Datasheet

Data Sheet AD7873
Rev. F | Page 11 of 28
Figure 17. Internal V
REF
vs. +V
CC
Figure 18. Temp Diode Voltage vs. Temperature (2.7 V Supply)
Figure 19. TEMP1 Diode Voltage vs. V
SUPPLY
(25°C)
Figure 20. Internal V
REF
vs. Turn-on Time
Figure 21. TEMP0 Diode Voltage vs. V
SUPPLY
(25°C)
Figure 22. Auxiliary Channel Dynamic Performance
(f
SAMPLE
=125 kHz, f
INPUT
= 15 kHz)
2.484
2.486
2.488
2.490
2.492
2.494
2.496
2.498
2.500
2.502
2.504
V
REF
(V)
2.9 3.12.5 2.7 3.3 3.5 3.7
+V
CC
(V)
02164-017
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80
450
500
550
600
650
700
TEMP DIODE VOLTAGE (mV)
750
800
850
TEMPERATURE (°C)
95.95mV
TEMP1
TEMP0
142.15mV
02164-018
720
721
722
723
724
725
726
727
728
729
730
TEMP1 DIODE VOLTAGE (mV)
V
SUPPLY
(V)
2.7 3.33.0 3.6
02164-019
INTERNAL V
REF
(V)
TURN-ON TIME (µs)
0
1
2
3
4
5
0 200 400 600 800 1000 1200 1400 1600 1800
NO CAP (7µs)
SETTLING TIME
1µF CAP (1800µs)
SETTLING TIME
02164-020
600
601
602
603
604
605
606
607
608
609
610
TEMP0 DIODE VOLTAGE (mV)
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
V
SUPPLY
(V)
02164-021
120
100
80
60
40
20
0
SNR (dB)
30.022.57.5 15.00 37.5 45.0 52.5 60.0
FREQUENCY (kHz)
f
SAMPLE
= 125kHz
f
IN
= 15kHz
SNR = 68.34dB
02164-022