LTC2640 datasheet(13/24 Pages) LINER

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LTC2640

2640fb

TYPICAL PERFORMANCE CHARACTERISTICS

LTC2640

Large-Signal Response

Mid-Scale-Glitch Impulse

Power-On Reset Glitch

Headroom at Rails

vs Output Current

Exiting Power-Down to Mid-Scale

Supply Current vs Logic Voltage

Hardware CLR

2μs/DIV

VOUT

0.5V/DIV

2640 G26

VFS = VCC = 5V

1/4 SCALE TO 3/4 SCALE

2μs/DIV

LTC2640-H12, VCC = 5V:

3.0nV-s TYP

LTC2640-L12, VCC = 3V:

2.1nV-s TYP

VOUT

5mV/DIV

2640 G27

CS/LD

5V/DIV

200μs/DIV

VCC

2V/DIV

2640 G28

LTC2640-L

VOUT

2mV/DIV

ZERO-SCALE

IOUT (mA)

0123456789

2.5

2.0

3.5

3.0

4.0

2640 G29

1.5

1.0

0.5

5.0

4.5

5V SOURCING

3V (LTC2640-L) SOURCING

3V (LTC2640-L) SINKING

5V SINKING

4μs/DIV

2640 G30

LTC2640-H

CS/LD

2V/DIV

VOUT

0.5V/DIV

LOGIC VOLTAGE (V)

1.4

1.2

0.8

0.4

1.0

0.6

0.2

0.0

2640 G31

VCC = 5V

VCC = 3V

(LTC2640-L)

SWEEP SCK, SDI, CS/LD

AND CLR BETWEEN

0V AND VCC

1μs/DIV

2640 G32

LTC2640-LZ

VOUT

1V/DIV

CLR

5V/DIV

Gain Error vs VCC

Gain Error vs Temperature

VCC (V)

2.5

3.5

4.5

5.5

0.1

0.2

0.3

2640 G24

0.0

–0.3

–0.2

–0.1

–0.4

0.4

EXTERNAL REF.

VREF = 2.5V

TEMPERATURE (°C)

–50 –25

100 125 150

0.1

0.2

0.3

2640 G25

0.0

–0.3

–0.2

–0.1

–0.4

0.4

EXTERNAL REF.

VREF = 2.5V

TA = 25°C, unless otherwise noted.

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