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AD5678 Datasheet(PDF) 15 Page - Analog Devices

Part No. AD5678
Description  On-Chip Reference in 14-Lead TSSOP
Download  28 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD5678 Datasheet(HTML) 15 Page - Analog Devices

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AD5678
Rev. C | Page 15 of 28
6
VLOGIC (V)
8
0
1
5
6
7
2
3
4
01
234
5
VDD = 5V
VDD = 3V
TA = 25°C
Fi
e
gure 29. Supply Current vs. Logic Input Voltag
TIME BASE = 4
μs/DIV
VDD = VREF = 5V
TA = 25°C
FULL-SCALE CODE CHANGE
0x0000 TO 0xFFFF
OUTPUT LOADED WITH 2kΩ
AND 200pF TO GND
VOUT = 909mV/DIV
1
Figure 30. Full-Scale Settling Time, 5 V
CH1 2.0V
CH2 500mV
M100
μs 125MS/s
A CH1
1.28V
8.0ns/pt
VDD = VREF = 5V
TA = 25°C
VOUT
VDD
1
2
MAX(C2)*
420.0mV
Figure 31. Power-On Reset to 0 V
CH1 2.0V
CH2 1.0V
M100
μs 125MS/s
A CH1
1.28V
8.0ns/pt
VDD = VREF = 5V
TA = 25°C
VOUT
VDD
1
2
Fig
le
ure 32. Power-On Reset to Midsca
VDD = 5V
SYNC
SLCK
VOUT
1
3
CH1 5.0V
CH3 5.0V
CH2 500mV
M400ns
A CH1
1.4V
2
Figure 33. Exiting Power-Down to Midscale
SAMPLE
2.505
2.485
0
512
64
128
192
256
320
384
448
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
4ns/SAMPLE NUMBER
GLITCH IMPULSE = 3.55nV-s
1 LSB CHANGE AROUND
MIDSCALE (0x8000 TO 0x7FFF)
2.486
2.487
2.488
2.489
2.490
2.491
2.492
2.493
2.494
2.495
2.496
2.497
2.498
2.499
2.500
2.501
2.502
2.503
2.504
Figure 34. Digital-to-Analog Glitch Impulse (Negative)


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