LTC2482

32

2482fb

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

© LINEAR TECHNOLOGY CORPORATION 2005

LT 1107 REV B • PRINTED IN USA

RELATED PARTS

TYPICAL APPLICATION

100

METERS

CS

SCK

SDO

5V

LTC2482

REF

GND

C7

0.1μF

C8

1μF

1k

1%

2482 F30

GND

1k

1%

REMOTE

SENSOR

+

–

1μF

Figure 30. Differential Input Current Cancellation Enables Direct Digitization of Remote Sensors

INPUT VOLTAGE (V)

0

5

4

3

2

1

0

–1

–2

–3

–4

–5

2

2482 F31

0.5

1

1.5

2.5

INTEGRAL NONLINEARITY

THROUGH 100 METERS OF

WIRE AND A 1kΩ, 1μF RC

NETWORK

OUTPUT READING (mV)

–5.25

8

10

12

–3.45

–2.25

2482 F32

6

4

–4.65 –4.05

–2.85

–1.65

2

0

RMS NOISE = 630nV

AVERAGE = –3.5μV

2500 CONSECUTIVE

READINGS

Figure 31. Current Cancellation Enables Precise DC

Measurements Under Extreme Conditions

Figure 32. Input Current Cancellation Enables Low Noise/

Low Offset Measurements Under Extreme Conditions

PART NUMBER

DESCRIPTION

COMMENTS

LTC1050

Precision Chopper Stabilized Op Amp

LT1236A-5

Precision Bandgap Reference, 5V

0.05% Max Initial Accuracy, 5ppm/°C Drift

LT1460

Micropower Series Reference

0.075% Max Initial Accuracy, 10ppm/°C Max Drift

LTC2400

24-Bit, No Latency

ΔΣ ADC in SO-8

0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200μA

LTC2401/LTC2402

1-/2-Channel, 24-Bit, No Latency

ΔΣ ADCs in MSOP

0.6ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200μA

LTC2404/LTC2408

4-/8-Channel, 24-Bit, No Latency

ΔΣ ADCs with

Differential Inputs

0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200μA

LTC2410

24-Bit, No Latency

ΔΣ ADC with Differential Inputs

LTC2411/LTC2411-1

24-Bit, No Latency

(LTC2411-1)

LTC2413

24-Bit, No Latency

ΔΣ ADC with Differential Inputs

LTC2415/ LTC2415-1

24-Bit, No Latency

ΔΣ ADCs with 15Hz Output Rate

Pin Compatible with the LTC2410

LTC2414/LTC2418

8-/16-Channel 24-Bit, No Latency

ΔΣ ADCs

0.2ppm Noise, 2ppm INL, 3ppm Total Unadjusted Errors 200μA

LTC2420

20-Bit, No Latency

ΔΣ ADC in SO-8

1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400

LTC2430/LTC2431

20-Bit, No Latency

ΔΣ ADCs with Differential Inputs

2.8μV Noise, SSOP-16/MSOP Package

LTC2435/LTC2435-1

20-Bit, No Latency

ΔΣ ADCs with 15Hz Output Rate

3ppm INL, Simultaneous 50Hz/60Hz Rejection

LTC2440

High Speed, Low Noise 24-Bit

ΔΣ ADC

3.5kHz Output Rate, 200mV Noise, 24.6 ENOBs

LTC2480

16-Bit, No Latency

ΔΣ ADC with PGA and Temperature Sensor Pin Compatible with LTC2482

LTC2484

24-Bit, No Latency

ΔΣ ADC with Temperature Sensor

Pin Compatible with LTC2482