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TPS65921B1ZQZR Fiches technique(PDF) 5 Page - Texas Instruments |
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TPS65921B1ZQZR Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 58 page TPS65921 www.ti.com SWCS048F – MARCH 2010 – REVISED MARCH 2012 Table 1. Base Oscillator Switching Characteristics (continued) PARAMETER MIN TYP MAX UNIT Maximum drive power 1.0 µW Operating drive level 0.5 µW Crystal quality factor 13k 54k Start-up time, all conditions 500 tSX ms Start-up time, 25°C 360 Active current High jitter mode 1.8 IDDA consumption (configured µA 0.8 Low jitter mode through the LOJIT bit) Low battery mode (1.2 V) 1 IDDQ Current consumption µA Startup 8 CLOCK SLICER PARAMETER MODE(1) MIN TYP MAX UNIT Internal coupling capacitor 4.2 5 5.7 pF LP 15 60 k Ω Parallel input resistance over 10 to 40 MHz range HP 30 75 k Ω BP/PD 1 100 M Ω LP 0.3 0.8 HP 0.3 0.7 Parallel input capacitance over 10 to 40 MHz range pF BP/PD 0.08 1 BP/PD 40 230 Output duty cycle with VIN = 0.2 VPP LP/HP 40% 50% 60% LP 4 18 Propagation delay HP 3 15 ns BP/PD 0.2 3 Power supply rejection ratio sideband (1% RMS of supply voltage added LP/HP 26 dBc sine 5 MHz) LP 175 µA Current consumption at maximum input of 40 MHz HP 235 µA BP/PD 39 nA Power-up time LP/HP 1 ms Output peak-to-peak jitter with an input peak-to-peak jitter < 0.1% and for LP/HP 0.2% jitter frequency below 300 kHz Output peak-to-peak jitter with an input peak-to-peak jitter < 0.1% and for LP/HP 1.0% jitter frequency above 300 kHz (1) Bypass input maximum voltage is the same as the maximum voltage provided for the I/O interface. 32KCLKOUT OUTPUT CLOCK NAME PARAMETER DESCRIPTION MIN TYP MAX UNIT f Frequency 32.768 kHz CL Load capacitance 40 pF VOUT Output clock voltage, depending on output 1.8(1) V reference level IO.1P8 VOH Voltage output high VOUT – 0.45 VOUT V VOL Voltage output low 0 0.45 V (1) The output voltage depends on output reference level which is IO.1P8. Copyright © 2010–2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TPS65921 |
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