MAX5389LAUD+ Maxim Integrated Products, MAX5389LAUD+ Datasheet - Page 11

• Manufacturer Part Number: MAX5389LAUD+
• Description: IC POT DGTL 256-TAP 14TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5389LAUD+

• Taps: 256
• Resistance (ohms): 10K
• Number Of Circuits: 2
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Volatile
• Interface: Up/Down
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Resistance In Ohms: 10K
• Number Of Pots: Dual
• Taps Per Pot: 256
• Resistance: 200 Ohms
• Wiper Memory: Volatile
• Digital Interface: Up/Down
• 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 Up/Down Interface 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 7 shows a variable gain current to voltage con-
verter using a potentiometer as a variable resistor.
Figure 8 shows a positive LCD bias control circuit using
a potentiometer as a voltage-divider.
Figure 9 shows a positive LCD bias control circuit using
a potentiometer as a variable resistor
Figure 7. Variable Gain I-to-V Converter
Figure 8. Positive LCD Bias Control Using a Voltage-Divide
Variable Gain Current to Voltage Converter
I S
+5V
______________________________________________________________________________________
H
L
W
R3
Dual, 256-Tap, Volatile, Low-Voltage
V
OUT
W
= -
Linear Taper Digital Potentiometer
I S
x
LCD Bias Control
((R3 x (1 + R2/R1)) + R2)
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 9. Positive LCD Bias Control Using a Variable Resistor
Figure 10. Programmable Filter
V
IN
HB
Offset Voltage Adjustment Circuit
+5V
H
L
R3
W
WA
WB
LB
HA
LA
Programmable Filter
R2
R1
V
OUT
V
OUT
11