AD5757 Analog Devices, AD5757 Datasheet - Page 20

• 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
REFERENCE
–100
–150
150
100
–50
Figure 39. REFOUT Output Noise (0.1 Hz to 10 Hz Bandwidth)
16
14
12
10
–2
–1
–2
–3
50
8
6
4
2
0
4
3
2
1
0
0
0
0
0
Figure 40. REFOUT Output Noise (100 kHz Bandwidth)
AV
T
A
DD
= 25°C
AV
T
AV
REF
T
A
= 15V
Figure 38. REFOUT Turn-On Transient
A
0.2
DD
= 25°C
DD
= 25°C
OUT
2
= 15V
5
0.4
4
TIME (ms)
TIME (ms)
TIME (s)
0.6
10
6
0.8
15
8
1.0
1.2
1
20
0
Rev. B | Page 20 of 44
This second shift is due to the relaxation of stress incurred during soldering.)
PCB, the reference shifts due to thermal shock on the package. The average
shows that the outputs typically shift back 2 mV toward their initial values.
output voltage shift is –4 mV. Measurement of these parts after seven days
Figure 41. REFOUT vs. Temperature (When the AD5757 is soldered onto a
5.00000
4.99995
4.99990
4.99985
4.99980
4.99975
4.99970
4.99965
4.99960
5.002
5.001
5.000
4.999
4.998
4.997
4.996
4.995
5.0050
5.0045
5.0040
5.0035
5.0030
5.0025
5.0020
5.0015
5.0010
5.0005
5.0000
0
–40
10
T
A
= 25°C
–20
Figure 42. REFOUT vs. Load Current
2
Figure 43. REFOUT vs. Supply
15
0
LOAD CURRENT (mA)
30 DEVICES SHOWN
AV
TEMPERATURE (°C)
4
DD
20
= 15V
20
AV
DD
(V)
40
6
25
60
Data Sheet
AV
T
A
8
DD
= 25°C
80
= 15V
30
100
1
0