Datasheet

LTC2493
32
2493fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2006
LT 0710 REV D • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
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
LT1790 Micropower SOT-23 Low Dropout Reference Family 0.05% Max Initial Accuracy, 10ppm/°C Max Drift
LTC2400 24-Bit, No Latency ∆∑ ADC in SO-8 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA
LTC2410 24-Bit, No Latency ∆∑ ADC with Differential Inputs 0.8µV
RMS
Noise, 2ppm INL
LTC2440 24-Bit, High Speed, Low Noise ∆∑ ADC 3.5kHz Output Rate, 200nV Noise, 24.6 ENOBs
LTC2442 24-Bit, High Speed, 2-/4-Channel ∆∑ ADC with Integrated
Amplifier
8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz
Rejection
LTC2449 24-Bit, High Speed, 8-/16-Channel ∆∑ ADC 8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz
Rejection
LTC2480/LTC2482/
LTC2484
16-Bit/24-Bit ∆∑ ADCs with Easy Drive Inputs, 600nV Noise,
Programmable Gain, and Temperature Sensor
Pin Compatible 16-Bit and 24-Bit Versions
LTC2481/LTC2483/
LTC2485
16-Bit/24-Bit ∆∑ ADCs with Easy Drive Inputs, 600nV Noise,
I
2
C Interface, Programmable Gain, and Temperature Sensor
Pin Compatible 16-Bit and 24-Bit Versions
LTC2486/LTC2488/
LTC2492
16-Bit/24-Bit 2-/4-Channel ∆∑ ADC with Easy Drive Inputs, SPI
Interface, Programmable Gain, and Temperature Sensor
Pin-Compatible 16-Bit and 24-Bit Versions
LTC2487 16-Bit 2-/4-Channel ∆∑ ADC with Easy Drive Inputs and
I
2
C Interface, Temperature Sensor
Pin-Compatible with LTC2493/LTC2489
LTC2489 16-Bit 2-/4-Channel ∆∑ ADC with Easy Drive Inputs Pin-Compatible with LTC2487/LTC2493
LTC2495/LTC2497/
LTC2499
16-Bit/24-Bit 8-/16-Channel ∆∑ ADC with Easy Drive Inputs and
I
2
C Interface, Programmable Gain, and Temperature Sensor
Pin-Compatible 16-Bit and 24-Bit Versions
LTC2496/LTC2498 16-Bit 8-/16-Channel ∆∑ ADC with Easy Drive Inputs and
SPI Interface
Pin-Compatible with LTC2498/LTC2449
Figure 37. Easy Drive ADCs Simplify Measurement of High Impedance Sensors
V
CC
f
O
SCL
SDA
GND
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2493
2-WIRE
I
2
C INTERFACE
9-PIN SELECTABLE
ADDRESSES
2493 F37
CA0
12 1
REF
+
13
REF
–
14
CH0
8
CH1
9
CH2
10
CH3
11
COM
7
4
2
6
3
5
5V
0.1µF
10µF
CA1
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
1.7k