Datasheet

Figure 1. Voltage-Divider/Variable-Resistor Configurations
PIN
NAME FUNCTION
MAX5386 MAX5388
1 3 HB
Resistor B High Terminal. The voltage at HB can be higher or lower than the voltage at
LB. Current can ow in to or out of HB.
2 4 WB Resistor B Wiper Terminal
3 2 LB
Resistor B Low Terminal. The voltage at LB can be higher or lower than the voltage at
HB. Current can ow in to or out of LB.
4 — I.C. Internally Connected. Connect to GND.
5 1 GND Ground. Both pins must be grounded.
6, 7, 11, 13 — N.C. No Connection. Not internally connected.
8 5
CS
Active-Low Chip-Select Input
9 6 DIN Serial-Interface Data Input
10 7 SCLK Serial-Interface Clock Input
12 8 V
DD
Power-Supply Input. Bypass V
DD
to GND with a 0.1µF capacitor close to the device.
14 — HA
Resistor A High Terminal. The voltage at HA can be higher or lower than the voltage at
LA. Current can ow in to or out of HA.
15 9 WA Resistor A Wiper Terminal
16 10 LA
Resistor A Low Terminal. The voltage at LA can be higher or lower than the voltage at
HA. Current can ow in to or out of LA.
— — EP Exposed Pad (TQFN Only). Internally connected to GND. Connect to ground.
H
L
W
VOLTAGE-DIVIDER
CONFIGURATION
VARIABLE-RESISTOR
CONFIGURATION
N.C.
L
W
MAX5386/MAX5388 Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
www.maximintegrated.com
Maxim Integrated │ 7
Pin Description