1.42 Figure P1.42 shows the circuit of an N-bit DAC. Each of the N bits of the digital word to be converted controls one of the switches. When the bit is 0, the switch is in the position labeled 0; when the bit is 1, the switch is in the position labeled 1. The analog output is the current iO. Vref is a constant reference voltage.
1.42 Figure P1.42 shows the circuit of an N-bit DAC. Each of the N bits of the digital word to be converted controls one of the switches. When the bit is 0, the switch is in the position labeled 0; when the bit is 1, the switch is in the position labeled 1. The analog output is the current iO. Vref is a constant reference voltage.
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