AD7124-4BRUZ-RL Datasheet, Pinout, Alternatives, and Design Guide (2026)

Quick Answers: AD7124-4BRUZ-RL 24-Bit Sigma-Delta ADC

AD7124-4BRUZ-RL is a low-power, 24-bit sigma-delta ADC from Analog Devices. It accepts four differential or seven single-ended inputs, achieves a maximum output data rate of 19.2 kSPS, and operates from a 2.7 V to 3.6 V analog supply and a 1.8 V to 3.6 V digital supply. The device is active on XAIPART with 99,999 units in stock, MOQ 1, and a 1000-piece price of $7.9545 as of 2026-08-23. The integrated PGA provides gains from 1 to 128, and an internal reference with 5 ppm/°C drift simplifies sensor front-end designs.

This pillar article covers the verified specifications, pinout, alternatives, supply information, and design guidance for the AD7124-4BRUZ-RL. All values are taken from the XAIPART product database and the Analog Devices datasheet.

• 24-bit sigma-delta architecture
• 4 differential or 7 single-ended inputs
• Max output data rate: 19.2 kSPS
• Analog supply: 2.7 V to 3.6 V; digital supply: 1.8 V to 3.6 V
• PGA gain: 1 to 128
• RMS noise: 1.8 µV at gain 128, 25 SPS
• 24-lead TSSOP (0.173", 4.40mm Width)

Technical Guide: How to Design the AD7124-4BRUZ-RL Into Your System

Start by selecting the input configuration. The device can be configured as four differential inputs or seven single-ended/pseudo-differential inputs. For a thermocouple or a bridge sensor, use differential mode to reject common-mode noise.

Power Supplies and Decoupling

Power the ADC from clean supplies. The analog supply AVDD can range from 2.7 V to 3.6 V, while the digital supply DVDD can range from 1.8 V to 3.6 V. Place a 100 nF decoupling capacitor on AVDD and DVDD, and a 1 µF capacitor on REFOUT. The internal reference has a typical drift of 5 ppm/°C, making it useful for ratiometric measurements where reference drift is less critical.

SPI Interface

Connect the host microcontroller using the 4-wire SPI interface: SCLK, DIN, DOUT, and CS. The interface is also compatible with 3-wire operation. For lowest noise, route SPI signals away from analog inputs and keep the analog ground plane continuous.

Programmable Gain Amplifier (PGA)

The PGA supports gains from 1 to 128. At gain 128 and 25 SPS, the RMS noise is 1.8 µV. This low noise level allows direct connection to sensors with small output voltages. The 50/60 Hz rejection mode helps reject power-line interference in industrial environments.

Power Modes

Use the three power modes for power/performance trade-off: full power (1.2 mA), mid power (0.6 mA), and low power (0.3 mA). In battery-powered designs, low power mode reduces current consumption while still delivering 24-bit resolution. The device also supports a power-down mode for intermittent measurement applications.

Input Flexibility and Diagnostic Features

The input mux accepts four differential inputs or seven single-ended inputs, giving you flexibility for mixed sensor types. The integrated temperature sensor and burnout current source support cold-junction compensation and open/short detection. This is especially valuable in process-control applications where cable faults must be identified quickly.

Seven-Step Design Checklist

1. Confirm the input configuration: 4 differential or 7 single-ended.
2. Select the analog supply range: 2.7 V to 3.6 V.
3. Select the digital supply range: 1.8 V to 3.6 V.
4. Set the desired data rate up to 19.2 kSPS.
5. Choose PGA gain between 1 and 128.
6. Enable the 50/60 Hz rejection mode when line noise is present.
7. Add 100 nF decoupling on AVDD and DVDD and 1 µF on REFOUT.

See the AD7124-4BRUZ-RL product page for live stock and ordering options. For a more-channel version, review the AD7124-8BRUZ product page, or browse the ADC/DAC category for similar parts.

Alternatives and Comparison: Drop-In Options for AD7124-4BRUZ-RL

The verified alternatives dataset lists two alternatives: AD7124-8BRUZ and MCP3564-E/ST. AD7124-8BRUZ is the most direct drop-in because it has the same package and pinout, with a larger channel count. MCP3564-E/ST is similar in architecture and interface, but it is not verified as a pin-compatible replacement.

As shown, AD7124-8BRUZ offers more input channels while matching the package and pinout. If you need 8 differential or 15 single-ended inputs, choose AD7124-8BRUZ. If you want to evaluate MCP3564-E/ST as a second-source option, verify the exact pinout and electrical compatibility with your design before prototyping.

Industry Insight: Market Position, Lifecycle, and Supply Situation

The AD7124-4BRUZ-RL has an active lifecycle status in the XAIPART database, meaning it remains a recommended part for new designs. Current stock on XAIPART is 99,999 units with a minimum order quantity of 1. As of 2026-08-23, the verified base price is $7.9545; volume pricing steps are $13.6364 at 1 unit, $9.8485 at 10, $8.7121 at 100, $8.3333 at 500, and $7.9545 at 1000.

Analog Devices is the manufacturer, and the tape-and-reel suffix (RL) indicates the part is supplied on tape and reel for automated assembly. This packaging choice is well suited to high-volume production lines. The 24-lead TSSOP package is widely used in industrial instrumentation, and the part's -40°C to +105°C operating temperature range covers most process-control applications.

Supply conditions appear healthy based on the large stock count. However, stock levels and lead times change frequently; verify current availability and lead times with your distributor before production.

Trends and Outlook: What Buyers Should Watch

Buyers should watch for continued demand for low-power, high-resolution precision ADCs. The AD7124-4BRUZ-RL's three power modes (1.2 mA, 0.6 mA, 0.3 mA) and 24-bit resolution make it a strong candidate for battery-powered industrial sensors and wireless data acquisition. The integrated PGA with gain up to 128 and the 50/60 Hz rejection mode reduce the need for external analog front-end components.

On the supply side, the active lifecycle and tape-and-reel packaging indicate the part is targeted at production volumes. As of 2026-08-23, pricing at 1000 units ($7.9545) is about 42% lower than single-unit pricing, so volume buyers should negotiate around the 1000-piece tier.

Engineers evaluating second sources should track the AD7124-8BRUZ if channel count matters. If MCP3564-E/ST is considered, pin-level compatibility must be confirmed with the manufacturer datasheet before committing a layout.

Watch for firmware updates in host microcontrollers that support the AD7124's SPI register map; the ability to move between 3-wire and 4-wire SPI and configure full/mid/low power modes is a key differentiator for low-power IoT nodes.