AD7124-4BRUZ-RL - 24-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7124-4BRUZ-RL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.46 | $12.46 |
| 10 | $11.21 | $112.10 |
| 100 | $9.97 | $997.00 |
| 500 | $8.73 | $4,365.00 |
| 1,000 | $7.48 | $7,480.00 |
Drop-in alternatives for AD7124-4BRUZ-RL β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7124-4BRUZ
β Drop-Inβ In Stock
$6.55 / Unit
View Datasheet βAD7124-8BRUZ
β Drop-Inπ Reference alternative (not in catalog)
AD7190BRUZ
β Drop-Inβ In Stock
$5.9 / Unit
View Datasheet βMCP3564-E/ST
β Drop-Inπ Reference alternative (not in catalog)
AD7124-4BRUZ-RL Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Channels | 4 Differential or 7 Single-Ended |
| Input Type | Differential, Single-Ended |
| Data Interface | SPI |
| Sampling Rate | 19.2 kSPS (max) |
| Architecture | Sigma-Delta |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 3.6V |
| Voltage - Supply, Digital | 1.8V ~ 3.6V |
| Features | PGA, Temperature Sensor |
| Operating Temperature | -40Β°C ~ +105Β°C |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
AD7124-4BRUZ-RL Pin Configuration
| Pin 1 | SCLK β Serial clock input for SPI |
| Pin 2 | DIN β Serial data input for SPI |
| Pin 3 | DOUT β Serial data output for SPI |
| Pin 4 | CS β Chip select input (active low) |
| Pin 5 | DVDD β Digital supply voltage |
| Pin 6 | GND β Ground |
| Pin 7 | AVDD β Analog supply voltage |
| Pin 8 | REFIN1+ β Positive reference input 1 |
| Pin 9 | REFIN1- β Negative reference input 1 |
| Pin 10 | REFIN2+ β Positive reference input 2 |
| Pin 11 | REFIN2- β Negative reference input 2 |
| Pin 12 | AIN0 β Analog input 0 |
| Pin 13 | AIN1 β Analog input 1 |
| Pin 14 | AIN2 β Analog input 2 |
| Pin 15 | AIN3 β Analog input 3 |
| Pin 16 | AIN4 β Analog input 4 |
| Pin 17 | AIN5 β Analog input 5 |
| Pin 18 | AIN6 β Analog input 6 |
| Pin 19 | REFOUT β Internal reference output |
| Pin 20 | P0 β General-purpose digital I/O |
| Pin 21 | P1 β General-purpose digital I/O |
| Pin 22 | P2 β General-purpose digital I/O |
| Pin 23 | P3 β General-purpose digital I/O |
| Pin 24 | SYNC β Synchronization input for multiple ADCs |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7124-4BRUZ-RL is suitable for 6 applications: Smart Transmitters, Process Control Input Modules, Battery-Powered Instrumentation, Temperature Measurement Systems, Pressure and Strain Gauge Measurement, Data Acquisition Systems.
Smart Transmitters
The AD7124-4BRUZ-RL is ideal for smart transmitters used in industrial process control. Its low power consumption (1.2 mA in full power mode) and high resolution (24-bit) enable accurate measurement of pressure, temperature, and flow. The integrated PGA allows direct connection to sensors with small output signals, while the 50/60 Hz rejection mode minimizes power line interference. The device's SPI interface simplifies communication with a host microcontroller, and its wide operating temperature range (-40Β°C to +105Β°C) ensures reliable operation in harsh industrial environments.
Recommended
Process Control Input Modules
In process control systems, the AD7124-4BRUZ-RL provides high-accuracy analog input measurement for voltage and current signals. Its 24-bit resolution and low noise (1.8 uV RMS at gain 128) ensure precise monitoring of process variables. The device supports multiple input configurations (differential or single-ended) to accommodate various sensor types. The integrated reference and PGA reduce external component count, simplifying module design. The SPI interface allows easy integration with PLCs or distributed control systems, and the device's diagnostic features (burnout current) enhance system reliability.
Recommended
Battery-Powered Instrumentation
The AD7124-4BRUZ-RL is well-suited for battery-powered instruments due to its low power modes. In low power mode, it consumes only 0.3 mA, extending battery life in portable devices. The device can operate from a 2.7V supply, making it compatible with single-cell lithium batteries. Its high resolution enables accurate measurement of sensor outputs, such as temperature and humidity, in data loggers and handheld meters. The power-down mode further reduces current consumption to microamps, ideal for intermittent measurements. The small 24-TSSOP package saves board space in compact designs.
