MAX1110EAP+

The MAX1110EAP+ is a low power, 8bit, 8-channel serial SAR analogue to digital converter (ADC) in 20 pin SSOP package. It has an internal track/hold, voltage reference, clock and serial interface. The device operates from single 2.7V to 5.5V supply and consumes only 85μA while sampling at rates up to 50Ksps. The 8 analogue inputs of MAX1110 are software configurable allowing unipolar/bipolar and single ended/differential operation. Successive approximation conversions are performed using either internal clock or an external serial interface clock. The full scale analogue input range is determined by 2.048V internal reference or by an externally applied reference ranging from 1V to VDD. The MAX1110 has software programmable 2μA automatic power down mode to minimize power consumption. Using power down, the supply current is reduced to 6μA at 1Ksps and 52μA at 10Ksps. It is used in system diagnostics, solar powered remote systems, 4mA to 20mA powered remote data acquisition systems.

• 8-channel single ended or 4-channel differential inputs
• Operating temperature range from -40°C to 85°C
• SPI/QSPI/MICROWIRE compatible serial interface
• Total unadjusted error of ±0.3LSB and gain error of ±1LSB (internal or external reference)
• Integral nonlinearity (INL) of ±0.15LSB at VDD = 2.7V to 3.6V and ±0.2LSB at VDD = 5.5V
• Differential nonlinearity (DNL) of ±1LSB, no missing codes over temperature
• Offset error of ±0.35LSB at VDD = 2.7V to 3.6V and ±0.5LSB at VDD = 5.5V
• Small signal bandwidth (-3dB of roll-off) of 1.5MHz and full power bandwidth of 800KHz
• Channel to channel crosstalk of -75dB at 25KHz
• Power supply rejection ratio (PSRR) of ±0.4mV at VDD = 2.7V to 3.6V

Ứng Dụng

Signal Processing, Portable Devices, Medical

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