Ultra-Small, Precision Analog Temperature Sensor Measurement With ADC (Rev. D)Ĭalculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs That means the ADC can detect 65536 separate voltages over the 0-to-2.5-volt input range, or: Each voltage step has a difference of 0.038 mV or 38 V from the nearest-neighbor steps, as shown in Figure 4. View all 13ĪDS111x Ultra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator datasheet (Rev. It has a resolution of: or one part in 65536, or 15.3 parts-per-million. The devices are automatically powered down after one conversion in single-shot mode therefore, power consumption is significantly reduced during idle periods. The Analog to digital converter calculator mentions ADC conversion formula used. The ADS111x operate in either continuous-conversion mode or single-shot mode. This n-bit ADC calculator takes analog input and provides a digital output. Use the digital comparator in the ADS1114 and ADS1115 for under- and overvoltage detection. Hence, in terms of decibels, the dynamic range of the ADC will be. The maximum value is 2N 1 2 N 1 times the LSB value. The minimum value that can be detected is one least significant bit ( LSB ). The ADS1115 features an input multiplexer (MUX) that allows two differential or four single-ended input measurements. For an ADC, the dynamic range is related to the number of bits that are used to digitize the analog signal. The PGA offers input ranges from ☒56 mV to ☖.144 V, allowing precise large- and small-signal measurements. The ADS111x perform conversions at data rates up to 860 samples per second (SPS). These features, along with a wide operating supply range, make the ADS111x well suited for power- and space-constrained, sensor measurement applications. The ADS1114 and ADS1115 also incorporate a programmable gain amplifier (PGA) and a digital comparator. Step 4 Calculate measurement resolution in applied engineering units So, a total of 204 ADC counts can be applied to our 4-20 mA current loop measurement, and recall that our sensor had a measurement range of 0-1000 psi. The ADS111x devices incorporate a low-drift voltage reference and an oscillator. The ADS1113, ADS1114, and ADS1115 devices (ADS111x) are precision, low-power, 16-bit, I 2C-compatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package. Programmable Comparator (ADS1114 and ADS1115). ![]() Four Single-Ended or Two Differential Inputs (ADS1115) 16-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C.I 2C Interface: Four Pin-Selectable Addresses A 6-bit DAC produces an output 0.2 Volt for a digital input 000010, what will be the output for an input 011110 Q.
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