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24-bit sigma delta analog-to-digital converter for seismic precision application in TSMC 180nm
24-bit delta sigma AFE (analog front end) having analog-to-digital converter (ADC) containing a low noise programmable gain amplifier (PGA) and 2 channel input multiplexers. This ADC is very well suited for seismic monitoring kind of applications requiring ultra-high accuracy.
The PGA has high input impedance which facilitating interface with external instruments like geophone over gains ranging from 1 to 64
The PGA has high input impedance which facilitating interface with external instruments like geophone over gains ranging from 1 to 64
Features
- High resolution:130dB SNR (250SPS)
- Low noise PGA:Noise=5nV/√Hz
- Programmable gain (1,2 4,8,16,32,64)
- Two channel input multiplexer
- Power Supply:
- ANALOG (AVDD) = Unipolar(5V) or Bipolar(±2.5V)
- DIGITAL (DVDD) = 1.65V to 3.6 V
- Programmable output data rate: 250 SPS to 4 kSPS
- High CMRR: -110 dB
- High accuracy, THD: -122dB
- Offset and gain calibration
- SYNC input
- Programmable power down and reset
- -400C to 850C operating temperature range
- SPI interface
Benefits
- Ultra-low power delta sigma ADC
- High performance up-to 130dB dynamic range
- Industry best IP specifications
Deliverables
- Datasheet
- Hard Macro (GDSII)
- Characterisation Report (as applicable)
- Abstract View (LEF)
- Integration and Customer Support
Applications
- Seismic monitoring
- Industrial process control
- High-accuracy instrumentation
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