MAX197BCAI+T

The MAX197BCAI+T from Maxim Integrated Products 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 14bit and provides user flexibility to interface 4mA to 20mA, ±12V and ±15V powered sensors to single +5V system. It 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. Applications include industrial control, robotics, automatic testing systems, medical and telecommunications.

• Supply voltage range from 4.75V to 5.25V, operating temperature range from 0°C to 70°C
• A fault condition on any channel does not affect the conversion result of the selected channel
• Integral nonlinearity (INL) of ±1LSB and differential nonlinearity (DNL) of ±1LSB
• Internal or external acquisition control, standard microprocessor (µP) interface
• Conversion time of 6µs (external CLK) and 7.7µs (internal CLK, CCLK = 100pF)
• Hardware active-low SHDN pin and two programmable powerdown modes
• Offset error of ±5LSB (unipolar) and ±10LSB (bipolar)
• Gain error of ±10LSB (unipolar) and ±10LSB (bipolar), overvoltage tolerant to ±16.5V
• 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)