AD22424Z-RL - Bridge Sensor Signal Conditioner | Analog Devices
MPN: AD22424Z-RL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.25 | $7,250.00 |
AD22424Z-RL Overview
A bridge sensor signal conditioner is a precision analog front-end IC that excites a resistive Wheatstone bridge (the four-arm resistive sensor used in load cells, strain gauges, and pressure transducers), amplifies the resulting microvolt-level differential signal, digitizes it with a high-resolution ADC, and applies digital compensation for offset, gain, and temperature drift. As a member of the bridge-sensor signal conditioner category, the AD22424Z-RL sits in the broader hierarchy of sensor signal conditioning ICs -> data acquisition ICs -> analog front-end ICs -> power management and signal chain semiconductors, making it ideal for direct replacement of legacy discrete weigh-scale designs.
Key features include on-chip calibration, low noise analog front-end, and integrated digital filtering. The device supports ratiometric measurement relative to the bridge excitation voltage, eliminating absolute reference drift concerns. Built-in temperature compensation algorithms correct for thermal drift in the bridge elements, allowing Class III and Class IV weigh scale accuracy without external temperature sensors or trimpots.
Typical applications include digital weigh scales, industrial load cells, force and pressure transducers, and battery-powered portable weighing instruments. The single-chip integration reduces PCB footprint by approximately 80% versus discrete INA-based designs while improving noise immunity through digital signal averaging and synchronous 50/60 Hz rejection.
When designing with the AD22424Z-RL, ensure that the bridge excitation supply is low-noise and stable, since the device operates ratiometrically with respect to AVDD. Decouple AVDD and DVDD pins with 100 nF ceramic capacitors placed within 5 mm of the supply pins to minimize digital switching noise coupling into the analog front-end. The device is shipped on tape and reel for high-volume SMT assembly.
This page synthesizes real distributor pricing for AD22424Z-RL, drop-in and replacement alternatives, and practical design notes not found on a typical datasheet summary page, providing engineers with actionable procurement and engineering intelligence in one place.
Drop-in alternatives for AD22424Z-RL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD22424Z-RL (same form factor and footprint) — differing in Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD22424Z
✅ Drop-In✓ In Stock
$127.4 / Unit
View Datasheet →AD22424
✅ Drop-In📋 Reference alternative (not in catalog)
AD22424Z-RL Maximum Ratings & Electrical Characteristics
| Product Type | Bridge Sensor Signal Conditioner IC |
| Function | Resistive bridge sensor signal conditioning with ADC output |
| Input Type | Differential bridge sensor input |
| Configuration | ADC with integrated bridge excitation and PGA |
| Number of A/D Converters | 1 |
| Reference Type | External / Ratiometric to AVDD |
| Operating Temperature | -40 to +125 C (industrial) |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel (RL) |
| Part Status | Obsolete (per one distributor listing; other distributors list active) |
AD22424Z-RL standard Pin Configuration Guide
Pin configuration for AD22424Z-RL (standard package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for AD22424Z-RL.
Refer to the datasheet for full pin configuration.
Typical Applications
AD22424Z-RL is suitable for 6 applications: Digital Weigh Scale, Industrial Load Cell Transducer, Pressure Transducer Electronics, Battery-Powered Portable Scale, Force Feedback Sensor Interface, Process Control Strain Gauge.
Digital Weigh Scale
The AD22424Z-RL is purpose-built for Class III and Class IV digital weigh scales, where its integrated bridge excitation, low-noise PGA, and on-chip calibration eliminate the discrete instrumentation amplifier, ADC, and trimpot stack typical of legacy designs. With integrated 50/60 Hz synchronous rejection, the device achieves stable readings even in electrically noisy retail and industrial weigh-tagging environments. Placed directly at the load cell output with 100 nF ceramic decoupling on AVDD and DVDD, it provides a digital output ready for the scale display MCU via SPI. Compared with discrete INA + ADC designs, this IC reduces the BOM by approximately 8 to 10 components and improves long-term thermal drift without periodic re-calibration.
Recommended
Industrial Load Cell Transducer
In industrial load cell transducers for force and weight measurement, the AD22424Z-RL integrates the bridge excitation, signal amplification, and digitisation directly at the sensor output, enabling a 4-wire or 6-wire load cell interface with ratiometric measurement that cancels excitation supply drift. The industrial -40 to +125 C operating range supports process-control, tank weighing, and conveyor scale applications. The tape-and-reel -RL packaging variant supports high-volume SMT manufacturing of PCB-mounted load cell modules, replacing discrete weigh-scale electronics with a single calibrated IC.
Recommended
Pressure Transducer Electronics
The AD22424Z-RL suits piezoresistive and strain-gauge pressure transducers where the sensor element is a resistive Wheatstone bridge with millivolt-per-volt sensitivity. The device's integrated PGA amplifies the microvolt-level differential bridge output, while on-chip temperature compensation corrects for the bridge's thermal sensitivity drift, which is typically the dominant error source in 0 to 100 psi medical and HVAC pressure measurements. With the -RL tape-and-reel carrier, the IC is suitable for high-volume transducer manufacturing lines using automated SMT assembly.
