AD790JN datasheet, price, pdf

AD790JN Pinout Equivalent Circuit

1：Overview of the AD790JN：

The AD790JN is a fast (45 nanoseconds), high-precision voltage comparator that is easy to use. It features a low static current design and can be powered by a single 5V supply or a dual ±15V supply. The typical input offset voltage of the AD790JN is 1 mV, ensuring high precision in comparison. The AD790JN comes in an 8-pin SOIC (JN) package, which is compact and suitable for high-density PCB designs. When optimizing layout, it is advisable to minimize the length of high-speed signal paths to reduce the impact of parasitic capacitance.

2：AD790JN Important pin function definition:

3：AD790JN Circuit applications for examples

The diagram below shows an overvoltage detection window comparator designed using the AD790JN. The circuit employs two AD790JN chips, with a simple peripheral circuit that features a wide differential input range, suitable for monitoring large signals. As shown in the diagram, the input signal for the overvoltage detection circuit is directly connected to the high-impedance input of the comparator, eliminating the need for special clamp diodes to limit the differential input voltage at the input terminals.

4：Alternative model recommendation

The alternative products of AD790JN should be replaced by chips of the same brand series as far as possible, so that the original circuit can be replaced without changing. Other brands can be selected if there is no substitute for the same series. But most packages are different and require circuit changes.
AD790SQ：

The AD790SQ is designed for extreme environments (e.g. aerospace, military systems) and operates stably from -55°C to +125°C. The AD790SQ is a ceramic package (CERDIP) with excellent moisture resistance and radiation resistance. AD790SQ can be used in satellite power monitoring, gyroscope signal conditioning, temperature sensor interface.

LM311P：

The LM311P uses single power supply (5V – 36V) or dual power supply (±5V – ±18V) to adapt to various power supply scenarios. With an input bias current of only 0.1 µA, the LM311 is suitable for the high impedance sensor P-DIP-8 (plastic dual-in-line package), through hole mounting.

AD8561ANZ：

AD8561ANZ Is a low power consumption, high speed, high precision comparator, suitable for volume and power consumption sensitive applications (such as portable devices, industrial sensors). His operating temperature range is from-40 C to + 85 C (industrial grade).