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Analog Devices Inc. ADA4528-2TCPZ-EP
- Part No.:
- ADA4528-2TCPZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADA4528-2TCPZ-EP.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,699
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Product details
Overview
ADA4528-2TCPZ-EP 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 max 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 interfaces and medical instrumentation.
For engineers reviewing the ADA4528-2TCPZ-EP datasheet, ADA4528-2TCPZ-EP pinout, ADA4528-2TCPZ-EP application, or ADA4528-2TCPZ-EP equivalent, key selection criteria include extended temperature operation (−55°C to +125°C), ultralow noise at sub-10 Hz, guaranteed CMRR ≥135 dB, and LFCSP-8 package compatibility with space-constrained aerospace and industrial systems.
Technical Context
The ADA4528-2TCPZ-EP employs auto-zeroing architecture with chopper stabilization to eliminate 1/f noise and minimize thermal drift. Its dual amplifier core supports independent channel operation with matched gain and phase response up to 6.2 MHz closed-loop bandwidth.
Designed for single-supply (2.2 V to 5.5 V) or dual-supply (±1.1 V to ±2.75 V) configurations, it maintains rail-to-rail output swing within 10 mV of rails at 10 kΩ load and achieves 130 dB PSRR across 100 Hz–1 MHz-critical for noisy power environments in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 2.5 µV maximum - enables <1 LSB error in 20-bit ADC systems with ±10 V full-scale range |
| Offset Drift | 0.015 µV/°C maximum - ensures <0.1 µV total drift over −55°C to +125°C operating range |
| Voltage Noise (0.1–10 Hz) | 97 nV p-p - supports thermocouple measurements with <0.01°C resolution at 1 Hz bandwidth |
| CMRR | 135 dB minimum - rejects >3 million:1 common-mode interference in unshielded sensor cables |
| Supply Range | 2.2 V to 5.5 V single supply - compatible with Li-ion battery-powered handheld test equipment |
| Unity-Gain Bandwidth | 4 MHz - allows stable operation in unity-gain buffer configurations for low-impedance source driving |
| Operating Temperature | −55°C to +125°C - qualified per AQEC standard for defense/aerospace deployment |
Pinout & Package
ADA4528-2TCPZ-EP is housed in an 8-lead Lead Frame Chip Scale Package (LFCSP), 3 mm × 3 mm body, 0.75 mm height, with exposed pad (EPAD) that must be connected to V− or left unconnected per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads down to 2 kΩ while maintaining rail-to-rail swing |
| 2 | −IN A | Inverting input, Channel A - accepts differential signals with 1 GΩ common-mode input resistance |
| 3 | +IN A | Noninverting input, Channel A - supports common-mode voltages from rail to rail (0 V to VSY) |
| 4 | V− | Negative supply - EPAD connection point for thermal dissipation and noise reduction |
| 5 | +IN B | Noninverting input, Channel B - electrically isolated from Channel A; matches A-channel specs |
| 6 | −IN B | Inverting input, Channel B - enables dual-sensor simultaneous acquisition without crosstalk |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; supports independent gain configuration |
| 8 | V+ | Positive supply - accepts up to 6 V absolute maximum; powers both amplifiers simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1 Hz–10 Hz noise | 97 nV p-p at AV = +100 - preserves signal integrity in slow-slewing transducer outputs |
| Zero-drift architecture | 0.015 µV/°C max drift - eliminates calibration drift in unattended field-deployed instrumentation |
| Rail-to-rail I/O | Input range: 0 V to VSY; Output swing: within 10 mV of rails - maximizes dynamic range in low-voltage systems |
| High PSRR/CMRR | 130 dB PSRR and 135 dB CMRR - sustains accuracy in mixed-signal PCBs with digital switching noise |
| AQEC-qualified | Controlled baseline, single fab/assembly site - meets traceability and reliability requirements for defense programs |
Applications
| Thermocouple Signal Conditioning | Load Cell Amplification |
|---|---|
Use Scenario: Amplifying microvolt-level Seebeck voltage from Type K thermocouples in furnace monitoring systems operating from −55°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with cold-junction compensation interface. Use Value: 2.5 µV offset and 0.015 µV/°C drift ensure <0.1°C measurement uncertainty over full temperature range without recalibration. |
Use Scenario: Conditioning mV-output Wheatstone bridge signals from strain-gauge-based load cells in industrial weighing platforms. IC Role / Device Role / Timing Role: Low-noise, high-CMRR differential amplifier with programmable gain stage before 24-bit ΣΔ ADC. Use Value: 97 nV p-p 0.1–10 Hz noise prevents digitization of amplifier-induced artifacts in static weight readings. |
