LE79R79-2QC Legerity, Inc., LE79R79-2QC Datasheet
LE79R79-2QC
Manufacturer Part Number
LE79R79-2QC
Description
Manufacturer
Legerity, Inc.
Datasheet
1.LE79R79-2QC.pdf
(23 pages)
Specifications of LE79R79-2QC
Case
BGA
Date_code
03+
Am79R79*/Le79R79
Ringing Subscriber Line Interface Circuit
DISTINCTIVE CHARACTERISTICS
I Ideal for short-loop applications
I Ideal for ISDN terminal adaptor and fixed radio
I On-chip ringing with on-chip ring-trip detector
I Low standby state power
I Battery operation:
I On-chip battery switching and feed selection
I On-hook transmission
I Two-wire impedance set by single external
BLOCK DIAGRAM
*This product can be ordered using ordering part numbers Am79R79 or Le79R79. The Am79R79 ordering part number will be
discontinued after 6/30/02, at which time the product will only be available using the Le79R79 ordering part number.
access applications
— V
— V
impedance
BAT1
BAT2
: –40.5 V to –75 V
: –19 V to V
B(RING)
RTRIP1
RTRIP2
VBAT1
VBAT2
A(TIP)
HPA
HPB
BAT1
Two-Wire
Interface
Switch
Driver
VCC VNEG
Ground-Key
Power-Feed
Off-Hook
Ring-Trip
Transmission
Detector
Detector
Detector
Controller
Signal
I Programmable constant-current feed
I Programmable Open Circuit voltage
I Programmable loop-detect threshold
I Current gain = 1000
I Ground-key detector
I Tip Open state for ground-start lines
I Polarity reversal option available
I Internal V
I Two on-chip relay drivers and snubber circuits
I Space Saving Package Options (8x8 QFN)
BGND
supply required)
AGND/DGND
Input Decoder
and Control
EE
Relay
Driver
regulator (no external –5 V power
Relay
Driver
Document ID# 080152
Rev:
Distribution:
I
Public Document
E1
RINGIN
RYOUT2
RYE
RYOUT1
D1
D2
C1
C2
C3
DET
RD
VTX
RSN
RDC
RDCR
RSGL
RSGH
B2EN
Date:
Version: 1
Mar 25, 2002
Related parts for LE79R79-2QC
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
TQFP-44
Manufacturer:
Legerity, Inc.
Datasheet:
Part Number:
Description:
PLCC44
Manufacturer:
Legerity, Inc.
Datasheet: