MAXIM MAX176AEPA+

The MAx176 is a complete analog-to-digital converter (ADC) that achieves a 250k samples per second (ksps) sampling rate by combining a fast track/hold (0.4μs max acquisition time), a 3.5μs ADC, and a buried-zener voltage reference. The device also saves space with serial interface and 8-pin DIP or 16-pin surface-mount SO packages. Supply and reference decoupling capacitors are the only external components needed. The CLOCK input can be driven from an external divided-down microprocessor clock or from the serial-clock output of a microcontroller. The MAX176 works with +5V and -12V to -15V supply voltages (148mW typ power dissipation). The MAx176's 3-wire serial interface works with generalpurpose serial-to-parallel converters, such as the 74HC595, as well as with digital-signal processors and microcontrollers. Its 3-wire serial interface is fully compatible with SPl, QSPI and Microwire interface standards.

• 12-Bit Resolution and Linearity
• 0.4μs Track/Hold Acquisition Time
• 3.5μs Max Conversion Time
• 250ksps Sampling Rate
• SPI-, QSPl- and Microwire-Compatible Serial Output
• ±5V Input Voltage Range
• On-Chip Voltage Reference
• Low Power (148mW)
• Easy to Opto- or Transformer-lsolate
• Small-Footprint 8-Pin DIP, 16-Pin SO

• Telecommunications
• Digital-Signal Processing (DSP)
• Sonar/Radar Signal Processing
• Industrial Data Acquisition