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Analog Devices Inc. ADA4523-1BRZ
- Part No.:
- ADA4523-1BRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4523-1BRZ.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:395
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Product details
Overview
ADA4523-1BRZ from Analog Devices is a 36 V, low-noise, 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 Hz to 10 Hz) input noise, rail-to-rail output swing, and integrated EMI filtering - enabling accurate thermocouple amplification and reference buffering in industrial instrumentation.
For engineers reviewing the ADA4523-1BRZ datasheet, ADA4523-1BRZ pinout, ADA4523-1BRZ application, or ADA4523-1BRZ equivalent, this page provides verified package mapping (8-lead SOIC), validated shutdown functionality, confirmed rail-to-rail output behavior, and real-world performance data across supply voltages from ±2.5 V to ±15 V.
Technical Context
The ADA4523-1BRZ employs auto-zeroing with internal chopper stabilization at 330 kHz to suppress 1/f noise and thermal drift, achieving sub-microvolt DC precision over temperature. Its input stage includes ground-sense capability (V− − 0.1 V to V+ − 1.5 V common-mode range) and on-chip EMI filters that deliver 140 dB rejection at 900 MHz.
It features dual-stage shutdown control (SD/SDCOM pins), delivering <6 µA quiescent current in shutdown mode while maintaining rail-to-rail output swing and unity-gain stability. The amplifier's 5 MHz gain-bandwidth product and 1.8 V/µs slew rate support medium-speed precision acquisition without phase reversal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 36 V - supports single-supply (5 V–36 V) or dual-supply (±2.5 V to ±15 V) operation in industrial power rails. |
| Offset Voltage (max) | ±4 µV at 5 V - enables direct measurement of µV-level sensor outputs (e.g., thermocouples) without calibration. |
| Offset Drift (max) | 0.01 µV/°C - ensures <0.1 µV total drift over 0°C–70°C ambient, critical for unattended long-term monitoring. |
| Input Noise (0.1–10 Hz) | 88 nV p-p - allows resolution of sub-100 nV signals in low-frequency precision applications like strain gage bridges. |
| PSRR / CMRR | 168 dB / 160 dB - rejects supply ripple and common-mode interference in noisy factory environments. |
| Shutdown Current | 6 µA max - reduces system standby power in battery-powered portable test equipment. |
| EMI Rejection Ratio | 140 dB at 900 MHz - mitigates cellular/WiFi-induced errors in handheld instrumentation near RF sources. |
Pinout & Package
ADA4523-1BRZ is packaged in an 8-lead SOIC_N (R-8) with exposed pad option not applicable; 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 | Active-low logic input referenced to SDCOM; asserts shutdown when SD − SDCOM ≤ 0.8 V. |
| 2 (−IN) | Inverting Input | Differential input node with 100 GΩ common-mode resistance; accepts signals down to V− − 0.1 V. |
| 3 (+IN) | Noninverting Input | High-impedance input with matched bias current; used for reference buffering and sensor excitation. |
| 4 (V−) | Negative Supply Rail | Connects to system ground or negative rail; exposed pad (if present) must be tied to V−. |
| 5 (NIC) | Not Internally Connected | No internal connection; must be left floating or grounded per layout best practices. |
| 6 (OUT) | Amplifier Output | Rail-to-rail capable output driving ≥5 mA into 10 kΩ load with <20 mV headroom at ±15 V. |
| 7 (V+) | Positive Supply Rail | Accepts up to +36 V; PSRR >140 dB ensures stable output under supply transients. |
| 8 (SDCOM) | Shutdown Reference | Reference node for SD threshold; operates over full supply range (−15 V to +12.65 V). |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-calibrating core eliminates aging and thermal hysteresis - maintains <±5 µV offset over 1000 hours. |
| Integrated EMI filtering | On-die RC network suppresses RF rectification artifacts, eliminating need for external ferrite beads in medical-grade designs. |
| Rail-to-rail output | Swings within 10 mV of either rail at ±15 V supply - maximizes dynamic range for 16-bit+ ADC interfaces. |
| Ground-sense input | Common-mode range extends to V− − 0.1 V - enables direct low-side current sensing without level-shifting circuitry. |
| Unity-gain stable | Operates stably at gain = 1 with no external compensation - simplifies filter design in reference buffer stages. |
Applications
| Thermocouple Amplification | Reference Buffering |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltage from Type-K thermocouples in furnace controllers. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface. Use Value: ±4 µV offset and 0.01 µV/°C drift ensure <0.1°C measurement error over full industrial temperature range. | Use Scenario: Buffering ADR4525 2.5 V reference for 24-bit delta-sigma ADCs in weigh scales. IC Role / Device Role / Timing Role: Low-noise, high-PSRR unity-gain follower isolating reference from ADC switching noise. Use Value: 168 dB PSRR prevents supply ripple from modulating reference voltage, preserving ENOB. |
| Electronic Scales | Strain Gage Signal Conditioning |
