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TLV1543IDBLE Datasheet(PDF) 7 Page - Texas Instruments |
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TLV1543IDBLE Datasheet(HTML) 7 Page - Texas Instruments |
7 / 26 page TLV1543C, TLV1543I, TLV1543M 3.3V 10BIT ANALOGTODIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS SLAS072E − DECEMBER 1992 − REVISED JANUARY 2004 7 WWW.TI.COM converter and analog input (continued) SC Threshold Detector Node 512 REF − REF+ ST 512 VI To Output Latches REF − ST REF+ REF − ST REF+ REF − ST REF+ REF − ST REF+ REF − ST REF+ REF − ST REF+ REF − ST REF − ST 1 1 2 4 8 16 128 256 Figure 1. Simplified Model of the Successive-Approximation System chip-select operation The trailing edge of CS starts all modes of operation, and CS can abort a conversion sequence in any mode. A high-to-low transition on CS within the specified time during an ongoing cycle aborts the cycle, and the device returns to the initial state (the contents of the output data register remain at the previous conversion result). Exercise care to prevent CS from being taken low close to completion of conversion because the output data can be corrupted. reference voltage inputs There are two reference inputs used with these devices: REF + and REF −. These voltage values establish the upper and lower limits of the analog input to produce a full-scale and zero-scale reading respectively. The values of REF +, REF −, and the analog input should not exceed the positive supply or be lower than GND consistent with the specified absolute maximum ratings. The digital output is at full scale when the input signal is equal to or higher than REF + and at zero when the input signal is equal to or lower than REF −. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1): TLV1543C/TLV1543I −0.5 V to 6.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . TLV1543M −0.5 V to 6 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, VI (any input) −0.3 V to VCC + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, VO −0.3 V to VCC + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Positive reference voltage, Vref+ VCC + 0.1 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Negative reference voltage, Vref− −0.1 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak input current (any input), I(p-p) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak total input current (all inputs), Ip ±30 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: TLV1543C 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TLV1543I −40 °C to 85°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TLV1543M −55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to digital ground with REF − and GND wired together (unless otherwise noted). |
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