ADA4356ABCZ datasheet(47/61 Pages) AD

47 / 61 page

Data Sheet

ADA4356

analog.com

Rev. 0

47 of 61

Note that some patterns do not adhere to the data format select option. In addition, custom, user-defined test

patterns can be assigned in the following register addresses: Register 0x19, Register 0x1A, Register 0x1B, and Register

0x1C.

Table 14. Digital Output Coding

INPUT (V)1

CONDITION

OFFSET BINARY OUTPUT MODE

TWO’s COMPLEMENT MODE

VIN+ − VIN−

<−1V − 0.5LSB

0000 0000 0000 0000

1000 0000 0000 0000

VIN+ − VIN−

−1V

0000 0000 0000 0000

1000 0000 0000 0000

VIN+ − VIN−

1000 0000 0000 0000

0000 0000 0000 0000

VIN+ − VIN−

+1V − 1.0LSB

1111 1111 1111 1100

0111 1111 1111 1100

VIN+ − VIN−

>+1V − 0.5LSB

1111 1111 1111 1100

0111 1111 1111 1100

VIN+ and VIN− are the positive and negative input voltages.

Table 15. Flexible Output Test Modes

OUTPUT

TEST

MODE BIT

SEQUENCE

PATTERN

NAME

DIGITAL OUTPUT WORD

DIGITAL OUTPUT

WORD 2

SUBJECT

to DATA

FORMAT

SELECT

NOTES

0000

Off (default)

Not applicable (N/A)

N/A

0001

Midscale short

1000 0000 0000 (12-bit)

1000 0000 0000 0000 (16-

bit)

N/A

Yes

Offset

binary

code

shown

0010

+Full-scale

short

1111 1111 1111 (12-bit)

1111 1111 1111 1100 (16-

bit)

N/A

Yes

Offset

binary

code

shown

0011

−Full-scale

short

0000 0000 0000 (12-bit)

0000 0000 0000 0000 (16-

bit)

N/A

Yes

Offset

binary

code

shown

0100

Checkerboard

1010 1010 1010 (12-bit)

1010 1010 1010 1000 (16-

bit)

0101 0101 0101 (12-bit)

0101 0101 0101 0100

(16-bit)

N/A

0101

PN sequence

long1

N/A

Yes

PN23

ITU 0.150

X23 + X18 +

0110

PN sequence

short1

N/A

Yes

PN9

ITU 0.150

X9 + X5 + 1

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