Datasheet

ADS7807
6
SBAS022D
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At 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.
3
2
1
0
–1
–2
–3
3
2
1
0
–1
–2
–3
16-Bit (LSBs)16-Bit (LSBs)
0 8192 16384 24576 32768
Decimal Code
40960 49152 57344 65535
All Codes INL
All Codes DNL
LINEARITY ERROR vs CODE
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
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)
INTERNAL REFERENCE VOLTAGE vs TEMPERATURE
Temperature (°C)
–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)
CONVERSION TIME vs TEMPERATURE
Temperature (°C)
–75 –50 –25 0 25 50 75 100 125 150
19.4
19.2
19
18.8
18.6
Conversion Time (µs)