Datasheet

ADS7806
6
SBAS021B
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
T
A
= +25°C, f
S
= 40kHz, V
DIG
= V
ANA
= +5V, and using internal reference and fixed resistors (see Figure 7b), unless otherwise specified.
0.10
0
–0.10
0.10
0
–0.10
12-Bit (LSBs)12-Bit (LSBs)
0 512 1024 1536 2048
Decimal Code
2560 3072 3584 4095
All Codes INL
All Codes DNL
POWER-SUPPLY RIPPLE SENSITIVITY
INL/DNL DEGRADATION PER LSB OF P-P RIPPLE
Power-Supply Ripple Frequency (Hz)
10
1
10
2
10
3
10
4
10
5
10
6
10
7
1
10
–1
10
–2
10
–3
10
–4
10
–5
Linearity Degradation (LSB/LSB)
INL
DNL
INTERNAL REFERENCE VOLTAGE vs TEMPERATURE
–75 –50 –25 0 25 50 75 100 125 150
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
Internal Reference (V)
Temperature (°C)
CONVERSION TIME vs TEMPERATURE
15.10
15.00
14.90
14.80
14.70
14.60
14.50
14.40
14.30
14.20
–75 –50 –25 0 25 50 75 100 125 150
Temperature (°C)
Conversion Time (
µ
s)
3
2
1
0
–1
–2
0.20
0
–0.20
0.20
0
–0.20
mV From Ideal
Percent
From Ideal
Percent
From Ideal
–75 –50 –25 0 25
Temperature (°C)
50 75 100 125 150
ENDPOINT ERRORS (20V Bipolar Range)
BPZ Error
+F
S
Error
–F
S
Error
3
2
1
0
–1
–2
0.40
0.20
0
0.40
0.20
0
mV From Ideal
Percent
From Ideal
Percent
From Ideal
–75 –50 –25 0 25
Temperature (°C)
50 75 100 125 150
ENDPOINT ERRORS (Unipolar Ranges)
UPO Error
+F
S
Error (4V Range)
–F
S
Error (5V Range)