MAX5391 Просмотр технического описания (PDF) - Maxim Integrated
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MAX5391 Datasheet PDF : 14 Pages
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MAX5391/MAX5393
Dual 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
Variable-Gain Current-to-Voltage Converter
Figure 8 shows a variable-gain current-to-voltage con-
verter using a potentiometer as a variable resistor.
LCD Bias Control
Figure 9 shows a positive LCD bias control circuit using a
potentiometer as a voltage-divider.
Programmable Filter
Figure 10 shows a programmable filter using a dual
potentiometer.
Offset Voltage Adjustment Circuit
Figure 11 shows an offset voltage adjustment circuit using
a dual potentiometer.
Chip Information
PROCESS: BiCMOS
R3
H_
W_
R1 R2
IS
L_
VOUT
VOUT = -IS x ((R3 x (1 + R2/R1)) + R2)
Figure 8. Variable Gain I-to-V Converter
VIN
HB
WB
LB
R3
R1
HA
WA
R2
LA
VOUT
Figure 10. Programmable Filter
+1.8V
H_
W_
L_
VOUT
Figure 9. Positive LCD Bias Control Using a Voltage-Divider
+1.8V
HA
VIN
WA
LA
VOUT
HB
WB
LB
Figure 11. Offset Voltage Adjustment Circuit
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