LTC2493CDEPBF datasheet(3/32 Pages) LINER

Part #	LTC2493CDEPBF

Description	24-Bit 2-/4-Channel ADC with Easy Drive Input Current Cancellation and I2C Interface

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Manufacturer	LINER [Linear Technology]

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LTC2493

2493fa

elecTrical characTerisTics (norMal speeD) The

●

denotes the specifications which

apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resolution (No Missing Codes)

0.1V ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5)

24

Bits

Integral Nonlinearity

5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6)

2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6)

●

2

1

10

ppm of VREF

Offset Error

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 13)

●

0.5

2.5

µV

Offset Error Drift

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC

10

nV/°C

Positive Full-Scale Error

2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF

●

25

ppm of VREF

Positive Full-Scale Error Drift

2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF

0.1

ppm of VREF/°C

Negative Full-Scale Error

2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF

●

25

ppm of VREF

Negative Full-Scale Error Drift

2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF

0.1

ppm of VREF/°C

Total Unadjusted Error

5V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V

5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V

2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V

15

ppm of VREF

Output Noise

2.7V < VCC < 5.5V, 2.5V ≤ VREF ≤ VCC,

GND ≤ IN+ = IN– ≤ VCC (Note 12)

0.6

µVRMS

Internal PTAT Signal

TA = 27°C (Note 13)

27.8

28.0

28.2

mV

Internal PTAT Temperature Coefficient

93.5

µV/°C

elecTrical characTerisTics (2x speeD) The

●

denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resolution (No Missing Codes)

0.1V ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5)

24

Bits

Integral Nonlinearity

5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6)

2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6)

●

2

1

10

ppm of VREF

Offset Error

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 13)

●

0.2

2

mV

Offset Error Drift

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC

100

nV/°C

Positive Full-Scale Error

2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF

●

25

ppm of VREF

Positive Full-Scale Error Drift

2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF

0.1

ppm of VREF/°C

Negative Full-Scale Error

2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF

●

25

ppm of VREF

Negative Full-Scale Error Drift

2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF

0.1

ppm of VREF/°C

Output Noise

5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN+ = IN– ≤ VCC

0.85

µVRMS

converTer characTerisTics The

●

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. (Note 3)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Common Mode Rejection DC

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5)

●

140

dB

Input Common Mode Rejection 50Hz ±2%

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 7)

●

140

dB

Input Common Mode Rejection 60Hz ±2%

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 8)

●

140

dB

Input Normal Mode Rejection 50Hz ±2%

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 7)

●

110

120

dB

Input Normal Mode Rejection 60Hz ±2%

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 8)

●

110

120

dB

Input Normal Mode Rejection 50Hz/60Hz ±2%

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Notes 5, 9)

●

87

dB

Reference Common Mode Rejection DC

2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 5)

●

120

140

dB

Power Supply Rejection DC

VREF = 2.5V, IN+ = IN– = GND

120

dB

Power Supply Rejection, 50Hz ±2%, 60Hz ±2%

VREF = 2.5V, IN+ = IN– = GND (Notes 7, 8, 9)

120

dB

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