DS1855B-020 Maxim Integrated Products, DS1855B-020 Datasheet - Page 3

• Manufacturer Part Number: DS1855B-020
• Description: Digital Potentiometer ICs
• Manufacturer: Maxim Integrated Products

Specifications of DS1855B-020

• Number Of Pots: Dual
• Taps Per Pot: 100, 256
• Resistance: 10 KOhms, 20 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire)
• Operating Supply Voltage: 3 V, 5 V
• Supply Current: 500 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Package / Case: CSBGA-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS1855 BLOCK DIAGRAM Figure 1
Up to eight DS1855s can be installed on a single 2-wire bus. Access to an individual device is achieved
by using a device address that is determined by the logic levels of address pins A0 through A2.
Additionally, the DS1855 will operate from 3V or 5V supplies. Three package options are available: 14-
pin TSSOP, 16-ball CSBGA, and flip-chip package.
V
GND
SDA
SCL
WP
A0
A1
A2
CC
2-WIRE
INTERFACE
CONTROL
DATA
248 BYTES
EEPROM
MEMORY
1 BYTE WIPER
SETTING
POT 0
1 BYTE WIPER
SETTING
POT 1
CONFIGURATION
BYTE
LOCK BYTE
LOCK BYTE
RESERVED
3 of 3
POTENTIOMETER 0
POTENTIOMETER 1
Position
Position
100-
256-
Pot
Pot
H0
W0
L0
H1
W1
L1