CS5581 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS5581

±2.5 V / 5 V, 200 kSps, 16-bit, High-throughput ∆Σ ADC

Cirrus Logic 

3/25/08

14:34

CS5581

The following figure depicts the CS5581 part powered from a single 5V analog supply and configured for

unipolar measurement.

0 V to +2.048 V

49.9

150pF

2k

CS3003 / CS3004

4700pF

C0G

AIN

ACOM

+5 V

+4.096

Voltage

Reference

(NOTE 1)

(V+) Buffers On

BUFEN

(V-) Buffers Off

10 µF

VREF+

0.1 µF

VREF-

CS5557811

SMODE

CS

4SCLK

4SDO

RDY

CONV

BP/UP

RST

50

MCLK

TST

+5 V

+3.3 V to 1.8 V

10

0.1 µF

0.1 µF

0.1 µF

X7R

V1+

V2+

V2-

DCR

V1-

VL

0.1 µF

VLR3

VLR2

VLR

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. V1-, V2-, and VLR should be connected to the same

ground plane under the chip.

4. SCLK and SDO may require pull-down resistors in

some applications.

Figure 7. CS5581 Configured for Unipolar Measurement Using a Single 5V Analog Supply

18

DS796PP1

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