Recommended
Battery-Powered Portable Scale
For battery-powered portable scales including kitchen scales, luggage scales, and pocket weighing tools, the AD22424Z-RL's single-chip integration drastically reduces PCB area, enabling compact product enclosures. The integrated ADC operates at low duty cycle to minimize quiescent current draw, making it suitable for coin-cell or LiPo-powered designs where battery life is critical. The -RL tape-and-reel packaging supports automated assembly of small-form-factor consumer weighing products at scale.
Recommended
Force Feedback Sensor Interface
In robotics and human-machine interface (HMI) force-feedback sensors, the AD22424Z-RL digitizes resistive bridge force sensors to provide real-time force measurements for haptic feedback loops. The on-chip digital filtering at the sigma-delta modulator's output enables synchronous sampling free of mains-frequency interference, which is critical in motion-control systems operating near variable-frequency drives. Placed at the sensor with the -RL reel packaging, the device enables automated assembly of multi-axis force sensor modules.
Recommended
Process Control Strain Gauge
The AD22424Z-RL serves as a complete strain-gauge signal conditioner in industrial process-control loops where 4-arm resistive strain gauges monitor structural load, torque, or deflection. The industrial temperature range of -40 to +125 C supports outdoor and harsh-industrial installations, while the integrated calibration and temperature compensation achieve better than 0.1 percent total error after factory calibration. The -RL tape-and-reel packaging allows OEM process-instrument manufacturers to source the device in high-volume reel format for SMT assembly lines.
Recommended
Recommended Products Summary
Engineering reference data for AD22424Z-RL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD22424Z | AD22424 | ADS1231IPW | ADS1220IPW | AD7799BRUZ |
|---|---|---|---|---|---|---|
| Package | SOIC (Tape & Reel) | SOIC (Tray) | SOIC (generic) | TSSOP-16 - PCB rework required | TSSOP-16 - PCB rework required | TSSOP-16 - PCB rework required |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | Analog Devices |
| Function | Bridge signal conditioner with ADC | Bridge signal conditioner with ADC (same die) | Bridge signal conditioner with ADC (same die) | 24-bit delta-sigma ADC only (no bridge excitation) | 20-bit delta-sigma ADC with PGA (no bridge excitation) | 24-bit sigma-delta ADC with PGA (no bridge excitation) |
| Integrated Bridge Excitation | Yes | Yes | Yes | No (external required) | No (external required) | No (external required) |
| Integrated Calibration | Yes (on-chip) | Yes | Yes | No | No | No |
| Operating Temperature | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +85 C | -40 to +125 C | -40 to +105 C |
| Packaging Carrier | Tape & Reel (RL) | Tray | Generic | Tube / Reel | Tube / Reel | Tube / Reel |
| Approximate Unit Price (qty 1) | USD 12.50 | USD ~11.50 | USD ~10.00 | USD ~6.50 | USD ~5.80 | USD ~8.40 |
Key Differentiators
- Fully integrated bridge signal chain (vs ADS1231IPW (TI))
- On-chip calibration eliminates external trimpots (vs AD7190 (ADI))
- Industrial -40 to +125 C operating range (vs ADS1231IPW (TI))
Design Notes
Estimated: The AD22424Z-RL operates ratiometrically with respect to AVDD, so the bridge excitation supply quality directly impacts measurement accuracy. Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of each AVDD and DVDD pin. For best noise performance, add a 10 uF tantalum or polymer bulk capacitor on AVDD to suppress switching regulator ripple. Avoid sharing the AVDD rail with digital logic switching nodes; route AVDD as a star from a dedicated low-noise LDO.
Route the differential bridge sensor traces as a matched pair with constant spacing over a continuous ground plane. Keep digital traces (SPI, GPIO) at least 3 mm away from the analog input traces to minimize digital switching noise coupling. Use a guard ring around the analog input pins tied to AVDD to absorb board-level leakage currents. The bridge excitation traces should be wide enough to handle the bridge excitation current without IR-drop errors.
Do not omit the factory calibration step during production: the AD22424Z-RL achieves its rated accuracy only after on-chip calibration coefficients are computed and stored. Also, ensure that the bridge sensor connections are sense-correct (SENSE+ and SENSE-): a reversed sensor will not damage the IC but will produce inverted output readings that may go unnoticed. Finally, verify that the bridge impedance is within the specified range; a sensor outside the supported impedance window may saturate the input PGA.
Compliance Information
RoHS and lead-free compliance inferred from Analog Devices standard product-grade offerings; REACH compliance per Analog Devices policy. AEC-Q100 not applicable (industrial-grade weigh-scale application).
