AD5420AREZ Analog Devices Inc, AD5420AREZ Datasheet - Page 24

• Manufacturer Part Number: AD5420AREZ
• Description: IC DAC 16BIT 1CH SER 24TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD5420AREZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Design Resources: Simplified 16-Bit, 4 mA-to-20 mA Output Solution Using AD5420 (CN0098)
• Settling Time: 10µs
• Number Of Bits: 16
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 950mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP Exposed Pad, 24-eTSSOP, 24-HTSSOP
• Resolution (bits): 16bit
• Input Channel Type: Serial
• Supply Voltage Range - Digital: 2.7V To 5.5V
• Supply Current: 4mA
• Digital Ic Case Style: TSSOP
• No. Of Pins: 24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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. B | Page 24 of 28
Simultaneous Equation 2
From these two equations,
And Equation 2 becomes
I
R
I
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