MAX5386NATE+ Maxim Integrated Products, MAX5386NATE+ Datasheet - Page 11

• Manufacturer Part Number: MAX5386NATE+
• Description: IC DGTL POT 256TAP DUAL 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX5386NATE+

• Taps: 256
• Resistance (ohms): 100K
• Number Of Circuits: 2
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Volatile
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Resistance In Ohms: 100K
• Number Of Pots: Dual
• Taps Per Pot: 256
• Resistance: 150 Ohms
• Wiper Memory: Volatile
• Digital Interface: Serial (3-Wire, SPI)
• Operating Supply Voltage: 2.6 V to 5.5 V
• Supply Current: 1 uA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Description/function: Dual Volatile Low Voltage Linear Taper Digital Potentiometer
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.6 V
• Tolerance: 25 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8 shows a variable gain current-to-voltage con-
verter using a potentiometer as a variable resistor.
Figure 9 shows a positive LCD bias control circuit using
a potentiometer as a voltage-divider.
Figure 9. Positive LCD Bias Control Using a Voltage-Divider
Figure 8. Variable Gain I-to-V Converter
Variable Gain Current to Voltage Converter
I S
+5V
______________________________________________________________________________________
H
L
W
R3
Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
V
OUT
+30V
W
= I
S
x ((R3 x (1 + R2/R1)) + R2)
LCD Bias Control
H
L
R1
V OUT
R2
V OUT
Figure 10 shows a programmable filter using a dual
potentiometer.
Figure 11 shows an offset voltage adjustment circuit
using a dual potentiometer.
Figure 11. Offset Voltage Adjustment Circuit
Figure 10. Programmable Filter
V IN
Offset Voltage Adjustment Circuit
HB
WB
R3
LB
HB
WB
WA
+5V
LB
HA
HA
LA
Programmable Filter
R2
R1
WA
V OUT
LA
V OUT
11