MAX197AEAI+

The MAX197AEAI+ is a multi range (±10V, ±5V, +10V, +5V), 12bit data acquisition system (DAS) with 8+4 bus interface in 28 pin SSOP package. It requires only single +5V supply for operation and accepts signals at its analogue inputs that may span both above the power supply rail and below ground. This system provides 8 analogue input channels that are independently software programmable for variety of ranges including ±10V, ±5V, 0V to +10V or 0V to +5V. This increases effective dynamic range to 14bits and provides the user flexibility to interface 4mA to 20mA, ±12V and ±15V powered sensors to a single +5V system. In addition, the converter is overvoltage tolerant to ±16.5V. A fault condition on any channel does not affect the conversion result of the selected channel. The MAX197A also includes 5MHz bandwidth track/hold, 100Ksps throughput rate, software selectable internal or external clock and acquisition, 8+4 parallel interface and an internal 4.096V or an external reference.

• Supply voltage range from 4.75V to 5.25V
• Operating temperature range from -40°C to 85°C
• Integral nonlinearity (INL) of ±1/2LSB and differential nonlinearity (DNL) of ±1LSB
• Internal or external acquisition control
• Conversion time of 6μs (external CLK) and 7.7μs (internal CLK, CCLK = 100pF)
• Two power down modes
• Offset error of ±3LSB (unipolar) and ±5LSB (bipolar)
• Gain error of ±7LSB (unipolar) and ±7LSB (bipolar)
• Throughput rate of 100Ksps (external CLK) and 62Ksps (internal CLK, CCLK = 100pF)
• Power supply rejection ratio of ±1/2LSB (external reference = 4.096V) and ±1/2 (internal reference)

Applications

Signal Processing, Industrial, Robotics, Medical, Communications & Networking

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

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