MS51688
MS51688N is an 8-channel, 16bit, charge redistribution successive approximation analog-to-digital converter, using a single power supply.
The MS51688N has all the components required for a multichannel, low-power data acquisition system, including: a true 16-bit SAR ADC with no code loss; An 8-channel low-crosstalk multiplexer for configuring inputs as single-ended inputs (with or without reference ground), differential inputs, or bipolar inputs; Internal low-drift reference source (4.096V) and buffer; Temperature sensor; Optional monopole filter; And a sequencer that is very useful for multi-channel sequential sampling.
MS51688N uses a simple SPI interface to write configuration registers and read conversion results. The SPI interface uses a separate power supply (VIO), which is set to the host logic level. Power consumption is proportional to the conversion rate.
The MS51688N comes in a small QFN20 package and operates from -40°C to +125°C.
- • 16-bit lossless resolution
- • Integrated multiplexer: 8-way selectable input configuration
- • Unipolar and bipolar inputs, single-ended and differential inputs
- • INL (@external reference 2.048V) : ±0.5LSB (typical),
- ±1.5LSB (Max)
- • Dynamic range: 92dB
- • SINAD (@external reference 2.048V) : 92dB(20kHz)
- • Analog input range: 0 to VREF (VREF up to VDD)
- • Multiple reference: internal 2.5V or 4.096V, external reference
- • Internal temperature sensor
- • Channel sequencer
- • Single supply operation: 5.0V, logic supply: 1.8V to 5.0V
- • Serial interface: compatible with SPI, MICROWIRE, QSPI and DSP
- • Power consumption: 7.5mW(5V@100kSPS),
- 23mW(5V@500kSPS)
- • Standby current: 200nA@5V
