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LM4546B bảng dữ liệu(PDF) 5 Page - National Semiconductor (TI) |
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LM4546B bảng dữ liệu(HTML) 5 Page - National Semiconductor (TI) |
5 / 27 page Electrical Characteristics (Notes 1, 5) The following specifications apply for AV DD = 5V, DVDD = 3.3V, Sampling Frequency (Fs) = 48 kHz, single codec configuration, (primary mode) unless otherwise noted. Limits apply for T A= 25˚C. The reference for 0 dB is 1 Vrms unless otherwise specified. (Continued) Symbol Parameter Conditions LM4546B Units (Limits) Typical (Note 6) Limit (Note 7) T CO Output Valid Delay Output Delay of SDATA_IN from rising edge of BIT_CLK 5.2 15 ns (max) T RISE Rise Time BIT_CLK, SYNC, SDATA_IN or SDATA_OUT 6 ns (max) T FALL Fall Time BIT_CLK, SYNC, SDATA_IN or SDATA_OUT 6 ns (max) T RST_LOW RESET# active low pulse width For Cold Reset 1.0 µs (min) T RST2CLK RESET# inactive to BIT_CLK start up For Cold Reset 271 162.8 ns (min) T SH SYNC active high pulse width For Warm Reset 1.0 µs (min) T SYNC2CLK SYNC inactive to BIT_CLK start up For Warm Reset 162.8 ns (min) T S2_PDOWN AC Link Power Down Delay Delay from end of Slot 2 to BIT_CLK, SDATA_IN low 1 µs (max) T SUPPLY2RST Power On Reset Time from minimum valid supply levels to end of Reset 1 µs (min) T SU2RST Setup to trailing edge of RESET# For ATE Test Mode 15 ns (min) T RST2HZ Rising edge of RESET# to Hi-Z For ATE Test Mode 25 ns (max) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 2: Human body model, 100 pF discharged through a 1.5 k Ω resistor. Note 3: Machine Model, 220 pF – 240 pF discharged through all pins. Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum allowable power dissipation is PDMAX =(TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4546B, TJMAX = 150˚C. The typical junction-to-ambient thermal resistance is 74˚C/W for package number VBH48A. Note 5: All voltages are measured with respect to the ground pin, unless otherwise specified. Note 6: Typicals are measured at 25˚C and represent the parametric norm. Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 8: Loopthrough mode describes a path from an analog input through the analog mixers to an analog output. Note 9: These specifications are guaranteed by design and characterization; they are not production tested. Note 10: Out of band energy is measured from 28.8 kHz to 100 kHz relative toa1VrmsDAC output. www.national.com 5 |
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Mô tả tương tự - LM4546B |
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