TLC5615CP 参数 Datasheet PDF下载

TLC5615C, TLC5615I

10-BIT DIGITAL-TO-ANALOG CONVERTERS

SLAS142C – OCTOBER 1996 – REVISED MARCH 2000

APPLICATION INFORMATION

general function

The TLC5615 uses a resistor string network buffered with an op amp in a fixed gain of 2 to convert 10-bit digital

data to analog voltage levels (see functional block diagram and Figure 9). The output of the TLC5615 is the

same polarity as the reference input (see Table 1).

An internal circuit resets the DAC register to all zeros on power up.

DIN

SCLK

CS

DOUT

REFIN

+

_

Resistor

String

DAC

+

_

R

OUT

R

AGND

VDD

5V

0.1

µF

Figure 9. TLC5615 Typical Operating Circuit

Table 1. Binary Code Table (0 V to 2 V

REFIN

Output)

,

Gain = 2

INPUT†

1111

1111

:

1000

1000

0111

0000

0000

1111

:

0000

0000

0000

0000

01(00)

00(00)

2 V

01(00)

00(00)

11(00)

2 V

2 V

11(00)

2 V

OUTPUT

1023

REFIN 1024

:

513

REFIN 1024

512

REFIN 1024

2 V

+

VREFIN

511

REFIN 1024

:

1

REFIN 1024

0V

† A 10-bit data word with two bits below the LSB bit (sub-LSB) with 0 values

must be written since the DAC input latch is 12 bits wide.

10

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