What is a digital signal generator

Digital signal generator (Digital Signal Processor) is an instrument that converts analog signals into digital signals. It consists of three parts: input, output and power supply.

Digital signal generator is a commonly used instrument in electronic engineering. Its main function is to convert the input analog voltage or current into the corresponding digital level for various measurements and operations.

In electronic engineering, it is often used to test parameters such as voltage and current in circuits and to calculate the DC gain of amplifiers.

1. Working principle:

When there is voltage in the circuit under test, a voltage dividing circuit is formed through resistors R1 and R2; when there is current in the circuit under test, a shunt circuit is formed through resistors R3 and R4; when there is no voltage in the circuit under test, there is no The pressure dividing circuit also does not have a shunt circuit.

2. Classification:

According to different classification methods, it can be divided into:

(1) According to use, it can be divided into three types: general type, precision type and high-precision type; among which, high-precision type is divided into two types: ordinary type and ultra-precision type. Generally, the frequency range of the general-purpose type is in the range of 20 ~ KHz, while the frequency range of the precision type can be as wide as below 10KHz; the resolution of the ordinary type is above 0.1μV/Ω, and the ultra-precision type can reach above 0.0001μV/Ω (i.e. 0.001 mW).

(2) According to the working mode, it is divided into two types: single-ended output and double-ended output; among them, the double-ended output models include four models: TL495, TL496, TL497, TL599, and TL600 (their codes are A3, B3, and C4 respectively , D4), single-ended models include TL479 and TL480 integrated circuit chips (IC for short).

(3) According to the output characteristics, it is divided into two types: sinusoidal waveform output and non-sinusoidal waveform output: the former includes two product specifications: standard type and expansion module; the latter includes two types of product specifications: standard type and high-precision non-standard product specifications. (Note: The above products can be equipped with different types of sensors.)

(4) According to the type of power supply, it can be divided into two categories: AC power supply mode and DC power supply mode.

(5) According to the different devices used, it can be divided into two categories: integrated and external.

(6) According to different use occasions, it can be divided into two categories: industrial control and control measurement.

(7) According to the convenience of use, it can also be divided into two categories: desktop and portable, etc.