REF200 Datasheet, PDF (10/15 Pages) Burr-Brown (TI) – DUAL CURRENT SOURCE/CURRENT SINK

RTD
Cable Shield
200µA
Reference
Current
R_OFFSET
INA110
Instrumentation Amplifier
V_OUT = Gain • 200µA • ∆ RTD
200µA
Compensation
Current
+V_S
8 7 65
I
O
AB
12
C
34
REF200
–V_S
FIGURE 11. RTD Excitation With Three Wire Lead Resistance Compensation.
OPA602
Triangle Output
C
Square Output
R
10kΩ
Frequency = 1/4RC (Hz)
Frequency = 25/C (Hz)
(C is in µF and R = 10kΩ)
1N4148
1N4148
1/2
REF200
1N4148
1N4148
2Vp-p
2Vp-p
Bidirectional
Current Source
FIGURE 12. Precision Triangle Waveform Generator.
®
REF200
10