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AD7729 Arkusz danych(PDF) 5 Page - Analog Devices |
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AD7729 Arkusz danych(HTML) 5 Page - Analog Devices |
5 / 17 page AD7729 –4– REV. 0 TIMING CHARACTERISTICS Limit at Parameter TA = –40 C to +105 C Units Description AUXILIARY FUNCTIONS Clock Signals See Figure 2. t1 76 ns min MCLK Period t2 30.4 ns min MCLK Width Low t3 30.4 ns min MCLK Width High t4 t1 ns min ASCLK Period. See Figures 4 and 6. t5 0.4 × t 1 ns min ASCLK Width Low t6 0.4 × t 1 ns min ASCLK Width High t10 20 ns min ASDI/ASDIFS Setup Before ASCLK Low t11 10 ns min ASDI/ASDIFS Hold After ASCLK Low t12 15 ns max ASDOFS Delay from ASCLK High t13 0 ns min ASDOFS Hold After ASCLK High t14 0 ns min ASDO Hold After ASCLK High t15 15 ns max ASDO Delay from ASCLK High t16 10 ns min ASDIFS Low to ASDI LSB Read by ASPORT t17 t4 + 15 ns min Interval Between Consecutive ASDIFS Pulses Receive Section Clock Signals See Figures 5 and 7. t7 t1 ns min BSCLK Period t8 0.4 × t 1 ns min BSCLK Width Low t9 0.4 × t 1 ns min BSCLK Width High t18 20 ns min BSDI/BSDIFS Setup Before BSCLK Low t19 10 ns min BSDI/BSDIFS HoldAfter BSCLK Low t20 15 ns max BSDOFS Delay from BSCLK High t21 0 ns min BSDOFS Hold After BSCLK High t22 0 ns min BSDO Hold After BSCLK High t23 15 ns max BSDO Delay from BSCLK High t24 10 ns min BSDIFS Low to ASDI LSB Read by BSPORT t25 t7 + 15 ns min Interval Between Consecutive BSDIFS Pulses ASCLK = MCLK/(2 × ASCLKRATE). ASCLKRATE can have a value from 0 . . . 1023. When ASCLKRATE = 0, ASCLK = 13 MHz. BSCLK = MCLK/(2 × BSCLKRATE). BSCLKRATE can have a value from 0 . . . 1023. When BSCLKRATE = 0, BSCLK = 13 MHz. Specifications subject to change without notice. (AVDD1 = AVDD2 = +3 V 10%; DVDD1 = DVDD2 = +3 V 10%; AGND = DGND = 0 V; TA = TMIN to TMAX, unless otherwise noted) Table II. Receive Section Signal Ranges Baseband Section Signal Range VREFCAP 1.3 V ± 5% VREFOUT 1.3 V ± 10% ADC ADC Signal Range 2 VREFCAP VBIAS Differential Input VREFCAP/2 to (AVDD1 – VREFCAP/2) Single-Ended Input VREFCAP to (AVDD1 – VREFCAP) Signal Range Differential VBIAS ± V REFCAP/2 Single-Ended VBIAS ± V REFCAP Table III. Auxiliary Section Signal Ranges AUXDAC Signal Range Output Code Code 000 2/32 × V REFCAP Code 3FF 2 VREFCAP |
Podobny numer części - AD7729 |
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Podobny opis - AD7729 |
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