AD7621 datasheet(15/28 Pages) AD

tên linh kiện	AD7621

Giải thích chi tiết về linh kiện	16-Bit, 500 kSPS PulSAR Dual, 2-Channel, Simultaneous Sampling ADC

PDF	28 Pages

Scroll/Zoom	100%

nhà sản xuất	AD [Analog Devices]

Trang chủ	http://www.analog.com

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15 / 28 page

AD7654

Rev. B | Page 15 of 28

AVDD

AGND

DGND

DVDD OVDD

OGND

SER/PAR

CNVST

BUSY

SDOUT

SCLK

RESET

REFGND

CREF

2.5V REF

NOTE 1

REF

REF A

REF B

30Ω

CLOCK

AD7654

µC/µP/

DSP

SERIAL PORT

DIGITAL SUPPLY

(3.3V OR 5V)

ANALOG

SUPPLY

(5V)

DVDD

A/B

NOTE 7

BYTESWAP

DVDD

50kΩ

100nF

1MΩ

INA1

2.7nF

NOTE 4

NOTE 5

50Ω

10Ω

2.7nF

NOTE 4

NOTE 5

50Ω

10Ω

INAN

INA2

NOTE 2

NOTE 3

NOTE 6

AD780

10µF

100nF

10µF

50Ω

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.

INB1

2.7nF

NOTE 4

NOTE 5

50Ω

10Ω

INBN

2.7nF

NOTE 4

NOTE 5

50Ω

10Ω

INB2

ANALOG INPUT A1

ANALOG INPUT A2

ANALOG INPUT B1

ANALOG INPUT B2

10µF

1µF

NOTE 1

–

Figure 18. Typical Connection Diagram (Serial Interface)

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