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ADC10DL065 Datasheet(PDF) 4 Page - Texas Instruments |
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ADC10DL065 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 34 page VA VA VA VA AGND AGND VA AGND VFloat VA AGND VA AGND ADC10DL065 SNAS314B – JUNE 2006 – REVISED APRIL 2013 www.ti.com Pin Descriptions and Equivalent Circuits Pin No. Symbol Equivalent Circuit Description ANALOG I/O 15 VINA+ 2 VINB+ Differential analog input pins. With a 1.0V reference voltage the differential full-scale input signal level is 2.0 VP-P with each input pin voltage centered on a common mode voltage, VCM. The negative 16 VINA− input pins may be connected to VCM for single-ended operation, but 1 VINB− a differential input signal is required for best performance. This pin is the reference select pin and the external reference input. If (VA - 0.3V) < VREF < VA, the internal 1.0V reference is selected. If AGND < VREF < (AGND + 0.3V), the internal 0.5V reference is 7 VREF selected. If a voltage in the range of 0.8V to 1.2V is applied to this pin, that voltage is used as the reference. VREF should be bypassed to AGND with a 0.1 µF capacitor when an external reference is used. This is a four-state pin. DF/DCS = VA, output data format is offset binary with duty cycle stabilization applied to the input clock DF/DCS = AGND, output data format is 2's complement, with duty 21 DF/DCS cycle stabilization applied to the input clock. DF/DCS = VRMA or VRMB , output data is 2's complement without duty cycle stabilization applied to the input clock DF/DCS = "float", output data is offset binary without duty cycle stabilization applied to the input clock. 13 VRPA 5 VRPB 14 VRMA 4 VRMB These pins are high impedance reference bypass pins. All these pins should each be bypassed to ground with a 0.1 µF capacitor. A 10 µF capacitor should be placed between the VRPA and VRNA pins and between the VRPB and VRNB pins. VRMA and VRMB may be loaded to 1mA for use as a temperature 12 VRNA stable 1.5V reference. The remaining pins should not be loaded. 6 VRNB 4 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: ADC10DL065 |
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