Datasheet

AD7685
Rev. C | Page 12 of 28
02968-017
INPUT LEVEL (dB)
0–10 –8 –6 –4 –2
THD (dB)
–120
–
105
–110
–115
SNR REFERENCE TO FULL SCALE (dB)
95
94
93
92
91
90
SNR
THD
02968-020
TEMPERATURE (°C)
125–55 –35 –15 5 25 45 65 85 105
OPER
A
TING CURRENTS (µA)
1000
750
500
250
0
VDD = 5V
VIO
f
S
= 100kSPS
VDD = 2.5V
Figure 19. SNR and THD vs. Input Level Figure 22. Operating Currents vs. Temperature
02968-021
TEMPERATURE (°C)
125–55 –35 –15 5 25 45 65 85 105
OFFSET, GAIN ERROR (LSB)
6
4
5
2
3
0
1
–2
–1
–4
–3
–6
–5
GAIN ERROR
OFFSET ERROR
02968-018
SUPPLY (V)
5.52.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1
OPER
A
TING CURRENTS (µA)
1000
750
500
250
0
VDD
VIO
f
S
= 100kSPS
Figure 23. Offset and Gain Error vs. Temperature
Figure 20. Operating Currents vs. Supply
02968-022
SDO CAPACITIVE LOAD (pF)
120020406080100
t
DSDO
DELAY (ns)
25
20
15
10
5
0
VDD = 2.5V, 85°C
VDD = 3.3V, 25°C
VDD = 3.3V, 85°C
VDD = 5V, 85°C
VDD = 5V, 25°C
VDD = 2.5V, 25°C
02968-019
TEMPERATURE (°C)
125–55 –35 –15 5 25 45 65 85 105
POWER-DOWN CURRENTS (nA)
1000
750
500
250
0
VDD + VIO
Figure 24. t
DSDO
Delay vs. Capacitance Load and Supply
Figure 21. Power-Down Currents vs. Temperature