Datasheet

ADS7846
7
SBAS125H
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= +25°C, +V
CC
= +2.7V, V
REF
= External +2.5V, f
SAMPLE
= 125kHz, and f
CLK
= 16 • f
SAMPLE
= 2MHz, unless otherwise noted.
2.4865
2.4860
2.4855
2.4850
2.4845
2.4840
V
REF
(V)
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
V
CC
(V)
INTERNAL V
REF
vs V
CC
850
800
750
700
650
600
550
500
450
TEMP Diode Voltage (mV)
Temperature (°C)
–40 –35 –30 –25 –20 –15 –10 –05
0
05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
TEMP DIODE VOLTAGE
vs TEMPERATURE (2.7V SUPPLY)
102.7mV
132.25mV
TEMP0
TEMP1
100
80
60
40
20
0
Internal V
REF
(%)
0
200
400
600
800
1000
1200
INTERNAL V
REF
vs TURN-ON TIME
Turn-On Time (µS)
1µF Cap
(1110µS)
12-Bit
Settling
No Cap
(52µS)
12-Bit
Settling
620
618
616
614
612
610
2.7
3.0
3.3
V
SUPPLY
(V)
TEMP0 DIODE VOLTAGE vs V
SUPPLY
(25°C)
TEMP0 Diode Voltage (mV)
732
730
728
726
724
722
2.7
3.0
3.3
V
SUPPLY
(V)
TEMP1 DIODE VOLTAGE vs V
SUPPLY
(25°C)
TEMP1 Diode Voltage (mV)