LTC2499 Datasheet, PDF (32/32 Pages) Linear Technology – 24-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface

LTC2499
TYPICAL APPLICATION
External Buffers Provide High Impedance Inputs and
Amplifier Offsets are Automatically Cancelled
ANALOG ¹⁷
INPUTS
INPUT
MUX
LTC2499
ΔΣ ADC
WITH
SDA
EASY DRIVE SCL
INPUTS
2_–
1/2 LTC6078
3₊
1 ^1k
0.1μF
6_–
1/2 LTC6078
5₊
7 ^1k
0.1μF
RELATED PARTS
PART NUMBER
LT1236A-5
LT1460
LT1790
LTC2400
LTC2410
LTC2411/
LTC2411-1
LTC2413
LTC2440
LTC2442
LTC2449
DESCRIPTION
Precision Bandgap Reference, 5V
Micropower Series Reference
Micropower SOT-23 Low Dropout Reference Family
24-Bit, No Latency ΔΣ ADC in SO-8
24-Bit, No Latency ΔΣ ADC with Differential Inputs
24-Bit, No Latency ΔΣ ADCs with Differential Inputs in MSOP
24-Bit, No Latency ΔΣ ADC with Differential Inputs
24-Bit, High Speed, Low Noise ΔΣ ADC
24-Bit, High Speed, 2-/4-Channel ΔΣ ADC with Integrated
Amplifier
24-Bit, High Speed, 8-/16-Channel ΔΣ ADC
LTC2480/LTC2482/
LTC2484
LTC2481/LTC2483/
LTC2485
LTC2496
LTC2497
LTC2498
16-Bit/24-Bit ΔΣ ADCs with Easy Drive Inputs, 600nV Noise,
Programmable Gain, and Temperature Sensor
16-Bit/24-Bit ΔΣ ADCs with Easy Drive Inputs, 600nV Noise,
I²C Interface, Programmable Gain, and Temperature Sensor
16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Inputs and
SPI Interface
16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Inputs and
I²C Interface
24-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Inputs and
SPI Interface, Temperature Sensor
COMMENTS
0.05% Max Initial Accuracy, 5ppm/°C Drift
0.075% Max Initial Accuracy, 10ppm/°C Max Drift
0.05% Max Initial Accuracy, 10ppm/°C Max Drift
0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200μA
0.8μV_RMS Noise, 2ppm INL
1.45μV_RMS Noise, 4ppm INL, Simultaneous 50Hz/60Hz
Rejection (LTC2411-1)
Simultaneous 50Hz/60Hz Rejection, 800nV_RMS Noise
3.5kHz Output Rate, 200nV Noise, 24.6 ENOBs
8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz
Rejection
8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz
Rejection
Pin Compatible with 16-Bit and 24-Bit Versions
Pin Compatible with 16-Bit and 24-Bit Versions
Pin-Compatible with LTC2498/LTC2449
Pin-Compatible with LTC2499
Pin-Compatible with LTC2496/LTC2449
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
2499fb
LT 1008 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006