HMC624LP4E【PDF 4/9 页】ATTENUATOR DGTL 6BIT 24QFN

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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

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

HMC624LP4 / 624LP4E

v12.0812

0.5 dB LSB GaAs MMIC 6-BIT

DIGITAL ATTENUATOR, DC - 6 GHz

Serial Control Interface

The HMC624LP4E contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). The serial control interface

is activated when P/S is kept high. The 6-bit serial word must be loaded MSB first. The positive-edge sensitive CLK

and LE requires clean transitions. If mechanical switches are used, sufficient debouncing should be provided. When

LE is high, 6-bit data in the serial input register is transferred to the attenuator. When LE is high CLK is masked to

prevent data transition during output loading.

When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and the input register is loaded with

parallel digital inputs (D0-D5). When LE is high, 6-bit parallel data changes the state of the part per truth table.

For all modes of operations, the state will stay constant while LE is kept low.

IP3 vs. Temperature, Min. Attn State

[3]

+25 C

+85 C

-40 C

FREQUENCY (GHz)

P0.1dB vs. Temperature, Min. Attn State

[3]

+25 C

+85 C

-40 C

FREQUENCY (GHz)

IP3 vs. Temperature, Min. Attn State

[3]

(Low Frequency Detail)

0.1

0.2

0.3

0.4

0.5

+25 C

+85 C

-40 C

FREQUENCY (GHz)

P0.1dB vs. Temperature, Min. Attn State

[3]

(Low Frequency Detail)

0.1

0.2

0.3

0.4

0.5

+25 C

+85 C

-40 C

FREQUENCY (GHz)

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