Cirrus-logic AN31 Manual de usuario descargar pdf (Pagina 9)

301

4.096 MHz

10

1

VA+ MDRV+

MDRV-

VD+

BX2

XIN

XOUT

0.1 0.1

+5

-

VREF-

VREF+

R1

R3

R2

7.5k

5k

7.5k

VA- VD-

10

-5

0.1

0.1

+

301

4.7 nF

4.7 nF

DGND

AIN+

AGND1 AGND2

AIN-

SMODE

SOD

SID

SCLK

DRDY

CS

RST

Bridge

Sync

+

_

1X

+

_

25X

Serial

Interface

4-bit D/A

Converter

Gain

Block

1,2,4,8

Σ

IN1 OUT1

IN2 OUT2

2-Channel

Delta-Sigma

Modulator

2

Channel

FIR

Filter

_

.

.

Calibration

BX1

CS5516

470pF

470pF

+5

-5

CS5520

16 or 20 bits

50 Conversions/sec before averaging

POST

PROCESSOR

(See Text)

Figure 8. CS5516/CS5520 Using dc Bridge Excitation.

Bridge Transducer Digitizer Circuits

AN31REV3 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 27 28

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