Описание
The MAX 170 is a complete CMOS 12-bit A/D converter that combines high speed and accurate performance with a cost and space saving serial interface in an 8-lead DIP or 16-lead surface mount SO package. It uses a high speed DAC and an accurate comparator in a successive approximation loop to achieve a 5.6µs conversion time. An on-chip buried-zener reference provides IOW-drill performance over the full temperature range. External components are limited only to supply and ref-erence decoupling capacitors. The CLOCK kiput can be driven from an external clock source such as a divided-down microprocessor clock. The MA X-170 works with +5V and -12V to -15V supply voltages, typicaly dissipating 135mW. The MAX170 is designed to work with general purpose serial-to-parallel converters, such as the 74HC595. It can also be used with digital-signal-processors such as the TMS32020, TMS320025, NEC 111:1D7720 or the DSP56000. The MAX17O has a three-wire interface that serially outputs a leading one, followed by 12 data bits (MSB first). When the MAX 17O is used with an external sample-and-hold amplifier, a maximum sampling rate of 125kHz is possible.
- 12-Blt Resolution and Linearity
- 5.6µs Fast Conversion Time
- Serial Output Self-Start Mode
- Complete with On-Chip Reference + Low Power (135mW)
- Easy to Opto- or Transforrner-lsolate
- Small Footprint 8-Lead DIP, 16-Lead SO
