le9531cmqc Zarlink Semiconductor, le9531cmqc Datasheet - Page 9
le9531cmqc
Manufacturer Part Number
le9531cmqc
Description
Ringing Subscriber Line Interface Circuit
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE9531CMQC.pdf
(34 pages)
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Exposed Pad
Exposed Pad
(eTQFP)
TLDEN
AGND
BGND
RSVD
(QFN)
Name
VTX
TLD
Pin
TXI
Output
Type
Input
Input
Input
GND
GND
AC Output Voltage. Output of internal AX amplifier. The voltage at this pin is directly
proportional to the differential tip/ring current.
AC/DC Separation. Input to internal AAC amplifier. Connect a capacitor from this pin
to VTX.
Test Load. A test load may be connected to this pin.
Test Load Enable. Active HIGH to turn on test switch. Drive it LOW or leave it
floating if not in use. It has an internal 100 k pull-down.
Analog Ground. Ground return for VCC.
Battery Ground. Ground return for VBAT.
Reserved. Leave it floating on PCB layout.
Thermal Pad. Connect to a ground plane on the printed circuit board for thermal
conduction.
Thermal and Circuit Ground. Connect to a ground plane on the printed circuit board
for thermal conduction and for analog signal ground and battery ground.
Zarlink Semiconductor Inc.
Le9531
9
Description
Data Sheet
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