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Analog Devices Inc. ADA4528-2TCPZ-EPR7
- Part No.:
- ADA4528-2TCPZ-EPR7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADA4528-2TCPZ-EPR7.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
ADA4528-2TCPZ-EPR7 from Analog Devices is a dual-channel, rail-to-rail input/output (RRIO), zero-drift operational amplifier optimized for precision DC-coupled signal conditioning. It delivers 2.5 µV maximum offset voltage, 0.015 µV/°C max drift, and 97 nV p-p (0.1 Hz to 10 Hz) low-frequency noise-enabling high-accuracy amplification in bridge sensor front-ends such as load cells and thermocouples.
For engineers reviewing the ADA4528-2TCPZ-EPR7 datasheet, ADA4528-2TCPZ-EPR7 pinout, ADA4528-2TCPZ-EPR7 application, or ADA4528-2TCPZ-EPR7 equivalent, this enhanced product supports defense/aerospace use with −55°C to +125°C operation, LFCSP-8 packaging, and full characterization per AQEC standards-critical for mission-critical instrumentation requiring long-term stability and minimal thermal error.
Technical Context
The ADA4528-2TCPZ-EPR7 employs auto-zeroing architecture with chopper stabilization to eliminate 1/f noise and minimize drift over temperature and time. Its dual amplifier design features independent inputs and outputs, with matched channel performance verified across the extended industrial temperature range.
It operates from single supplies (2.2 V to 5.5 V) or split supplies (±1.1 V to ±2.75 V), maintains 130 dB minimum open-loop gain and 135 dB CMRR, and achieves 6.2 MHz −3 dB closed-loop bandwidth at unity gain-supporting both precision DC gain stages and moderate-speed signal acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 2.5 µV max - enables sub-0.01% gain error in 100 mV full-scale bridge measurements without trimming. |
| Offset Drift | 0.015 µV/°C max - ensures <1 µV total drift over −55°C to +125°C, critical for unattended field instrumentation. |
| Voltage Noise (0.1–10 Hz) | 97 nV p-p - supports 24-bit ADC resolution in low-frequency sensor interfaces without noise floor degradation. |
| CMRR | 135 dB min - rejects >3 million-fold common-mode interference, essential for high-gain transducer amplification. |
| Supply Range | 2.2 V to 5.5 V single supply - allows direct interface with 3.3 V or 5 V microcontrollers and ADCs without level-shifting. |
| Operating Temperature | −55°C to +125°C - qualified per AQEC for aerospace/defense systems where commercial-grade op amps fail. |
| Package | 8-lead LFCSP (3 mm × 3 mm, 0.75 mm height) - provides low thermal resistance (θJC = 3.9°C/W) and compact layout for space-constrained modules. |
Pinout & Package
The ADA4528-2TCPZ-EPR7 is housed in an 8-lead Lead Frame Chip Scale Package (LFCSP) with exposed pad. The exposed pad must be connected to V− or left unconnected per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Output of Channel A - rail-to-rail swing supports full dynamic range utilization into ADC reference rails. |
| 2 | −IN A | Inverting input of Channel A - matched with +IN A for differential gain configurations with minimal input offset error. |
| 3 | +IN A | Noninverting input of Channel A - high common-mode rejection enables accurate sensing in noisy industrial environments. |
| 4 | V− | Negative supply terminal - also serves as thermal and electrical reference for exposed pad connection. |
| 5 | +IN B | Noninverting input of Channel B - electrically isolated from Channel A; supports dual-sensor or signal+reference topologies. |
| 6 | −IN B | Inverting input of Channel B - matched bias current (≤400 pA) minimizes offset in high-impedance source applications. |
| 7 | OUT B | Output of Channel B - independently buffered output avoids crosstalk in multi-channel data acquisition systems. |
| 8 | V+ | Positive supply terminal - supports operation down to 2.2 V, enabling battery-powered handheld test equipment. |
