MAX192ACWP+

The MAX192ACWP+ is a low power, 8-channel, serial 10bit analogue to digital converter (ADC) in 20 pin WSOIC package. This low cost, 10bit data acquisition system combines an 8-channel multiplexer, high bandwidth track/hold and serial interface with high conversion speed and ultra low power consumption. The analogue inputs are software configurable for single ended and differential (unipolar/bipolar) operation. The 4 wire serial interface connects directly to SPI, QSPI and Microwire devices without using external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX192 uses either the internal clock or an external serial interface clock to perform successive approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used. The MAX192 has an internal 4.096V reference with a drift of ±30ppm typical. A reference buffer amplifier simplifies gain trim and two sub-LSBs reduce quantization errors.

• Supply voltage range from 4.75V to 5.25V
• Operating temperature range from 0°C to 70°C
• 8-channel single ended or 4-channel differential inputs
• Low power consumption of 1.5mA (operating), 2μA (full power-down) & 30μA (fast power-down)
• Sampling rate of 133KHz and positive supply rejection of ±0.06mV
• Relative accuracy of ±1/2LSB and differential nonlinearity of ±1LSB
• Pin compatible 12bit upgrade to MAX186/MAX188 devices
• Provides hardwired active low SHDN pin and two software selectable power-down modes
• Offset error of ±2LSB and gain error of ±2LSB (external reference, 4.096V)
• Small signal bandwidth (-3dB roll-off) of 4.5MHz and full power bandwidth of 800KHz

Note

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