AD7124-4BRUZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7124-4BRUZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.6364 | $13.64 |
| 10 | $9.8485 | $98.49 |
| 100 | $8.7121 | $871.21 |
| 500 | $8.3333 | $4,166.65 |
| 1,000 | $7.9545 | $7,954.50 |
Drop-in alternatives for AD7124-4BRUZ-RL7 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 In Stock
$6.55 / Unit
View Datasheet βAD7124-4BBCPZ-RL7
β In Stock
$28.6364 / Unit
View Datasheet βAD7190BRUZ
β In Stock
$7.6364 / Unit
View Datasheet βADS124S08
π Reference alternative (not in catalog)
ADS1262
π Reference alternative (not in catalog)
MCP3564
π Reference alternative (not in catalog)
AD7124-4BRUZ-RL7 Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Number of Channels | 4 differential or 7 single-ended/pseudo differential |
| Input Type | Differential, Single-Ended, Pseudo-Differential |
| Data Interface | SPI |
| Sampling Rate | 19.2 kSPS |
| Architecture | Sigma-Delta |
| Analog Supply Voltage | 2.7 V to 3.6 V |
| Digital Supply Voltage | 1.8 V to 3.6 V |
| PGA Gain | 1 to 128 |
| RMS Noise | 1.8 uV at gain 128 |
| Power Consumption | 1.1 mA typical in full power mode |
| Reference Type | Internal, External |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 (Unlimited) |
AD7124-4BRUZ-RL7 Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AIN0 β Analog input 0 |
| Pin 3 | AIN1 β Analog input 1 |
| Pin 4 | AIN2 β Analog input 2 |
| Pin 5 | AIN3 β Analog input 3 |
| Pin 6 | AIN4 β Analog input 4 |
| Pin 7 | AIN5 β Analog input 5 |
| Pin 8 | AIN6 β Analog input 6 |
| Pin 9 | REFIN+ β Positive reference input |
| Pin 10 | REFIN- β Negative reference input |
| Pin 11 | AVSS β Analog ground |
| Pin 12 | DVDD β Digital power supply |
| Pin 13 | DOUT/RDY β Serial data output / ready |
| Pin 14 | DIN β Serial data input |
| Pin 15 | SCLK β Serial clock input |
| Pin 16 | CS β Chip select |
| Pin 17 | SYNC β Synchronization input |
| Pin 18 | P0 β General-purpose digital I/O |
| Pin 19 | P1 β General-purpose digital I/O |
| Pin 20 | P2 β General-purpose digital I/O |
| Pin 21 | P3 β General-purpose digital I/O |
| Pin 22 | DGND β Digital ground |
| Pin 23 | REG β Regulator output |
| Pin 24 | AVDD β Analog power supply |
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-RL7 is suitable for 6 applications: Temperature Measurement, Pressure Measurement, Industrial Process Control, Battery-Powered Instrumentation, Portable Medical Devices, Smart Transmitters.
Temperature Measurement
The AD7124-4BRUZ-RL7 is ideal for temperature measurement using thermocouples, RTDs, and thermistors. Its integrated PGA with gains up to 128 amplifies low-level sensor signals directly, eliminating external amplification. The 24-bit resolution and low noise (1.8 uV RMS at gain 128) ensure accurate temperature readings. The device supports 50 Hz/60 Hz rejection, reducing power line interference. With multiple input channels, it can monitor several temperature sensors simultaneously, making it suitable for industrial process control and HVAC systems.
Recommended
Pressure Measurement
The AD7124-4BRUZ-RL7 is well-suited for pressure measurement applications using strain gauge or piezo-resistive sensors. The integrated PGA provides gains up to 128, amplifying the small output of bridge sensors to match the ADC's full-scale range. The device's low noise performance ensures high-resolution pressure readings, while its low power consumption (1.1 mA) is ideal for battery-powered or loop-powered transmitters. The SPI interface allows easy integration with microcontrollers for digital processing and calibration.
