Epson SCI 7654 Series Technical Manual page 15

SCI7661 Series
Simultaneous Voltage Conversion
Combining a standard voltage tripler circuit with one
for positive voltage conversion generates both –15 and
8.2V outputs from a single input, however, it also raises
the output impedance.
A voltage doubler generates –10 and 3.8V outputs.
V = 0 V
DD
10 F
D1
+
10 F
D2
10 F
+
10 F
5 V
D3
10 F
+
V = 8.2 V
O2
V = –5 V
I
Potential levels
V = 8.2V
O2
V = 0 V
DD
V = –5 V
I
V = –15 V
O1
2–14
1 14
2 13
ROSC
1 M
3 12
4 11
5 10
6 9
V
O1
7 8
+ 10 F
Using an External Gradient
The SCI7661C
gradients— –0.1, –0.4 and –0.6%/ C.
To set the gradient externally, place a thermistor, R
series with the variable resistor, R
output voltage.
1
2
3
4
5
6
= –15 V
7
EPSON
/M offers three built-in temperature
0B 0B
, used to adjust the
RV
14
13
+
12
10 F
11
10
9
8
, in
T
V
DD
R1
R
RV
R R
T P
V
REG
SCI7000 Series
Technical Manual