| EPAD | Exposed Pad | Thermal and electrical tie point - connection to V− improves thermal dissipation and reduces package inductance for stable high-frequency performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output (RRIO) | Enables full-scale signal capture from sensors operating near supply rails-no headroom loss in low-voltage systems. |
| Ultralow 0.1 Hz–10 Hz noise | 97 nV p-p ensures stable baseline in precision weigh scales and medical ECG front-ends without post-acquisition filtering. |
| Zero-drift architecture | Auto-zeroing eliminates aging and thermal hysteresis effects-maintains calibration integrity over 10+ year deployments. |
| AQEC-qualified enhanced product | Controlled manufacturing baseline, single fab/assembly site, and PCN support meet MIL-PRF-38535 Class K requirements. |
| High PSRR (130 dB min) | Rejects power supply ripple in mixed-signal PCBs-prevents coupling of digital switching noise into analog signal paths. |
Applications
| Thermocouple Amplification | Load Cell Signal Conditioning |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs in furnace temperature controllers with ambient temperature ranging from −40°C to +85°C. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface. Use Value: 0.015 µV/°C drift ensures <0.1°C measurement uncertainty over full operating range without recalibration. |
Use Scenario: Conditioning mV-output Wheatstone bridge signals in industrial weighing platforms subject to vibration and thermal gradients. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation amplifier front-end driving a 24-bit sigma-delta ADC. Use Value: 97 nV p-p noise and 135 dB CMRR enable 1:1,000,000 dynamic range for sub-gram resolution at 10 kg full scale. |
| Medical Instrumentation | Handheld Test Equipment |
Use Scenario: Front-end amplification in portable blood pressure monitors using piezoresistive sensors. IC Role / Device Role / Timing Role: Battery-powered, low-quiescent-current signal conditioner with rail-to-rail output swing into ADC reference. Use Value: 1.7 mA supply current per amplifier and 2.2 V minimum supply extend battery life while maintaining 24-bit effective resolution. |
Use Scenario: Input stage of handheld multimeters measuring µV DC offsets and low-level AC signals in field service. IC Role / Device Role / Timing Role: Dual-channel amplifier supporting simultaneous voltage/current measurement with auto-zeroed DC accuracy. Use Value: Matched dual channels allow correlated double sampling to cancel residual offset and drift in real-time calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4528-2ARMZ | Commercial-grade version; −40°C to +125°C rating, no AQEC qualification, LFCSP-8 but different branding and traceability. | Lacks defense/aerospace documentation, not suitable for programs requiring controlled baseline or extended reliability reporting. | Select only for cost-sensitive industrial designs where −55°C operation and AQEC compliance are unnecessary. |
| OPA2189IDR | TI zero-drift op amp; 0.005 µV/°C drift, 5.2 nV/√Hz noise at 1 kHz, but only rated to −40°C to +125°C and no exposed-pad LFCSP option. | Higher bandwidth (12 MHz GBW) but lacks extended temperature validation and thermal performance of CP-8-19 package. | Prefer when ultra-low drift dominates over military temp range; verify PCB thermal design if replacing ADA4528-2TCPZ-EPR7 in high-reliability layouts. |
Compared with ADA4528-2ARMZ and OPA2189IDR, the ADA4528-2TCPZ-EPR7 uniquely combines −55°C operation, AQEC process control, and LFCSP thermal performance-making it the sole choice for flight-critical or long-lifecycle embedded systems where drift, noise, and environmental robustness are co-constrained.
Availability
ADA4528-2TCPZ-EPR7 is available at Aetrix Electronics and suitable for aerospace avionics, defense electronics, and industrial process control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4528-2TCPZ-EPR7 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 ADA4528-2TCPZ-EPR7 belongs to Analog Devices' Enhanced Product line-designed specifically for high-reliability applications in defense, aerospace, and industrial infrastructure where extended temperature operation and controlled manufacturing are mandatory.
