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TLC5617ID Datasheet(PDF) 11 Page - Texas Instruments |
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TLC5617ID Datasheet(HTML) 11 Page - Texas Instruments |
11 / 20 page TLC5617, TLC5617A PROGRAMMABLE DUAL 10-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS151B – JULY 1997 – REVISED MARCH 2000 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION general function The TLC5617 uses a resistor string network buffered with an op amp to convert 10-bit digital data to analog voltage levels (see functional block diagram and Figure 17). The output of the TLC5617 is the same polarity as the reference input (see Table 1). The output code is given by: 2 V REFIN CODE 1024 An internal circuit resets the DAC register to all 0s on power up. _ + Resistor String DAC 5 V 0.1 µF AGND VDD OUT REFIN R R _ + ×2 DIN CS SCLK Figure 17. TLC5617 Typical Operating Circuit Table 1. Binary Code Table (0 V to 2 VREFIN Output), Gain = 2 INPUT† OUTPUT 1111 1111 11(00) 2 V REFIN 1023 1024 : : 1000 0000 01(00) 2 V REFIN 513 1024 1000 0000 00(00) 2 V REFIN 512 1024 + V REFIN 0111 1111 11(00) 2 V REFIN 511 1024 : : 0000 0000 01(00) 2 V REFIN 1 1024 0000 0000 00(00) 0 V † A 10-bit data word with two sub-LSB 0s must be written since the DAC input latch is 12 bits wide. |
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