PBL38630/2QNT Infineon Technologies, PBL38630/2QNT Datasheet - Page 42

• Manufacturer Part Number: PBL38630/2QNT
• Description: IC LINE INTERFACE SLIC PLCC-28
• Manufacturer: Infineon Technologies
• Series: FlexiSLIC™r

Specifications of PBL38630/2QNT

• Function: Subscriber Line Interface Concept (SLIC)
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 2.8mA
• Power (watts): 730mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-PLCC
• Includes: Current Feeding, Ground Key Detector, Ring Relay Driver
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: PBL38630/2QNTT; SP000007897

Complete filtering of the 20 Hz AC component at terminal DT and DR is not necessary.
A toggling DET output can be examined by a software routine to determine the duty
cycle. When the DET output is at logic level low for more than half the time, off-hook
conditions is indicated.
8
The PBL 38630/2 SLIC incorporates a ring relay driver designed as open collector (npn),
with a current sinking capability of 50 mA. The drive transistor emitter is connected to
BGND. The relay driver has an internal zener diode clamp for inductive kick back
voltages.
9
The SLIC has two digital control inputs, C1 and C2 (see
interprets the control input condition and sets up the commanded operating state. C1
and C2 are internally pulled up.
9.1
In the Open Circuit state, the TIPX and RINGX line drive amplifiers as well as other circuit
blocks are powered down. This causes the SLIC to present a high impedance to the line.
Power dissipation is at a minimum and no detectors are active. DET output is set high.
9.2
The ring relay driver and the ring trip detector are activated and the ring trip detector is
indicating off-hook with a logic low level at the detector output.
The SLIC is in the active normal state.
9.3
TIPX is the terminal closest to ground and sources loop current while RINGX is the more
negative terminal and sinks loop current. VF signal transmission is normal. The loop
current detector is activated. The loop current detector indicates off-hook with a logic low
level and the ground key detector is indicating active ground key with a logic high level
present at the detector output.
Data Sheet
Relay Driver
Control Inputs
Open Circuit (C2, C1 = 0, 0)
Ringing (C2, C1 = 0, 1)
Active state
42
Table
2). A decoder in the SLIC
Rev. 2.0, 2005-04-14
PBL 38630/2
Relay Driver
FlexiSLIC