MAX191ACWG+

The MAX191ACWG+ is a low-power, 12bit sampling ADC with internal reference and power-down in 24 WSOIC package. The MAX191 is a monolithic, CMOS, 12-bit ADC featuring differential inputs, track/hold (T/H), internal voltage reference, internal or external clock and parallel or serial µP interface. The MAX191 has a 7.5µs conversion time, a 2µs acquisition time and 100Ksps sample rate. The device features a logic power-down input which reduces the 3mA VDD supply current to 50µA maximum including the internal-reference current. Decoupling capacitors are the only external components needed for the power supply and reference. This ADC operates with either an external reference or an internal reference that features an adjustment input for trimming system gain errors. The MAX191 provides three interface modes two 8-bit parallel modes and a serial interface mode that is compatible with SPI, QSPI and MICROWIRE serial interface standards.

• Single +5V supply or from dual ±5V supplies
• INL is ±1/2, DNL is ±1LSB, offset error is ±1LSB, gain error is ±2LSB
• Internal reference with adjustment capability
• Low power 3mA operating mode, 20μA power down mode
• Sampling rate is 100Ksps
• Serial and 8bit parallel μP interface
• Signal to noise plus distortion ratio is 70dB, total harmonic distortion is -80dB
• Spurious-free dynamic range is 80dB
• Conversion time is 12μs(internal CLK, CL = 120pF)
• Operating temperature range from 0°C to 70°C

Applications

Signal Processing, Portable Devices, Consumer Electronics

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party