LTC2489
26
2489fb
For more information www.linear.com/LTC2489
LINEAR TECHNOLOGY CORPORATION 2007
LT 1114 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC2489
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LT
®
1236A-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 DΣ ADC in SO-8 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA
LTC2410 24-bit, No Latency DΣ ADC with Differential Inputs 0.8µV
RMS
Noise, 2ppm INL
LTC2440 High Speed, Low Noise 24-bit DΣ ADC 3.5kHz Output Rate, 200nV
RMS
Noise, 24.6 ENOBs
LTC2442 24-Bit, High Speed, 4-Channel/2-Channel DΣ ADC with
Integrated Amplifier
8kHz Output Rate, 220nV
RMS
Noise, Simultaneous 50Hz/60Hz
Rejection
LTC2449 24-Bit, High Speed, 8-Channel/16-Channel DΣ ADC 8kHz Output Rate, 200nV
RMS
Noise, Simultaneous 50Hz/60Hz
Rejection
LTC2480/LTC2482/
LTC2484
16-/24-Bit DΣ ADCs with Easy Drive Inputs, 600nV
RMS
Noise,
Programmable Gain, and Temperature Sensor
Pin Compatible 16-Bit and 24-Bit Versions
LTC2481/LTC2483/
LTC2485
16-/24-Bit DΣ ADCs with Easy Drive Inputs, 600nV
RMS
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 DΣ 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 DΣ ADC with Easy Drive Inputs and
I
2
C Interface
Pin-Compatible LTC2493/LTC2489
LTC2493 24-Bit 2-/4-Channel DΣ ADC with Easy Drive Inputs,
I
2
C Interface and Temperature Sensor
Pin Compatible LTC2487/LTC2489
LTC2495/LTC2497/
LTC2499
16-Bit/24-Bit 8-/16-Channel DΣ 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/24-Bit 8-/16-Channel DΣ ADC with Easy Drive Inputs and
SPI Interface
Pin-Compatible with LTC2449/L
TC2494
Figure 28. Easy Drive ADCs Simplify Measurement of High Impedance Sensors
V
CC
f
O
SCL
SDA
GND
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2489
2-WIRE
I
2
C INTERFACE
9-PIN SELECTABLE
ADDRESSES
2489 F28
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
I
IN
+
= 0
I
IN
–
= 0
C4
0.1µF
C3
0.1µF
–
+
102k
5V
5V
LT1494
0.1µF
0.1µF
0.1μF
1k
1k
10k TO 100k
1.7k
5V
R1
51.1k
R4
51.1k
R3
10k TO 100k
