MAX5389 MAXIM [Maxim Integrated Products], MAX5389 Datasheet - Page 8

• Manufacturer Part Number: MAX5389
• Description: Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer
• Manufacturer: MAXIM [Maxim Integrated Products]

Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometer
8
PIN
10
11
12
13
14
______________________________________________________________________________________
1
2
3
4
5
6
7
8
9
NAME
INCB
INCA
UDA
UDB
GND
CSA
CSB
V
WA
WB
HA
HB
LA
LB
DD
Active-Low Register A Chip-Select Input. Drive CSA low to change wiper position WA through INCA and UDA.
Register A Up/Down Control Input. With UDA low, a high-to-low transition at INCA decrements the WA posi-
tion towards LA. With UDA high, a high-to-low transition at INCA increments WA position toward HA.
Register B Up/Down Control Input. With UDB low, a high-to-low transition at INCB decrements the WB posi-
tion towards LB. With UDB high, a high-to-low transition at INCB increments WB position toward HB.
Power-Supply Input. Bypass V
Resistor A Wiper Terminal
Resistor A High Terminal. The voltage at HA can be higher or lower than the voltage at LA. Current can flow
into or out of HA.
Resistor A Low Terminal. The voltage at LA can be higher or lower than the voltage at HA. Current can flow
into or out of LA.
Resistor B Low Terminal. The voltage at LB can be higher or lower than the voltage at HB. Current can flow
into or out of LB.
Resistor B High Terminal. The voltage at HB can be higher or lower than the voltage at LB. Current can flow
into or out of HB.
Resistor B Wiper Terminal
Ground
Register B Wiper Increment Control Input. With UDB low, a high-to-low transition at INCB decrements the
WB position towards LB. With UDB high, a high-to-low transition at INCB increments WB position toward HB.
Register A Wiper Increment Control Input. With UDA low, a high-to-low transition at INCA decrements the
WA position towards LA. With UDA high, a high-to-low transition at INCA increments WA position toward HA.
Active-Low Register B Chip-Select Input. Drive CSB low to change wiper position WA through INCB and UDB.
DD
CSA
UDA
UDB
V
TOP VIEW
WA
HA 6
DD
LA
to GND with a 0.1FF capacitor close to the device.
1
2
3
4
5
7
+
MAX5389
FUNCTION
14
13
12
11
10 WB
9
8
CSB
INCA
INCB
GND
HB
LB
Pin Configuration
Pin Description