AD7124-8BCPZ - 24-Bit Sigma-Delta ADC | Analog Devices
MPN: AD7124-8BCPZ 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 AD7124-8BCPZ 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:
AD7124-8BCPZ-RL7
π Reference alternative (not in catalog)
AD7124-4BCPZ
π Reference alternative (not in catalog)
AD7124-8BBCPZ
π Reference alternative (not in catalog)
ADS124S08
π Reference alternative (not in catalog)
ADS1261
π Reference alternative (not in catalog)
AD7124-8BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Channels | 8, 15, 16 Input |
| Input Type | Differential, Pseudo-Differential |
| Data Interface | SPI |
| Sampling Rate | 19.2 kSPS |
| Architecture | Sigma-Delta |
| Supply Voltage | 2.7V to 3.6V |
| RMS Noise | 1.8 Β΅V at 25 SPS |
| Power Consumption | 1.2 mA (full power mode) |
| PGA Gain | 1 to 128 |
| Reference Type | Internal, External |
| Operating Temperature | -40Β°C to +125Β°C |
| Package | 32-LFCSP (5x5 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD7124-8BCPZ Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AVSS β Analog ground |
| Pin 3 | AIN0 β Analog input 0 |
| Pin 4 | AIN1 β Analog input 1 |
| Pin 5 | AIN2 β Analog input 2 |
| Pin 6 | AIN3 β Analog input 3 |
| Pin 7 | AIN4 β Analog input 4 |
| Pin 8 | AIN5 β Analog input 5 |
| Pin 9 | AIN6 β Analog input 6 |
| Pin 10 | AIN7 β Analog input 7 |
| Pin 11 | AIN8 β Analog input 8 |
| Pin 12 | AIN9 β Analog input 9 |
| Pin 13 | AIN10 β Analog input 10 |
| Pin 14 | AIN11 β Analog input 11 |
| Pin 15 | AIN12 β Analog input 12 |
| Pin 16 | AIN13 β Analog input 13 |
| Pin 17 | AIN14 β Analog input 14 |
| Pin 18 | AIN15 β Analog input 15 |
| Pin 19 | REFIN+ β Positive reference input |
| Pin 20 | REFIN- β Negative reference input |
| Pin 21 | DVDD β Digital power supply |
| Pin 22 | DVSS β Digital ground |
| Pin 23 | SCLK β Serial clock input |
| Pin 24 | DIN β Serial data input |
| Pin 25 | DOUT β Serial data output |
| Pin 26 | CS β Chip select |
| Pin 27 | SYNC β Synchronization input |
| Pin 28 | PDRST β Power-down reset |
| Pin 29 | GPIO0 β General purpose I/O 0 |
| Pin 30 | GPIO1 β General purpose I/O 1 |
| Pin 31 | GPIO2 β General purpose I/O 2 |
| Pin 32 | GPIO3 β General purpose I/O 3 |
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
AD7124-8BCPZ is suitable for 6 applications: Temperature Measurement, Pressure Measurement, Industrial Process Control, Weigh Scales, Flow Meters, Battery Monitoring Systems.
Temperature Measurement
The AD7124-8BCPZ is ideal for temperature measurement using thermocouples, RTDs, and thermistors. Its integrated PGA with gains up to 128 amplifies low-level sensor signals, while the 24-bit resolution and low noise (1.8 Β΅V RMS at 25 SPS) ensure accurate readings. The device supports multiple input channels, allowing simultaneous monitoring of several sensors. Its low power consumption (1.2 mA) is beneficial for portable temperature loggers. The internal reference provides stability over temperature, reducing external component count. With a wide operating temperature range (-40Β°C to +125Β°C), it suits industrial temperature monitoring systems.
Recommended
Pressure Measurement
The AD7124-8BCPZ is well-suited for pressure measurement applications, such as industrial process control and automotive sensors. Its high resolution (24-bit) and low noise enable precise detection of small pressure changes. The integrated PGA allows direct connection to bridge-type pressure sensors, providing gains up to 128 to amplify millivolt-level outputs. The device's multiple input channels support differential and pseudo-differential configurations, accommodating various sensor topologies. Its SPI interface simplifies integration with microcontrollers. The low power consumption is advantageous for battery-powered pressure loggers. The wide temperature range ensures reliable operation in harsh environments.
