AD7655ACP 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

生产厂家

AD7655ACP

Low Cost, 4-Channel, 16-Bit 1 MSPS PulSAR® ADC

Analog Devices 

ANALOG

SUPPLY

(5V)

+ 10μF

100nF

30Ω

NOTE 6

+ 10μF

DVDD

100nF

AD7655

100nF + 10μF

DIGITAL SUPPLY

(3.3V OR 5V)

AD780

2.5V REF

NOTE 1

1MΩ

100nF

50kΩ + CREF 1μF

NOTE 2

NOTE 3

50Ω

AVDD AGND

REF

REF A

REF B

NOTE 1

REFGND

-

NOTE 4 U1

ANALOG INPUT A1

+

CC

10Ω

2.7nF

NOTE 5

INA1

50Ω

-

NOTE 4 U2

ANALOG INPUT A2

+

CC

10Ω

2.7nF

NOTE 5

50Ω

-

NOTE 4 U3

ANALOG INPUT B1

+

CC

10Ω

2.7nF

NOTE 5

INA2

INAN

INB1

DGND DVDD OVDD

OGND

SCLK

SDOUT

BUSY

CNVST

AD7655

A0

SER/PAR

A/B

CS

RD

BYTESWAP

RESET

PD

SERIAL PORT

50Ω

D

NOTE 7

DVDD

μC/μP/

DSP

CLOCK

50Ω

-

NOTE 4 U4

ANALOG INPUT B2

+

CC

10Ω

2.7nF

NOTE 5

INB2

INBN

NOTES

1. SEE VOLTAGE REFERENCE INPUT SECTION.

2. WITH THE RECOMMENDED VOLTAGE REFERENCES, CREF IS 47μF. SEE VOLTAGE REFERENCE INPUT SECTION.

3. OPTIONAL CIRCUITRY FOR HARDWARE GAIN CALIBRATION.

4. THE AD8021 IS RECOMMENDED. SEE DRIVER AMPLIFIER CHOICE SECTION.

5. SEE ANALOG INPUTS SECTION.

6. OPTIONAL, SEE POWER SUPPLY SECTION.

7. OPTIONAL LOW JITTER CNVST. SEE CONVERSION CONTROL SECTION.

Figure 17. Typical Connection Diagram (Serial Interface)

Rev. B | Page 15 of 28

Share Link: