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Analog Devices Inc. ADA4523-1BRMZ
- Part No.:
- ADA4523-1BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4523-1BRMZ.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,862
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Product details
Overview
ADA4523-1BRMZ from Analog Devices is a 36 V, rail-to-rail output, zero-drift operational amplifier optimized for precision DC signal conditioning in high-dynamic-range systems. It delivers ±4 µV max offset voltage, 0.01 µV/°C max drift, 88 nV p-p (0.1–10 Hz) input noise, and 168 dB PSRR - enabling high-resolution thermocouple amplification and reference buffering in industrial instrumentation.
For engineers reviewing the ADA4523-1BRMZ datasheet, ADA4523-1BRMZ pinout, ADA4523-1BRMZ application, or ADA4523-1BRMZ equivalent, this page provides verified pin functions, real-world application context for low-side current sense and strain gage interfaces, and validated alternative options with documented functional trade-offs.
Technical Context
The ADA4523-1BRMZ employs auto-zeroing + chopper stabilization to suppress 1/f noise and thermal drift while maintaining unity-gain stability. Its dual-stage correction architecture achieves <1 µV rms ripple at 330 kHz internal chopping frequency, with integrated EMI filters providing >80 dB rejection at 400–2400 MHz.
Input common-mode range extends to V− − 0.1 V and V+ − 1.5 V, supporting ground-sense operation; shutdown mode reduces supply current to 4.5–15 µA while preserving rail-to-rail output swing and CMRR ≥140 dB across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 36 V - supports single-supply 5 V or dual-supply ±15 V operation without external level-shifting. |
| Offset Voltage (max) | ±4 µV at 5 V - enables sub-16-bit accuracy in 24-bit data acquisition without calibration. |
| Offset Drift (max) | 0.01 µV/°C - ensures <0.1 µV total drift over 85°C ambient range, critical for unattended test equipment. |
| Input Noise (0.1–10 Hz) | 88 nV p-p - allows resolution of <100 nV-level signals in electronic scales and precision weighbridges. |
| Gain Bandwidth Product | 5 MHz - sufficient for closed-loop gain ≥100 at 50 kHz, suitable for anti-aliasing filter drivers. |
| PSRR / CMRR | 168 dB / 160 dB - rejects power supply ripple and common-mode interference in noisy industrial environments. |
| Shutdown Current | 4.5 µA typical - enables ultra-low-power sleep modes in battery-backed measurement nodes. |
Pinout & Package
ADA4523-1BRMZ is packaged in an 8-lead SOIC_N (R-8) with exposed pad not present; pin 5 (NIC) is unconnected internally and must be left floating or grounded per layout best practice.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown control input | Active-high enable; requires SD − SDCOM ≥2 V to exit shutdown; compatible with 3.3 V logic. |
| 2 (−IN) | Inverting input | High-impedance node (100 GΩ common-mode RIN); accepts signals down to V− − 0.1 V for ground-referenced sensing. |
| 3 (+IN) | Noninverting input | Matches −IN in bias current (≤300 pA) and voltage noise; enables precision differential configurations. |
| 4 (V−) | Negative supply rail | Reference for internal ESD clamps and shutdown comparator; exposed pad (if present) connects here. |
| 5 (NIC) | Not internally connected | No internal bond wire; may be used as thermal relief or grounded to reduce parasitic capacitance. |
| 6 (OUT) | Amplifier output | Rail-to-rail swing (≤20 mV from rails at 1 mA); drives 10 kΩ loads with <0.001% THD+N at 1 kHz. |
| 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 | Provides bias for SD threshold; operates from −15 V to +12.65 V - enables bipolar shutdown control. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Combines auto-zero and chopper stages to eliminate 1/f noise and thermal drift without idle tones >1 µV rms. |
| Integrated EMI filtering | On-chip RC networks provide >80 dB rejection at cellular bands (900/1800/2400 MHz), eliminating external ferrites. |
| Rail-to-rail output + ground sense | Output swings within 20 mV of V−/V+; input includes V− rail - enables direct low-side current shunt amplification. |
| Wide supply range + high PSRR | Operates from 4.5 V to 36 V with 168 dB PSRR - maintains precision under varying or noisy supply conditions. |
| Shutdown mode with fast wake-up | Reduces quiescent current to 4.5 µA; transitions from shutdown to full operation in <40 µs (Fig. 28–29). |
Applications
| High-Resolution Data Acquisition | Reference Buffering |
|---|---|
|
Use Scenario: Digitizing microvolt-level sensor outputs (e.g., thermocouples, RTDs) in 24-bit ΣΔ ADC front-ends. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low drift and noise to preserve ENOB. Use Value: Enables <1 ppm linearity error over temperature without system recalibration. |
Use Scenario: Isolating and driving high-accuracy voltage references (e.g., LTC6655-5) into capacitive ADC inputs. IC Role / Device Role / Timing Role: Low-output-impedance buffer with 160 dB CMRR to reject board-level coupling. Use Value: Prevents reference droop during ADC sampling bursts, ensuring <0.5 ppm LSB stability. |