Recommended
Industrial Process Control
In industrial process control, the AD7124-8BCPZ 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 like flow, level, and temperature. The device's flexible input multiplexer allows connection to multiple sensors, reducing component count. The integrated PGA and reference simplify the analog front end, while the SPI interface enables easy communication with PLCs or microcontrollers. The wide operating temperature range (-40Β°C to +125Β°C) and low power consumption make it suitable for field-mounted instruments. Its robust design ensures reliable operation in industrial environments.
Recommended
Weigh Scales
The AD7124-8BCPZ is an excellent choice for weigh scale applications, offering high resolution and low noise for accurate weight measurement. Its integrated PGA with gains up to 128 amplifies the small output from load cells, while the 24-bit ADC ensures precise conversion. The device supports multiple channels, enabling connection to multiple load cells for larger scales. Its low power consumption is ideal for battery-operated scales. The internal reference provides stability, reducing external components. The SPI interface allows easy integration with microcontrollers for display and communication. The wide temperature range ensures reliable operation in various environments.
Recommended
Flow Meters
The AD7124-8BCPZ is suitable for flow meter applications, providing high-resolution conversion of flow sensor signals. Its 24-bit resolution and low noise enable accurate measurement of flow rates. The integrated PGA allows direct connection to various flow sensors, such as turbine or electromagnetic types. The device's multiple input channels support differential and pseudo-differential configurations, accommodating different sensor outputs. Its low power consumption is beneficial for battery-powered flow meters. The SPI interface simplifies data transfer to microcontrollers. The wide operating temperature range ensures reliable operation in industrial and outdoor environments.
Recommended
Battery Monitoring Systems
The AD7124-8BCPZ is ideal for battery monitoring systems, where accurate voltage and current measurement is critical. Its high resolution (24-bit) and low noise enable precise monitoring of battery parameters. The device's multiple input channels allow simultaneous measurement of cell voltages and currents. The integrated PGA can amplify small shunt voltages for current sensing. Its low power consumption is essential for extending battery life in monitoring systems. The SPI interface facilitates communication with a host controller. The wide temperature range ensures reliable operation in automotive and industrial battery applications.
Recommended
Recommended Products Summary
Engineering reference data for AD7124-8BCPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7124-8BCPZ-RL7 | AD7124-4BCPZ | ADS124S08 |
|---|---|---|---|---|
| Package | 32-LFCSP (5x5 mm) | 32-LFCSP (5x5 mm) | 32-LFCSP (5x5 mm) | 32-LFCSP (5x5 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 Bit | 24 Bit | 24 Bit | 24 Bit |
| Number of Channels | 8, 15, 16 Input | 8, 15, 16 Input | 4, 7, 8 Input | 8, 15, 16 Input |
| Sampling Rate | 19.2 kSPS | 19.2 kSPS | 19.2 kSPS | 4 kSPS |
| Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 5.25V |
| RMS Noise | 1.8 Β΅V at 25 SPS | 1.8 Β΅V at 25 SPS | 1.8 Β΅V at 25 SPS | 2.1 Β΅V at 20 SPS |
| PGA Gain | 1 to 128 | 1 to 128 | 1 to 128 | 1 to 128 |
Key Differentiators
- Higher channel count (vs AD7124-4BCPZ)
- Lower noise (vs ADS124S08)
- Higher sampling rate (vs ADS124S08)
Design Notes
Ensure proper decoupling of AVDD and DVDD supplies. Place 0.1 Β΅F and 10 Β΅F capacitors close to the power pins to filter high-frequency noise and provide stable operation. Use separate analog and digital ground planes to minimize noise coupling.
Use a clean analog ground plane and avoid routing digital signals near analog inputs. Keep the reference input bypassed with a 10 Β΅F capacitor for stability. For best noise performance, use the internal reference and enable the internal PGA with a gain appropriate for the sensor output level.
Do not exceed the absolute maximum ratings for supply voltage. Ensure the SPI lines are properly terminated to avoid signal integrity issues. When using external reference, ensure it is stable and low-noise to maintain ADC accuracy.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 qualified W-grade variant available for automotive.
