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Analog Devices Inc. ADA4523-1BRMZ-RL7
- Part No.:
- ADA4523-1BRMZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4523-1BRMZ-RL7.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
ADA4523-1BRMZ-RL7 from Analog Devices is a 36 V, low-noise, zero-drift operational amplifier with ±4 µV max offset voltage, 0.01 µV/°C max drift, 4.2 nV/√Hz input voltage noise density at 1 kHz, rail-to-rail output, and integrated EMI filters. It operates from 4.5 V to 36 V and delivers precision signal conditioning in high-resolution data acquisition and thermocouple amplifier circuits.
For engineers reviewing the ADA4523-1BRMZ-RL7 datasheet, ADA4523-1BRMZ-RL7 pinout, ADA4523-1BRMZ-RL7 application, or ADA4523-1BRMZ-RL7 equivalent, key selection criteria include ultra-low offset drift, sub-100 nV p-p 0.1 Hz–10 Hz noise, shutdown mode control, ground-sense input range, and SOIC_N package compatibility for industrial instrumentation layouts.
Technical Context
The ADA4523-1BRMZ-RL7 employs auto-zeroing and chopper stabilization with a 330 kHz internal chopping frequency to suppress 1/f noise and drift while minimizing idle tone artifacts (<1 µVrms ripple). Its input stage includes EMI filtering on the +IN pin, delivering up to 140 dB EMI rejection at 900 MHz.
It features dual-stage shutdown control (SD and SDCOM pins), enabling precise bias current reduction to 4.5–6 µA active and 4.5–7.5 µA shutdown across −40°C to +125°C. Input common-mode range extends from V− − 0.1 V to V+ − 1.5 V, supporting ground-sense operation in low-side current sensing.
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) industrial systems without rail translation. |
| Offset Voltage (max) | ±4 µV at 5 V - enables direct interface with 24-bit ADCs without calibration in precision reference buffering. |
| Offset Drift (max) | 0.01 µV/°C - ensures <±0.3 µV total drift over −40°C to +85°C, critical for unattended test equipment. |
| Input Noise (0.1–10 Hz) | 88 nV p-p - allows resolution of sub-microvolt signals in electronic scales and strain gage bridges. |
| Gain Bandwidth Product | 5 MHz - provides stable unity-gain operation with >60° phase margin into 10 kΩ || 100 pF loads. |
| PSRR / CMRR | 168 dB / 160 dB - rejects supply and common-mode interference in noisy factory environments. |
| EMI Rejection Ratio | 140 dB at 900 MHz - maintains signal integrity near RF sources like motor drives or wireless transceivers. |
Pinout & Package
ADA4523-1BRMZ-RL7 is packaged in an 8-lead SOIC_N (R-8) with exposed pad not present; pin 5 (NIC) is not internally connected and must be left floating or grounded per layout best practice.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown Control Input | Active-high logic input referenced to SDCOM; transitions amplifier between 4.8 mA active and 6 µA shutdown states. |
| 2 (−IN) | Inverting Input | Differential input node with 100 GΩ common-mode resistance and 20 pF capacitance; requires symmetric layout for EMI immunity. |
| 3 (+IN) | Noninverting Input | EMI-filtered input with dedicated on-chip RC network; connects to low-impedance reference or sensor sources. |
| 4 (V−) | Negative Supply Rail | Ground-sense capability down to V− − 0.1 V enables true single-supply operation with 0 V input common-mode. |
| 5 (NIC) | Not Internally Connected | No internal bond; may be tied to V− or left unconnected-no electrical function or thermal benefit. |
| 6 (OUT) | Amplifier Output | Rail-to-rail output capable of sourcing/sinking 25 mA; settles within 5 µs to 0.01% for 10 V step with 10 kΩ load. |
| 7 (V+) | Positive Supply Rail | Supports up to 36 V total supply; PSRR remains >140 dB across full 4.5–36 V range. |
| 8 (SDCOM) | Shutdown Reference | Reference node for SD threshold; 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 |
|---|---|
| Zero-drift architecture | Combines auto-zero and chopper techniques to eliminate 1/f noise and achieve <±0.3 µV total drift over temperature and time. |
| Integrated EMI filters | On-chip RC network on +IN pin provides >80 dB rejection from 400 MHz to 2.4 GHz, eliminating external ferrite beads. |
| Rail-to-rail output | Swings within 10 mV of rails at 1 mA load, enabling full dynamic range utilization with 24-bit SAR or delta-sigma ADCs. |
| Ground-sense input | Input common-mode range includes V− rail (down to V− − 0.1 V), allowing direct connection to shunt resistors in low-side current sensing. |
| Shutdown mode | Reduces quiescent current to <7.5 µA while preserving input bias stability-ideal for battery-powered portable instrumentation. |
Applications
| High-Resolution Data Acquisition | Reference Buffering |
|---|---|
Use Scenario: Digitizing microvolt-level outputs from 350 Ω strain gages in structural health monitoring systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 100× amplification before 24-bit sigma-delta ADC sampling at 10 kSPS. Use Value: 88 nV p-p 0.1–10 Hz noise and ±4 µV offset ensure <0.001% measurement error without system-level calibration. | Use Scenario: Buffering ADR4525 2.5 V reference for multiple ADCs and DACs in automated test equipment. IC Role / Device Role / Timing Role: Low-output-impedance voltage follower with 160 dB open-loop gain and 168 dB PSRR. Use Value: Maintains reference accuracy to ±0.5 ppm over temperature and line regulation, preventing gain drift in multi-channel systems. |
