LTC2486 datasheet(9/36 Pages) LINER

Part #	LTC2486

Description	16-Bit 2-/4-Channel ?誇 ADC with PGA and Easy Drive Input Current Cancellation

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Manufacturer	LINER [Linear Technology]

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LTC2486

9

2486f

TYPICAL PERFORMANCE CHARACTERISTICS

Integral Nonlinearity (2x Speed

Mode; VCC = 5V, VREF = 2.5V)

Integral Nonlinearity (2x Speed

Mode; VCC = 2.7V, VREF = 2.5V)

Noise Histogram

(2x Speed Mode)

RMS Noise vs VREF

(2x Speed Mode)

Offset Error vs VIN(CM)

(2x Speed Mode)

Offset Error vs Temperature

(2x Speed Mode)

Integral Nonlinearity (2x Speed

Mode; VCC = 5V, VREF = 5V)

INPUT VOLTAGE (V)

–3

–1

1

3

–2

0

2

–1.5

–0.5

0.5

1.5

2486 G27

2.5

–2

–2.5

–1

0

1

2

VCC = 5V

VREF = 5V

VIN(CM) = 2.5V

FO = GND

25

°C, 85°C

–45

°C

INPUT VOLTAGE (V)

–3

–1

1

3

–2

0

2

–0.75

–0.25

0.25

0.75

2486 G28

1.25

–1.25

VCC = 5V

VREF = 2.5V

VIN(CM) = 1.25V

FO = GND

85

°C

–45

°C, 25°C

INPUT VOLTAGE (V)

–3

–1

1

3

–2

0

2

–0.75

–0.25

0.25

0.75

2486 G29

1.25

–1.25

VCC = 2.7V

VREF = 2.5V

VIN(CM) = 1.25V

FO = GND

85

°C

–45

°C, 25°C

OUTPUT READING (

µV)

179

8

10

12

186.2

2486 G30

6

4

181.4

183.8

188.6

2

0

16

14

10,000 CONSECUTIVE

READINGS

VCC = 5V

VREF = 5V

VIN = 0V

TA = 25°C

GAIN = 128

RMS = 0.85

µV

AVERAGE = 0.184mV

VREF (V)

0

0.6

0.8

1.0

4

2486 G31

0.4

0.2

0

1

2

3

5

VCC = 5V

VIN = 0V

VIN(CM) = GND

FO = GND

TA = 25°C

GAIN = 128

VIN(CM) (V)

–1

180

182

186

188

190

200

194

1

3

4

2486 G32

184

196

198

192

0

2

5

6

VCC = 5V

VREF = 5V

VIN = 0V

FO = GND

TA = 25°C

TEMPERATURE (

°C)

–45

200

210

220

75

2486 G33

190

180

160

–15

15

45

–30

90

0

30

60

170

240

230

VCC = 5V

VREF = 5V

VIN = 0V

VIN(CM) = GND

FO = GND

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LTC2486 Datasheet(PDF) 9 Page - Linear Technology

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