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AFE031 Datasheet(PDF) 8 Page - Texas Instruments |
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AFE031 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 57 page AFE031 SBOS531D – AUGUST 2010 – REVISED MAY 2012 www.ti.com 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. AFE031 PARAMETER CONDITIONS MIN TYP MAX UNIT Digital Inputs (SCLK, DIN, CS, DAC, SD) Leakage input current 0 ≤ VIN ≤ DVDD –1 0.01 1 μA Input logic levels High-level input voltage VIH 0.7 • DVDD V Low-level input voltage VIL 0.3 • DVDD V 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 SPI access to Command and Data DAC pin low DAC < 0.3 • DVDD Registers Digital Outputs (DO, ZC_OUT) VO High-level output voltage IOH = 3 mA DVDD – 0.4 DVDD V H Low-level output voltage VOL IOL = –3 mA GND GND + 0.4 V Digital Outputs (INT, Tx_Flag, Rx_Flag) High-level output current IOH VOH = 3.3 V 1 μA Low-level output voltage VOL IOL = 4 mA 0.4 V Low-level output current IOL VOL = 400 mV 4 mA 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 50 μs (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. 8 Copyright © 2010–2012, Texas Instruments Incorporated Product Folder Link(s): AFE031 |
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