Datasheet

AFE030
www.ti.com SBOS588A –DECEMBER 2011– REVISED DECEMBER 2011
ELECTRICAL CHARACTERISTICS: Digital
At T
J
= +25°C, PA_V
S
= 16 V, V
AVDD
= V
DVDD
= 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 0 ≤ V
IN
≤ DV
DD
–1 0.01 1 μA
V
IH
High-level input voltage 0.7 × DV
DD
V
V
IL
Low-level input voltage 0.3 × DV
DD
V
SD pin high SD > 0.7 × DV
DD
AFE030 in shutdown
SD pin low SD < 0.3 × DV
DD
AFE030 in normal operation
DAC pin high DAC > 0.7 × DV
DD
SPI access to DAC Registers
SPI access to Command and
DAC pin low DAC < 0.3 × DV
DD
Data Registers
DIGITAL OUTPUTS (DO, ZC_OUT)
V
OH
High-level output voltage I
OH
= 3 mA DV
DD
– 0.4 DV
DD
V
V
OL
Low-level output voltage I
OL
= –3 mA GND GND + 0.4 V
DIGITAL OUTPUTS (INT, Tx_Flag, Rx_Flag)
I
OH
High-level output current V
OH
= 3.3 V 1 μA
V
OL
Low-level output voltage I
OL
= 4 mA 0.4 V
I
OL
Low-level output current V
OL
= 400 mV 4 mA
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)
DV
DD
≥ 2 V 50 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.
Copyright © 2011, Texas Instruments Incorporated 9
Product Folder Link(s): AFE030