AFE5809ZCF datasheet(35/90 Pages) TI

Part #	AFE5809ZCF

Description	Fully Integrated, 8-Channel Ultrasound Analog Front End with Passive CW Mixer, and Digital I/Q Demodulator, 0.75 nV/rtHz, 14, 12-Bit, 65 MSPS, 158 mW/CH

PDF	90 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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35 / 90 page

AFE5809

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SLOS738C – SEPTEMBER 2012 – REVISED JANUARY 2013

word.

5. Sync Pattern: When 2[15:13]= 001, the normal ADC output is replaced by a fixed 11111110000000 word.

6. Toggle: When 2[15:13]=101, the normal ADC output is alternating between 1's and 0's. The start state of

ADC word can be either 1's or 0's.

7. Custom Pattern: It can be enabled when 2[15:13]= 011;. Users can write the required VALUE into register

bits <CUSTOM PATTERN> which is Register 5[13:0]. Then the device will output VALUE at its outputs,

about 3 to 4 ADC clock cycles after the 24th rising edge of SCLK. So, the time taken to write one value is 24

SCLK clock cycles + 4 ADC clock cycles. To change the customer pattern value, users can repeat writing

not be high. For example, 128 points custom pattern will take approximately 128 x (24 SCLK clock cycles + 4

ADC clock cycles).

NOTE

only one of the above patterns can be active at any given instant.

SYNC_PATTERN: Address: 10[8]

By enabling this bit, all channels' test pattern outputs are synchronized. When 10[8] is set as 1, the ramp

patterns of all 8 channels start simultaneously.

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AFE5809ZCF Datasheet(PDF) 35 Page - Texas Instruments