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L9311 Fiches technique(PDF) 22 Page - Agere Systems |
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L9311 Fiches technique(HTML) 22 Page - Agere Systems |
22 / 50 page Data Sheet July 2001 Ringing Relay, and GR-909 Test Access L9311 Full-Feature SLIC with High Longitudinal Balance, 22 Agere Systems Inc. Electrical Characteristics (continued) ac Feed Characteristics Table 11. ac Feed Characteristics 1. Set externally either by discrete external components or a third- or fourth-generation codec. Any complex impedance R1 + R2 || C between 150 Ω and 1400 Ω can be synthesized. 2. This parameter is not tested in production. It is guaranteed by design and device characterization. 3. VITR transconductance depends on the resistor from ITR to VTX. This gain assumes an ideal 6.34 k Ω, the recommended value. Positive cur- rent is defined as the differential current flowing from PT to PR. Parameter Min Typ Max Unit ac Termination Impedance1 150 600 1400 Ω Total Harmonic Distortion (200 Hz—4 kHz)2: Off-hook On-hook — — — — 0.3 1.0 % % Transmit Gain3 f = 1004 Hz, 1020 Hz: PT/PR Current to VITR –291 –300 –309 V/A Receive Gain, f = 1004 Hz, 1020 Hz Open Loop: RCVP or RCVN to PT—PR (gain = 8) RCVP or RCVN to PT—PR (gain = 2) 7.76 1.94 8 2 8.24 2.06 — — ac Feed Resistance (includes internal SLIC ac resistance and break switch resistance) 50 75 110 Ω Gain vs. Frequency (transmit and receive)2 900 Ω = 2.16 µF Termi- nation, 1004 Hz Reference: 200 Hz—300 Hz 300 Hz—3.4 kHz 3.4 kHz—20 kHz 20 kHz—266 kHz –0.3 –0.05 –3.0 — 0 0 0 — 0.05 0.05 0.05 2.0 dB dB dB dB Gain vs. Level (transmit and receive)2 0 dBV Reference: –55 dB to +3.0 dB –0.05 0 0.05 dB Idle-channel Noise (tip/ring) 600 Ω Termination: Psophometric C-Message 3 kHz Flat — — — –82 8 — –77 13 20 dBmp dBrnC dBrn Idle-channel Noise (VTX) 600 Ω Termination: Psophometric C-Message 3 kHz Flat — — — –82 8 — –77 13 20 dBmp dBrnC dBrn |
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