CS5520-BP datasheet(5/41 Pages) CIRRUS

Part #	CS5520-BP

Description	16BIT/20-BIT BRIDGE TRANSDUCER A/D CONVERTER

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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ANALOG CHARACTERISTICS (continued)

Parameter

Min

Typ

Max

Units

Modulator Differential Voltage Reference

Nominal Output Voltage

-

3.75

-

V

Initial Output Voltage Tolerance

-

±100

-mV

Temperature Coefficient

-

100

-

ppm/

°C

Line Regulation

(4.75V < VA < 5.25V)

-

0.5

-

mV/V

Output Voltage Noise

0.1 to 15 Hz

-

10

-

µVp-p

Output Current Drive:

Source Current

Sink Current

-

20

µA

Power Supplies

DC Power Supply Currents

IA+

IA-

ID+

ID-

-

2.7

-2.7

1.5

-0.6

3.5

-3.5

2.2

-0.8

mA

Power Dissipation:

(Note 7)

Normal Operation

Standby Mode

-

37.5

10

-

mW

µW

Power Supply Rejection:

dc

Positive Supplies

dc

Negative Supplies

-

100

95

-

dB

System Calibration Specifications

Positive Full Scale Calibration Range

(Note 8)

Unipolar Mode

Bipolar Mode

0.8T

-

1.2T

V

Maximum Ratiometric Offset Calibration Range

(Note 8)

Unipolar Mode

Bipolar Mode

-2T

-

+2T

V

Differential Input Voltage Range

(Notes 4, 8, 9, 10)

Unipolar Mode

Bipolar

Voffset + (1.2T)

Voffset

± (1.2T)

V

Notes:

7. All outputs unloaded. All inputs CMOS levels.

8. T=VREF/(Gx25), where T is the full scale span, where VREF is the differential voltage across

VREF+ and VREF- in volts, and G is the gain setting of the second gain block. G can be set

to 1, 2, 4, 8. This sets the overall gain to 25, 50, 100, 200. The gain can then be fine tuned by

using the calibration of the full scale point.

9. When calibrated.

10. Voffset is the offset corrected by the offset calibration routine. Voffset may be as large as 2T.

CS5516, CS5520

DS74F1

5

DS74F2

5

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