FAQ
What is the operating temperature range of the ADA4528-2TCPZ-EPR7?
The ADA4528-2TCPZ-EPR7 is specified for continuous operation from −55°C to +125°C. This extended industrial temperature range is validated per AQEC standards and supported by full electrical characterization across the range-including offset voltage, drift, noise, and CMRR-making it suitable for under-hood automotive, downhole oil/gas, and satellite payload applications where commercial op amps cannot perform reliably.
Does the ADA4528-2TCPZ-EPR7 require external capacitors for stability?
No, the ADA4528-2TCPZ-EPR7 is unity-gain stable and does not require external compensation capacitors. Its internal compensation ensures phase margin ≥57° at unity gain with 100 pF load, and it maintains stability driving capacitive loads up to 1000 pF when used with appropriate series resistance-simplifying layout in precision sensor interfaces where board space is constrained.
How is the exposed pad on the ADA4528-2TCPZ-EPR7 configured?
The exposed pad of the ADA4528-2TCPZ-EPR7 must be connected to V− (pin 4) or left unconnected-grounding or connecting to other potentials is not permitted. This configuration optimizes thermal dissipation (θJC = 3.9°C/W) and minimizes parasitic inductance, directly contributing to low-noise performance and overload recovery consistency in the ADA4528-2TCPZ-EPR7.
What is the maximum supply voltage for the ADA4528-2TCPZ-EPR7?
The absolute maximum supply voltage for the ADA4528-2TCPZ-EPR7 is 6 V. The recommended operating range is 2.2 V to 5.5 V for single-supply use or ±1.1 V to ±2.75 V for dual-supply operation. Exceeding 6 V risks permanent damage, and operation above 5.5 V degrades PSRR and increases quiescent current beyond specifications-both verified in the ADA4528-2TCPZ-EPR7's electrical characteristics tables.
Is the ADA4528-2TCPZ-EPR7 RoHS compliant?
Yes, the ADA4528-2TCPZ-EPR7 is RoHS compliant, as indicated by the "Z" suffix in its ordering code per Analog Devices' official ordering guide. It meets EU Directive 2011/65/EU and subsequent amendments, including exemption 7a for lead in high-melting-temperature solder alloys used in the LFCSP package assembly-fully documented in the manufacturer's material declarations for the ADA4528-2TCPZ-EPR7.
ADA4528-2TCPZ-EPR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 3.4 MHz
- -3db Bandwidth:
- 6.5 MHz
- Current - Input Bias:
- 125 pA
- Voltage - Input Offset:
- 0.3 µV
- Current - Supply:
- 1.5mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP-WD (3x3)
ADA4528-2TCPZ-EPR7 FAQ
1.How can I place an order for ADA4528-2TCPZ-EPR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4528-2TCPZ-EPR7 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 ADA4528-2TCPZ-EPR7 reliable?
The price and inventory of ADA4528-2TCPZ-EPR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4528-2TCPZ-EPR7 is usually 5 days.
3.What payment methods are accepted for ADA4528-2TCPZ-EPR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4528-2TCPZ-EPR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4528-2TCPZ-EPR7?
ADA4528-2TCPZ-EPR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4528-2TCPZ-EPR7 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 ADA4528-2TCPZ-EPR7?
For technical support, including ADA4528-2TCPZ-EPR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4528-2TCPZ-EPR7 requirements.
6.How does Aetrix verify that ADA4528-2TCPZ-EPR7 is sourced from the original manufacturer or authorized distributors?
All ADA4528-2TCPZ-EPR7 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 ADA4528-2TCPZ-EPR7 meets industry standards.
7.What is the process for return or replacement of ADA4528-2TCPZ-EPR7?
All ADA4528-2TCPZ-EPR7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4528-2TCPZ-EPR7, 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 ADA4528-2TCPZ-EPR7 part is unused and in its original packaging.
Return procedure for ADA4528-2TCPZ-EPR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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