CMOS High-Speed, 8-Bit ADCs with Multiplexer and Reference

The MAX154/MAX158 are high-speed multi-channel analog-to-digital converters (ADCs). The MAX154 has four analog input channels while the MAX158 has eight channels. Conversion time for both devices is 2.5µs. The MAX154/MAX158 also feature a 2.5V on-chip reference, forming a complete high-speed data acquisition system.

Both converters include a built-in track/hold, eliminating the need for an external track/hold. The analog input range is 0V to +5V, although the ADC operates from a single +5V supply.

Microprocessor interfaces are simplified by the ADC's ability to appear as a memory location or I/O port without the need for external logic. The data outputs use latched, three-state buffer circuitry to allow direct connection to a microprocessor data bus or system input port.

Applications

* Audio Instrumentation * Digital Signal Processing (DSP) * High-Speed Data Acquisition * High-Speed Servo Control * Telecommunications

* One-Chip Data Acquisition System* Four or Eight Analog Input Channels* 2.5µs per Channel Conversion Time* Internal 2.5V Reference* Built-In Track/Hold Function* ½ LSB Error Specification* Single +5V Supply Operation* No External Clock* New Space-Saving SSOP Package