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Analog Devices Inc. ADA4523-1BCPZ
- Part No.:
- ADA4523-1BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADA4523-1BCPZ.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:244
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Product details
Overview
ADA4523-1 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 (0.1–10 Hz) input noise, rail-to-rail output swing, and integrated EMI filtering - enabling use in thermocouple amplifiers and reference buffering where long-term stability and noise immunity are critical.
For engineers reviewing the ADA4523-1 datasheet, ADA4523-1 pinout, ADA4523-1 application, or ADA4523-1 equivalent, this page provides verified specifications, validated pin functions, real-world application contexts for instrumentation-grade sensing, and two confirmed alternative op amps with documented functional trade-offs.
Technical Context
The ADA4523-1 employs auto-zeroing and chopper stabilization with a 330 kHz internal chopping frequency to suppress 1/f noise and drift while minimizing ripple (<1 µV rms). 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 achieve up to 140 dB rejection at 900 MHz.
It features dual shutdown control (SD/SDCOM) with rail-compatible thresholds and operates stably from 4.5 V to 36 V supply. The amplifier is unity-gain stable, supports rail-to-rail output (12 mV low / 2.5 mV high swing, no load), and maintains 160 dB CMRR and 168 dB PSRR across its full voltage and temperature range (−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, 12 V, 24 V) and split-supply (±2.5 V to ±15 V) operation without performance degradation. |
| 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 100°C ambient change, critical for unattended industrial sensors. |
| Input Noise (0.1–10 Hz) | 88 nV p-p - allows resolution of microvolt-level signals in electronic scales and strain gage bridges. |
| Gain Bandwidth Product | 5 MHz - sufficient for closed-loop gain ≥100 at 50 kHz, supporting fast-settling precision filtering stages. |
| EMI Rejection Ratio | 140 dB at 900 MHz - mitigates cellular/WiFi interference in portable test equipment without external shielding. |
| Shutdown Current | 4.5 µA typical - reduces system standby power in battery-operated measurement devices. |
Pinout & Package
ADA4523-1 is available in three 8-lead packages: SOIC_N (R-8), MSOP (RM-8), and LFCSP (CP-8-29). All variants share identical pin numbering and function mapping. The exposed pad in LFCSP must be connected to V− for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SD | Shutdown control input | Active-high logic input referenced to SDCOM; asserts shutdown when SD − SDCOM > 2 V (min). |
| 2 - −IN | Inverting input | High-impedance differential input (100 GΩ common-mode RIN); accepts signals down to V− − 0.1 V. |
| 3 - +IN | Noninverting input | Matches −IN in bias current (≤300 pA typ) and noise; enables true ground-sense differential measurement. |
| 4 - V− | Negative supply rail | Reference for all internal circuitry and exposed pad (LFCSP); must be connected to system ground or negative rail. |
| 5 - NIC | No internal connection | Unused pin; electrically isolated - no routing or soldering required. |
| 6 - OUT | Amplifier output | Rail-to-rail capable (12 mV above V−, 2.5 mV below V+ at no load); drives ≥5 mA into resistive loads. |
| 7 - V+ | Positive supply rail | Accepts up to +36 V; supplies internal charge pumps and EMI filters; PSRR = 168 dB typical. |
| 8 - SDCOM | Shutdown reference | Reference node for SD threshold; must be biased within V− − 0.3 V to V+ + 0.3 V; sinks 3–6 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Self-calibrating circuitry eliminates 1/f noise and time-dependent offset drift - guarantees <±0.1 µV long-term shift over 1000 hours (Fig. 13). |
| Integrated EMI filtering | On-chip RC networks suppress RF rectification at +IN; achieves 140 dB rejection at 900 MHz without external ferrites or capacitors. |
| Rail-to-rail output + ground-sense input | Output swings within 12 mV of V− and 2.5 mV of V+; input common-mode includes V− - enables single-supply sensor front-ends with full dynamic range. |
| Shutdown mode with differential control | Dual-pin (SD/SDCOM) interface rejects common-mode noise on control lines and supports flexible biasing in floating systems. |
| High PSRR and CMRR | 168 dB PSRR and 160 dB CMRR maintained from DC to 100 kHz - preserves signal integrity in noisy industrial power environments. |
Applications
| Thermocouple Amplification | Reference Buffering |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K thermocouples across −200°C to +1350°C with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low offset and drift to avoid calibration drift errors. Use Value: ±4 µV offset and 0.01 µV/°C drift limit temperature error to <0.1°C over full industrial range without recalibration. |
Use Scenario: Buffering ADR4525 (2.5 V) or LTC6655 (5 V) references in 24-bit SAR ADC front-ends. IC Role / Device Role / Timing Role: Low-noise, high-impedance voltage follower isolating reference from ADC input capacitance and digital switching noise. Use Value: 88 nV p-p (0.1–10 Hz) noise and 160 dB CMRR prevent reference modulation, preserving ENOB in precision digitization. |
| Electronic Scales | Low-Side Current Sensing |
|
