TLV2544_14 Datasheet, PDF (5/48 Pages) Texas Instruments – Maximum Throughput 200-KSPS Built-In Reference, Conversion Clock and 8× FIFO

TLV2544, TLV2548
2.7ĆV TO 5.5ĆV, 12ĆBIT, 200ĆKSPS, 4Ć/8ĆCHANNEL, LOWĆPOWER
SERIAL ANALOGĆTOĆDIGITAL CONVERTERS WITH AUTOPOWERĆDOWN
SLAS198E − FEBRUARY 1999 − REVISED JUNE 2003
detailed description (continued)
Charge
Redistribution
DAC
Ain
_
+
Control
Logic
ADC Code
REFM
Figure 1. Simplified Model of the Successive-Approximation System
serial interface
INPUT DATA FORMAT
MSB
LSB
D15−D12
D11−D0
Command ID[15:12] Configuration data field ID[11:0]
Input data is binary. All trailing blanks can be filled with zeros.
OUTPUT DATA FORMAT READ CFR/FIFO READ
MSB
LSB
D15−D12
D11−D0
Don’t care
Register content or FIFO content OD[11:0]
OUTPUT DATA FORMAT CONVERSION
MSB
LSB
D15−D4
D3−D0
Conversion result OD[11:0]
Don’t care
The output data format is binary (unipolar straight binary).
binary
Zero scale code = 000h, Vcode = VREFM
Full scale code = FFFh, Vcode = VREFP − 1 LSB
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