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CS5460A-BS датащи(PDF) 6 Page - Cirrus Logic |
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CS5460A-BS датащи(HTML) 6 Page - Cirrus Logic |
6 / 54 page CS5460A 6 ANALOG CHARACTERISTICS (Continued) Notes: 7. The minimum FSCR is limited by the maximum allowed gain register value. 8. All outputs unloaded. All inputs CMOS level. 9. Definition for PSRR: VREFIN tied to VREFOUT, VA+ = VD+ = 5 V, a 150 mV zero-to-peak sinewave (frequency = 60 Hz) is imposed onto the +5 V supply voltage at VA+ and VD+ pins. The “+” and “-” input pins of both input channels are shorted to VA-. Then the CS5460A is commanded to ’continuous computation cycles’ data acquisition mode, and digital output data is collected for the channel under test. The zero-peak value of the digital sinusoidal output signal is determined, and this value is converted into the zero-peak value of the sinusoidal voltage that would need to be applied at the channel’s inputs, in order to cause the same digital sinusoidal output. This voltage is then defined as Veq. PSRR is then (in dB): 10. When voltage level on PFMON is sagging, and LSD bit is 0, the voltage at which LSD bit is set to 1. 11. Assuming that the LSD bit has been set to 1 (because PFMON voltage fell below PMLO), then if/when the PFMON voltage starts to rise again, PMHI is the voltage level (on PFMON pin) at which the LSD bit can be permanently reset back to 0 (without instantaneously changing back to 1). Attempts to reset the LSD bit before this condition is true will not be successful. This condition indicates that power has been restored. Typically, for a given sample, the PMHI voltage will be ~100 mV above the PMLO voltage. Parameter Symbol Min Typ Max Unit Dynamic Characteristics Phase Compensation Range (Voltage Channel, 60 Hz) -2.4 - +2.5 ° High Rate Filter Output Word Rate (Both Channels) OWR - DCLK/1024 - Sps Input Sample Rate DCLK = MCLK/K - DCLK/8 - Sps Full Scale DC Calibration Range (Note 7) FSCR 25 - 100 %F.S. Channel-to-Channel Time-Shift Error (when PC[6:0] bits are set to “0000000”) 1.0 µs High Pass Filter Pole Frequency -3 dB - 0.5 - Hz Power Supplies Power Supply Currents (Active State) IA+ ID+ (VD+ = 5 V) ID+ (VD+ = 3.3 V) PSCA PSCD PSCD - - - 1.3 2.9 1.7 - - - mA mA mA Power Consumption Active State (VD+ = 5 V) (Note 8) Active State (VD+ = 3.3 V) Stand-By State Sleep State PC - - - - 21 11.6 6.75 10 25 - - - mW mW mW µW Power Supply Rejection Ratio (50, 60 Hz) for Current Channel (Gain = 10) (Note 9) (Gain = 50) PSRR PSRR 56 75 - - - - dB dB Power Supply Rejection Ratio (50, 60 Hz) for Voltage Channel (Note 9) PSRR 48 - - dB PFMON Power-Fail Detect Threshold (Note 10) PMLO 2.3 2.45 - V PFMON “Power-Restored” Detect Threshold (Note 11) PMHI - 2.55 2.7 V PSRR 20 0.150V V eq ------------------- ⎩⎭ ⎨⎬ ⎧⎫ log ⋅ = |
Аналогичный номер детали - CS5460A-BS |
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Аналогичное описание - CS5460A-BS |
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