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TP3076 数据表(PDF) 16 Page - National Semiconductor (TI) |
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TP3076 数据表(HTML) 16 Page - National Semiconductor (TI) |
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16 / 18 page  Transmission Characteristics (Continued) Unless otherwise noted, limits printed in BOLD characters are guaranteed for V CC = +5V ±5%,VBB = −5V ±5%;TA = 0˚C to +70˚C by correlation with 100% electrical testing at T A = 25˚C. f = 1015.625 Hz, VFXI = 0 dBm0, DR1 = 0 dBm0 PCM code. Transmit and receive gains programmed for maximum 0 dBm0 test levels (0 dB Gain). All other limits are assured by correla- tion with other production tests and/or product design and characterization. All signals referenced to GND. Typicals specified at V CC = +5V, VBB = −5V, TA = 25˚C. Symbol Parameter Conditions Min Typ Max Units ENVELOPE DELAY DISTORTION WITH FREQUENCY D XR Tx Delay, Relative to DXA f = 500 Hz–600 Hz 220 µs f = 600 Hz–800 Hz 145 µs f = 800 Hz–1000 Hz 75 µs f = 1000 Hz–1600 Hz 40 µs f = 1600 Hz–2600 Hz 75 µs f = 2600 Hz–2800 Hz 105 µs f = 2800 Hz–3000 Hz 155 µs D RA Rx Delay, Absolute f = 1600 Hz 200 µs D RR Rx Delay, Relative to DRA f = 500 Hz–1000 Hz −40 µs f = 1000 Hz–1600 Hz −30 µs f = 1600 Hz–2600 Hz 90 µs f = 2600 Hz–2800 Hz 125 µs f = 2800 Hz–3000 Hz 175 µs NOISE N XC Transmit Noise, C Message (Note 15) 11111111 12 15 dBrnC0 Weighted, µ-Law Selected in Gain Register N XP Transmit Noise, P Message (Note 15) 11111111 −74 −67 dBm0p Weighted, A-Law Selected in Gain Register N RC Receive Noise, C Message PCM Code is Alternating Positive 8 11 dBrnC0 Weighted, µ-Law Selected N RP Receive Noise, P Message PCM Code Equals Positive Zero −82 −79 dBm0p Weighted, A-Law Selected N RS Noise, Single Frequency f = 0 kHz to 100 kHz, Loop Around −53 dBm0 Measurement, VF XI = 0 Vrms PPSR X Positive Power Supply V CC = 5.0 VDC + 100 mVrms Rejection, Transmit f = 0 kHz–4 kHz (Note 16) 36 dBC f = 4 kHz–50 kHz 30 dBC NPSR X Negative Power Supply V BB = −5.0 VDC +100 mVrms Rejection, Transmit f = 0 kHz–4 kHz (Note 16) 36 dBC f = 4 kHz–50 kHz 30 dBC PPSR R Positive Power Supply PCM Code Equals Positive Zero Rejection, Receive V CC = 5.0 VDC + 100 mVrms Measure VF RO f = 0 Hz–4000 Hz 36 dBC f = 4 kHz–25 kHz 40 dB f = 25 kHz–50 kHz 36 dB NPSR R Negative Power Supply PCM Code Equals Positive Zero Rejection, Receive V BB = −5.0 VDC + 100 mVrms Measure VF RO f = 0 Hz–4000 Hz 36 dBC f = 4 kHz–25 kHz 40 dB f = 25 kHz–50 kHz 36 dB www.national.com 16 |
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