LTC2440
30
2440fe
For more information www.linear.com/LTC2440
LINEAR TECHNOLOGY CORPORATION 2002
LT 0117 REV E • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC2440
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT1025 Micropower Thermocouple Cold Junction Compensator 80µA Supply Current, 0.5°C Initial Accuracy
LTC1043 Dual Precision Instrumentation Switched Capacitor
Building Block
Precise Charge, Balanced Switching, Low Power
LTC1050 Precision Chopper Stabilized Op Amp No External Components 5µV Offset, 1.6µV
P-P
Noise
LT1236A-5 Precision Bandgap Reference, 5V 0.05% Max, 5ppm/°C Drift
LT1461 Micropower Series Reference, 2.5V 0.04% Max, 3ppm/°C Max Drift
LTC1592 Ultraprecise 16-Bit SoftSpan
TM
DAC Six Programmable Output Ranges
LTC1655 16-Bit Rail-to-Rail Micropower DAC ±1LSB DNL, 600µA, Internal Reference, SO-8
LTC1799 Resistor Set SOT-23 Oscillator Single Resistor Frequency Set
LTC2053 Rail-to-Rail Instrumentation Amplifier 10µV Offset with 50nV/°C Drift, 2.5µV
P-P
Noise 0.01Hz to 10Hz
LTC2400 24-Bit, No Latency ∆∑ ADC in SO-8 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA
LTC2401/LTC2402 1-/2-Channel, 24-Bit, No Latency ∆∑ ADC in MSOP 0.6ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA
LTC2404/LTC2408 4-/8-Channel, 24-Bit, No Latency ∆∑ ADC 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA
LTC2410/LTC2413 24-Bit, No Latency ∆∑ ADC 800nV
RMS
Noise, 5ppm INL/Simultaneous 50Hz/60Hz Rejection
LTC2411 24-Bit, No Latency ∆∑ ADC in MSOP 1.45µV
RMS
Noise, 6ppm INL
LTC2420/LTC2424/
LTC2428
1-/4-/8-Channel, 20-Bit, No Latency ∆∑ ADCs 1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400/
LTC2404/LTC2408
Figure 23. Bridge Reversal Eliminates 1/f Noise and Offset Drift of a Low Noise, Non-Autozeroed,
Bipolar Amplifier. Circuit Gives 14nV Noise Level or 19 Effective Bits over a 10mV Span
REF
+
REF
–
IN
+
IN
–
V
REF
0.1µF10µF
4
LTC2440
2440 F22
+7V
LT1461-5
1k 0.1%
10Ω
100Ω 0.1%
0.047µF
1µF
1k 0.1%
10Ω
0.047µF
1µF
+
–
–
+
2X LT1677
2X SILICONIX SI9801
5,6,7,8
100k
100k
TOP_N
TOP_P
REF
1
3
2
5,6,7,8
4
100k
100k
BOTTOM_N
BOTTOM_P
V
REF
1
3
2
4
