AD5757 Analog Devices, AD5757 Datasheet - Page 19

• 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

Data Sheet
DC-TO-DC BLOCK
Figure 33. Efficiency at V
Figure 34. Efficiency at V
Figure 35. Output Efficiency vs. Output Current (See Figure 56)
90
85
80
75
70
65
60
55
50
80
70
60
50
40
30
20
90
85
80
75
70
65
60
55
50
–40
0
0
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
AV
f
INDUCTOR = 10µH (XAL4040-103)
SW
–20
CC
AV
AV
AV
= 410kHz
AV
AV
AV
4
20mA
4
= 5V
CC
CC
CC
CC
CC
CC
= 4.5V
= 5V
= 5.5V
= 4.5V
= 5V
= 5.5V
0
SET
8
8
BOOST_x
TEMPERATURE (°C)
BOOST_x
CURRENT (mA)
CURRENT (mA)
20
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
f
INDUCTOR = 10µH (XAL4040-103)
T
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
f
INDUCTOR = 10µH (XAL4040-103)
T
vs. Output Current (See Figure 56)
SW
SW
A
A
vs. Temperature (See Figure 56)
= 25°C
12
= 25°C
12
= 410kHz
= 410kHz
40
SET
SET
16
16
60
80
20
20
100
2
2
4
4
Rev. B | Page 19 of 44
0.6
0.5
0.4
0.3
0.2
0.1
Figure 36. Output Efficiency vs. Temperature (See Figure 56)
80
70
60
50
40
30
20
0
–40
–40
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
AV
f
INDUCTOR = 10µH (XAL4040-103)
Figure 37. Switch Resistance vs. Temperature
SW
–20
–20
CC
= 410 kHz
20mA
= 5V
0
0
SET
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
40
40
60
60
80
80
AD5757
100
100