AD7124-4BRUZ Guide: 24-Bit Sigma-Delta ADC Specs, Price, and Alternatives

Quick Answers: AD7124-4BRUZ Key Facts and Availability

The AD7124-4BRUZ is a 24-bit sigma-delta ADC from Analog Devices with a maximum output data rate of 19.2 kSPS, programmable gain from 1 to 128, and a flexible input front end supporting 4 differential or 7 single-ended/pseudo differential channels. It operates from 2.7 V to 3.6 V analog and 1.8 V to 3.6 V digital supplies, draws only 1.2 mA typical in full power mode, and is available in a 24-lead TSSOP package. As of 2026-08-23, the AD7124-4BRUZ is active and in stock with 99,999 units available at a 1,000-piece price of $7.9545. This guide explains selection, design-in, alternatives, and market outlook.

Target applications include RTD and thermocouple temperature measurement, bridge sensor pressure sensing, industrial process control, battery-powered portable instruments, weigh scales, and data acquisition systems.

Technical Guide: How to Select and Design In the AD7124-4BRUZ

Core Specifications You Can Rely On

• Resolution: 24 Bit
• Architecture: Sigma-Delta
• Maximum Output Data Rate: 19.2 kSPS
• Programmable Gain: 1 to 128
• Analog Supply Voltage: 2.7 V to 3.6 V
• Digital Supply Voltage: 1.8 V to 3.6 V
• Typical Current Consumption: 1.2 mA (Full Power Mode)
• Internal Reference Drift: 10 ppm/°C (Typical)
• Operating Temperature Range: -40°C to +125°C
• Package: 24-Lead TSSOP
• Mounting Type: Surface Mount
• RoHS Status: Compliant

Select the AD7124-4BRUZ when you need a single-chip analog front end with PGA, reference, and excitation currents for precision sensors such as RTDs, thermocouples, bridge transducers, and strain gauges.

Pinout Snapshot for Board Bring-Up

Use SCLK for serial clock, DIN for serial data in, DOUT/RDY for data out and ready, and CS for chip select. Power the device through AVDD and DVDD with a common GND. Connect REFIN1+ and REFIN1- (or REFIN2+ and REFIN2-) for the reference. Route analog inputs AIN0 and AIN1 as a differential pair, and use IOUT0 or IOUT1 for excitation current. The SYNC pin synchronizes multiple converters. The full pin table lives on the AD7124-4BRUZ product page.

Input Configuration and Gain Planning

Configure four differential inputs or seven single-ended/pseudo differential inputs. The PGA from 1 to 128 lets you digitize millivolt-level signals without an external amplifier. Use the internal reference for low drift; choose an external differential reference when you need a ratiometric bridge measurement.

Power and Decoupling Recommendations

Decouple AVDD and DVDD close to the package. Place reference decoupling capacitors near the REF pins. For noisy industrial environments, isolate the SPI interface. Verify supply sequencing: analog supply 2.7 V to 3.6 V, digital supply 1.8 V to 3.6 V.

Data Interface and Filtering

The SPI interface outputs data with DOUT/RDY as the data-ready indicator. Use CS to select the device. The sigma-delta modulator and digital filter reject out-of-band noise. Select an output data rate up to 19.2 kSPS to balance speed and noise performance for your sensor bandwidth.

Alternatives and Comparison: What Are the Drop-In Replacements?

Based on XAIPART verified data, the only true drop-in replacement is the tape-and-reel version, AD7124-4BRUZ-RL7. The AD7124-4BCPZ has identical electrical specifications but uses a 32-lead LFCSP package, so it is not pin-compatible. The AD7190BRUZ offers higher accuracy with lower noise but consumes more power and lacks integrated excitation sources. For more input channels, the AD7124-8BRUZ provides 8 differential or 15 single-ended inputs in the same package.

Comparison: AD7124-4BRUZ vs AD7124-8BRUZ

Drop-in packaging comparison: AD7124-4BRUZ vs AD7124-4BRUZ-RL7

For 4-channel applications, choose the AD7124-4BRUZ over the AD7124-8BRUZ because it is designed specifically for fewer channels and is more cost-effective. See the AD7124-8BRUZ product page if you need more inputs.

Industry Insight: Market Position, Lifecycle, and Supply

The AD7124-4 is recommended for new designs and its lifecycle status is active. XAIPART stock shows 99,999 units available with a MOQ of 1. As of 2026-08-23, pricing tiers are:

The 1ku list price starts from $6.55 as of 2026-08-21. Distributor lead times vary; in-stock items can ship the same day, while larger quantities may require additional lead time. Browse the ADC/DAC category for related precision converters.

Trends and Outlook: What Should Buyers Watch Next?

Demand for low-power, high-resolution sensing continues to grow in portable and industrial applications. The AD7124-4BRUZ matches this trend with 1.2 mA typical current consumption, 24-bit resolution, and integrated excitation current sources. Because the lifecycle status is active and XAIPART stock is high, buyers can plan for ongoing supply. For high-volume production, specify the AD7124-4BRUZ-RL7 tape-and-reel version. If your application needs more channels, evaluate the AD7124-8BRUZ in the same package, but check pin compatibility for your footprint. Buyers should verify the latest datasheet from the AD7124-4 datasheet and confirm stock before ordering.