AFE5808ZCF datasheet(44/68 Pages) TI1

Part #	AFE5808ZCF

Description	Fully Integrated, 8-Channel Ultrasound Analog Front End with Passive CW Mixer, 0.75nV/rtHz, 14/12-Bit, 65MSPS, 153mW/CH

PDF	68 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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44 / 68 page

I/Q CLK

Generator

4X/8X Clock

D Q

INV

1X Clock

LNA1

Weight

LNA2~8

In-phase

CLK

Quadrature

CLK

I/V

Summed

In-Phase

Summed

Quadrature

Fin 1X Clock

1X Clock

Phase 0°

Fin 4X Clock

1X Clock

Phase 90°

Quadrature

clocks

LNA1

Weight

LNA2~8

In-phase

CLK

Quadrature

CLK

I/V

Summed

In-Phase

Summed

Quadrature

Syncronized I/Q

CLOCKs

AFE5808

SLOS688C – SEPTEMBER 2010 – REVISED APRIL 2012

www.ti.com

Figure 73. 8 X ƒcw and 4 X ƒcw Block Diagram

Figure 74. 8 x ƒcw and 4 x ƒcw Timing Diagram

1 × ƒcw Mode

The 1x ƒcw mode requires in-phase and quadrature clocks with low phase noise specifications. The

phase

delay resolution is also achieved by weighting the in-phase and quadrature signals as described in the 8 × ƒcw

and 4 × ƒcw modes.

Figure 75. Block Diagram of 1 x ƒcw mode

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AFE5808ZCF Datasheet(PDF) 44 Page - Texas Instruments

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