3
+In
RG
–In
7
AIN3N
AIN3P
5
1
8
AIN2P
AIN2N
AIN4N
AIN4P
REFIN
REFOUT
AVDD
INA118
6
4
2
AGND
R1
AIN1P
1.0µF
10kΩ
–5V
AIN1N
AGND
VBIAS
CS
AGND
AGND
+5V
ADS1213U, P
AGND
MODE
DRDY
SDOUT
SDIO
1N4148
R2
13kΩ
AGND
DVDD
DGND
C1
6pF
DSYNC
XIN
XTAL
XOUT
SCLK
DVDD
DGND
DVDD
C2
6pF
DGND
DGND
FIGURE 44. Dual Supply, High-Accuracy Thermocouple Interface with Cold Junction Compensation.
R1
6kΩ
–In
+In
A
INP
REFIN
REFOUT
AVDD
10kΩ
1.0µF
AIN
N
AGND
VBIAS
CS
AVDD
AGND
MODE
DRDY
SDOUT
SDIO
AVDD
6
AGND
DVDD
ADS1212
8
5
7
C1
6pF
DSYNC
XIN
REF200
100µA
100µA
I
O
XTAL
XOUT
DGND
SCLK
A
B
C
DVDD
DVDD
C2
6pF
DGND
1
2
3
4
DGND
AGND
FIGURE 45. Low-Cost Bridge Transducer Interface with Current Excitation.
ADS1212, 1213
39
SBAS064A
BB [ BURR-BROWN CORPORATION ]
