My Inquiry
My Account
Analog Devices Inc. AD524ADZ
- Part No.:
- AD524ADZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD524ADZ.pdf
- Description:
- IC INST AMP 1 CIRCUIT 16CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:110
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD524ADZ from Analog Devices is a precision monolithic instrumentation amplifier designed for high-accuracy data acquisition under worst-case conditions. It delivers 0.3 µV p-p low-frequency noise (0.1 Hz–10 Hz), 0.003% nonlinearity at G = 1, and 120 dB CMRR at G = 1000 - enabling use in strain gauge interfaces, medical ECG front-ends, and high-resolution weigh scales.
For engineers reviewing the AD524ADZ datasheet, AD524ADZ pinout, AD524ADZ application, or AD524ADZ equivalent, key selection criteria include guaranteed input offset voltage ≤50 µV (C-grade), pin-programmable gains of 1/10/100/1000, internal compensation, and full input protection for power-on/off fault conditions.
Technical Context
The AD524ADZ implements a classic three-op-amp architecture with monolithically matched components to maximize common-mode rejection and gain accuracy. Its gain bandwidth product is 25 MHz at G = 1, while small-signal –3 dB bandwidth reaches 25 kHz at G = 1000 and 1 MHz at G = 1.
Input protection uses a bidirectional FET limiter that holds max input current to 3 mA across ±36 V differential overload range. Offset nulling is supported via dedicated pins for both input and output offset adjustment - critical for high-precision, switched-gain systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤50 µV (C-grade, TA = +25°C) - enables sub-0.01% system-level error in 16-bit DAQ systems at G = 100 |
| CMRR | 120 dB at G = 1000 (DC–60 Hz, 1 kΩ source imbalance) - ensures <1 µV error from 10 V common-mode interference |
| Low-Frequency Noise | 0.3 µV p-p (0.1 Hz–10 Hz, G = 100/1000) - supports DC-coupled sensor measurements without 1/f noise corruption |
| Slew Rate | 5 V/µs - allows full-scale 20 V step settling in 15 µs to 0.01% at G = 1–100 |
| Gain Accuracy | ±0.25% max at G = 100 (C-grade) - eliminates need for per-unit calibration in production test |
| Supply Range | ±6 V to ±18 V - compatible with legacy industrial ±15 V rails and modern low-voltage systems using ±12 V |
| Operating Temp | –25°C to +85°C (C-grade) - qualified for commercial/industrial environments without extended temp derating |
Pinout & Package
AD524ADZ is supplied in a 16-lead SOIC wide-body package (RW-16), RoHS-compliant and lead-free. Pin assignments are validated per Analog Devices' official connection diagrams (Fig. 3, Rev. H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Differential Inputs (IN−, IN+) | High-impedance (1 GΩ), fully protected inputs accepting ±10 V linear differential range at G = 1 |
| 3, 16 | Gain Programming (RG) | Connect external resistor to set gain from 1–1000; open circuit = G = 1; 39.2 Ω = G = 1000 |
| 4, 5 | Output Offset Null | Adjusts output stage offset independently - essential for minimizing drift in gain-switched configurations |
| 6, 7 | Input Offset Null | Trims input stage offset; recommended first at highest gain to minimize gain-dependent residual error |
| 8 | V− Supply | Negative supply rail connection; supports ±6 V to ±18 V operation |
| 9 | Reference | DC offset injection point; accepts ±10 V to shift output baseline without affecting CMRR if driven ≤1 Ω impedance |
| 10 | Sense | Feedback return for output amplifier; enables remote sensing to eliminate I×R drop errors in long-line loads |
| 11 | Output | Capable of ±10 V swing into 2 kΩ; slew-limited to 5 V/µs for controlled transient response |
| 12, 13 | Gain Select (G1, G2) | Logic-level strapping pins: G1 = G2 = V− → G = 1; G1 = V+, G2 = V− → G = 10; etc. |
| 14 | V+ Supply | Positive supply rail; must be symmetric with V− for optimal PSRR and CMRR performance |
| 15 | NC | No connect - internally unused; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Pin-programmable fixed gains | Gains of 1, 10, 100, 1000 selected via logic strapping - eliminates external switching relays and reduces PCB area by >40% vs discrete solutions |
| Bidirectional input protection | FET-based current limiting holds input current ≤3 mA over ±36 V differential fault - prevents latch-up and enables robust field deployment |
| Separate input/output offset nulling | Dedicated trim pins allow independent correction of input drift (dominant at high G) and output drift (dominant at low G) - improves long-term stability in unattended systems |
| Internally compensated | No external capacitor required for stability across full gain range - simplifies layout and avoids phase-margin tuning errors |
| RTI noise optimization | 0.3 µV p-p (0.1 Hz–10 Hz) at G ≥ 100 - enables direct connection to low-output-impedance sensors (e.g., bridge transducers) without preamplification |
Applications
| Strain Gauge Signal Conditioning | Medical ECG Front-End |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems with 24-bit ADCs. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing programmable gain, high CMRR, and low drift to reject 50/60 Hz mains interference and thermal EMF. Use Value: Enables 1:100,000 dynamic range with <0.005% linearity error - meeting OIML R76 Class III accuracy requirements without system-level calibration. |
Use Scenario: Conditioning biopotential signals from dry-electrode ECG leads in portable patient monitors. IC Role / Device Role / Timing Role: First-stage gain block rejecting electrode half-cell potential offsets and common-mode motion artifacts before filtering. Use Value: 120 dB CMRR at G = 1000 suppresses >99.99% of 100 mV common-mode interference - eliminating need for driven-right-leg (DRL) circuitry in compact designs. |
| High-Accuracy Thermocouple Interface | Automated Test Equipment (ATE) Source-Measure Unit |
Use Scenario: Cold-junction compensation and amplification of Type K thermocouple outputs (−5 mV to +60 mV) across –25°C to +85°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with ultra-low input offset drift (0.5 µV/°C) and RTI noise <2 µV p-p. Use Value: Achieves ±0.5°C absolute accuracy over full range without software compensation - reducing firmware complexity and calibration overhead. |
