AD5640 Analog Devices, AD5640 Datasheet - Page 14

• Manufacturer Part Number: AD5640
• Manufacturer: Analog Devices

Specifications of AD5640

• 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: Ser,SPI

AD5620/AD5640/AD5660
Figure 31. Digital-to-Analog Glitch Impulse—AD5660-2/AD5660-3
2.501250
2.501000
2.500750
2.500500
2.500250
2.500000
2.499750
2.499500
2.499250
2.499000
2.498750
2.498500
2.498250
2.498000
1
2
3
1
3
CH1 1.20V
CH3
CH1 2.00V
CH3
0
100mV
50.0mV
Figure 29. Power-On Reset to 0 V—AD5660-1
Figure 30. Exiting Power-Down to Midscale
V
50
V
V
REF
DD
OUT
CH2 1.00V
100
SCLK
150 200 250
SAMPLE NUMBER
V
V
T
13nS/SAMPLE NUMBER
1LSB CHANGE AROUND MIDSCALE
GLITCH IMPULSE = 0.497nV-s
M100s
M1.00s
A
DD
REFOUT
(0x7FFF TO 0x8000)
= 25C
= 5V
300
= 2.5V
V
350 400
OUT
CH2
CH1
V
DD
450 500 550
520mV
= 3V
1.87V
Rev. F | Page 14 of 28
2.500250
2.500200
2.500150
2.500100
2.500050
2.500000
2.499950
2.499900
2.499850
2.499800
2.499750
2.499700
2.499650
2.499600
1.250800
1.250600
1.250400
1.250200
1.250000
1.249800
1.249600
1.249400
1.249200
1.249000
1.248800
1.248600
1.248400
16
14
12
10
Figure 32. Digital-to-Analog Glitch Impulse—AD5660-1
8
6
4
0
0
0
T
A
Figure 34. Settling Time vs. Capacitive Load
= 25C
1
50
50
100
Figure 33. Digital Feedthrough
100
2
150 200 250
150 200 250
3
CAPACITANCE (nF)
SAMPLE NUMBER
SAMPLE NUMBER
4
V
V
T
13nS/SAMPLE NUMBER
1LSB CHANGE AROUND MIDSCALE
GLITCH IMPULSE = 0.284nV-s
V
T
20nS/SAMPLE NUMBER
DAC LOADED WITH MIDSCALE
DIGITAL FEEDTHROUGH = 0.06nV-s
DD
REFOUT
A
(0x7FFF TO 0x8000)
DD
A
= 25C
5
= 25C
= 3V
= 5V
300
300
= 1.25V
V
6
DD =
350 400
350 400
V
3V
7
DD =
5V
8
450 500 550
450 500 550
9
10