HMC1197LP7FE datasheet(49/57 Pages) AD

49 / 57 page

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Phone: 978-250-3343

Fax: 978-250-3373

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Application Support: Phone: 978-250-3343 or apps@hittite.com

HMC1197LP7FE

v03.0314

Wideband direct Quadrature Modulator

w/ Fractional-n Pll & Vco, 100 - 4000 MHz

2.26

reg 1ah Seed register default b29d0bh

BIT

TYPE

NAME

Width

Default

DESCRIPTION

[23:0]

R/W

Delta Sigma Modulator

Seed

11705611d

B29D0Bh

Used to program output phase relative to the reference frequency.

(Exact Frequency Mode required). When not using Exact Frequency

Mode and Auto seed Enable Reg06h[8] =1, Reg1Ah sets the start

phase of output signal. If AutoSeed disable Reg06h[8] =0, Reg1Ah

is the start phase of the signal after every frequency changel. (LO

Phase = 2π x Reg1Ah/(224)

2.27

reg 21h Programmable Harmonic lPF register

chip id = 6h, regaddress = 01h, (reg01h) (Write only)[1]

BIT

TYPE

NAME

DEFLT

DESCRIPTION

[15:0]

Harmonic LPF Band select

15d

Low Pass Filter 3 dB bandwidth setting on the output of LO pins

(LO_N & LO_P pins)

0: 970 MHz

1: 1000 MHz

2: 1030 MHz

3: 1055 MHzl

4: 1085 MHz

5: 1120 MHz

6: 1155 MHz

7: 1195 MHz

8: 2335 MHz

9: 2430 MHz

10: 2530 MHz

11: 2655 MHz

12: 2770 MHz

13: 2940 MHz

14: 3145 MHz

15: 3400 MHz

[23:16]

Reserved

A write of C1h is required every time bandwidth setting in

Reg 21h [15:0] is changed.

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rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

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