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ADC16061 Fiches technique(PDF) 3 Page - National Semiconductor (TI) |
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ADC16061 Fiches technique(HTML) 3 Page - National Semiconductor (TI) |
3 / 20 page Pin Descriptions and Equivalent Circuits Pin No. Symbol Equivalent Circuit Description Analog I/O 1V IN+ Non-Inverting analog signal Input. With a 2.0V reference voltage and a 2.0V common mode voltage, V CM, the input signal voltage range is from 1.0 volt to 3.0 Volts. 4V IN− Inverting analog signal Input. With a 2.0V reference voltage and a 2.0V common mode voltage, V CM, the input signal voltage range is from 1.0 Volt to 3.0 Volts. The input signal should be balanced for best performance. 48 V REF+ IN Positive reference input. This pin should be bypassed to AGND with a 0.1 µF monolithic capacitor. V REF+ minus VREF− IN should be a minimum of 1.8V and a maximum of 2.2V. The full-scale input voltage is equal to V REF+ IN minus V REF− IN. 47 V REF− IN Negative reference input. In most applications this pin should be connected to AGND and the full reference voltage applied to V REF+ IN. If the application requires that VREF−IN be offset from AGND, this pin should be bypassed to AGND with a 0.1 µF monolithic capacitor. V REF+ IN minus VREF− IN should be a minimum of 1.8V and a maximum of 2.2V. The full-scale input voltage is equal to V REF+ IN minus VREF− IN . 50 V REF+ OUT Output of the high impedance positive reference buffer. With a 2.0V reference input, and with a V CM of 2.0V, this pin will have a 3.0V output voltage. This pin should be bypassed to AGND with a 0.1 µF monolithic capacitor in parallel with a 10 µF capacitor. 49 V REF− OUT The output of the negative reference buffer. With a 2.0V reference andaV CM of 2.0V, this pin will have a 1.0V output voltage. This pin should be bypassed to AGND with a 0.1 µF monolithic capacitor in parallel with a 10 µF capacitor. 52 V REF (MID) Output of the reference mid-point, nominally equal to 0.4 V A (2.0V). This pin should be bypassed to AGND with a 0.1 µF monolithic capacitor. This voltage is derived from V CM. 51 V CM Input to the common mode buffer, nominally equal to 40% of the supply voltage (2.0V). This pin should be bypassed to AGND with a 0.1 µF monolithic capacitor. Best performance is obtained if this pin is driven with a low impedance source of 2.0V. www.national.com 3 |
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Description similaire - ADC16061 |
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