Product Details
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GENERAL DESCRIPTION The AD7794/AD7795 are low power, low noise, complete analog front ends for high precision measurement applications. They contain a low noise, 24-/16-bit ∑-Δ ADC with six differential inputs. The on-chip low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC.
Up to 23 effective bits RMS noise: 40 nV @ 4.17 Hz, 85 nV @ 16.7 Hz Current: 400 μA typical Power-down: 1 μA maximum Low noise, programmable gain, instrumentation amp Band gap reference with 4 ppm/°C drift typical Update rate: 4.17 Hz to 470 Hz Six differential analog inputs Internal clock oscillator Simultaneous 50 Hz/60 Hz rejection Reference detect Programmable current sources On-chip bias voltage generator Burnout currents Low-side power switch Power supply: 2.7 V to 5.25 V Temperature range: B grade: –40°C to +105°C C grade: –40°C to +125°C Independent interface power supply 24-lead TSSOP 3-wire serial interface SPI?, QSPI?, MICROWIRE?, and DSP compatible Schmitt trigger on SCLK APPLICATIONS Temperature measurement Pressure measurement Weigh scales Strain gage transducers Gas analysis |
Product Description
| Type | Description |
| ANSC PART# | ANSC - AD7795BRUZ |
| Category | Integrated Circuits (ICs) |
| Data Acquisition | |
| Analog to Digital Converters (ADC) | |
| Manufacturer | Original |
| Series | - |
| Packaging | Tube |
| Part Status | Active |
| Number of Bits | 16 |
| Sampling Rate (Per Second) | 470 |
| Number of Inputs | 6 |
| Input Type | Differential |
| Data Interface | SPI, DSP |
| Configuration | MUX-ADC |
| Ratio - S/H:ADC | - |
| Number of A/D Converters | 1 |
| Architecture | Sigma-Delta |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V |
| Features | PGA, Temperature Sensor |
| Operating Temperature |
-40°C ~ 105°C |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| Base Product Number | AD7795 |
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