Recommended
Temperature Measurement Systems
The AD7124-4BRUZ-RL excels in temperature measurement applications, such as thermocouple and RTD sensing. Its integrated PGA with gains up to 128 amplifies the small voltages from thermocouples, while the internal reference provides a stable voltage for ratiometric measurements. The device's low noise (1.8 uV RMS) ensures accurate temperature readings with high resolution. The 50/60 Hz rejection mode filters out power line noise, which is critical in industrial environments. The SPI interface allows easy connection to a microcontroller for linearization and cold-junction compensation. The device's wide temperature range (-40Β°C to +105Β°C) matches the operating range of most industrial sensors.
Recommended
Pressure and Strain Gauge Measurement
The AD7124-4BRUZ-RL is ideal for pressure and strain gauge applications, where high resolution and low noise are essential. The device's PGA can be configured for gains up to 128, allowing direct connection to bridge sensors with small output voltages. The 24-bit resolution provides excellent dynamic range, enabling detection of minute changes in pressure or strain. The integrated reference and burnout current source simplify sensor excitation and fault detection. The device's low power consumption is beneficial for remote or battery-powered sensing nodes. The SPI interface facilitates data transfer to a host processor for calibration and compensation.
Recommended
Data Acquisition Systems
The AD7124-4BRUZ-RL is a key component in multi-channel data acquisition systems, providing high-resolution analog-to-digital conversion for various sensors. Its multiple input channels (4 differential or 7 single-ended) allow simultaneous measurement of different signals. The device's low noise and high linearity ensure accurate data capture for scientific and industrial applications. The SPI interface supports daisy-chaining multiple ADCs for even more channels. The device's power modes enable optimization between performance and power consumption, making it suitable for both benchtop and portable systems. The integrated reference and PGA reduce external components, simplifying system design.
Recommended
Recommended Products Summary
Engineering reference data for AD7124-4BRUZ-RL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7124-4BRUZ | AD7124-4BBCPZ-RL7 | AD7124-8BRUZ | AD7190BRUZ | MCP3564-E/ST |
|---|---|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 32-LFCSP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Microchip Technology |
| Resolution | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit |
| Number of Inputs | 4 Differential or 7 Single-Ended | 4 Differential or 7 Single-Ended | 4 Differential or 7 Single-Ended | 8 Differential or 15 Single-Ended | 2 Differential | 4 Differential |
| Max Sampling Rate | 19.2 kSPS | 19.2 kSPS | 19.2 kSPS | 19.2 kSPS | 4.8 kSPS | 153.6 kSPS |
| Power Consumption (Full Mode) | 1.2 mA | 1.2 mA | 1.2 mA | 1.2 mA | 6.2 mA | 1.5 mA |
| Integrated PGA | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-128) | Yes (Gain 1-64) |
| Internal Reference | Yes (5 ppm/Β°C) | Yes (5 ppm/Β°C) | Yes (5 ppm/Β°C) | Yes (5 ppm/Β°C) | Yes (4 ppm/Β°C) | Yes (10 ppm/Β°C) |
| 50/60 Hz Rejection | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Lower power consumption in full mode (vs AD7190BRUZ)
- More input channels (vs AD7190BRUZ)
- Higher maximum sampling rate (vs AD7190BRUZ)
Design Notes
Provide clean power supplies to the AD7124-4. Use a low-noise LDO regulator for AVDD and DVDD, and place 100 nF decoupling capacitors close to each supply pin. A 1 uF capacitor on REFOUT is recommended. Avoid sharing the analog supply with digital circuits to prevent noise coupling.
For optimal noise performance, use a solid ground plane and separate analog and digital ground areas, connecting them at a single point. Keep analog input traces short and shielded from digital signals. Place the ADC close to the sensor to minimize trace length and reduce noise pickup.
Ensure the SPI interface is properly configured with correct polarity and phase. The AD7124-4 supports SPI mode 0 (CPOL=0, CPHA=0) and mode 3 (CPOL=1, CPHA=1). Incorrect SPI settings can lead to communication errors. Also, verify that the reference voltage is within the specified range to avoid inaccurate conversions.
Compliance Information
ROHS3 Compliant per PartGenie. REACH Unaffected. Not AEC-Q100 qualified.
