Data Sheet
AD7873
2.504
2.502
2.500
2.498
2.496
2.494
2.492
2.490
2.488
2.486
2.484
5
4
3
2
1
0
NO CAP (7µs)
SETTLING TIME
1µF CAP (1800µs)
SETTLING TIME
2.5
2.7
2.9
3.1
+V (V)
3.3
3.5
3.7
0
200
400
600
800 1000 1200 1400 1600 1800
TURN-ON TIME (µs)
CC
Figure 17. Internal VREF vs. +VCC
Figure 20. Internal VREF vs. Turn-on Time
610
609
608
607
606
605
604
603
602
601
600
850
800
750
700
650
600
550
500
450
TEMP1
95.95mV
TEMP0
142.15mV
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80
TEMPERATURE (°C)
2.7
2.8
2.9
3.0
3.1
3.2
(V)
3.3
3.4
3.5
3.6
V
SUPPLY
Figure 18. Temp Diode Voltage vs. Temperature (2.7 V Supply)
Figure 21. TEMP0 Diode Voltage vs. VSUPPLY (25°C)
730
729
728
727
726
725
724
723
722
721
720
0
fSAMPLE = 125kHz
fIN = 15kHz
SNR = 68.34dB
20
40
60
80
100
120
0
7.5
15.0
22.5
30.0
37.5
45.0
52.5
60.0
2.7
3.0
3.3
3.6
FREQUENCY (kHz)
V
(V)
SUPPLY
Figure 19. TEMP1 Diode Voltage vs. VSUPPLY (25°C)
Figure 22. Auxiliary Channel Dynamic Performance
(fSAMPLE =125 kHz, fINPUT = 15 kHz)
Rev. F | Page 11 of 28
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