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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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ADS7949SRTER Arkusz danych(PDF) 9 Page - Texas Instruments |
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ADS7949SRTER Arkusz danych(HTML) 9 Page - Texas Instruments |
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9 / 39 page  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SCLK CS D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 SDO t SU1 t D1 t H1 t D2 t D3 Sample N Sample N+1 t ACQ t CONV 1/f SAMPLE DatafromSampleN -1 t W1 t WH t WL t D4 ADS7947 ADS7948 ADS7949 www.ti.com SLAS708 – SEPTEMBER 2010 TIMING DIAGRAM TIMING REQUIREMENTS All specifications at DVDD = 1.65V to AVDD and TA = –40°C to +125°C, unless otherwise noted. PARAMETER TEST CONDITIONS(1) MIN TYP MAX UNIT ADS7947 (12-bit) 13.5 SCLK tCONV Conversion time ADS7948 (10-bit) 10.5 SCLK ADS7949 (8-bit) 8.5 SCLK tACQ Acquisition time 80 ns SCLK = 34MHz, fSAMPLE Sample rate (throughput rate) 2 MSPS 16 clock frame ADS7947 (12-bit) SCLK = 34MHz 2.1 MSPS fSAMPLE MAX = 1/( tCONV MAX + tACQ MIN) ADS7948 (10-bit) SCLK = 34MHz 2.57 MSPS ADS7949 (8-bit) SCLK = 34MHz 3 MSPS tW1 Pulse width CS high 25 ns DVDD = 1.8V 14.5 ns tD1 Delay time, CS low to first data (D0-15) out DVDD = 3V 12.5 ns DVDD = 5V 8.5 ns DVDD = 1.8V 3.5 ns tSU1 Setup time, CS low to first rising edge of SCLK DVDD = 3V 3.5 ns DVDD = 5V 3.5 ns DVDD = 1.8V 11 ns tD2 (2) Delay time, SCLK falling to SDO DVDD = 3V 9 ns DVDD = 5V 7.1 ns DVDD = 1.8V 4 ns tH1 Hold time, SCLK falling to data valid DVDD = 3V 3 ns DVDD = 5V 2 ns DVDD = 1.8V 15 ns tD3 Delay time, CS high to SDO 3-state DVDD = 3V 12.5 ns DVDD = 5V 8.5 ns Delay time CS rising edge from conversion end 10 tD4 ns (refer to the tCONV specification for conversion time) tWH Pulse duration, SCLK high 11 ns tW1 Pulse duration, SCLK low 11 ns SCLK frequency 0.4 34 40 MHz tPDSU Setup time, PDEN high to CS rising edge 2 ns (refer to Figure 50 and Figure 51) tPDH Hold time, CS rising edge to PDEN falling edge (refer to Figure 50) 20 ns (1) 1.8V specifications apply from 1.65V to 2V; 3V specifications apply form 2.7V to 3.6V; 5V specifications apply from 4.75V to 5.25V. (2) With 50pF load. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): ADS7947 ADS7948 ADS7949 |
Podobny numer części - ADS7949SRTER |
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Podobny opis - ADS7949SRTER |
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