LTC2492
36
2492fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2006
LT 0710 REV D PRINTED IN USA
RELATED PARTS
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 Δ∑ ADC in SO-8
0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200μA
LTC2410
24-Bit, No Latency Δ∑ ADC with Differential Inputs
0.8μVRMS Noise, 2ppm INL
LTC2411/
LTC2411-1
24-Bit, No Latency Δ∑ ADCs with Differential Inputs in MSOP
1.45μVRMS Noise, 4ppm INL, Simultaneous 50Hz/60Hz
Rejection (LTC2411-1)
LTC2413
24-Bit, No Latency Δ∑ ADC with Differential Inputs
Simultaneous 50Hz/60Hz Rejection, 800nVRMS Noise
LTC2440
High Speed, Low Noise 24-Bit Δ∑ ADC
3.5kHz Output Rate, 200nV Noise, 24.6 ENOBs
LTC2442
24-Bit, High Speed 2-Channel and 4-Channel Δ∑ ADC with
Integrated Amplier
8kHz Output Rate, 220nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2449
24-Bit, High Speed 8-Channel and 16-Channel Δ∑ ADC
8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2480
16-Bit Δ∑ ADC with Easy Drive Inputs, 600nV Noise,
Programmable Gain, and Temperature Sensor
Pin Compatible with LTC2482/LTC2484
LTC2481
16-Bit Δ∑ ADC with Easy Drive Inputs, 600nV Noise, I2C
Interface, Programmable Gain, and Temperature Sensor
Pin Compatible with LTC2483/LTC2485
LTC2482
16-Bit Δ∑ ADC with Easy Drive Inputs
Pin Compatible with LTC2480/LTC2484
LTC2483
16-Bit Δ∑ ADC with Easy Drive Inputs, and I2C Interface
Pin Compatible with LTC2481/LTC2485
LTC2484
24-Bit Δ∑ ADC with Easy Drive Inputs
Pin Compatible with LTC2480/LTC2482
LTC2485
24-Bit Δ∑ ADC with Easy Drive Inputs, I2C Interface, and
Temperature Sensor
Pin Compatible with LTC2481/LTC2483
LTC2488
2-Channel and 4-Channel 16-Bit Δ∑ ADC with Easy Drive Inputs Pin Compatible with LTC2492
LTC2496/
LTC2498
16-Channel/8-Channel 16-Bit/24-Bit Δ∑ ADC with Easy Drive
Inputs, and SPI Interface
Timing Compatible with LTC2492
TYPICAL APPLICATION
Figure 38. Easy Drive ADCs Simplify Measurement of High Impedance Sensors
VCC
fO
SCK
SDI
GND
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2492
3-WIRE
SPI INTERFACE
2492 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
IIN
+ = 0
IIN
– = 0
R1
51.1k
R4
51.1k
C4
0.1μF
C3
0.1μF
R3
10k TO 100k
–
+
102k
5V
LT1494
0.1μF
1k
10k TO 100k