TYPICAL CHARACTERISTICS (Cont.)
All specifications, VDD = +5V, fOSC = 2.4576MHz, PGA = 1, fDATA = 15Hz, and VREF ≡ (REF IN+) – (REF IN–) = +2.5V, unless otherwise specified.
GAIN vs TEMPERATURE
OFFSET vs TEMPERATURE
(Cal at 25°C)
(Cal at 25°C)
1.00010
1.00006
1.00002
0.99998
0.99994
0.99990
0.99986
50
0
PGA16
PGA1
–50
PGA64
–100
–150
–200
PGA128
–50
–30
–10
10
30
50
70
90
–50
–30
–10
10
30
50
70
90
Temperature (°C)
Temperature (°C)
CURRENT vs TEMPERATURE
(Buffer Off)
INTEGRAL NONLINEARITY vs INPUT SIGNAL
260
250
240
230
220
210
200
190
10
8
–40°C
6
4
+85°C
2
0
–2
–4
–6
–8
–10
+25°C
–50
–30
–10
10
30
50
70
90
–2.5 –2.0 –1.5 –1.0 –0.5
0
0.5 1.0 1.5 2.0 2.5
Temperature (°C)
V
IN (V)
CURRENT vs VOLTAGE
SUPPLY CURRENT vs SUPPLY
350
300
250
200
150
100
50
300
250
200
150
100
50
Normal
4.91MHz
Normal
2.45MHz
Normal
2.45MHz
SLEEP
4.91MHz
Normal
4.91MHz
SLEEP
2.45MHz
SLEEP
4.91MHz
Power Down
SLEEP
2.45MHz
0
Power Down
3.5
0
–50
3.0
3.25
3.5
3.75
4.0
4.25
4.5
4.75
5.0
3.0
4.0
4.5
5.0
VDD (V)
VDD (V)
ADS1242, 1243
8
SBAS235B
www.ti.com
TI [ TEXAS INSTRUMENTS ]
