AFE031 datasheet(13/59 Pages) TI2

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AFE031

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SBOS531E – AUGUST 2010 – REVISED JUNE 2019

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When an interrupt is detected (INT pin low), the contents of the I_Flag and T_Flag Registers can be read to determine the reason for the

interrupt.

8.7

Electrical Characteristics: Digital

At TJ = 25°C, PA_VS = 16 V, VAVDD = VDVDD = 3.3 V, and 10 kΩ connected to PA_ISET (pin 46), unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Digital Inputs (SCLK, DIN, CS, DAC, SD)

Leakage input current

≤ VIN ≤ DVDD

–1

0.01

μA

Input logic levels

VIH

High-level input voltage

0.7 • DVDD

VIL

Low-level input voltage

0.3 • DVDD

SD pin high

SD > 0.7 • DVDD

AFE031 in shutdown

SD pin low

SD < 0.3 • DVDD

AFE031 in normal operation

DAC pin high

DAC > 0.7 • DVDD

SPI access to DAC Register

DAC pin low

DAC < 0.3 • DVDD

SPI access to Command and Data

Registers

Digital Outputs (DO, ZC_OUT)

VOH

High-level output voltage

IOH = 3 mA

DVDD – 0.4

DVDD

VOL

Low-level output voltage

IOL = –3 mA

GND

GND + 0.4

Digital Outputs (INT, Tx_Flag, Rx_Flag)

IOH

High-level output current

VOH = 3.3 V

μA

VOL

Low-level output voltage

IOL = 4 mA

0.4

IOL

Low-level output current

VOL = 400 mV

INT pin high (open drain)

INT sink current < 1 μA

Normal operation

INT pin low (open drain)(1)

INT < 0.4 V

Indicates an interrupt has occurred

Tx_Flag high (open drain)

Tx_Flag sink current < 1 μA

Indicates Tx block is ready

Tx_Flag low (open drain)

Tx_Flag < 0.4 V

Indicates Tx block is not ready

Rx_Flag high (open drain)

Rx_Flag sink current < 1 μA

Indicates Rx block is ready

Rx_Flag low (open drain)

Rx_Flag < 0.4 V

Indicates Rx block is not ready

DIGITAL TIMING

Gain Timing

Gain select time

0.2

μs

Shutdown Mode Timing

Enable time

4.0

μs

Disable time

2.0

μs

POR Timing

Power-On Reset power-up

time

DVDD ≥ 2 V

μs

AFE031 Datasheet(PDF) 13 Page - Texas Instruments

AFE031 Datasheet(HTML) 13 Page - Texas Instruments

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