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ADS5273 Datasheet(PDF) 10 Page - Texas Instruments |
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ADS5273 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 33 page TEST PATTERNS ADS5273 SBAS305D – JANUARY 2004 – REVISED JANUARY 2009 .............................................................................................................................................. www.ti.com SERIAL INTERFACE REGISTERS ADDRESS DATA DESCRIPTION REMARKS D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 LVDS BUFFERS (Register 0) All Data Outputs 0 0 Normal ADC Output (default after reset) 0 1 Deskew Pattern 1 0 Sync Pattern See Test Patterns 1 1 Custom Pattern 0 0 Output Current in LVDS = 3.5mA (default after reset) 0 1 Output Current in LVDS = 2.5mA 1 0 Output Current in LVDS = 4.5mA 1 1 Output Current in LVDS = 6.0mA 0 0 0 1 CLOCK CURRENT (Register 1) 0 X X 0 LVDS Clock Output Current IOUT = 3.5mA (default) 0 X X 1 2x LVDS Clock Output Current(1) IOUT = 7.0mA LSB/MSB MODE (Register 1) 0 0 X X LSB Mode (default after reset) 0 1 X X MSB Mode 0 0 1 0 POWER-DOWN ADC CHANNELS (Register 2) X X X X Example: 1010 Powers Down Power-Down Channels 1 to 4; D3 is Channels 4 and 2 and for Channel 4 and D0 for Channel 1 Keeps Channels 1 and 3 Active 0 0 1 1 POWER-DOWN ADC CHANNELS (Register 3) X X X X Power-Down Channels 5 to 8; D3 is for Channel 8 and D0 for Channel 5 CUSTOM PATTERN (Registers 4–6) D3 D2 D1 D0 Bits for Custom Pattern See Test Patterns 0 1 0 0 X X X X 0 1 0 1 X X X X 0 1 1 0 X X X X (1) Output current drive for the two clock LVDS buffers (LCLKP and LCLKN and ADCLKP and ADCLKN) is twice the output current setting programmed in register 0. The current drive of the data buffers remains the same as the setting in register 0. Serial Output(1) LSB MSB ADC Output(2) D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 Deskew Pattern 1 0 1 0 1 0 1 0 1 0 1 0 Sync Pattern 0 0 0 0 0 0 1 1 1 1 1 1 Custom Pattern(3) D0(4) D1(4) D2(4) D3(4) D0(5) D1(5) D2(5) D3(5) D0(6) D1(6) D2(6) D3(6) (1) The serial output stream comes out LSB first by default. (2) D11...D0 represent the 12 output bits from the ADC. (3) D0(4) represents the content of the bit D0 of register 4, D3(6) represents the content of bit D3 of register 6, etc. 10 Submit Documentation Feedback Copyright © 2004–2009, Texas Instruments Incorporated Product Folder Link(s): ADS5273 |
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