AD5384 Analog Devices, AD5384 Datasheet - Page 20

• Manufacturer Part Number: AD5384
• Description: 40-Channel, 3 V/5 V Single Supply,14-Bit, Serial Voltage-Output DAC
• Manufacturer: Analog Devices

Specifications of AD5384

• Resolution (bits): 14bit
• Dac Update Rate: 125kSPS
• Dac Settling Time: 8µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: I2C/Ser 2-wire,Ser,SPI

AD5384
–0.05
–0.10
–0.15
–0.20
Figure 20. AD5384-5 Output Amplifier Source and Sink Capability
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
FULL-SCALE
Figure 21. Headroom at Rail vs. Source/Sink Current
–20
REFOUT = 1.25V
0.25
Figure 22. REFOUT Noise Spectral Density
(V
3/4 SCALE
DD
1/4 SCALE
–10
–V
0.50
ZERO-SCALE
OUT
MIDSCALE
ERROR AT ZERO SINKING CURRENT
–5
) AT FULL-SCALE SOURCING CURRENT
1k
0.75
I
FREQUENCY (Hz)
SOURCE
CURRENT (mA)
–2
REFOUT = 2.5V
1.00
/I
0
SINK
(mA)
2
AV
T
REFOUT DECOUPLED
WITH 100nF CAPACITOR
1.25
AV
A
DD
= 25°C
10k
DD
= 5V
5
= DV
V
1.50
REF
T
A
DD
10
= 25°C
= 2.5V
AV
V
T
A
REF
= 5V
DD
= 25°C
1.75
20
= 2.5V
= 5V
100k
2.00
40
Rev. A | Page 20 of 36
2.456
2.455
2.454
2.453
2.452
2.451
2.450
2.449
Figure 23. AD5384-3 Output Amplifier Source and Sink Capability
–1
6
5
4
3
2
1
0
AV
T
DAC LOADED WITH MIDSCALE
EXTERNAL REFERENCE
Y AXIS = 5µV/DIV
X AXIS = 100ms/DIV
–40
0
A
MIDSCALE
DD
= 25°C
AV
V
T
A
Figure 24. Adjacent Channel DAC to DAC Crosstalk
REF
= DV
DD
= 25°C
–20
50
= 1.25V
= DV
DD
ZERO-SCALE
100
–10
Figure 25. 0.1 Hz to 10 Hz Noise Plot
= 5V
DD
= 3V
150
3/4 SCALE
–5
200
SAMPLE NUMBER
CURRENT (mA)
–2
250
0
300
1/4 SCALE
2
AV
V
T
14ns/SAMPLE NUMBER
350
A
REF
DD
AV
= 25°C
FULL-SCALE
EXITS SOFT PD
= 2.5V
5
DD
= DV
400
TO MIDSCALE
= DV
V
DD
REF
10
T
450
A
DD
= 5V
= 25°C
= 2.5V
= 5V
20
500
–40
550