LTC2481_1 datasheet(2/40 Pages) LINER

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LTC2481

2481fc

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VCC) to GND...................... – 0.3V to 6V

Analog Input Voltage to GND ....... –0.3V to (VCC + 0.3V)

Reference Input Voltage to GND .. –0.3V to (VCC + 0.3V)

Digital Input Voltage to GND ....... – 0.3V to (VCC + 0.3V)

Digital Output Voltage to GND...... –0.3V to (VCC + 0.3V)

Operating Temperature Range

LTC2481C.................................................... 0°C to 70°C

LTC2481I .................................................– 40°C to 85°C

LTC2481H .............................................. –40°C to 125°C

Storage Temperature Range ................. –65°C to 125°C

(Notes 1, 2)

TOP VIEW

DD PACKAGE

10-LEAD (3mm

3mm) PLASTIC DFN

CA0/f0

CA1

GND

SDA

SCL

REF+

VCC

REF–

IN+

IN–

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC2481CDD#PBF

LTC2481CDD#TRPBF

LBPV

10-Lead (3mm

× 3mm) Plastic DFN

0°C to 70°C

LTC2481IDD#PBF

LTC2481IDD#TRPBF

LBPV

10-Lead (3mm

× 3mm) Plastic DFN

–40°C to 85°C

LTC2481HDD#PBF

LTC2481HDD#TRPBF

LBPV

10-Lead (3mm

× 3mm) Plastic DFN

–40°C to 125°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

ELECTRICAL CHARACTERISTICS (NORMAL SPEED) The l 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)

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

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)

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

nV/°C

Positive Full-Scale Error

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

2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF (H-Grade)

ppm of VREF

ppm

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– = 0.75VREF, IN+ = 0.25VREF

2.5V ≤ VREF ≤ VCC, IN– = 0.75VREF, IN+ = 0.25VREF (H-Grade)

ppm of VREF

ppm

Negative Full-Scale Error Drift

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

0.1

ppm of VREF/°C

Total Unadjusted Error

5V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6)

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)

ppm of VREF

Output Noise

5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN– = IN+ ≤ VCC (Note 12)

0.6

μVRMS

Internal PTAT Signal

TA = 27°C

420

Internal PTAT Temperature Coefﬁcient

1.4

mV/°C

Programmable Gain

See Table 2a

256

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