The level detector is a device similar to a voltage comparator. From this, you can infer that the clock speed is 2000 counts/300 ms = 6667 Hz (not the 2000 Hz that you seem to be assuming). The op-amp circuit of figure 2 below was chosen for simplicity. In one direction of ramping, the integrator is driven by the positive analog input signal (producing a … Dual-Slope ADC Architecture A dual-slope ADC (DS-ADC) integrates an unknown input voltage (VIN) for a fixed amount of time (TINT), then "de-integrates" (TDEINT) using a known reference voltage (VREF) for a variable amount of time (see Figure 2). Figure 2. In the dual-slope converter, an integrator circuit is driven positive and negative in alternating cycles to ramp down and then up, rather than being reset to 0 volts at the end of every cycle. A dual-slope integrator is provided in the usual manner with input switches for a measured voltage and reference voltage and with a first counter having a count capacitor N 1, in addition to the usual integrating resistor and integrator condenser in circuit with an integrating amplifier.The output of the latter is applied to a comparator and a clock-pulse generator produces the counting pulses. "An integrating ADC (also dual-slope or multi-slope ADC) applies the unknown input voltage to the input of an integrator and allows the voltage to ramp for a fixed time period (the run-up period). As a minimum, each device contains the integrator, zero crossing comparator and proc essor interface logic. black: dual-slope integration. Although this circuit could appear at the front of a delta-sigma … Discrete Voltage Comparison A/D converter MCQs. It consists of five blocks, an op-amp used as an integrator, a zero comparator, clock pulse generator, a set of decimal counters and a … The integration time and the clock rate of the counter are related such that a full-scale input (1.999V) gives 1999 counts. Dual Slope Digital Voltmeter ... Then the output signal of integrator experiences a negative slope, which is constant and proportional to the magnitude of the input voltage. In the dual-slope converter, an integrator circuit is driven positive and negative in alternating cycles to ramp down and then up, rather than being reset to 0 volts at the end of every cycle. The equivalent weight of LSB in a four-bit variable resistive divider D/A converter is. The block diagram of dual slope integrating type DVM is shown in the Fig. The TC500 is the base (16-bit max) device and requires both positive and negative power supplies. An op-amp employed as an integrator. The major blocks of a dual slope integrating type DVM are . Voltage to Frequency A/D converter MCQs. ends that implement dual slope A/D converters having a maximum resolution of 17 bits plus sign. The output voltage from integrator (E o) is compared with the fixed voltage of an internal reference source, and, when E o reaches that level, the detector produces an output pulse. Counter Type or Pulse Width Type A/D Converter MCQs. the dual-slope converter. Hence the name given to the technique is dual slope integration technique. Dual Slope Integrator A/D Converter MCQs. Circuit and Calculations To get a basis to use this integrator it is necessary to calculate an analysis of the circuit. Dual-slope integration. 1. Of dual slope A/D converters having a maximum resolution of 17 bits sign. A four-bit variable resistive divider D/A Converter is both positive and negative supplies. Similar to a voltage comparator of the counter are related such that a full-scale input ( 1.999V ) gives counts! 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