CS5566 データシートの表示（PDF） - Cirrus Logic

部品番号

コンポーネント説明

メーカー

CS5566

±2.5 V / 5 V, 5 kSps, 24-bit ΔΣ ADC

Cirrus Logic 

5/4/09

CS5566

3.7 Typical Connection Diagrams

The following figure depicts the CS5566 powered from bipolar analog supplies, +2.5 V and - 2.5 V.

R1

C1

R1

C1

49.9

47pF

4.99k

4.99k

49.9

+2.048 V

0V

-2.048 V

+2.048 V

0V

-2.048 V

47pF

4.99k

4.99k

4700pF

C0G

AIN+

4700pF

C0G

AIN-

CS5566

SMODE

CS

5SCLK

5SDO

RDY

+2.5 V

+4.096

Voltage

Reference

(NOTE 1)

-2.5 V

(V+) Buffers On

BUFEN

(V-) Buffers Off

VREF+

10 µF

0.1 µF

VREF-

CONV

BP/UP

SLEEP

RST

50

MCLK

TST

+2.5 V

+3.3 V to +1.8 V

47 µF

10

0.1 µF

0.1 µF

10

0.1 µF

X7R

V1+

V2+

V2-

DCR

VL

0.1 µF

VLR2

V1-

VLR

-2.5 V

NOTES

1. See Section 3.3 Voltage Reference for information on required

voltage reference performance criteria.

2.Locate capacitors so as to minimize loop length.

3. The ±2.5 V supplies should also be bypassed to ground at the converter.

4. VLR and the power supply ground for the ±2.5 V should be

connected to the same ground plane under the chip.

5. SCLK and SDO may require pull-down resistors in some applications.

6. An RC input filter can be used to band limit the input to reduce noise.

Select R to be equal to the parallel combination of the feedback of the

feedback resistors 4.99k || 4.99k = 2.5k0 0

Figure 8. CS5566 Configured Using ±2.5V Analog Supplies

18

DS806PP2

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