| Thermocouple Amplifiers | Electronic Scales |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouples in industrial ovens (−50°C to +1200°C). IC Role / Device Role / Timing Role: First-stage amplifier with programmable gain and integrated cold-junction sensor interface. Use Value: 0.01 µV/°C drift eliminates need for frequent recalibration; EMI filtering rejects furnace switching noise. | Use Scenario: Amplifying mV-level bridge outputs from 10 kg load cells in retail weighing platforms. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier front-end with 500× gain and 5 V supply. Use Value: 88 nV p-p noise enables 1 mg resolution at 10 kg full scale; rail-to-rail output drives ADC input directly. |
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-R7 | Lower supply voltage ceiling (±18 V max), 3.5 nV/√Hz noise, no integrated EMI filter on +IN. | Better suited for lower-voltage, ultra-low-noise lab instruments where EMI is controlled externally. | Select when operating ≤36 V is unnecessary and EMI environment is benign; otherwise ADA4523-1BRMZ-RL7 offers superior robustness. |
| LTC2057IMS8#PBF | Wider offset drift spec (±0.03 µV/°C), higher 1/f noise corner (~10 Hz), no shutdown mode. | Preferred for high-speed zero-drift applications requiring >10 MHz GBW but less demanding on long-term drift. | Choose only if shutdown functionality and sub-100 nV p-p noise are non-critical; ADA4523-1BRMZ-RL7 delivers tighter DC specs. |
Compared with ADA4522-1ARZ-R7 and LTC2057IMS8#PBF, ADA4523-1BRMZ-RL7 uniquely combines 36 V operation, integrated EMI filtering, shutdown control, and the lowest published offset drift (0.01 µV/°C), making it optimal for uncalibrated, field-deployed instrumentation.
Availability
ADA4523-1BRMZ-RL7 is available at Aetrix Electronics and suitable for high-resolution data acquisition, thermocouple amplification, reference buffering, and electronic scale designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4523-1BRMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADA4523-1 product line targets precision DC-critical applications-including industrial automation, test equipment, and medical instrumentation-where ultra-low drift, low noise, and EMI resilience are mandatory.
FAQ
What is the maximum supply voltage rating for the ADA4523-1BRMZ-RL7?
The ADA4523-1BRMZ-RL7 has an absolute maximum supply voltage rating of 40 V (V+ to V−), with recommended operating range from 4.5 V to 36 V. Operation beyond 36 V risks exceeding safe junction temperature limits under load, especially in SOIC_N packages with θJA = 120°C/W. Always observe derating curves in the datasheet thermal section.
Does the ADA4523-1BRMZ-RL7 require external EMI filtering components?
No, the ADA4523-1BRMZ-RL7 integrates dedicated EMI filtering on its +IN pin, providing >80 dB rejection from 400 MHz to 2.4 GHz. This eliminates the need for external RC networks or ferrite beads in most industrial environments, simplifying layout and reducing BOM count while maintaining signal fidelity.
How does the shutdown mode affect input bias current in the ADA4523-1BRMZ-RL7?
In shutdown mode, the ADA4523-1BRMZ-RL7 reduces supply current to 4.5–7.5 µA but maintains stable input bias current (IB ≈ 100–600 pA) and offset voltage-no significant shift occurs during entry/exit. This allows seamless power cycling in portable instrumentation without recalibration overhead.
Can the ADA4523-1BRMZ-RL7 drive capacitive loads up to 100 pF without instability?
Yes, the ADA4523-1BRMZ-RL7 is unity-gain stable and maintains >60° phase margin driving 100 pF loads with 10 kΩ series resistance, as verified in Figure 56 of the datasheet. For direct 100 pF capacitive loads (no series R), add a 5 Ω isolation resistor to ensure overshoot remains <10%.
What is the function of the NIC pin (Pin 5) on the ADA4523-1BRMZ-RL7?
Pin 5 (NIC) on the ADA4523-1BRMZ-RL7 is Not Internally Connected-no bond wire or circuitry links it to die. It may be left floating or tied to V− for mechanical stability; it provides no electrical function, thermal path, or EMI benefit. Do not route signals or decoupling to this pin.
ADA4523-1BRMZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADA4523
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
ADA4523-1BRMZ-RL7 FAQ
1.How can I place an order for ADA4523-1BRMZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4523-1BRMZ-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 ADA4523-1BRMZ-RL7 reliable?
The price and inventory of ADA4523-1BRMZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4523-1BRMZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADA4523-1BRMZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4523-1BRMZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4523-1BRMZ-RL7?
ADA4523-1BRMZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4523-1BRMZ-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 ADA4523-1BRMZ-RL7?
For technical support, including ADA4523-1BRMZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4523-1BRMZ-RL7 requirements.
6.How does Aetrix verify that ADA4523-1BRMZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADA4523-1BRMZ-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 ADA4523-1BRMZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADA4523-1BRMZ-RL7?
All ADA4523-1BRMZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4523-1BRMZ-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 ADA4523-1BRMZ-RL7 part is unused and in its original packaging.
Return procedure for ADA4523-1BRMZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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