TLV5510

2.7-V TO 3.6-V 8-BIT HIGH-SPEED ANALOG-TO-DIGITAL CONVERTER

SLAS124C– DECEMBER 1997 – REVISED DECEMBER 1999

16

POST OFFICE BOX 655303

PRINCIPLES OF OPERATION

R1

40

Ω NOM

Rref

200

Ω NOM

R2

60

Ω NOM

VDDA

(Analog Supply)

REFTS

REFT

REFB

REFBS

AGND

TLV5510

16

17

22

21

23

18

0.1

µF

Figure 22. External Connections for Using the Internal Reference Resistor Divider

functional operation

The TLV5510 functions as shown in the Table 2.

Table 2. Functional Operation

INPUT SIGNAL

STEP

DIGITAL OUTPUT CODE

INPUT SIGNAL

VOLTAGE

STEP

MSB

LSB

REFT

255

1

1

1

1

1

1

1

1

•

•

•

••

••

••

•

•

•

•

••

••

••

•

•

128

1

00

00

00

0

•

127

0

11

11

11

1

•

•

•

••

••

••

•

•

•

•

••

••

••

•

REFB

0

0

0

0

0

0

0

0

0