L9310 datasheet(21/60 Pages) AGERE

Part #	L9310

Description	Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device

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Manufacturer	AGERE [Agere Systems]

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21 / 60 page

Data Sheet

July 2001

Full-Feature SLIC, Ringing Relay, and Test Access Device

L9310 Line Interface and Line Access Circuit

Agere Systems Inc.

21

Electrical Characteristics (continued)

Ring Trip Detector

Table 6. Ring Trip Detector

1. The ringing source may be either of the following:

a.) The ringing source consists of the ac and dc voltages added together (battery-backed ringing); the ringing return is ground.

b.) The ringing source consists of only the ac voltage (earth-backed ringing); the ringing return is the dc voltage.

2. NDET must also indicate ring trip when the ac ringing voltage is absent (<5 Vrms) from the ringing source.

3. Pretrip ringing must not be tripped by a 10 k

Ω resistor in parallel with an 8 µF capacitor applied across tip and ring.

PPM

Table 7. PPM

1. PPM signal should be ac coupled into PPMIN.

2. This parameter is not tested in production, it is guaranteed by design and characterization.

Parameter

Min

Typ

Max

Unit

Voltage at Input that will Cause Ring Trip After Appropriate

Zero Crossings

±2.5

±3

±3.5

V

Voltage at Input that will Cause Immediate Ring Trip

±12

±15

±18

V

Ringing Source1:

Frequency (f)

dc Voltage

ac Voltage

19

–39.5

60

20

—

28

–57

105

Hz

V

Vrms

Ring Trip (NDET = 0)2, 3:

Loop Resistance

Trip Time

NDET Valid

2000

—

200

80

Ω

ms

Parameter

Min

Typ

Max

Unit

PPM Source1:

Frequency (f1)

Frequency (f2)

Input Signal

11.88

15.80

—

12

16

—

12.12

16.20

1.0

kHz

Vrms

Signal Gain (from PPMIN to amplifier outputs)

9

10

11

—

Harmonic Distortion2

——

5

%

Isolation (nontest states)

65

—

dB

Isolation (test modes)

50

—

dB

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