MAX5387LAUD+ Maxim Integrated Products, MAX5387LAUD+ Datasheet - Page 11

• Manufacturer Part Number: MAX5387LAUD+
• Description: IC POT DGTL 256-TAP 14TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5387LAUD+

• Taps: 256
• Resistance (ohms): 10K
• Number Of Circuits: 2
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Volatile
• Interface: I²C, 2-Wire Serial
• 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: I2C
• 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 Low Voltage 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

Write to the devices by transmitting the device’s slave
address with NOP/W (eighth bit) set to zero, followed by
at least 2 bytes of information. The first byte of informa-
tion is the command byte. The second byte is the data
byte. The data byte goes into the internal register of the
device as selected by the command byte (Figure 7 and
Table 2).
Use the command byte to select the destination of the
wiper data. See Table 2.
REG A: The data byte writes to register A and the wiper
of potentiometer A moves to the appropriate position.
D[7:0] indicates the position of the wiper. D[7:0] = 00h
Figure 6. Slave Address
Figure 7. Command and Single Data Byte Received
S
SDA
START
SCL
BYTE MAP INTO DEVICE REGISTERS
SLAVE ADDRESS
HOW CONTROL BYTE AND DATA
______________________________________________________________________________________
0
MSB
ACKNOWLEDGE
Message Format for Writing
Dual, 256-Tap, Volatile, Low-Voltage
Command Descriptions
Linear Taper Digital Potentiometer
1
NOP/W
0
A
Command Byte
0
R7
R6
COMMAND BYTE
R5
1
R4
R3
moves the wiper to the position closest to LA. D[7:0] =
FFh moves the wiper to the position closest to HA. D[7:0]
is 80h following power-on.
Table 1. Slave Addresses
R2
A2
GND
GND
GND
GND
V
V
V
V
A2
R1
DD
DD
DD
DD
ADDRESS INPUTS
R0
A1
A
GND
GND
GND
GND
V
V
V
V
A1
DD
DD
DD
DD
D7
D6
LSB
A0
D5
1 DATA BYTE
GND
GND
GND
GND
ACKNOWLEDGE
V
V
V
V
A0
DD
DD
DD
DD
D4
D3
NOP/W
D2
SLAVE ADDRESS
D1
0101000
0101001
0101010
0101011
0101100
0101101
0101110
0101111
ACK
D0
A
P
11