XWM2152CDT/V 查看數據表（PDF） - Wolfson Microelectronics plc

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XWM2152CDT/V

12-bit, 30MSPS ADC

Wolfson Microelectronics plc 

WM2152

APPLICATIONS INFORMATION

RECOMMENDED EXTERNAL COMPONENTS

DVDD

C1

DGND

Analog

input

signal

20 DVDD

AVDD

27 AVDD2

C2

8 AVDD1

C3

AGND

5 VINP

6 VINM

DGND 19

AGND1 7

AGND2 1

DGND

AGND

VRT 9

VRB 10

C4 C5

C7

C6

Clock

Mode

Control

Interface

Control

OVRNG 11

WM2152

28 CLK

2 CON1

3 CON0

4 EXTREF

26 OEB

D11 12

D10 13

D9 14

D8 15

D7 16

D6 17

D5 18

D4 21

D3 22

D2 23

D1 24

D0 25

NOTES: 1. C1-7 should be fitted as close to WM2152 as possible.

2. AGND and DGND should be connected as close to WM2152 as possible.

AGND

DVDD

Output

Data

Bus

+ C8

DGND

Product Preview

AVDD

+ C9

AGND

Figure 7 External Components Diagram

COMPONENT

REFERENCE

C1

C2

C3

C4

C5

C6

C7

C8

C9

SUGGESTED

VALUE

100nF

100nF

100nF

100nF

10µF

100nF

100nF

10µF

10µF

DESCRIPTION

De-coupling for DVDD.

De-coupling for AVDD2.

De-coupling for AVDD1.

High frequency de-coupling between VRT and VRB.

Low frequency de-coupling between VRT and VRB (non-polarised).

De-coupling for VRT.

De-coupling for VRB.

Reservoir capacitor for DVDD.

Reservoir capacitor for AVDD.

Table 1 External Components Descriptions

PP Rev 1.2 August 2001

10

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