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TLV2543CDWRG4 Datasheet(PDF) 11 Page - Texas Instruments |
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TLV2543CDWRG4 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 28 page TLV2543C, TLV2543I 12-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS SLAS096C – MARCH 1995 – REVISED JUNE 2000 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN NOM MAX UNIT Supply voltage, VCC 3 3.3 3.6 V Positive reference voltage, Vref + (see Note 2) VCC V Negative reference voltage, Vref – (see Note 2) 0 V Differential reference voltage, Vref + – Vref – (see Note 2) 2.5 VCC VCC + 0.1 V Analog input voltage (see Note 2) 0 VCC V High-level control input voltage, VIH VCC = 3 V to 3.6 V 2.1 V Low-level control input voltage, VIL VCC = 3 V to 3.6 V 0.6 V Clock frequency at I/O CLOCK 0 3 4.1 MHz Setup time, address bits at DATA INPUT before I/O CLOCK ↑, tsu(A) (see Figure 5) 100 ns Hold time, address bits at DATA INPUT after I/O CLOCK ↑, th(A) (see Figure 5) 0 ns Hold time, CS low after last I/O CLOCK ↓, th(CS) (see Figure 6) 0 ns Setup time, CS low before clocking in first address bit, tsu(CS) (see Note 3 and Figure 6) 1.425 µs Pulse duration, I/O CLOCK high, twH(I/O) 190 ns Pulse duration, I/O CLOCK low, twL(I/O) 190 ns Transition time, I/O CLOCK, tt(I/O) (see Note 4 and Figure 7) 1 µs Transition time, DATA INPUT and CS, tt(CS) 10 µs Operating free air temperature TA TLV2543C 0 70 °C Operating free-air temperature, TA TLV2543I –40 85 °C NOTES: 2. Analog input voltages greater than the voltage applied to REF+ convert as all ones (111111111111), while input voltages less than the voltage applied to REF– convert as all zeros (000000000000). 3. To minimize errors caused by noise at the CS input, the internal circuitry waits for a setup time after CS ↓ before responding to control input signals. No attempt should be made to clock in an address until the minimum CS setup time elapses. 4. This is the time required for the clock input signal to fall from VIHmin to VILmax or to rise from VILmax to VIHmin. In the vicinity of normal room temperature, the devices function with input clock transition time as slow as 1 µs for remote data acquisition applications where the sensor and the A/D converter are placed several feet away from the controlling microprocessor. |
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