Multiplying-converter
Where N is the binary number from 0 to 15 formed by the digital input. If the analog input is a fixed de reference, the circuit is a conventional 4-bit D to ac...
9-Bit-cmos-converter
Three CD4007 A IC packages perform the switch function using a 10-V logic level. A single 15-V supply provides a positive bus for the follower amplifier and fe...
12-Bit-da-conversion-system
The front end of the DAC is configured differentially using dual eight-input IC multiplexer 1H6216 and three LM156 op amps. Following the differential amplifie...
Digital-to-analog-converters
The following applications circuits are intended to illustrate the following points: A 2-KO resistor should be in series with V + to limit supply current with ...
Digital-frequency-detector
A simple inventer and NAND gate can be connected to yield a highly compact and reliable digital frequency detector. This circuit can detect frequencies up to 3...
Frequency-boundary-detector
The circuit can be used to tell whether or not an input signal is within a certain frequency range. The device consists of three !Cs, a dual monostable multivi...
Schmitt-trigger
This circuit has a 100-m V hysteresis which can be used in applications where very fast transition times are required at the output, even though the signal i...
Xor-gate-up-down-counter
One can transform an ordinary binary counter, such as a 7493, into an up/down counter with mode control by adding XOR gates 7486 to the counter"s outputs. Th...
Spare-flip-flop-inverter
The circuit uses one-half of a dual D flip-flop as an inverter. When the input decreases, the flip-flop resets, and its Q output increases. When the input incre...
Multiple-input-detector
This circuit determines whether more than one input in a group of digital inputs is active. It provides a digital measure of the number of active inputs, and it...
Digitally-programmable-attenuator
The first stage is a simple buffer used to isolate the signal source from the attenuator stages to follow. Each of the subsequent stages is preceded by a volta...
Adc
Conversion speed of this design is the sum of the delay through the comparator and the decoding gates. Reference voltages for each bit are developed from a pre...
Switched-capacitor-adc
The CMOS comparator in the successive-approximation system determines each bit by examining tbe charge on a series of binary-weighted capacitors. In tbe first ...
Tone dial sequence decoder
The circuit takes active low inputs from a Touch Tone decoder and reacts to a proper sequence of digits...
Differential analog switch
The NPD5566 monolithic dual is used in a differential multiplex application where Rds(ON> should be closely matched) for the monolithic dual tracks at better th...
DTL-TTL controlled buffered analog switch
This analog switch uses the 2N4860 JFET for its 25 ohm ron and low leakage. The LM102 serves as a voltage buffer. This circuit can be adapted to a dual trace os...
Jfet sample and hold
The logic voltage is applied simultaneously to the sample and hold JFETs...
Cmos line receiver
The trip point is set half way between the supplies by Rl and R2; R3 provides over 200 mV of hysteresis to increase noise immunity. Maximum frequency of operati...
Ttl logic tester
Gates Gl and G2 together with resistors Rl and R2 form a simple voltage monitor that has a trip point of 1 volts. Gate G3 is simply an inverter. The display sec...
Simple logic probe
If the probe is connected to logic 0, Ql will be turned on lighting Dl. At logic 1, Q2 will be turned on lighting D2. For Ql and Q2 any NPN or PNP transistors w...