AD5757 Analog Devices, AD5757 Datasheet - Page 17

• 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
Figure 27. Output Current Settling with DC-to-DC Converter vs. Time and
Figure 26. Output Current and V
30
25
20
15
10
–0.50 –0.25
30
25
20
15
10
–0.25
5
0
5
0
0
0
0.25
Temperature (See Figure 56)
Converter (See Figure 56)
0.25
0.50
0.50 0.75
TIME (ms)
0mA TO 24mA RANGE
1kΩ LOAD
f
INDUCTOR = 10µH (XAL4040-103)
AV
T
TIME (ms)
0mA TO 24mA RANGE
1kΩ LOAD
f
INDUCTOR = 10µH (XAL4040-103)
AV
SW
0.75
SW
A
BOOST_x
CC
= 25°C
CC
= 410kHz
I
I
I
= 410kHz
OUT
OUT
OUT
= 5V
= 5V
1.00
1.00 1.25
Settling Time with DC-to-DC
, T
, T
, T
A
A
A
= –40°C
= +25°C
= +105°C
1.25
I
V
OUT
BOOST
1.50 1.75 2.00
1.50
1.75
Rev. B | Page 17 of 44
Figure 28. Output Current Settling with DC-to-DC Converter vs. Time and
Figure 29. Output Current Settling Time with External PMOS Transistor
30
25
20
15
10
25
20
15
10
–0.25
5
0
5
0
–5
0
0.25
0
AV
0.50
CC
(See Figure 56)
5
TIME (ms)
0mA TO 24mA RANGE
1kΩ LOAD
f
INDUCTOR = 10µH (XAL4040-103)
T
TIME (µs)
0.75
SW
A
T
EXTERNAL PMOS (NTLJS4149)
4mA TO 20mA RANGE
R
V
= 25°C
A
LOAD
BOOST_X
I
I
I
= 410kHz
OUT
OUT
OUT
= 25°C
I
I
OUT
OUT
1.00
, AV
, AV
, AV
= 300Ω
10
(4mA TO 20mA STEP)
(20mA TO 4mA STEP)
CC
CC
CC
= 24V
1.25
= 4.5V
= 5.0V
= 5.5V
1.50
15
1.75
AD5757
20