Name
VREG2
VREG
RNG1
RNG2
DCT3
IGND
DCT
C1B
C2B
QE2
NC
QE
NC
QB
NC
RX
SC
IB
No connect.
Transistor Emitter.
Connects to the emitter of Q3.
DC Termination.
Provides dc termination to the telephone network.
Receive Input.
Serves as the receive side input from the telephone network.
Internal Bias.
Provides a bias voltage to the device.
Isolation Capacitor 1B.
Connects to one side of isolation capacitor C1. Used to communicate with the
system-side device.
Isolation Capacitor 2B.
Connects to one side of isolation capacitor C2. Used to communicate with the
system-side device.
Voltage Regulator.
Connects to an external capacitor to provide bypassing for an internal power supply.
Ring 1.
Connects through a resistor to the TIP lead of the telephone line. Provides the ring and caller
ID signals to the DAA.
Isolated Ground. Connects to ground on the line-side interface.
Ring 2.
Connects through a resistor to the RING lead of the telephone line. Provides the ring and
caller ID signals to the DAA.
Voltage Regulator 2.
Connects to an external capacitor to provide bypassing for an internal power supply.
No connect.
SC Connection.
Enables external transistor network. Should be tied through a 0  resistor to I
Transistor Emitter 2.
Connects to the emitter of Q4.
Transistor Base.
Connects to the base of transistor Q4.
DC Termination 3.
Provides dc termination to the telephone network.
No Connect.
Table 27. Si3011/18/19 Pin Descriptions
Rev. 1.4
Description
GND
.