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TLC3544CPWRG4 датащи(PDF) 16 Page - Texas Instruments |
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TLC3544CPWRG4 датащи(HTML) 16 Page - Texas Instruments |
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16 / 40 page ![]() TLC3544, TLC3548 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS SLAS266C – OCTOBER 2000 – REVISED MAY 2003 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 detailed description (continued) ideal conversion characteristics 00000000000000 00000000000001 00000000000010 01111111111111 10000000000000 10000000000001 11111111111111 11111111111110 11111111111101 16381 16383 16382 8192 8193 8191 0 1 2 01111111111111 01111111111110 01111111111101 00000000000001 00000000000000 11111111111111 10000000000010 10000000000001 10000000000000 Binary USB 2s Complement BTC 1.999878 V 2.000122 V 3.999512 V Unipolar Analog Input Voltage VREFM = VZS = 0 V 122 µV 488 µV 244 µV VFS – 1 LSB = 3.999756 V 1 LSB = 244 µV VMS = (VFS + VZS)/2 = 2 V VREFP = VFS = 4 V data format INPUT DATA FORMAT (BINARY) OUTPUT DATA FORMAT READ CONVERSION/FIFO MSB LSB MSB LSB ID[15:12] ID[11:0] OD[15:2] OD[1:0] Command Configuration data field or filled with zeros Conversion result Don’t Care 14-BIT Unipolar Straight Binary Output: (USB) Zero-scale code = VZS = 0000h, Vcode = VREFM Mid-scale code = VMS = 2000h, Vcode = VREFP/2 Full-scale code = VFS = 3FFFh, Vcode = VREFT – 1 LSB UnIpolar Input, Binary 2’s Complement Output: (BTC) Zero-scale code = VZS = 2000 h, Vcode = VREFM Mid-scale code = VMS = 0000h, Vcode = (VREFP – VREFM)/2 Full-scale code = VFS = 1FFFh, Vcode = VREFP – 1 LSB |
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