TC9400_06 Datasheet, PDF (13/24 Pages) Microchip Technology – Voltage-to-Frequency/Frequency-to-Voltage Converters

TC9400/9401/9402
V+ = 8V to 15V (Fixed)
0.9
R₁
Gain
Adjust
Offset
Adjust
R_IN
1 MΩ
V_IN
0V–10V
R₂
5V
V₂
2
6
8.2
0.01
kΩ
μF
14
TC9400
10 kΩ
8
F_OUT
10 kΩ
2
kΩ
7
0.01 ¹¹
V_REF
μF
0.2
R₁
12
5
820
pF
180
pF 3 _IIN
I_IN
14
10
9
F_OUT/2
100 kΩ
FIGURE 5-3:
V+ ^R1 ^R2
10V 1 MΩ 10 kΩ
12V 1.4 MΩ 14 kΩ
15V 2 MΩ 20 kΩ
1
F_OUT = I_{IN (V2 – V7) (CREF)}
I_IN
=
(V_IN – V₂)
R_IN
+
(V+ – V₂)
(0.9R₁ + 0.2R₁)
Fixed Voltage – Single Supply Operation
© 2006 Microchip Technology Inc.
DS21483C-page 13