TLV1562

2.7 V TO 5.5 V, HIGH-SPEED LOW-POWER RECONFIGURABLE ANALOG-TO-DIGITAL

CONVERTER WITH 4-INPUT, DUAL S/H, PARALLEL INTERFACE, AND POWER DOWN

SLAS162 – SEPTEMBER 1998

7

POST OFFICE BOX 655303

detailed description (continued)

The following examples show how to program configuration registers CR0 and CR1 for different settings.

Example 1:

REGISTER

INDEX

COMMENT

REGISTER

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

COMMENT

CR0

0

0

1

1

0

1

0

0

0

0

Mono interrupt mode, use RD, write 0D0h to ADC

CR1

0

1

0

0

0

0

0

0

0

0

Use 2s complementary output, use RD, write 104h to ADC

Example 2:

CR0

0

0

1

1

0

1

0

0

0

0

Mono interrupt mode, use CSTART, write 0D0h to ADC

CR1

0

1

0

1

0

0

0

0

0

0

Use 2s complementary output, write 144h to ADC

Example 3:

CR0

0

0

1

1

0

1

0

1

0

0

Dual interrupt mode, use CSTART only, write 0D4h to ADC

CR1

0

1

0

1

0

0

0

0

0

0

Use 2s complementary output, write 144h to ADC

Example 4:

CR0

0

0

1

1

0

1

1

0

0

0

Mono continuous mode, use RD only, write 0D8h to ADC

CR1

0

1

0

0

0

0

0

0

0

0

Use 2s complementary output, write 104h to ADC

Example 5:

CRO

0

0

1

1

0

1

1

1

0

0

Dual continuous mode, use RD only, write 0DCh to ADC

CR1

0

1

0

0

0

0

0

1

0

0

Binary output, write 104h to ADC

analog input

input types

The four analog inputs can be configured as two pairs of differential inputs or four single-ended inputs by setting

the control register 0 bit 4 input type selection (dual or single channel).

differential input (CR0.4=1)

Up to two channels are available when the TLV1562 is programmed for differential input. The output data format

is bipolar when the device is operated in differential input mode.

single-ended input (CR0.4=0)

Up to four channels are available when the TLV1562 is programmed for single-ended input. The output data

format is unipolar when the device is operated in single-ended input mode.