EVAL-AD5110SDZ Analog Devices, EVAL-AD5110SDZ Datasheet - Page 20

• Manufacturer Part Number: EVAL-AD5110SDZ
• Description: Digital Potentiometer Development Tools Evaluation board
• Manufacturer: Analog Devices
• Series: AD5110r

Specifications of EVAL-AD5110SDZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD5110
• Resistance: 10 kOhms
• Operating Supply Voltage: 5.5 V
• Interface Type: I2C
• Maximum Operating Temperature: + 125 C
• Factory Pack Quantity: 1

AD5110/AD5112/AD5114
INPUT SHIFT REGISTER
For the AD5110/AD5112/AD5114, the input shift register is
16 bits wide (see Figure 2). The 16-bit word consists of five
unused bits (should be set to zero), followed by three control
bits, and eight RDAC data bits. If the RDAC register is read from
or written to in the AD5112, Bit DB0 is a don’t care. The RDAC
register is read from or written to in the AD5114, Bit DB0 and
DB1 are don’t cares. Data is loaded MSB first (Bit DB15).
Table 10. Command Operation Truth Table
Command
Number
0
1
2
3
4
5
6
1
2
3
X is don’t care.
In the AD5114, this bit is a don’t care.
In the AD5112, this bit is a don’t care.
DB10
C2
0
0
0
0
1
1
1
Command
C1
0
0
1
1
0
0
1
DB8
C0
0
1
0
1
0
1
0
DB7
D7
X
X
7
MSB
1
1
X
X
X
X
D6
X
X
6
0
1
X
X
X
X
D5
5
0
1
X
X
X
X
X
X
D4
X
X
4
0
1
X
X
X
X
Data
Rev. B | Page 20 of 28
D3
X
X
3
0
1
X
X
X
X
1
D2
X
X
2
0
1
X
X
X
X
D1
X
X
1
0
1
X
X
X
A1
The three control bits determine the function of the software
command (Table 10). Figure 3 shows a timing diagram of a
typical
The command bits (Cx) control the operation of the digital
potentiometer and the internal EEPROM. The data bits (Dx)
are the values that are loaded into the decoded register.
2
DB0
D0
X
X
0
LSB
0
1
A0
X
X
A0
2, 3
AD5110/AD5112/AD5114
Operation
No operation
Write contents of RDAC register to EEPROM
Write contents of serial register data to RDAC
Top scale
Bottom scale
Software shutdown
0: shutdown off
1: shutdown on
Software reset: refresh RDAC register with EEPROM
Read contents of RDAC register
Read contents of EEPROM
A1
0
0
A0
0
1
Data
Wiper position saved
Resistor tolerance
write sequence.
Data Sheet