ADI AD7892BNZ-1

The AD7892 is a high speed, low power, 12-bit A/D converter that operates from a single +5V supply. The part contains a 1.47μs successive approximation ADC, an on-chip track/hold amplifier, an internal +2.5V reference and on-chip versatile interface structures that allow both serial and parallel connection to a microprocessor. The part accepts an analog input range of ±10V (AD7892-1), 0V to +2.5V (AD7892-2) and ±2.5V (AD7892-3). Overvoltage protection on the analog inputs for the AD7892-1 and AD7892-3 allows the input voltage to go to ±17V or ±7V respectively without damaging the ports. The AD7892 offers a choice of two data output formats: a single, parallel, 12-bit word or serial data. Fast bus access times and standard control inputs ensure easy parallel interface to microprocessors and digital signal processors. A high speed serial interface allows direct connection to the serial ports of microcontrollers and digital signal processors. In addition to the traditional dc accuracy specifications such as linearity, full-scale and offset errors, the part is also specified for dynamic performance parameters including harmonic distortion and signal-to-noise ratio. The AD7892 is fabricated in Analog Devices' Linear Compatible CMOS (LC²MOS) process, a mixed technology process that combines precision bipolar circuits with low power CMOS logic. It is available in a 24-lead, 0.3° wide, plastic or hermetic DIP or in a 24-lead SOIC.

• Fast 12-Bit ADC with 1.47μs Conversion Time
• 600 kSPS Throughput Rate (AD7892-3)
• 500 kSPS Throughput Rate (AD7892-1, AD7892-2)
• Single Supply Operation
• On-chip Track/Hold Amplifier
• Selection of Input Ranges: ±10V or ±5V for AD7892-1, 0V to +2.5V for AD7892-2, ±2.5V for AD7892-3
• High Speed Serial and Parallel Interface
• Low Power, 60 mW typ
• Overvoltage Protection on Analog Inputs (AD7892-1 and AD7892-3)