Datasheet
LTC2488
30
2488fa
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 A • 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 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
LTC2411/LTC2411-1 24-Bit, No Latency ΔΣ ADCs with Differential Inputs in MSOP 1.45μV
RMS
Noise, 4ppm INL, Simultaneous 50Hz/60Hz
Rejection (LTC2411-1)
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, 4-Channel/2-Channel ΔΣ ADC with
Integrated Amplifi er
8kHz Output Rate, 220nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2449 24-Bit, High Speed, 8-Channel/16-Channel ΔΣ ADC 8kHz Output Rate, 200nV Noise, Simultaneous 50Hz/60Hz Rejection
LTC2480/LTC2482/
LTC2484
16-Bit/24-Bit ΔΣ ADCs with Easy Drive Inputs, 600nV Noise,
Programmable Gain, and Temperature Sensor
Pin Compatible with 16-Bit and 24-Bit Versions
LTC2481/LTC2483/
LTC2485
16-Bit/24-Bit ΔΣ ADCs with Easy Drive Inputs, 600nV Noise,
I
2
C Interface, Programmable Gain, and Temperature Sensor
Pin Compatible with 16-Bit and 24-Bit Versions
LTC2492 2-Channel, 14-Channel 24-Bit ΔΣ ADC with Easy Drive Inputs
and Temperature Sensor
Pin Compatible with LTC2488
LTC2496/LTC2498 16-Channel/8-Channel 16-Bit/24-Bit ΔΣ ADC with Easy Drive
Inputs and SPI Interface
Timing Compatible with LTC2492
LTC2449 High Speed 16 Input, ΔΣ ADC 8kHz Output Rate, Variable Speed Resolution
TYPICAL APPLICATION
V
CC
F
O
SCK
SDI
GND
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2492
3-WIRE
SPI INTERFACE
2488 F28
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
0.1
μF
R3
10k TO 100k
–
+
102k
5V
5V
LT1494
0.1μF
0.1μF
0.1μF
1k
1k
10k
TO 100k
Figure 28. Easy Drive ADCs Simplify Measurement of High Impedance Sensors