Datasheet

LTC2486
36
2486fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0710 REV D • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
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LT1460 Micropower Series Reference 0.075% Max Initial Accuracy, 10ppm/°C Max Drift
LT1790 Micropower SOT-23 Low Dropout Reference Family 0.05% 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
LTC2410 24-Bit, No Latency ΔΣ ADC with Differential Inputs 0.8μV
RMS
Noise, 2ppm INL
LTC2413 24-Bit, No Latency ΔΣ ADC with Differential Inputs Simultaneous 50Hz/60Hz Rejection, 800nV
RMS
Noise
LTC2440 High Speed, Low Noise 24-Bit ΔΣ ADC 3.5kHz Output Rate, 200nV Noise, 24.6 ENOBs
LTC2442 24-Bit, High Speed 2-Channel and 4-Channel ΔΣ ADC with
Integrated Amplifi er
8kHz Output Rate, 220nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2449 24-Bit, High Speed 8-Channel and 16-Channel ΔΣ ADC 8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2480 16-Bit ΔΣ ADC with Easy Drive Inputs, 600nV Noise,
Programmable Gain, and Temperature Sensor
Pin Compatible with LTC2482/LTC2484
LTC2481 16-Bit ΔΣ ADC with Easy Drive Inputs, 600nV Noise, I
2
C
Interface, Programmable Gain, and Temperature Sensor
Pin Compatible with LTC2483/LTC2485
LTC2482 16-Bit ΔΣ ADC with Easy Drive Inputs Pin Compatible with LTC2480/LTC2484
LTC2483 16-Bit ΔΣ ADC with Easy Drive Inputs, and I
2
C Interface Pin Compatible with LTC2481/LTC2485
LTC2484 24-Bit ΔΣ ADC with Easy Drive Inputs Pin Compatible with LTC2480/LTC2482
LTC2485 24-Bit ΔΣ ADC with Easy Drive Inputs, I
2
C Interface, and
Temperature Sensor
Pin Compatible with LTC2481/LTC2483
LTC2488 2-Channel/4-Channel 16-Bit ΔΣ ADC with Easy Drive Inputs Pin Compatible with LTC2486/LTC2492
LTC2492 2-Channel/4-Channel 24-Bit ΔΣ ADC with Easy Drive Inputs Pin Compatible with LTC2486/LTC2488
LTC2494 8-Channel/16-Channel 16-Bit ΔΣ ADC with PGA and Easy Drive
Inputs
Pin Compatible with LTC2498/LTC2496
LTC2496/
LTC2498
16-Channel/8-Channel 16-Bit/24-Bit ΔΣ ADC with Easy Drive
Inputs, and SPI Interface
Timing Compatible with LTC2486
TYPICAL APPLICATION
Figure 38. Easy Drive ADCs Simplify Measurement of High Impedance Sensors
V
CC
f
O
SCK
SDI
GND
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2486
3-WIRE
SPI INTERFACE
2486 F38
SDO
12 1
REF
+
13
REF
–
14
CH0
8
CH1
9
CH2
10
CH3
11
COM
7
3
5
6
4
2
5V
0.1μF
10μF
CS
5V
I
IN
+
= 0
I
IN
–
= 0
R1
51.1k
R4
51.1k
C4
0.1μF
C3
0.1μF
R3
10k TO 100k
–
+
102k
5V
5V
LT1494
0.1μF
0.1μF
0.1μF
1k
1k
10k
TO 100k