ADS1203IRGTT datasheet(10/33 Pages) TI1

Part #	ADS1203IRGTT

Description	Motor control, current measurement

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Manufacturer	TI1 [Texas Instruments]

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10 / 33 page

ADS1203

SBAS318C − JUNE 2004 − REVISED JANUARY 2008

www.ti.com

10

TYPICAL CHARACTERISTICS (continued)

AVDD = BVDD = +5V or VDD = +5V, VIN+ = −250mV to +250mV, VIN− = 0V, MCLK input = 20MHz, and 16-bit Sinc3 filter, with OSR = 256, unless

otherwise noted.

GAIN vs TEMPERATURE

−40

−20

20

040

80

60

100

Temperature (

_C)

0.10

0

−0.10

−0.20

−0.30

−0.40

−0.50

Mode 3 (MCLK = 32MHz)

Mode3(MCLK = 20MHz)

Mode 0

RMS NOISE vs INPUT VOLTAGE LEVEL

−320 −240

−80

−160

0

240

160

80

320

Differential Input Voltage (mV)

14

12

10

8

6

4

2

0

SIGNAL−TO−NOISE RATIO vs TEMPERATURE

−40

−20

20

040

80

60

100

Temperature (

_C)

85.6

85.4

85.2

85.0

84.8

84.6

84.4

84.2

Mode 3 (MCLK = 32MHz)

Mode 3 (MCLK = 20MHz)

Mode 0

SIGNAL−TO−NOISE + DISTORTION

vs TEMPERATURE

−40

−20

20

040

80

60

100

Temperature (

_C)

85.2

84.8

84.4

84.0

83.6

83.2

82.8

82.4

82.0

81.6

81.2

80.8

Mode 3 (MCLK = 32MHz)

Mode 3 (MCLK = 20MHz)

Mode 0

EFFECTIVE NUMBER OF BITS

vs DECIMATION RATIO

10

100

1k

10k

Decimation Ratio (OSR)

18

16

14

12

10

8

6

4

110

98

86

74

62

50

38

26

Sinc3 Filter

Sinc2 Filter

POWER−SUPPLY CURRENT vs TEMPERATURE

−40

−20

20

040

80

60

100

Temperature (

_C)

10

9

8

7

6

5

Mode 0

Mode 3 (MCLK = 20MHz)

Mode 3 (MCLK = 32MHz)

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