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CMX625P4 датащи(PDF) 28 Page - CML Microcircuits |
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CMX625P4 датащи(HTML) 28 Page - CML Microcircuits |
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28 / 34 page ![]() ISDN TA POTS Interface CMX625 2001 Consumer Microcircuits Limited 28 D/625/2 1.7.1.3 Operating Characteristics For the following conditions unless otherwise specified: VDD = 2.7V at Tamb = 25°C and VDD = 3.0V to 5.5V at Tamb = -40 to +85°C, 0dBm = 775mVrms = 0dBm0. DC Parameters Notes Min. Typ. Max. Unit IDD All Enabled, VDD = 5.0V 1 - 6.9 - mA All Disabled, VDD = 5.0V 1 - 140 - µA DTMF Rx only, VDD = 5.0V 1 - 2.4 - mA Tx (tones, SPM) only, VDD = 5.0V 1 - 3.5 - mA Tx Output Buffer only Enabled, VDD = 5.0V 1 - 1.8 - mA PCM Codec only, VDD = 5.0V 1 - 3.1 - mA All Enabled, VDD = 3.3V 1 - 5.0 - mA All Disabled, VDD = 3.3V 1 - 80 - µA DTMF Rx only, VDD = 3.3V 1 - 1.6 - mA Tx (tones, SPM) only, VDD = 3.3V 1 - 2.3 - mA Tx Output Buffer only Enabled, VDD = 3.3V 1 - 1.3 - mA PCM Codec only, VDD = 3.3V 1 - 2.3 - mA Logic ‘1’ Input Level (CMOS inputs) 3 70% - - V Logic ‘0’ Input Level (CMOS inputs) 3 - - 30% V Logic Input Leakage Current (Vin = 0 to VDD) 3 -1.0 - +1.0 µA Logic ‘1’ Input Level (TTL inputs) 3 2.0 - - V Logic ‘0’ Input Level (TTL inputs), Vdd = 3.3V-5.5V 3, 13 - - 0.8 V Output Logic ‘1’ Level DD, DU (IOH = 4mA) 14 0.8 - - VDD Output Logic ‘0’ Level DD DU (IOL = 6mA) 14 - - 0.4 V Output Logic ‘0’ Level IRQN (IOL = 3mA) 14 - - 0.4 V IRQN O/P ‘Off State Current (VOUT = VDD) - - 1.0 µA FSK Encoder and Tx UART Notes Min. Typ. Max. Unit Level at TONEFSK pin 4 -1.0 0 1.0 dBm Twist (Mark level w.r.t. Space level) -2.0 0 +2.0 dB Tx 1200bits/sec (V23 mode) Baud Rate (set by UART and DCL) 1194 1200 1206 Baud Mark (Logical 1) Frequency 1297 1300 1303 Hz Space (Logical 0) Frequency 2097 2100 2103 Hz Tx 1200bits/sec (Bell 202 mode) Baud Rate (set by UART and DCL) 1194 1200 1206 Baud Mark (Logical 1) Frequency 1197 1200 1203 Hz Space (Logical 0) Frequency 2197 2200 2203 Hz TONEFSK Signal Level Notes Min. Typ. Max. Unit Level at TONEFSK pin for: Single tone 4 -1.0 0 1.0 dBm Dual tone (per tone) 4 -4.0 -3.0 -2.0 dBm DTMF High Frequency Group 4 -4.0 -3.0 -2.0 dBm DTMF Low Frequency Group 4 -6.0 -5.0 -4.0 dBm Output Impedance - 10.0 - k Ω Tone frequency resolution -2.5 - 2.5 Hz Tone output distortion 5 - 0.8 - % |
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