AD7949 데이터 시트보기 (PDF) - Analog Devices

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AD7949

14-Bit, 8-Channel, 250 kSPS PulSAR ADC

Analog Devices 

AD7949

TYPICAL CONNECTION DIAGRAMS

5V 1.8V TO VDD

10µF2

100nF

100nF

100nF

V+

0V TO VREF

ADA4841-x 3

V–

V+

0V TO VREF

ADA4841-x 3

V–

0V OR

VREF/2

REF

IN0

REFIN VDD

IN[7:1]

AD7949

VIO

DIN

SCK

SDO

CNV

COM

GND

MOSI

SCK

MISO

SS

NOTES

1. INTERNAL REFERENCE SHOWN. SEE VOLTAGE REFERENCE OUTPUT/INPUT SECTION FOR

REFERENCE SELECTION.

2. CREF IS USUALLY A 10µF CERAMIC CAPACITOR (X5R).

3. SEE THE DRIVER AMPLIFIER CHOICE SECTION FOR ADDITIONAL RECOMMENDED AMPLIFIERS.

4. SEE THE DIGITAL INTERFACE SECTION FOR CONFIGURING AND READING CONVERSION DATA.

Figure 25. Typical Application Diagram with Multiple Supplies

+5V

1.8V TO VDD

10µF2

100nF

100nF

V+

ADA4841-x 3

V–

REF

IN0

REFIN VDD

100nF

VIO

V+

ADA4841-x 3

V–

IN[7:1]

AD7949

DIN

SCK

SDO

CNV

MOSI

SCK

MISO

SS

VREF p-p

VREF/2

COM

GND

NOTES

1. INTERNAL REFERENCE SHOWN. SEE VOLTAGE REFERENCE OUTPUT/INPUT SECTION FOR

REFERENCE SELECTION.

2. CREF IS USUALLY A 10µF CERAMIC CAPACITOR (X5R).

3. SEE THE DRIVER AMPLIFIER CHOICE SECTION FOR ADDITIONAL RECOMMENDED AMPLIFIERS.

4. SEE THE DIGITAL INTERFACE SECTION FOR CONFIGURING AND READING CONVERSION DATA.

Figure 26. Typical Application Diagram Using Bipolar Input

Data Sheet

Rev. F | Page 16 of 32

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