ADRF6720-27ACPZ-R7 datasheet(37/44 Pages) AD

tên linh kiện	ADRF6720-27ACPZ-R7

Giải thích chi tiết về linh kiện	Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs

PDF	44 Pages

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nhà sản xuất	AD [Analog Devices]

Trang chủ	http://www.analog.com

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ADRF6720-27

Data Sheet

Rev. B | Page 36 of 43

Table 21. Bit Descriptions for CP_CTL

Bits

Bit Name

Settings

Description

Reset

Access

CP_SEL

Charge Pump Reference Current Select.

0x0

Internal Charge Pump.

External Charge Pump.

[13:10]

CP_CSCALE

Charge Pump Coarse Scale Current.

0x3

0001

250 µA.

0011

500 µA.

0111

750 µA.

1111

1000 µA.

[5:0]

CP_BLEED

Charge Pump Bleed.

0x26

000000

0 µA

000001

15.625 µA Sink.

000010

31.25 µA Sink.

000011

46.875 µA Sink.

…

011111

484.375 µA Sink.

100000

0 µA.

100001

15.625 µA Source.

100010

31.25 µA Source.

100011

46.875 µA Source.

…

111111

484.375 µA Source.

Address: 0x21, Reset: 0x000B, Name: PFD_CTL

Table 22. Bit Descriptions for PFD_CTL

Bits

Bit Name

Settings

Description

Reset

Access

[6:4]

REF_MUX_SEL

Reference (REF) Output Mux Select.

0x0

000

LOCK_DET.

001

VPTAT.

010

REFCLK.

011

REFCLK/2.

100

REFCLK × 2.

101

REFCLK/8.

110

REFCLK/4.

PFD_POLARITY

Set PFD Polarity.

0x1

Positive.

Negative.

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