Description

M62301 semiconductor integrated circuit forms an integrating A/D converter, being connected to a microcomputer unit. By using selection signals and counter clock signals from the unit, a 10 to 12-bit A/D converter can be created at a low cost.

The integration time and resolution can be set at the users option by changing external parameters. In addition, the built-in circuit offset, delay time and temperature fluctuation are adjustable, enabling a wide range of applications. M62301 has a 3 input decoder circuit, high-precision reference voltage (1.22 V) generator, current supply and comparator for integration, and voltage-monitoring reset circuit for a 5 V power supply. It is also equipped with girdling to prevent current leak from integration capacitor.

Features

• Separate power supplies for analog section and digital section.

• Low power dissipation: 2 mA (Typ)

   (1 mA for A/D conversion and the other 1 mA for reset)

• Linear error: ±0.02% (Typ)

• Conversion time: 526 µs/ch (Typ)

• Built-in system reset: 4.45 V (Typ)

Application

  High-precision control systems such as temperature control and speed control