ADS1242, 1243

8

SBAS235H

www.ti.com

TYPICAL CHARACTERISTICS (Cont.)

All specification VDD = +5V, fOSC = 2.4576MHz, PGA = 1, fDATA = 15Hz, and VREF ≡ (REF IN+) – (REF IN–) = +2.5V, unless otherwise specified.

50

0

–50

–100

–150

–200

OFFSET vs TEMPERATURE

(Cal at 25

°C)

PGA1

PGA128

PGA64

Temperature (

°C)

–50

–30

10

–10

30

50

70

90

PGA16

1.00010

1.00006

1.00002

0.99998

0.99994

0.99990

0.99986

GAIN vs TEMPERATURE

(Cal at 25

°C)

Temperature (

°C)

–50

–30

10

–10

30

50

70

90

10

8

6

4

2

0

–2

–4

–6

–8

–10

INTEGRAL NONLINEARITY vs INPUT SIGNAL

V

IN (V)

–2.5 –2.0

–1.0 –0.5

–1.5

0

0.5

1.0

1.5

2.0

2.5

–40

°C

+25

°C

+85

°C

260

250

240

230

220

210

200

190

CURRENT vs TEMPERATURE

(Buffer Off)

Temperature (

°C)

–50

–30

10

–10

30

50

70

90

350

300

250

200

150

100

50

0

–50

CURRENT vs VOLTAGE

V

DD (V)

3.0

3.25

3.5

3.75

4.0

4.25

4.5

4.75

5.0

Normal

4.91MHz

Normal

2.45MHz

SLEEP

4.91MHz

SLEEP

2.45MHz

Power Down

300

250

200

150

100

50

0

SUPPLY CURRENT vs SUPPLY

V

DD (V)

3.0

3.5

4.0

4.5

5.0

Normal

4.91MHz

Normal

2.45MHz

SLEEP

2.45MHz

Power Down

SLEEP

4.91MHz