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ADS6148IRGZR Datasheet(PDF) 9 Page - Texas Instruments |
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ADS6148IRGZR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 69 page DIGITAL CHARACTERISTICS – ADS614x and ADS612x Dn_Dn+1_P Dn_Dn+1_P Dn_Dn+1_M Dn_Dn+1_M GND GND V OCM V OCM Logic0 V = –350mV ODL (1) Logic1 V =350mV ODH (1) T0399-01 ADS6149/ADS6129 ADS6148/ADS6128 www.ti.com ..................................................................................................................................................... SLWS211B – JULY 2008 – REVISED OCTOBER 2008 The DC specifications refer to the condition where the digital outputs are not switching, but are permanently at a valid logic level 0 or 1. AVDD = 3.3 V, DRVDD = 1.8 V ADS6149/ADS6148/ ADS6129/ADS6128 PARAMETER TEST CONDITIONS UNIT MIN TYP MAX DIGITAL INPUTS – RESET, SCLK, SDATA, SEN(1) High-level input voltage 1.3 V All digital inputs support 1.8V and 3.3V CMOS logic levels Low-level input voltage 0.4 V SDATA, SCLK(2) VHIGH = 3.3V 16 High-level input current µA SEN(3) VHIGH = 3.3V 10 SDATA, SCLK VLOW = 0V 0 Low-level input current µA SEN VLOW = 0V –20 Input capacitance 4 pF DIGITAL OUTPUTS – CMOS INTERFACE (Pins D0 to D13 and OVR_SDOUT) High-level output voltage DRVDD V Low-level output voltage 0 V Output capacitance (internal to device) 2 pF DIGITAL OUTPUTS – LVDS INTERFACE (Pins D0_D1_P/M to D12_D13_P/M)(4) VODH, High-level output voltage (5) 275 350 425 mV VODL, Low-level output voltage (5) –425 –350 –275 mV VOCM, Output common-mode voltage 1 1.2 1.3 V Capacitance inside the device, from either output to Output capacitance 2 pF ground (1) SCLK, SDATA, SEN function as digital input pins in serial configuration mode. (2) SDATA, SCLK have internal 200 k Ω pull-down resistor (3) SEN has internal 100 k Ω pull-up resistor to AVDD. Since the pull-up is weak, SEN can also be driven by 1.8V or 3.3V CMOS buffers. (4) OVR_SDOUT has CMOS output logic levels, determined by DRVDD voltage. (5) With external 100 Ω termination Figure 1. LVDS Voltage Levels Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): ADS6149/ADS6129 ADS6148/ADS6128 |
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