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L9310 Datasheet(PDF) 21 Page - Agere Systems |
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L9310 Datasheet(HTML) 21 Page - Agere Systems |
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 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 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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