4

LTC1458/LTC1458L

ELECTRICAL CHARACTERISTICS

temperature range.

Note 1: Nonlinearity is defined from the first code that is greater than or

equal to the maximum offset specification to code 4095 (full scale).

Note 2: Load is 5k

Ω in parallel with 100pF.

for the part.

LTC1458

Integral Nonlinearity (INL)

LTC1458

Differential Nonlinearity (DNL)

CODE

0

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

1024

2048 2560

1458 G09

512

1536

3072 3584 4095

CODE

0

2.0

1.6

1.2

0.8

0.4

0

–0.4

–0.8

–1.2

–1.6

–2.0

1024

2048 2560

1458 G08

512

1536

3072 3584 4095

Minimum Supply Headroom for

Full Output Swing vs Load Current

LOAD CURRENT (mA)

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1458 G03

0

REFLO = GND

X1/X2 = GND

CODE: ALL 1's

5

10

15

20

25

30

Minimum Output Voltage vs

Output Sink Current

Output Swing vs Load Resistance

LOAD RESISTANCE (

Ω)

10

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

100

1k

10k

1458 G05A

REFLO = GND

X1/X2 = GND

LOAD RESISTANCE (

Ω)

10

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

100

1k

10k

1458 G06A

REFLO = GND

X1/X2 = GND

OUTPUT SINK CURRENT (mA)

1000

900

800

700

600

500

400

300

200

100

0.1

1458 G04

0

REFLO = GND

X1/X2 = GND

125

°C

–55

°C

25

°C

5

10

15

20

25

30

Output Swing vs Load Resistance