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PDF Le79R79-1DJC Data sheet ( Hoja de datos )
| Número de pieza | Le79R79-1DJC | |
| Descripción | Ringing Subscriber Line Interface Circuit | |
| Fabricantes | Zarlink | |
| Logotipo |  |
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™
Le79R79
Ringing Subscriber Line Interface Circuit
VE580 Series
APPLICATIONS
Ideal for short-loop applications
Ideal for ISDN-TA and fixed radio access applications
Integrated Access Devices (IADs)
Network Interface Units (NIUs)
Cable Modems
DSL Modems
Set Top / House Side Boxes
Intelligent PBX
Pain Gain
FXS Cards
Voice over ISDN or T1/E1
Smart Residential Gateways
WLL, APON, FITL, NGN, and all other short-loop CPE/
Enterprise telephony applications
FEATURES
Through trapezoidal ringing
On-chip ring-trip detector
Low standby state power
Battery operation:
— VBAT1: –40.5 to –75 V
— VBAT2: –19 V to VBAT1
On-chip battery switching and feed selection
On-hook transmission
Two-wire impedance set by single external impedance
Programmable constant-current feed
Programmable Open Circuit voltage
Programmable loop-detect threshold
Current gain = 1000
Ground-key detector
Polarity reversal option available
Internal VEE regulator (no external –5 V power supply
required)
RELATED LITERATURE
080917 Ve790 Series RSLIC Device Product Brief
080158 Le79R70/79/100/101 Technical Overview
080914 Le79R79 RSLIC Device User’s Guide
080810 Le71HR0021 Reference Design User’s Guide
080255 Le71HE0040J Evaluation Board User’s Guide
080458 Le79R100/101 v. Le79R79 Comparison Brief
080753 Le58QL02/021/031 QLSLAC™ Data Sheet
ORDERING INFORMATION
Device1
Le79R79-1DJC
Le79R79-2DJC
Le79R79-3DJC
Le79R79-1FQC
Le79R79-2FQC
Package Type2, 3 Packing4
32-pin PLCC
(Green package)
Tube
32-pin QFN
(Green package)
Tray
-1: 52 dB Longitudinal Balance, Polarity Reversal
-2: 63 dB Longitudinal Balance, Polarity Reversal
-3: 52 dB Longitudinal Balance, No Polarity Reversal
1. Zarlink reserves the right to fulfill all orders for this device with
parts marked with the "Am" part number prefix until all inventory
bearing this mark has been depleted. Note that parts marked with
either the "Am" or the "Le" part number prefix are equivalent
devices in terms of form, fit, and function—the prefix appearing on
the topside mark is the only difference.
2. Due to size constraints, QFN devices are marked by omitting the
“Le” prefix and the performance grade dash character. For
example, Le79R79-1FQC is marked 79R791FQC.
3. The green package meets RoHS Directive 2002/95/EC of the
European Council to minimize the environmental impact of
electrical equipment.
4. For delivery using a tape and reel packing system, add a "T" suffix
to the OPN (Ordering Part Number) when placing an order.
DESCRIPTION
The Le79R79 Ringing SLIC device is a bipolar monolithic SLIC
that offers on-chip ringing. Designers can achieve significant
cost reductions at the system level for short-loop applications
by integrating the ringing function on chip. Examples of such
applications would be ISDN terminal adaptors, fiber-in-the-
loop, radio-in-the-loop, hybrid fiber/coax and video telephony
(home-side) boxes. The Le79R79 Ringing SLIC device can
provide sufficient voltage to meet the stringent LSSGR five-
ringer equivalent specification. Using a CMOS-compatible
input waveform and wave shaping R-C network, the Le79R79
Ringing SLIC device can provide trapezoidal wave ringing to
meet various design requirements.
See the Le79R79 Block Diagram, on page 4.
Document ID#: 080152 Date: Sep 19, 2007
Rev:
O Version: 2
Distribution: Public Document
1 page  
CONNECTION DIAGRAMS
Le79R79
Data Sheet
RYE
RYOUT1
B2EN
VBAT1
D1
E1
C3
C2
DET
4 3 2 1 32 31 30
5 29
6 28
7 27
8 26
9
32-pin PLCC
25
10 24
11 23
12 22
13 21
14 15 16 17 18 19 20
RTRIP1
RTRIP2
HPB
HPA
RINGIN
RDCR
VTX
VNEG
RSN
Top View
RYE
RYOUT1
B2EN
VBAT1
D1
E1
C3
C2
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
32-pin QFN
5 20
6 19
7
EXPOSED PAD
18
8 17
9 10 11 12 13 14 15 16
RTRIP2
HPB
HPA
RINGIN
RDCR
VTX
VNEG
RSN
Note:
1. Pin 1 is marked for orientation.
2. NC = No connect.
3. The thermally enhanced QFN package features an exposed pad on the underside which must be electrically tied to VBAT1.
5
Zarlink Semiconductor Inc.
5 Page 
Supply Currents
Description
ICC,
On-hook VCC supply current
INEG,
On-hook VNEG supply current
IBAT,
On-hook VBAT supply current
Le79R79
Test Conditions (See Note 1)
Open Circuit state
Standby state
OHT state
Active state-normal
Open Circuit state
Standby state
OHT state
Active state-normal
Open Circuit state
Standby state
OHT state
Active state-normal
Min Typ
3.0
3.2
6.2
6.5
0.1
0.1
0.7
0.7
0.45
0.6
2.0
2.7
Logic Inputs
(Applies to C3–C1, D2–D1, E1, and B2EN).
Description
VIH, Input High voltage
VIL, Input Low voltage
IIH, Input High current
IIL, Input Low current
Test Conditions
Logic Output
(DET)
Description
VOL, Output Low voltage
VOH, Output High voltage
Test Conditions (See Note 1)
IOUT = 0.8 mA, 15 kΩ to VCC
IOUT = –0.1 mA, 15 kΩ to VCC
Min
2.0
–75
–400
Typ
Min Typ
2.4
Ring-Trip Detector Input
Description
Ring detect accuracy
Test Conditions (See Note 1)
Min Typ
IRTD
=
--B----A-----T----1------–-----1-
RRT1
+
24
µA
•
335
–10
Ring Signal
Description
Test Conditions (See Note 1)
VAB, Ringing
VAB, Ringing offset
BAT1 = −75 V, Ringload = 1570 Ω
VRINGIN = 2.5 V
∆VAB ⁄ ∆VRINGIN(RINGIN gain)
Min Typ
66 69
−10 0
150 180
Ground-Key Detector Thresholds
Description
Ground-key resistive threshold
Ground-key current threshold
Test Conditions (See Note 1)
B to ground
B to ground
Min Typ
25
11
Data Sheet
Max Unit Note
4.5
5.5
8.0
9.0
0.2
0.2
1.1 mA
1.1
1.0
1.5
4.0
5.0
Max Unit Note
V
0.8
40 µA
Max Unit Note
0.40
V
Max Unit Note
+10 %
Max Unit Note
Vpk 7
10 V
210
Max Unit Note
10 kΩ
mA
11
Zarlink Semiconductor Inc.
11 Page | ||
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