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AD7793BRU
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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：24
- Sampling Rate (Per Second)：470
- Number of Inputs：3
- 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
- Operating Temperature：-40°C ~ 105°C
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7793BRU is a low power, low noise, complete analog front end for high precision measurement applications. It contains a low noise 24-bit Σ-Δ ADC with three differential analog inputs and an on-chip programmable gain instrumentation amplifier. The device features a precision internal band gap reference and supports external differential references. It operates with a power supply from 2.7 V to 5.25 V, consuming 400 μA typical current. Key specifications include up to 23 bits effective resolution, 40 nV RMS noise at 4.17 Hz, and an update rate ranging from 4.17 Hz to 470 Hz. It includes programmable excitation current sources, burnout currents, and a bias voltage generator.
Feature Summary
- Integrated low noise programmable gain instrumentation amplifier
- Internal band gap reference with low drift characteristics
- Programmable excitation current sources for sensor interfacing
- On-chip bias voltage generator and burnout currents
Applications
- Thermocouple measurements
- RTD measurements
- Industrial process control
- Smart transmitters
- Liquid/gas chromatography
Procurement Notes
Verify the specific suffix 'BRU' against the manufacturer's ordering guide to confirm the package type and temperature range. Ensure the component matches the Rev B datasheet specifications. Confirm availability through authorized distributors as stock levels fluctuate. Validate RoHS compliance status prior to procurement.
Selection Notes
Select the AD7793BRU when a 24-bit resolution is required for high precision applications. Choose this model over the AD7792 if higher resolution is necessary. Consider the integrated PGA and reference to simplify circuit design. Verify that the 3-channel input count meets system requirements.
Part Context
The AD7793BRU belongs to the AD7792/AD7793 family of 16-/24-bit Σ-Δ ADCs. These devices are designed as complete analog front ends for high precision measurement applications. The BRU suffix indicates a specific package variant within the Analog Devices portfolio.
Replacement Considerations
The AD7792 is a compatible alternative offering 16-bit resolution. Verify pin compatibility and register mapping before substitution. Ensure the lower resolution of the AD7792 meets the application's accuracy requirements.
