
LTC2435/LTC2435-1
42
24351fc
LINEAR TECHNOLOGY CORPORATION 2001
LT 0513 REV C PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
relaTeD parTs
Typical applicaTion
Correlated Double Sampling Resolves 100nV
–
+
–
+
U1
LT1219
U2
LT1219
5k
C1
0.1μF
C2
0.1μF
R3 10k
R6 10k
C4 2.2nF
C3 2.2nF
R4
499Ω
R5
499Ω
10V
1000pF
1k
R2
27k
10V
DIFFERENCE
AMP
33Ω
100Ω
R1
61.9Ω
0.1%
Q1
22Ω
74HC04
350Ω
×4
5V
2.7k
100Ω
1.5k
ELIMINATE FOR 5V
OPERATION (CONNECT 2.7k
RESISTORS TO 100Ω
RESISTORS)
Q4
Q5
Q2
Q3
5V
POL
Q1:
Q2, Q3:
Q4, Q5:
SILICONIX Si9802DY
(800) 554-5565
MMBD2907
MMBD3904
0.1μf
3
2
4
5
6
7
SHDN
2
3
4
5
6
7
SHDN
5
6
3
4
30pF
2435 F46
30pF
IN+
IN–
REF+
REF–
GND
LTC2435/
LTC2435-1
PART NUMBER
DESCRIPTION
COMMENTS
Precision Bandgap Reference, 2.5V, 5V
3ppm/°C Drift, 0.05% Max Initial Accuracy
Micropower Thermocouple Cold Junction Compensator
80A Supply Current, 0.5°C Initial Accuracy
Dual Precision Instrumentation Switched Capacitor
Building Block
Precise Charge, Balanced Switching, Low Power
Precision Chopper Stabilized Op Amp
No External Components 5V Offset, 1.6VP-P Noise
Precision Bandgap Reference, 5V
0.05% Max Initial Accuracy, 5ppm/°C Drift
Micropower Series Reference
0.075% Max Initial Accuracy, 10ppm/°C Max Drift,
24-Bit, No Latency ∑ ADC in SO-8
0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200A
1-/2-Channel, 24-Bit, No Latency ∑ ADCs in MSOP
0.6ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200A
4-/8-Channel, 24-Bit, No Latency ∑ ADCs with Differential Inputs 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200A
24-Bit, No Latency ∑ ADC with Differential Inputs
800nVRMS Noise, Pin Compatible with LTC2435
24-Bit, No Latency ∑ ADC with Differential Inputs in MSOP
1.45VRMS Noise, 2ppm INL,
Simultaneous 50Hz/60Hz Rejection (LTC2411-1)
24-Bit, No Latency ∑ ADC with Differential Inputs
Simultaneous 50Hz/60Hz Rejection, 800nVRMS Noise
24-Bit, No Latency ∑ ADC with 15Hz Output Rate
Pin Compatible with the LTC2435/LTC2435-1
8-/16-Channel 24-Bit, No Latency ∑ ADC
0.2ppm Noise, 2ppm INL, 3ppm Total Unadjusted Errors 200A
20-Bit, No Latency ∑ ADC in SO-8
1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400
20-Bit, No Latency ∑ ADC with Differential Inputs
2.8V Noise, SSOP-16/MSOP Package