AD7798BRUZ

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AD7798BRUZ

+Nomenclature

IC ADC 16BIT SIGMA-DELTA 16TSSOP

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Spécifications

Attribut Valeur
Package Bulk,Tube
ProductStatus Active
NumberofBits 16
SamplingRate(PerSecond) 470
NumberofInputs 3
InputType Differential
DataInterface SPI, DSP
Configuration MUX-ADC
NumberofA/DConverters 1
Architecture Sigma-Delta
ReferenceType External
Voltage-SupplyAnalog 2.7V ~ 5.25V
Voltage-SupplyDigital 2.7V ~ 5.25V
OperatingTemperature -40°C ~ 105°C
Package/Case 16-TSSOP (0.173, 4.40mm Width)
SupplierDevicePackage 16-TSSOP

Présentation

Description

The AD7798BRUZ is a low-power, 24-bit sigma-delta (Σ-Δ) ADC from Analog Devices, designed for precision measurement applications. It features three differential inputs, an on-chip programmable gain amplifier (PGA), and a low-noise internal reference.
Key specifications:
- Resolution: 24 bits
- Sampling Rate: Up to 16.7 Hz (with PGA disabled)
- Power Consumption: < 500 µA (typical)
- Input Channels: 3 differential or 5 pseudo-differential
- Interface: SPI-compatible
The ADC includes built-in diagnostics, burnout current sources, and operates from a 2.7V to 5.25V supply, making it ideal for industrial, medical, and sensor interface applications where low noise and high accuracy are critical.
Its small TSSOP-16 package and integrated features reduce external component count, simplifying design.
For detailed specs, refer to the datasheet on Analog Devices' website.

Equivalent

Equivalent products to the AD7798BRUZ (24-bit ADC with PGA) include:
- AD7799BRUZ: Similar but with a faster output rate.
- ADS124S08: Texas Instruments' 24-bit ADC with PGA.
- LTC2440: Linear Tech's 24-bit ADC, high precision.
- MCP3551: Microchip's 22-bit ADC, lower resolution.
- MAX11270: Maxim's 24-bit ADC with PGA.
These alternatives offer comparable features like low noise, high resolution, and integrated PGA for sensor applications.

Features

The AD7798BRUZ is a low-power, 16/24-bit sigma-delta ADC with key features:
- Resolution: 16/24-bit selectable.
- Channels: 3 differential or 5 pseudo-differential inputs.
- Low Noise: 40 nV RMS at 4.17 Hz (24-bit mode).
- Low Power: 65 µA (typical) in continuous mode.
- On-Chip Features: PGA (gain 1–128), internal reference (1.17 V), burnout/excitation currents.
- Interface: SPI-compatible.
- Supply Voltage: 2.7–5.25 V.
- Temperature Range: -40°C to +105°C.
- Package: 16-lead TSSOP.
Ideal for precision sensor measurements in industrial, medical, and instrumentation applications.

Pinout

The AD7798BRUZ is a 16-pin (TSSOP package) 24-bit sigma-delta ADC designed for low-power precision measurement.
Key Functions:
- Analog Inputs: 3 differential/5 pseudo-differential channels.
- Interface: SPI-compatible serial communication.
- On-Chip Features: PGA (gain: 1–128), internal reference (1.17V), burnout/excitation currents for sensors.
- Power Supply: 2.7–5.25V, ultra-low power (typ. 65µA).
Pin Highlights:
- AIN1+/AIN1– to AIN3+/AIN3–: Differential inputs.
- REFIN1+/REFIN1–: External reference input.
- SCLK, DIN, DOUT, CS: SPI control.
- DRDY: Data-ready output.
Ideal for sensor interfaces (RTDs, thermocouples) and portable instrumentation.

Manufacturer

The AD7798BRUZ is manufactured by Analog Devices, Inc. (ADI), a leading global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965 and headquartered in Norwood, Massachusetts, ADI is renowned for its precision data converters, amplifiers, and sensor interface solutions. The AD7798BRUZ is a low-power, 24-bit sigma-delta ADC designed for precision measurement applications like industrial process control and medical instrumentation. Analog Devices is recognized for innovation and reliability in the electronics industry.

Application

The AD7798BRUZ is a low-power, 24-bit sigma-delta ADC designed for precision measurement applications. Key application areas include:
- Industrial Process Control: Monitoring sensors (e.g., temperature, pressure, strain).
- Medical Devices: Portable and wearable health monitoring equipment.
- Weigh Scales: High-accuracy load cell measurements.
- Data Acquisition Systems: Low-noise signal conditioning.
- Energy Management: Power monitoring in smart meters.
Its low noise, high resolution, and integrated features (PGA, reference) make it ideal for battery-powered and space-constrained systems.

Package

The AD7798BRUZ comes in a TSSOP-24 package. This surface-mount type features a thin-shrink small outline with 24 pins, suitable for compact PCB designs. The package dimensions are approximately 7.8mm x 4.4mm with a height of 1.05mm, making it ideal for space-constrained applications.

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