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MC145444P bảng dữ liệu(PDF) 4 Page - Motorola, Inc |
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MC145444P bảng dữ liệu(HTML) 4 Page - Motorola, Inc |
4 / 12 page MC145444 MOTOROLA 4 BAND–PASS FILTER CHARACTERISTICS (RxA to FTLC) (VCC = + 5.0 V ± 10%, TA = – 20 to + 70°C) Characteristic Symbol Conditions Min Typ Max Unit FTLC Output Impedance ROFT 10 — 50 k Ω Adjacent Channel Rejection REJ VRXA = – 12 dBm — 50 — dB Pass–Band Gain GPAS — 10 — dB Group Delay Low–Band Filter 930 – 1230 Hz — 700 — µs High–Band Filter 1600 – 1900 Hz — 800 — DTMF CHARACTERISTICS (VCC = + 5.0 V ± 10%, TA = – 20 to + 70°C) Characteristic Symbol Conditions Min Typ Max Unit Tone Output Level Low Group Vfl* — 3 — dBm High Group Vfh* — 4 — High Group Pre Emphasis PE Attenuator = 0 dB RTLA ∞ 0 — 3 dB DTMF Distortion DIST RTLA = ∞ Crystal Frequency — 5 — % DTMF Frequency Variation ∆fV Crystal Frequency 3.579545 MHz – 1 — 1 % Out–of–Band Energy VOE* Figure 1 dB Setup Time tosc — 4 — ms *VTXA1 – VTXA2, RL = 1.2 kΩ CPTD CHARACTERISTICS (VCC = + 5.0 V ± 10%, TA = – 20 to + 70°C) Characteristic Symbol Conditions Min Typ Max Unit Band–Pass Filter Center Frequency fc — 400 — Hz Band–Pass Filter – 3 dB Band Width ∆BW — 140 — Hz Tone Detect Level OFF to ON VTDON CDA 1 2 V — – 44 — dBm ON to OFF VTDOF CDA = 1.2 V — – 47 — Tone Detect Timing OFF to ON TTDON fin = 400 Hz — 10 — ms ON to OFF TTDOF — 25 — DEMODULATOR CHARACTERISTICS (VCC = + 5.0 V ± 10%, TA = – 20 to + 70°C) Characteristic Symbol Conditions Min Typ Max Unit Bit Bias ID Input Level = – 24 dBm — 5 — % Bit Error Rate BER Input Level = – 24 dBm CCITT Line Simulation 511 Bit Pattern S/N = 5 dB — 0.00001 — — SWITCHING CHARACTERISTICS (VCC = + 5.0 V ± 10%, TA = – 20 to + 70°C) Characteristic Symbol Conditions Min Typ Max Unit Setup Times DATA to SCK tsu 50 — — ns SCK to ENB 50 — — ns Hold Time SCK to DATA th 50 — — ns Recovery Time ENB to SCK trec 50 — — ns Input Rise Time tr — — 2 µs Input Fall Time tf — — 2 µs Input Pulse Width ENB, SCK tw 50 — — ns |
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