Use Scenario: Reading mV outputs from 350 Ω strain gage bridges in platform scales and load cells. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with matched input bias currents (<600 pA) to minimize bridge imbalance error. Use Value: Input bias current ≤300 pA (typ) and 100 GΩ input resistance prevent loading-induced gain error in high-Z bridge arms. |
Use Scenario: Measuring motor phase current via 10 mΩ shunt resistor in industrial inverters with 0–30 A range. IC Role / Device Role / Timing Role: Ground-referenced current sense amplifier with V−-referenced input enabling accurate low-side sensing. Use Value: Input common-mode range extending to V− − 0.1 V allows direct connection to shunt's low-side terminal without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-1 | Lower supply voltage ceiling (±18 V max vs. ±18 V), identical offset (±4 µV) and noise (88 nV p-p), but no shutdown mode. | Lacks SD/SDCOM pins - unsuitable for power-gated systems requiring standby current <10 µA. | Select ADA4522-1 only if shutdown is unnecessary and supply stays ≤36 V; otherwise ADA4523-1 offers broader voltage headroom and active power control. |
| AD8628 | Wider offset spec (±25 µV max), higher noise (150 nV p-p), no EMI filtering, and no shutdown - but lower quiescent current (1.2 mA vs. 4.8 mA). | Not suitable for EMI-prone environments or sub-µV offset requirements; better for ultra-low-power, non-critical DC apps. | Choose AD8628 only for cost-sensitive, low-power designs where 25 µV offset and absence of EMI rejection are acceptable. |
Compared with ADA4522-1 and AD8628, the ADA4523-1 uniquely combines 36 V operation, integrated EMI filtering, and differential shutdown - making it the only option among the three for high-voltage, noise-immune, power-managed precision sensing in industrial test equipment.
Availability
ADA4523-1 is available at Aetrix Electronics and suitable for high-resolution data acquisition, reference buffering, and test-and-measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4523-1 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' zero-drift precision op amp family, engineered specifically for DC-critical instrumentation applications demanding nanovolt-level stability, ultra-low noise, and robustness in electrically noisy environments.
FAQ
What is the maximum supply voltage rating for the ADA4523-1?
The ADA4523-1 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 is fully characterized per datasheet Tables 1 and 2, delivering specified offset, noise, and PSRR performance without derating.
Does the ADA4523-1 require external components to achieve EMI immunity?
No - the ADA4523-1 integrates on-chip EMI filtering circuitry that achieves up to 140 dB rejection at 900 MHz without external capacitors or ferrite beads. This is confirmed in Figure 59 (EMIRR +IN vs. Frequency) and explicitly stated in the Features section of the datasheet.
How does the shutdown function work on the ADA4523-1?
The ADA4523-1 uses a differential shutdown interface: SD and SDCOM pins define a threshold window. Shutdown activates when SD − SDCOM exceeds 2 V (min), reducing supply current to ≤15 µA (typ). SDCOM must be biased within V− − 0.3 V to V+ + 0.3 V and sinks 3–6 µA per datasheet Table 2.
Can the ADA4523-1 drive heavy capacitive loads without instability?
Yes - the ADA4523-1 remains stable driving ≥200 pF loads, as demonstrated in Figures 52–53 (small-signal response) and Figure 56 (RS vs. CL stability chart). For loads >500 pF, a series output resistor (≥5 Ω) is recommended to maintain phase margin, per Figure 56 guidance.
Is the ADA4523-1 pin-compatible with other zero-drift op amps like ADA4522-1?
Yes - the ADA4523-1 shares identical pinout (8-lead SOIC/MSOP/LFCSP), pin functions, and footprint with ADA4522-1. However, ADA4523-1 adds SD/SDCOM pins (Pins 1 and 8), which are NC on ADA4522-1; unused SD/SDCOM pins must be tied appropriately (e.g., SDCOM to V−, SD to V−) to avoid undefined behavior.
ADA4523-1BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADA4523
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- 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-LFCSP (3x3)
ADA4523-1BCPZ FAQ
1.How can I place an order for ADA4523-1BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4523-1BCPZ 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 ADA4523-1BCPZ reliable?
The price and inventory of ADA4523-1BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4523-1BCPZ is usually 5 days.
3.What payment methods are accepted for ADA4523-1BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4523-1BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4523-1BCPZ?
ADA4523-1BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4523-1BCPZ 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 ADA4523-1BCPZ?
For technical support, including ADA4523-1BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4523-1BCPZ requirements.
6.How does Aetrix verify that ADA4523-1BCPZ is sourced from the original manufacturer or authorized distributors?
All ADA4523-1BCPZ 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 ADA4523-1BCPZ meets industry standards.
7.What is the process for return or replacement of ADA4523-1BCPZ?
All ADA4523-1BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4523-1BCPZ, 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 ADA4523-1BCPZ part is unused and in its original packaging.
Return procedure for ADA4523-1BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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