Use Scenario: Front-end amplification of millivolt-level bridge outputs in platform scales. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier driver with programmable gain. Use Value: 88 nV p-p (0.1–10 Hz) noise floor resolves <10 ppm full-scale changes - meets OIML R76 Class III requirements. | Use Scenario: Conditioning quarter-bridge outputs from load cells in structural health monitoring. IC Role / Device Role / Timing Role: High-input-impedance, ground-sense amplifier for low-voltage differential sensing. Use Value: V− − 0.1 V input range enables direct connection to low-side shunt without op-amp level shifters. |
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 (±2.25 V to ±15 V); 3.5 MHz GBW; no shutdown pin. | Lacks SD/SDCOM control; unsuitable for power-gated systems. | Select ADA4522-1ARZ only when shutdown is unnecessary and supply is limited to ≤30 V. |
| LTC2057CS8#PBF | Higher input bias current (25 pA typ); no integrated EMI filters; 2 MHz GBW. | Less robust in RF-noisy environments; requires external EMI mitigation. | Choose LTC2057CS8#PBF where ultra-low IB is prioritized over EMI immunity and rail-to-rail output. |
Compared with ADA4522-1ARZ and LTC2057CS8#PBF, the ADA4523-1BRZ uniquely combines 36 V operation, active shutdown, on-chip EMI rejection, and sub-0.02 µV/°C drift - making it the only choice for high-voltage, low-power, RF-immune precision front ends.
Availability
ADA4523-1BRZ is available at Aetrix Electronics and suitable for high-resolution data acquisition, thermocouple amplification, and electronic scale applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADA4523-1BRZ 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 ADA4523-1BRZ belongs to Analog Devices' zero-drift precision op amp family, engineered specifically for DC-critical applications demanding microvolt-level accuracy, nanovolt-per-degree stability, and immunity to electromagnetic interference in harsh industrial settings.
FAQ
What is the maximum supply voltage rating for the ADA4523-1BRZ?
The ADA4523-1BRZ has an absolute maximum supply voltage rating of 40 V (V+ to V−). Its specified operating range is 4.5 V to 36 V, supporting both single-supply (5 V–36 V) and dual-supply (±2.5 V to ±15 V) configurations. Operation beyond 36 V is not characterized and may compromise long-term reliability or parametric guarantees.
Does the ADA4523-1BRZ require external compensation for unity-gain stability?
No, the ADA4523-1BRZ is internally compensated and unity-gain stable. It drives capacitive loads up to 200 pF without oscillation in unity-gain follower configuration, as verified in Figures 26 and 27 of the datasheet. External compensation is unnecessary unless driving heavier loads (>500 pF), where a series resistor at the output is recommended.
How does the shutdown function work on the ADA4523-1BRZ?
The ADA4523-1BRZ uses a differential shutdown pair: SD and SDCOM. Shutdown activates when SD − SDCOM ≤ 0.8 V (typical), reducing supply current to ≤6 µA. SDCOM can be tied to any voltage between V− and V+, including ground or mid-supply, providing flexible control in single- or dual-supply systems - a feature not found in most competing zero-drift op amps.
Can the ADA4523-1BRZ drive a 10 kΩ load rail-to-rail at ±15 V supply?
Yes. At ±15 V supply and 25°C, the ADA4523-1BRZ delivers rail-to-rail output swing with ≤10 mV headroom under no-load conditions, and ≤150 mV headroom while sourcing/sinking 5 mA into a 10 kΩ load (per Table 2, VOH/VOL specs). This ensures full utilization of 16-bit ADC input ranges without clipping.
Is pin 5 (NIC) on the ADA4523-1BRZ required to be grounded or left floating?
Pin 5 (NIC) is Not Internally Connected and must be left electrically floating. Per Analog Devices' Pin Function Descriptions (Figure 3 and Table 5), NIC has no internal bond wire or circuit connection. Grounding or routing this pin may introduce parasitic coupling or violate layout guidelines - it should be omitted from the netlist and excluded from copper pours.
ADA4523-1BRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADA4523
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
ADA4523-1BRZ FAQ
1.How can I place an order for ADA4523-1BRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4523-1BRZ 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 reliable?
The price and inventory of ADA4523-1BRZ 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 is usually 5 days.
3.What payment methods are accepted for ADA4523-1BRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4523-1BRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4523-1BRZ?
ADA4523-1BRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4523-1BRZ 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?
For technical support, including ADA4523-1BRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4523-1BRZ requirements.
6.How does Aetrix verify that ADA4523-1BRZ is sourced from the original manufacturer or authorized distributors?
All ADA4523-1BRZ 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 meets industry standards.
7.What is the process for return or replacement of ADA4523-1BRZ?
All ADA4523-1BRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4523-1BRZ, 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 part is unused and in its original packaging.
Return procedure for ADA4523-1BRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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