AD5410 Analog Devices, AD5410 Datasheet - Page 24

• Manufacturer Part Number: AD5410
• Description: Single-Channel, 12-/16-Bit, Serial Input, 4 mA to 20 mA, Current Source DAC
• Manufacturer: Analog Devices

Specifications of AD5410

• Resolution (bits): 12bit
• Max Pos Supply (v): +26.4V
• Dac Input Format: SPI

AD5410/AD5420
Using this information and Equation 2, two simultaneous
equations can be generated from which the values of R3 and
I
Simultaneous Equation 1
BIAS
can be calculated as follows:
⇒
I
I
OUT
BIAS
I
BIAS
=
=
V
. 0
R
=
R
3
07955446
3
V
R
−
R
R
3
3
I
3
BIAS
−
I
OUT
−
. 0
00147965
Rev. C | Page 24 of 28
Simultaneous Equation 2
From these two equations,
And Equation 2 becomes
I
I
R
BIAS
OUT
3 =
=
=
41
41
. 0
.
V
302
94639628
.
R
302
3
R
3
Ω and
−
446
−
5 .
I
. 0
BIAS
µA
02246754
=
446
5 .
μA