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Analog Devices Inc. ADA4523-1BRZ-RL7
- Part No.:
- ADA4523-1BRZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4523-1BRZ-RL7.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:816
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Product details
Overview
ADA4523-1BRZ-RL7 from Analog Devices is a 36 V, rail-to-rail output, zero-drift operational amplifier optimized for precision dc-coupled signal conditioning. It delivers ±4 µV max offset voltage, 0.01 µV/°C max drift, 88 nV p-p 0.1 Hz–10 Hz input noise, 168 dB PSRR, and shutdown mode - enabling high-resolution thermocouple amplification and reference buffering in industrial instrumentation.
For engineers reviewing the ADA4523-1BRZ-RL7 datasheet, ADA4523-1BRZ-RL7 pinout, ADA4523-1BRZ-RL7 application, or ADA4523-1BRZ-RL7 equivalent, this page provides verified package mapping (8-lead SOIC_N), validated pin functions, confirmed EMI rejection performance (up to 140 dB at 900 MHz), and two rigorously cross-checked alternative op amps with documented functional trade-offs.
Technical Context
The ADA4523-1BRZ-RL7 employs auto-zeroing with internal chopper stabilization at 330 kHz to suppress 1/f noise and drift while maintaining unity-gain stability. Its input stage includes integrated EMI filters and ground-sense capability (V− − 0.1 V to V+ − 1.5 V common-mode range), supporting low-side current sensing without level-shifting.
Shutdown control uses differential SD/SDCOM inputs with defined thresholds (0.8 V low, 2 V high) and sub-µA quiescent current in shutdown (≤7.5 µA at +125°C). The architecture achieves 160 dB CMRR over ±15 V supplies and maintains rail-to-rail output swing with <20 mV drop at 1 mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 36 V - supports single-supply (5 V, 12 V, 24 V) and dual-supply (±2.5 V to ±15 V) operation in industrial power rails. |
| Offset Voltage (max) | ±4 µV at 5 V - enables sub-16-bit accuracy in 24-bit data acquisition systems without calibration. |
| Offset Drift (max) | 0.01 µV/°C - ensures <±0.1 µV total drift over −40°C to +125°C, critical for unattended field instrumentation. |
| Input Noise (0.1–10 Hz) | 88 nV p-p - allows resolution of microvolt-level signals from strain gages and thermocouples without external filtering. |
| PSRR / CMRR | 168 dB / 160 dB - rejects supply ripple and common-mode interference in noisy PLC and motor drive environments. |
| Gain Bandwidth | 5 MHz - sufficient for closed-loop gain ≥100 with >50 kHz bandwidth in precision sensor interfaces. |
| Shutdown Current | ≤7.5 µA at +125°C - enables low-power wake-on-event architectures in battery-backed measurement nodes. |
Pinout & Package
ADA4523-1BRZ-RL7 is packaged in an 8-lead SOIC_N (R-8) with exposed pad not present; pin 5 (NIC) is unconnected. Thermal resistance θJA = 120°C/W enables operation up to +125°C ambient with standard PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown Control Input | Differential logic input referenced to SDCOM; asserts shutdown when SD − SDCOM < 0.8 V. |
| 2 (−IN) | Inverting Input | High-impedance (100 GΩ common-mode) node for feedback networks; supports ground-sense operation. |
| 3 (+IN) | Noninverting Input | Low-bias-current (≤300 pA) input for high-Z sensor sources like thermocouples and pH electrodes. |
| 4 (V−) | Negative Supply Rail | Reference for internal biasing; must be connected to system ground or negative rail in dual-supply designs. |
| 5 (NIC) | No Internal Connection | Unused pin; electrically isolated - no routing or thermal tie required on PCB. |
| 6 (OUT) | Amplifier Output | Rail-to-rail capable; drives ≤5 mA load with <200 mV saturation at ±15 V supply. |
| 7 (V+) | Positive Supply Rail | Accepts up to +36 V; powers internal EMI filters and auto-zero circuitry. |
| 8 (SDCOM) | Shutdown Reference | Common-mode reference for SD pin; must be biased within −2.5 V to +0.15 V (5 V supply) or −15 V to +12.65 V (30 V supply). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated EMI Filters | 80–140 dB rejection from 400 MHz–2.4 GHz - eliminates need for external RF shielding in EMC-critical test equipment. |
| Zero-Drift Architecture | 0.01 µV/°C max drift - removes thermal calibration requirement in portable calibrators and metrology standards. |
| Rail-to-Rail Output | <20 mV headroom at 1 mA load - maximizes dynamic range in 3.3 V or 5 V ADC front-ends. |
| Ground-Sense Input | VCM extends to V− − 0.1 V - enables direct low-side current sensing without sense-resistor level shifting. |
| Shutdown Mode | 7.5 µA max IQ at +125°C - reduces system standby power in battery-operated weigh scales and handheld DMMs. |
Applications
| Thermocouple Amplification | Reference Buffering |
|---|---|
|
Use Scenario: Amplifying µV-level outputs from Type K/J thermocouples in furnace controllers with ambient temperature ranging −20°C to +85°C. IC Role / Device Role / Timing Role: Precision dc-coupled gain stage with cold-junction compensation interface and EMI-hardened input. Use Value: 88 nV p-p input noise and 0.01 µV/°C drift ensure ±0.1°C measurement accuracy without software correction. |
Use Scenario: Buffering ADR4525 2.5 V reference for 24-bit SAR ADCs in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, high-PSRR unity-gain follower isolating reference from ADC switching transients. Use Value: 168 dB PSRR prevents supply noise from modulating reference voltage, preserving ENOB in high-speed digitization. |
| Electronic Scales | Strain Gage Signal Conditioning |
|
Use Scenario: Front-end amplification for full-bridge load cells in commercial weighing platforms operating at 25°C ±15°C. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with matched input impedance and ultra-low drift. Use Value: ±4 µV offset and rail-to-rail output enable full-scale utilization of 20-bit delta-sigma ADCs without zero-span adjustment. |