Recommended
Industrial Process Control
In industrial process control, the AD7124-4BRUZ-RL7 provides high-accuracy analog-to-digital conversion for monitoring and control loops. Its 24-bit resolution and low noise ensure precise measurement of process variables such as temperature, pressure, and flow. The device's multiple input channels allow multiplexing of several sensors, reducing component count. The -40Β°C to +125Β°C operating range makes it suitable for harsh industrial environments. The SPI interface enables isolated communication in noisy factory settings.
Recommended
Battery-Powered Instrumentation
The AD7124-4BRUZ-RL7 is optimized for battery-powered instrumentation due to its low power consumption of 1.1 mA in full power mode, with even lower power modes available. This makes it ideal for portable data loggers, handheld meters, and wireless sensor nodes. The integrated PGA and reference reduce external components, saving board space and power. The device can operate from a 2.7V supply, compatible with single-cell lithium batteries. Its high resolution ensures accurate measurements even with low-level signals.
Recommended
Portable Medical Devices
The AD7124-4BRUZ-RL7 is suitable for portable medical devices such as patient monitors, glucose meters, and wearable health trackers. Its low power consumption extends battery life, while its high resolution and low noise ensure accurate physiological signal measurement. The integrated PGA allows direct connection to biosensors like ECG electrodes and temperature probes. The small 24-TSSOP package is ideal for space-constrained designs. The device's SPI interface simplifies integration with medical-grade microcontrollers.
Recommended
Smart Transmitters
The AD7124-4BRUZ-RL7 is ideal for smart transmitters used in industrial automation and process control. Its low power consumption (1.1 mA) and wide operating temperature range (-40Β°C to +125Β°C) make it suitable for loop-powered transmitters that operate on 4-20 mA loops. The integrated PGA and reference reduce external component count, improving reliability. The device's 24-bit resolution ensures high accuracy for critical process variables. The SPI interface allows digital configuration and communication with host systems.
Recommended
Recommended Products Summary
Engineering reference data for AD7124-4BRUZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7124-4BRUZ | AD7190BRUZ | ADS124S08 |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Number of Channels | 4 differential / 7 single-ended | 4 differential / 7 single-ended | 2 differential / 4 single-ended | 4 differential / 8 single-ended |
| Max Data Rate | 19.2 kSPS | 19.2 kSPS | 4.8 kSPS | 4 kSPS |
| PGA Gain | 1 to 128 | 1 to 128 | 1 to 128 | 1 to 128 |
| RMS Noise (gain 128) | 1.8 uV | 1.8 uV | 1.5 uV | 2.0 uV |
| Power Consumption | 1.1 mA | 1.1 mA | 6.5 mA | 2.5 mA |
| Interface | SPI | SPI | SPI | SPI |
Key Differentiators
- Integrated PGA with gains up to 128 (vs AD7190BRUZ)
- Low power consumption (1.1 mA) (vs AD7190BRUZ)
- Multiple input channels (4 differential / 7 single-ended) (vs ADS124S08)
Design Notes
Decouple AVDD and DVDD with 0.1 uF and 10 uF capacitors placed close to the pins. Use separate analog and digital ground planes to minimize noise coupling. The device operates from 2.7V to 3.6V analog supply and 1.8V to 3.6V digital supply; ensure stable supplies within these ranges.
For best noise performance, use a low-noise external reference if the internal reference is not sufficient. Bypass the reference input with a 1 uF capacitor. Keep analog input traces short and shielded to reduce interference. Follow the layout guidelines in the AD7124-4 datasheet for optimal performance.
The SPI interface should be isolated if the ADC is used in noisy industrial environments. Use digital isolators like ADuM1201 to prevent ground loops. Ensure the SYNC pin is properly handled to avoid data corruption. Also, configure the device's power mode appropriately to balance power consumption and performance.
Compliance Information
RoHS3 compliant and REACH unaffected per PartGenie. MSL 1 (Unlimited).
