Power Electronics

Touchstone Semiconductor Second Sources Maxim A/D Converter

Touchstone Semiconductor announced the immediate availability of the TSM1285, a new 12-bit, 300ksps ADC that can be used as a drop-in replacement for Maxim's MAX1285 ADC.

At $1.20 in 1000-piece quantities, the new Touchstone TSM1285 is five times less expensive, pin-compatible, function/specification-identical to Maxim Integrated Products' MAX1285. It is also a four times higher-speed, pin-for-pin upgrade to the MAX1240 and MAX1241 ADCs at five times and four times lower price, respectively. Touchstone now offers 16 Maxim analog ICs as part of its alternate-source product family.

Touchstone's alternate-source parts are drop-in replacements that can be used in conjunction with the original manufacturer's ICs. Replacement parts ensure customers have access to a reliable supply of parts to build their products. All Touchstone alternate-source analog ICs are in stock and available to ship immediately.


  • Single-Supply Operation: +2.7V to +3.6V
  • DNL & INL: ±1LSB (max)
  • 300ksps Sampling Rate
  • Low Conversion-Mode Supply Current: 2.5mA @ 300ksps
  • Low Supply Current in Shutdown: 2µA
  • Internal Track-and-Hold
  • Internal +2.5V Reference
  • SPI™/QSPI™/MICROWIRE™ 3-Wire Serial-Interface

The TSM1285 is available in an 8-pin SOIC package. The TSM1285BC is fully specified over the 0°C to +70°C temperature range while the TSM1285BE is fully specified over the -40°C to +85°C temperature range.

Touchstone Semiconductor
Part Number: TSM1285

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