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TP3070 数据表(PDF) 21 Page - National Semiconductor (TI) |
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TP3070 数据表(HTML) 21 Page - National Semiconductor (TI) |
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21 / 26 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 (−40˚C to +85˚C for TP3070-X) by correlation with 100% electrical testing at T A = 25˚C. f = 1015.625 Hz, VFXI = 0 dBm0, D R0orDR1 = 0 dBm0 PCM code. Transmit and receive gains programmed for maximum 0 dBm0 test levels (0 dB gain), hybrid balance filter disabled. All other limits are assured by correlation with other production tests and/or product de- sign 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 CROSSTALK CT X-R Transmit to Receive Crosstalk, 0 dBm0 Transmit Level f = 300 Hz–3400 Hz −90 −75 dB D R = Idle Code CT R-X Receive to Transmit Crosstalk, 0 dBm0 Receive Level f = 300 Hz–3400 Hz −90 −70 dB (Note 13) Note 12: Measured by grounded input at VFXI. Note 13: PPSRX, NPSRX, and CTR–X are measured with a −50 dBm0 activation signal applied to VFXI. Note 14: A signal is Valid if it is above VIHor below VIL and Invalid if it is between VIL and VIH. For the purposes of this specification the following conditions apply: a) All input signals are defined as: VIL = 0.4V, VIH = 2.7V, tR < 10 ns, tF < 10 ns. b) tR is measured from VIL to VIH.tF is measured from VIH to VIL. c) Delay Times are measured from the input signal Valid to the output signal Valid. d) Setup Times are measured from the data input Valid to the clock input Invalid. e) Hold Times are measured from the clock signal Valid to the data input Invalid. f) Pulse widths are measured from VIL to VIL or from VIH to VIH. Note 15: A multi-tone test technique is used. www.national.com 21 |
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