AFE030 datasheet(9/58 Pages) TI1

9 / 58 page

AFE030

www.ti.com

SBOS588A

– DECEMBER 2011 – REVISED DECEMBER 2011

ELECTRICAL CHARACTERISTICS: Digital

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

AFE030

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

DIGITAL INPUTS (SCLK, DIN, CS, DAC, SD)

Leakage input current

≤ VIN ≤ DVDD

–1

0.01

μA

VIH

High-level input voltage

0.7

× DVDD

VIL

Low-level input voltage

0.3

× DVDD

SD pin high

> 0.7 × DVDD

AFE030 in shutdown

SD pin low

< 0.3 × DVDD

AFE030 in normal operation

DAC pin high

DAC

> 0.7 × DVDD

SPI access to DAC Registers

SPI access to Command and

DAC pin low

DAC

< 0.3 × DVDD

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

μs

INT pin low (open drain)(1)

INT

< 0.4 V

Indicates an interrupt has occurred

μs

Tx_Flag high (open drain)

Tx_Flag sink current

< 1 μA

Indicates Tx block is not ready

μs

Tx_Flag low (open drain)

Tx_Flag

< 0.4 V

Indicates Tx block is ready

μs

Rx_Flag high (open drain)

Rx_Flag sink current

< 1 μA

Indicates Rx block is not ready

μs

Rx_Flag low (open drain)

Rx_Flag

< 0.4 V

Indicates Rx block is ready

μs

DIGITAL TIMING

Gain select time

0.2

μs

Shutdown mode, enable time

4.0

μs

Shutdown mode, disable time

2.0

μs

Power-on reset (POR)

DVDD ≥ 2 V

μs

power-up time

(1)

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.

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