AD5757 Analog Devices, AD5757 Datasheet - Page 24

• Manufacturer Part Number: AD5757
• Description: Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity
• Manufacturer: Analog Devices

Specifications of AD5757

• Resolution (bits): 16bit
• Dac Update Rate: 60kSPS
• Dac Settling Time: 15µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: SPI

AD5757
TRANSFER FUNCTION
For the 0 mA to 20 mA, 0 mA to 24 mA, and 4 mA to 20 mA
current output ranges, the output current is respectively
expressed as
where:
D is the decimal equivalent of the code loaded to the DAC.
N is the bit resolution of the DAC.
I
I
I
OUT
OUT
OUT
=
=
=
⎡
⎢
⎣
⎡
⎢
⎣
⎡
⎢
⎣
16
24
20
2
2
2
mA
mA
N
N
mA
N
⎤
⎥
⎦
⎤
⎥
⎦
⎤
⎥
⎦
×
×
×
D
D
D
+
4
mA
Rev. B | Page 24 of 44
Data Sheet