AD5381 Analog Devices, AD5381 Datasheet - Page 20

• Manufacturer Part Number: AD5381
• Description: 40-Channel 12-Bit 3 V/5 V Single-Supply Voltage-Output DAC
• Manufacturer: Analog Devices

Specifications of AD5381

• Resolution (bits): 12bit
• Dac Update Rate: 167kSPS
• Dac Settling Time: 6µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Par,Ser,SPI

AD5381
Figure 21. AD5381-5 Output Amplifier Source and Sink Capability
–0.05
–0.10
–0.15
–0.20
0.20
0.15
0.10
0.05
600
500
400
300
200
100
–1
6
5
4
3
2
1
0
0
0
–40
100
0
Figure 22. Headroom at Rails vs. Source/Sink Current
FULL SCALE
–20
REFOUT = 1.25V
0.25
Figure 23. REFOUT Noise Spectral Density
(VDD–VOUT) AT FULL-SCALE SOURCING CURRENT
3/4 SCALE
1/4 SCALE
–10
0.50
ZERO SCALE
MIDSCALE
ERROR AT ZERO SINKING CURRENT
–5
1k
0.75
I
SOURCE
FREQUENCY (Hz)
CURRENT (mA)
–2
1.00
REFOUT = 2.5V
/I
0
SINK
(mA)
AVDD = DVDD = 5V
2
AVDD = 5V
T
REFOUT DECOUPLED
WITH 100nF CAPACITOR
1.25
A
10k
= 25°C
5
V
1.50
REF
T
A
10
= 25°C
AVDD = 5V
V
T
= 2.5V
A
REF
= 25°C
1.75
20
= 2.5V
100k
2.00
40
Rev. B | Page 20 of 40
Figure 24. AD5381-3 Output Amplifier Source and Sink Capability
2.456
2.455
2.454
2.453
2.452
2.451
2.450
2.449
–1
6
5
4
3
2
1
0
AVDD = DVDD = 5V
T
DAC LOADED WITH MIDSCALE
EXTERNAL REFERENCE
Y AXIS = 5μV/DIV
X AXIS = 100ms/DIV
–40
A
0
MIDSCALE
Figure 25. Adjacent Channel DAC-to-DAC Crosstalk
= 25°C
AVDD = DVDD = 3V
V
T
REF
A
–20
= 25°C
50
= 1.25V
ZERO SCALE
100
Figure 26. 0.1 Hz to 10 Hz Noise Plot
–10
150
3/4 SCALE
–5
200
SAMPLE NUMBER
CURRENT (mA)
–2
250
0
300
1/4 SCALE
2
AVDD = DVDD = 5V
V
T
14ns/SAMPLE NUMBER
350
REF
A
AV
= 25°C
FULL SCALE
EXITS SOFT PD
= 2.5V
5
DD
400
TO MIDSCALE
= DV
V
REF
T
10
450
A
DD
= 25°C
= 2.5V
= 5V
20
500
–40
550