MAX149ACAP+

The MAX149ACAP+ is a +2.7V to +5.25V, low power, 8-channel, serial 10bit analogue to digital converter (ADC) in 20 pin SSOP package. This ADC use a successive-approximation conversion technique and input track/hold (T/H) circuitry to convert an analogue signal to a 10bit digital output at sample rate of 133Ksps. A flexible serial interface provides easy interface to microprocessors (μPs), device provide a hard-wired SHDN(complementary) pin and a software-selectable power-down and can be programmed to automatically shut down at the end of conversion. This device is used in data acquisition, pen digitizers and process control.

• Operating temperature range from 0°C to 70°C
• 8-channel single ended or 4-channel differential inputs
• SPI/QSPI/MICROWIRE/TMS320 compatible 4-wire serial interface
• Software configurable unipolar/bipolar and single-ended/differential operation
• Low power of 1.2mA (133Ksps, 3V supply), 54µA (1Ksps, 3V supply) and 1µA (power-down mode)
• Maximum relative accuracy (INL) is ±0.5LSB, maximum differential nonlinearity (DNL) is ±1LSB
• Maximum gain error is ±1LSB
• Small signal bandwidth is 2.25MHz at -3dB roll-off, total harmonic distortion is -70dB
• Internal 2.5V reference
• Use either internal clock or an external serial-interface clock

Applications

Signal Processing, Industrial, Portable Devices, Medical

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