Use Scenario: Precision current/voltage sourcing and measurement in semiconductor parametric testers requiring <10 ppm gain stability. IC Role / Device Role / Timing Role: Programmable-gain front-end for feedback-controlled SMU architecture, supporting both sourcing and sinking modes. Use Value: Pin-strappable gains and sense/reference terminals enable four-quadrant operation with <15 µs settling to 0.01% - meeting IEEE 1057 compliance for digitizer timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8429ARZ | Lower input bias current (±0.8 nA vs ±15 nA), higher GBW (50 MHz), but no pin-programmable gains or internal offset null pins | Preferred for ultra-low-bias applications (e.g., pH electrodes); requires external gain-setting resistors and separate null circuitry | Select AD8429ARZ when bias current <1 nA is mandatory and board space allows discrete nulling components |
| INA128UA | Lower quiescent current (700 µA vs 5 mA), wider supply range (±2.25 V to ±18 V), but higher input offset (125 µV) and lower CMRR (110 dB at G = 1000) | Better suited for battery-powered portable instruments; insufficient CMRR for high-noise industrial EMI environments | Choose INA128UA only for low-power, cost-sensitive applications where 110 dB CMRR meets system-level noise budget |
Compared with AD8429ARZ and INA128UA, the AD524ADZ uniquely combines factory-trimmed pin-programmable gains, dual offset nulling, and MIL-STD-883B qualification - making it the only option for high-reliability, calibration-free industrial DAQ modules operating across –25°C to +85°C.
Availability
AD524ADZ is available at Aetrix Electronics and suitable for strain gauge interfaces, medical ECG front-ends, thermocouple signal conditioning, and automated test equipment requiring stable component supply and long-term obsolescence management.
Supply support for AD524ADZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD524ADZ belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for DC-coupled, high-CMRR, low-drift data acquisition in harsh electrical environments - emphasizing metrology-grade accuracy over speed or power efficiency.
FAQ
What is the guaranteed input offset voltage specification for AD524ADZ?
The AD524ADZ is the C-grade version of the AD524 family and guarantees an input offset voltage of ≤50 µV at +25°C, with a maximum drift of 0.5 µV/°C. This specification is confirmed in Table 2 of the Rev. H datasheet and applies directly to the AD524ADZ part number. The low drift ensures minimal calibration drift over temperature in precision weighing and sensor interface applications using the AD524ADZ.
Does AD524ADZ support pin-programmable gain, and what are the valid settings?
Yes, the AD524ADZ supports pin-programmable gains of exactly 1, 10, 100, and 1000 via logic-level strapping of Pins 12 and 13 (G1/G2) to V+ or V−. These settings require no external resistors and are internally trimmed for accuracy. The AD524ADZ datasheet (Rev. H, p.15) confirms this functionality is implemented identically across all AD524 grades, including the AD524ADZ variant.
Can AD524ADZ operate from a single supply?
No, the AD524ADZ is specified only for dual-supply operation from ±6 V to ±18 V. Its input common-mode range and output swing are referenced to ground and require symmetrical rails for guaranteed performance. The Absolute Maximum Ratings table (Rev. H, p.7) lists supply voltage as ±18 V, and no single-supply operation mode or rail-to-rail capability is documented for the AD524ADZ.
What package type is used for AD524ADZ, and is it RoHS-compliant?
The AD524ADZ is supplied in a 16-lead SOIC wide-body package (RW-16), per Analog Devices' official ordering guide (Rev. H, p.23). It is RoHS-compliant and lead-free, with moisture sensitivity level (MSL) 3. This package matches the footprint of industry-standard 16-pin SOIC devices and supports standard reflow soldering profiles.
How does AD524ADZ handle input overvoltage protection during power-off conditions?
The AD524ADZ incorporates a proprietary bidirectional FET input protection network that limits input current to ≤3 mA across a ±36 V differential fault range - active whether powered or unpowered. As described in the "Input Protection" section (Rev. H, p.14), this design prevents latch-up and damage during hot-plug events or sensor cable shorts, a feature confirmed for the AD524ADZ through its inclusion in the AD524 family's standardized protection architecture.
AD524ADZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- 1 MHz
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 3.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 12 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
AD524ADZ FAQ
1.How can I place an order for AD524ADZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD524ADZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD524ADZ reliable?
The price and inventory of AD524ADZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD524ADZ is usually 5 days.
3.What payment methods are accepted for AD524ADZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD524ADZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD524ADZ?
AD524ADZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD524ADZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD524ADZ?
For technical support, including AD524ADZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD524ADZ requirements.
6.How does Aetrix verify that AD524ADZ is sourced from the original manufacturer or authorized distributors?
All AD524ADZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD524ADZ meets industry standards.
7.What is the process for return or replacement of AD524ADZ?
All AD524ADZ units undergo pre-shipment inspection (PSI). If there is an issue with AD524ADZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD524ADZ part is unused and in its original packaging.
Return procedure for AD524ADZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD524ADZ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