Use Scenario: Signal conditioning for quarter-bridge strain gages in structural health monitoring sensors deployed outdoors. IC Role / Device Role / Timing Role: High-CMRR, low-input-bias amplifier driving anti-alias filter before sigma-delta conversion. Use Value: 160 dB CMRR rejects common-mode noise from long cable runs; 100 GΩ input resistance prevents gage resistance loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-1ARZ | Lower supply range (3.0–36 V); same 0.01 µV/°C drift but higher 0.1–10 Hz noise (120 nV p-p). | Lacks integrated EMI filters; requires external RF suppression in cellular base station test gear. | Preferred where cost sensitivity outweighs EMI immunity needs and supply can be ≥3.0 V. |
| LTC2057IMS8#PBF | Wider supply (2.7–12 V); lower quiescent current (1.2 mA vs. 4.8 mA) but higher offset drift (0.03 µV/°C). | Not rated for 36 V operation; unsuitable for 24 V industrial bus-powered modules. | Select when operating from 3.3 V/5 V rails and ultra-low power dominates over long-term drift stability. |
Compared with ADA4523-1BRZ-RL7, ADA4522-1ARZ trades EMI robustness for broader voltage compatibility, while LTC2057IMS8#PBF sacrifices high-voltage operation and drift performance for lower static power - making ADA4523-1BRZ-RL7 optimal for 12–24 V industrial sensors demanding metrology-grade stability.
Availability
ADA4523-1BRZ-RL7 is available at Aetrix Electronics and suitable for high-resolution data acquisition, electronic scales, thermocouple amplifiers, and strain gage interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4523-1BRZ-RL7 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 ADA4523-1BRZ-RL7 belongs to Analog Devices' precision zero-drift op amp family, engineered specifically for DC-accurate signal chains in test & measurement, industrial process control, and scientific instrumentation where offset, drift, and noise directly limit measurement fidelity.
FAQ
What is the maximum supply voltage rating for the ADA4523-1BRZ-RL7?
The ADA4523-1BRZ-RL7 has an absolute maximum supply voltage of 40 V (V+ to V−), with recommended operating range from 4.5 V to 36 V. Operation beyond 36 V risks exceeding internal junction temperature limits even at room ambient, especially under load - always observe derating curves in the datasheet's thermal resistance table (θJA = 120°C/W for SOIC_N).
Does the ADA4523-1BRZ-RL7 require external capacitors for stability?
No, the ADA4523-1BRZ-RL7 is unity-gain stable and does not require external compensation capacitors. Its internal architecture ensures phase margin >60° across all gains and loads up to 200 pF, as verified in Figures 26–27 of the datasheet. However, a 100 nF bypass capacitor per supply rail near the device is mandatory for EMI filter effectiveness and PSRR performance.
How does the shutdown function operate on the ADA4523-1BRZ-RL7?
The ADA4523-1BRZ-RL7 uses a differential shutdown pair: SD (pin 1) and SDCOM (pin 8). Shutdown activates when SD − SDCOM falls below 0.8 V (typical), reducing supply current to ≤7.5 µA. SDCOM must be biased within its specified range (e.g., −2.5 V to +0.15 V at 5 V supply); it is not tied to ground by default. Full recovery time after exit is <10 µs (Figure 28).
Can the ADA4523-1BRZ-RL7 drive ADC inputs directly?
Yes - the ADA4523-1BRZ-RL7's rail-to-rail output, low output impedance (<1 Ω at dc), and 1.8 V/µs slew rate make it suitable for driving SAR and sigma-delta ADC inputs. For 24-bit converters, use a 1–10 Ω series resistor between ADA4523-1BRZ-RL7 OUT and ADC IN to dampen charge kickback; verify settling time meets acquisition window (see Figure 57–58 for transient response).
Is the ADA4523-1BRZ-RL7 pin-compatible with other zero-drift op amps?
No - the ADA4523-1BRZ-RL7's SD/SDCOM shutdown interface and NIC pin (pin 5) differ from industry-standard 8-lead SOIC op amps like OP177 or AD8628. While footprint matches SOIC-8, the pin functions are unique: pins 1 and 8 are dedicated shutdown controls, not NC or offset null. PCB layout must follow Figure 3 exactly.
ADA4523-1BRZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADA4523
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.85V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 125 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 4.5mA
- Current - Output / Channel:
- 36 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4523-1BRZ-RL7 FAQ
1.How can I place an order for ADA4523-1BRZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4523-1BRZ-RL7 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 ADA4523-1BRZ-RL7 reliable?
The price and inventory of ADA4523-1BRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4523-1BRZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADA4523-1BRZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4523-1BRZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4523-1BRZ-RL7?
ADA4523-1BRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4523-1BRZ-RL7 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 ADA4523-1BRZ-RL7?
For technical support, including ADA4523-1BRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4523-1BRZ-RL7 requirements.
6.How does Aetrix verify that ADA4523-1BRZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADA4523-1BRZ-RL7 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 ADA4523-1BRZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADA4523-1BRZ-RL7?
All ADA4523-1BRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4523-1BRZ-RL7, 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 ADA4523-1BRZ-RL7 part is unused and in its original packaging.
Return procedure for ADA4523-1BRZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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