AFE4403 datasheet(76/85 Pages) TI2

Part #	AFE4403

Description	AFE4404 Ultra-Small, Integrated AFE for Wearable, Optical, Heart-Rate Monitoring and Bio-Sensing

PDF	85 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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76 / 85 page

AFE4404

SBAS689D – JUNE 2015 – REVISED DECEMBER 2016

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Product Folder Links: AFE4404

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(1)

The tCHANNEL parameter is specified in the Electrical Characteristics table.

Table 79. Timing Parameters for Power Supply Sequencing, Device Initialization, and Power-Down

Timing

VALUE

Time between RX_SUP and IO_SUP ramping up

Ramp up RX_SUP before or at the same time as IO_SUP. Keep t1 as

small as possible (for example,10 ms).

Time between RX_SUP and TX_SUP ramping up

Keep t2 as small as possible (for example,10 ms).

Time between all supplies stabilizing and start of the RESETZ low-

going pulse

> 10 ms

RESETZ pulse duration for the device to get reset

Between 25 µs and 50 µs

Time between resetting the device and issuing of I2C commands

> 1 ms

Time between I2C commands and the ADC_RDY pulse that

corresponds to valid data

tCHANNEL

(1)

RESETZ pulse duration for the device to enter PWDN (power-down)

mode

> 200 µs

Time from exiting power-down mode and subsequently resetting the

device

> 10 ms

AFE4403 Datasheet(PDF) 76 Page - Texas Instruments