MAX132CNG+

MAX132CNG+ is a CMOS, ±18bit plus sign, serial-output, analogue-to-digital converter (ADC) with a serial interface. Multi-slope integration provides high-resolution conversions in less time than standard integrating ADCs, allowing operation up to 100 conversions per second. Low conversion noise provides guaranteed operation with ±512mV full-scale input range (2µV/LSB). A simple 4-wire serial interface connects easily to all common microprocessors, and twos-complement output coding simplifies bipolar measurements. Typical supply current is only 60µA and is reduced to 1µA in sleep mode. Four serially programmed digital outputs can be used to control an external multiplexer or programmable-gain amplifier. It is used in applications such as remote data acquisition, battery-powered instruments, industrial process control, transducer-signal measurement, pressure, flow, temperature, voltage, current, resistance, weight.

• Integral nonlinearity is ±0.0015% of FSR typical at (TA = +25°C)
• Conversion time is 63ms minimum at (TA = +25°C)
• Common-mode rejection ratio is ±0.009% of FSR typ at (VCM = ±500mV)
• RMS noise is 15µV typical at (TA = +25°C), performs upto 100 conv/sec
• Zero-reading drift is ±0.15ppm/°C typical, ±2pA typical leakage current
• Positive supply voltage range from 4.5V to 5.5V
• Input capacitance is 5pF maximum at (V+ = 5V, V- = -5V)
• Serial I/O interface with programmed output for Mux and PGA
• Operating temperature range from 0°C to +70°C
• 24 narrow plastic DIP package

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