ADA4528-1ARMZ - Zero-Drift RRIO Op Amp | Analog Devices
MPN: ADA4528-1ARMZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.1 | $2,100.00 |
Drop-in alternatives for ADA4528-1ARMZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADA4528-2ARMZ
✅ Drop-In✓ In Stock
$2.8 / Unit
View Datasheet →AD8571ARMZ
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2051CMS8#TRPBF
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4528-1ARMZ Maximum Ratings & Electrical Characteristics
| Amplifier Type | Zero-Drift |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | 1.5 V/µs |
| Gain Bandwidth Product | 4 MHz |
| Current - Input Bias | 300 pA |
| Voltage - Input Offset | 2.5 µV |
| Current - Supply | 1.5 mA |
| Current - Output / Channel | 30 mA |
| Voltage - Supply Span (Min) | 2.2 V |
| Voltage - Supply Span (Max) | 5.5 V |
| Operating Temperature | -40°C to +125°C |
| Package / Case | 8-MSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ADA4528-1ARMZ Pin Configuration
| Pin 1 | OUT — Amplifier output |
| Pin 2 | -IN — Inverting input |
| Pin 3 | +IN — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | NC — No connect |
| Pin 6 | NC — No connect |
| Pin 7 | V+ — Positive supply |
| Pin 8 | NC — No connect |
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
ADA4528-1ARMZ is suitable for 6 applications: Precision Sensor Interface, Medical Instrumentation, Strain Gauge Amplifier, Thermocouple Amplifier, Battery-Powered Precision Circuits, Weigh Scale.
Precision Sensor Interface
The ADA4528-1ARMZ's ultra-low offset voltage (2.5 µV) and drift (0.015 µV/°C) make it ideal for amplifying low-level signals from position and pressure sensors. Its rail-to-rail input and output maximize dynamic range, while the low noise (97 nV p-p) ensures accurate measurement. The device operates from 2.2 V to 5.5 V, compatible with battery-powered sensor nodes. In a typical bridge sensor circuit, the ADA4528-1 is used as a differential amplifier, providing high CMRR to reject common-mode noise. The low input bias current (300 pA) minimizes errors when interfacing with high-impedance sensors.
Recommended
Medical Instrumentation
In medical devices such as ECG and blood pressure monitors, the ADA4528-1ARMZ provides the precision and low noise required for accurate biopotential amplification. Its 2.5 µV offset and 0.015 µV/°C drift ensure stable readings over time and temperature. The device's low supply current (1.5 mA) is suitable for portable, battery-powered medical equipment. The rail-to-rail output allows direct interfacing with ADCs, while the high PSRR rejects power supply noise. The extended temperature range (-40°C to +125°C) supports sterilization and harsh clinical environments.
Recommended
Strain Gauge Amplifier
The ADA4528-1ARMZ is ideal for strain gauge applications where low offset and drift are critical. Its 2.5 µV offset and 0.015 µV/°C drift ensure accurate measurement of micro-strain levels. The device's high gain and excellent CMRR reject common-mode noise in bridge configurations. With a supply range of 2.2 V to 5.5 V, it can be used in portable weighing systems. The low noise (97 nV p-p) allows resolution of small resistance changes. The rail-to-rail output maximizes the ADC input range, improving measurement resolution.
Recommended
Thermocouple Amplifier
The ADA4528-1ARMZ's low offset voltage (2.5 µV) and drift (0.015 µV/°C) make it suitable for thermocouple signal conditioning, where small voltage changes represent temperature. The device's low input bias current (300 pA) minimizes errors from source impedance. Its rail-to-rail input and output allow direct interfacing with ADCs. The wide supply range supports both 3.3 V and 5 V systems. The high PSRR rejects noise from switching regulators, ensuring accurate temperature readings. The extended temperature range is ideal for industrial process control.
Recommended
Battery-Powered Precision Circuits
The ADA4528-1ARMZ operates from 2.2 V to 5.5 V, making it ideal for battery-powered precision circuits. Its low supply current (1.5 mA) extends battery life in portable devices. The rail-to-rail input and output maximize dynamic range at low supply voltages. The zero-drift architecture ensures accuracy over the battery discharge curve. The device's small 8-MSOP package saves board space. Applications include portable instrumentation, field transmitters, and handheld meters.
Recommended
Weigh Scale
The ADA4528-1ARMZ is well-suited for weigh scale applications, where precision and stability are paramount. Its 2.5 µV offset and 0.015 µV/°C drift ensure accurate weight measurements over time and temperature. The device's low noise (97 nV p-p) allows resolution of small weight changes. The rail-to-rail output maximizes the ADC input range, improving resolution. The wide supply range supports both battery and line-powered scales. The extended temperature range ensures reliable operation in industrial environments.
Recommended
Recommended Products Summary
Engineering reference data for ADA4528-1ARMZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4528-2ARMZ | AD8571ARMZ | LTC2051CMS8#TRPBF |
|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Circuits | 1 | 2 | 1 | 2 |
| Input Offset Voltage | 2.5 µV | 2.5 µV | 1 µV | 0.5 µV |
| Input Offset Drift | 0.015 µV/°C | 0.015 µV/°C | 0.005 µV/°C | 0.01 µV/°C |
| Supply Voltage Range | 2.2 V to 5.5 V | 2.2 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Gain Bandwidth Product | 4 MHz | 4 MHz | 1.5 MHz | 3 MHz |
| Supply Current | 1.5 mA | 1.5 mA | 850 µA | 1 mA |
Key Differentiators
- Ultra-low offset voltage of 2.5 µV (vs LTC2051CMS8#TRPBF)
- Rail-to-rail input and output (vs AD8571ARMZ)
- Extended temperature range (vs LTC2051CMS8#TRPBF)
Design Notes
Bypass each supply pin with a 0.1 µF ceramic capacitor placed as close to the pin as possible. For best performance, use a 10 µF tantalum capacitor in parallel for low-frequency decoupling. The ADA4528-1 has excellent PSRR, but proper decoupling ensures optimal noise performance.
Keep the input traces short and shielded to minimize noise pickup. Use a ground plane under the device to reduce parasitic capacitance and improve stability. For high-impedance sensors, guard the input traces to prevent leakage currents.
Do not exceed the absolute maximum supply voltage of 6 V. The input common-mode range includes both rails, but avoid driving inputs beyond the rails. Ensure the output load does not exceed 30 mA to prevent thermal issues. For best offset performance, match the source impedance at both inputs.
Compliance Information
RoHS compliant per distributor data. Other compliance info not specified in verified data.