| Electronic Scales & Weighbridges | Strain Gage Signal Conditioning |
|
Use Scenario: Amplifying mV-level bridge outputs from load cells in legal-for-trade weighing systems. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with matched input bias currents. Use Value: Achieves <100,000 d resolution with <0.005% span drift over 10-year field life. |
Use Scenario: Conditioning quarter-bridge outputs in structural health monitoring sensors. IC Role / Device Role / Timing Role: Low-noise, high-CMRR amplifier with EMI-hardened inputs for outdoor deployment. Use Value: Maintains 120 dB dynamic range despite RF interference from nearby wireless gateways. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-1ARMZ | Same zero-drift architecture but lower max supply (±18 V), higher noise (120 nV p-p), no shutdown pin. | Lacks shutdown mode and 36 V rating - unsuitable for wide-input industrial supplies or power-gated systems. | Select when cost sensitivity outweighs need for shutdown or extended voltage range. |
| AD8628ARZ | Auto-zero only (no chopper), 130 nV p-p noise, 2.7–36 V supply, no EMI filters, no shutdown. | Higher low-frequency noise and no integrated EMI rejection - requires external filtering in RF-rich environments. | Choose for simpler designs where EMI immunity is managed at PCB level and ultra-low 0.1–10 Hz noise is secondary. |
Compared with ADA4522-1ARMZ and AD8628ARZ, the ADA4523-1BRMZ uniquely combines 36 V operation, active shutdown, and on-chip EMI filtering - making it the only option among the three qualified for unattended, wide-supply, RF-immune precision measurement nodes.
Availability
ADA4523-1BRMZ is available at Aetrix Electronics and suitable for high-resolution data acquisition, reference buffering, and electronic scale applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADA4523-1BRMZ 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 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.
FAQ
What is the maximum supply voltage rating for the ADA4523-1BRMZ?
The ADA4523-1BRMZ 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 at 36 V enables direct interface with industrial 24 V rails and legacy ±15 V systems without regulation - a key advantage over lower-voltage precision op amps like the ADA4522-1.
Does the ADA4523-1BRMZ require external EMI filtering components?
No. The ADA4523-1BRMZ integrates on-chip EMI filters that deliver >80 dB rejection at 400 MHz and >140 dB at 900 MHz (per Figure 59), eliminating the need for external ferrite beads or RC networks typically required with standard op amps in cellular-band-noisy environments.
How does the shutdown feature of the ADA4523-1BRMZ function electrically?
The ADA4523-1BRMZ uses a differential shutdown interface: applying SD − SDCOM ≥2 V (with SDCOM referenced between −15 V and +12.65 V) exits shutdown, reducing supply current from 4.5 mA to 4.5 µA. This two-pin architecture avoids ground-reference constraints found in single-pin shutdown op amps.
Can the ADA4523-1BRMZ drive heavy capacitive loads without instability?
Yes - the ADA4523-1BRMZ remains stable driving ≥200 pF loads (Figure 52–53), and its output impedance drops below 1 Ω at DC (Figure 30–31). For >1 nF loads, a series resistor (5–20 Ω) is recommended per Figure 56 to maintain phase margin without sacrificing bandwidth.
Is pin 5 (NIC) on the ADA4523-1BRMZ required to be grounded or left floating?
Pin 5 (NIC) is Not Internally Connected and has no internal bond. Per Analog Devices' layout guidance (Page 26), it may be left floating or connected to V− for improved thermal dissipation and reduced parasitic capacitance - but must never be tied to signal or supply nets.
ADA4523-1BRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADA4523
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.8V/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 FAQ
1.How can I place an order for ADA4523-1BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4523-1BRMZ 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 reliable?
The price and inventory of ADA4523-1BRMZ 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 is usually 5 days.
3.What payment methods are accepted for ADA4523-1BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4523-1BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4523-1BRMZ?
ADA4523-1BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4523-1BRMZ 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?
For technical support, including ADA4523-1BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4523-1BRMZ requirements.
6.How does Aetrix verify that ADA4523-1BRMZ is sourced from the original manufacturer or authorized distributors?
All ADA4523-1BRMZ 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 meets industry standards.
7.What is the process for return or replacement of ADA4523-1BRMZ?
All ADA4523-1BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4523-1BRMZ, 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 part is unused and in its original packaging.
Return procedure for ADA4523-1BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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