DDC232

SBAS331D – AUGUST 2004 – REVISED APRIL 2010

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ELECTRICAL CHARACTERISTICS (continued)

At TA = +25°C, AVDD = +5V, DVDD = +3.0V, VREF = +4.096V, tINT = 333ms for DDC232C or 166ms for

DDC232CK,

Range 7, and continuous mode operation, unless otherwise noted.

DDC232C

DDC232CK

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

PERFORMANCE OVER TEMPERATURE

Offset Drift

±0.5

5

(8)

±0.5

5

(8)

ppm of FSR/°C

Offset Drift Stability

±0.2

2

(8)

±0.2

2

(8)

ppm of FSR/minute

DC Bias Voltage Drift

(9)

±3

±3

mV/°C

Input Bias Current Drift

TA = +25°C to +45°C

0.01

1

(8)

0.01

1

(8)

pA/°C

Range Drift

(10)

25

50

25

50

ppm/°C

Range Drift Match

(11)

±5

±5

ppm/°C

REFERENCE

Voltage

4.000

4.096

4.200

4.000

4.096

4.200

V

Input Current

(12)

Average Value with tINT = 333ms

325

mA

Average Value with tINT = 166.5ms

650

mA

DIGITAL INPUT/OUTPUT

Logic Levels

VIH

0.8 DVDD

DVDD + 0.1

0.8 DVDD

DVDD + 0.1

V

VIL

–0.1

0.2 DVDD

–0.1

0.2 DVDD

V

VOH

IOH = –500mA

DVDD – 0.4

DVDD – 0.4

V

VOL

IOL = 500mA

0.4

0.4

V

Input Current (IIN)

0 < VIN < DVDD

±10

±10

mA

Data Format

(13)

Straight Binary

Straight Binary

POWER-SUPPLY REQUIREMENTS

Analog Power-Supply Voltage (AVDD)

4.75

5.0

5.25

4.9

5.0

5.1

V

Digital Power-Supply Voltage (DVDD)

2.7

3.0

3.6

2.7

3.0

3.6

V

Supply Current

Analog Current

41

60

mA

Digital Current

3.7

8.0

mA

Total Power Dissipation

224

288

290

mW

Per Channel Power Dissipation

7

9

10

mW/Channel

(8)

Ensured by design, not production tested.

(9)

Voltage produced by the DDC232 at its input that is applied to the sensor.

(10) Range drift does not include external reference drift.

(11) Matching between side A and side B of the same input.

(12) Input reference current decreases with increasing tINT (see the Voltage Reference section, page 10).

(13) Data format is Straight Binary with a small offset. The number of bits in the output word is controlled by the Format bit.

4

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