The SSP1220 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the SSP1220 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and bridge sensors. Power consumption is as low as 120 µA@3.3V when operating in duty cycle mode with the PGA disabled. The SSP1220 is offered in a TSSOP-16 package and is specified over a temperature range of –40℃ to +125℃.
Features
- Low Current Consumption: As Low as 120 μA (typ) in Duty-Cycle Mode@3.3V
- Wide Supply Range: 2.3 V to 5.5 V
- Programmable Gain: 1 V/V to 128 V/V
- Programmable Data Rates: Up to 2 kSPS
- 24-Bit Noise-Free Resolution at 20 SPS
- Simultaneous 50/60-Hz Rejection at 20 SPS with Single-Cycle Settling Digital Filter
- Two Differential or Four Single-Ended Inputs
- Dual-Matched Programmable Current Sources: 50 μA to 1.5 mA
- Internal 2.048-V Ref: 5 ppm/℃ (typ) Drift
- Internal 2% Accurate Oscillator
- Internal Temperature Sensor: 1℃ (typ)
- SPI-Compatible Interface(mode1)
- Package: TSSOP-16
- Internal 2% Accurate Oscillator
- Internal Temperature Sensor: 1℃ (typ)
- SPI-Compatible Interface(mode1)
- Package: TSSOP-16
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Application
- Temperature Sensor Measurements: Thermistors/Thermocouples/Resistance
- Temperature Detectors (RTDs): 2-, 3-, or 4-Wire Types
- Resistive Bridge Sensor Measurements: Pressure Sensors/Strain Gauges/Weigh Scales
- Portable Instrumentation
- Factory Automation and Process Controls
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