| Medical ECG Front-End | Handheld Multimeter Input Stage |
Use Scenario: Biopotential signal amplification in portable ECG monitors requiring FDA-grade accuracy and low power. IC Role / Device Role / Timing Role: First-stage gain block with RRIO capability to interface directly with electrode-skin interface and drive anti-alias filter. Use Value: 135 dB CMRR rejects 60 Hz mains interference even with asymmetric electrode impedances; 2.2 V min supply enables single-cell operation. |
Use Scenario: High-impedance voltage measurement path in battery-powered handheld DMMs with autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Auto-zeroed buffer and attenuator driver ensuring stable reference tracking during range switching. Use Value: Zero-drift behavior eliminates auto-zero circuitry overhead; 5.5 V max supply supports internal charge-pump rail generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-2ARMZ | Same zero-drift architecture but rated for −40°C to +125°C; 0.02 µV/°C max drift; LFCSP-8 package | Commercial/industrial grade only; lacks AQEC qualification and −55°C lower limit | Select when defense/aerospace certification is not required and cost sensitivity outweighs extended cold-temperature margin |
| LTC2057HMS8#PBF | 0.25 µV max offset, 0.03 µV/°C max drift, 1.1 µV p-p (0.1–10 Hz) noise; MSOP-8 package | Higher noise and drift than ADA4528-2TCPZ-EP; no AQEC support; wider supply range (±1.65 V to ±5.5 V) | Choose for legacy MSOP footprint compatibility or where higher supply voltage headroom is needed over temperature |
Compared with ADA4528-2TCPZ-EP, ADA4522-2ARMZ offers identical architecture at lower cost but sacrifices military-grade temperature range and AQEC traceability, while LTC2057HMS8#PBF trades off noise/drift performance for broader supply flexibility and legacy packaging.
Availability
ADA4528-2TCPZ-EP is available at Aetrix Electronics and suitable for defense electronics, aerospace avionics, and high-reliability industrial instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4528-2TCPZ-EP 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-EP belongs to Analog Devices' Enhanced Product line, engineered specifically for defense, aerospace, and critical infrastructure applications demanding extended temperature operation, controlled manufacturing baselines, and full traceability.
FAQ
What is the maximum supply voltage rating for ADA4528-2TCPZ-EP?
The ADA4528-2TCPZ-EP has an absolute maximum supply voltage of 6 V across V+ and V− terminals. Operation beyond this rating risks permanent damage. The recommended operating range is 2.2 V to 5.5 V single supply or ±1.1 V to ±2.75 V dual supply. Always observe the 0.3 V diode clamp limit on input pins relative to supply rails when designing protection networks for the ADA4528-2TCPZ-EP.
Does ADA4528-2TCPZ-EP require external capacitors for stability?
No, the ADA4528-2TCPZ-EP 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 capacitance. However, layout best practices-including short traces, local 100 nF ceramic bypass capacitors at each supply pin and proper grounding of the exposed pad-are essential to maintain specified noise and PSRR performance for the ADA4528-2TCPZ-EP.
How is the exposed pad (EPAD) of ADA4528-2TCPZ-EP configured?
The exposed pad of ADA4528-2TCPZ-EP must be connected to V− (negative supply) or left unconnected-floating or connecting to ground is not permitted. This configuration minimizes thermal resistance (θJC = 3.9°C/W) and reduces substrate noise coupling. Solder mask-defined thermal vias to an internal ground plane are acceptable only if electrically isolated from all other nets; the EPAD itself remains tied solely to V− for the ADA4528-2TCPZ-EP.
What is the typical input bias current of ADA4528-2TCPZ-EP at 25°C?
The typical input bias current of ADA4528-2TCPZ-EP is 125 pA at 25°C under 5 V supply conditions, with a maximum of 400 pA across the full −55°C to +125°C temperature range. This ultra-low IB enables high-impedance sensor interfacing-such as piezoresistive pressure sensors or pH electrodes-without significant voltage drop or measurement error. These values are confirmed in Table 2 of the ADA4528-2TCPZ-EP datasheet.
Is ADA4528-2TCPZ-EP pin-compatible with standard commercial-grade ADA4528-2 variants?
No, ADA4528-2TCPZ-EP is not pin-compatible with commercial-grade ADA4528-2 variants due to differences in branding, test flow, and qualification documentation-not physical pinout. While both share identical LFCSP-8 footprint and pin function mapping, the ADA4528-2TCPZ-EP undergoes enhanced product screening including extended temperature testing, lot traceability, and AQEC-compliant change control. System designers must validate thermal and ESD performance separately when substituting the ADA4528-2TCPZ-EP into commercial designs.
ADA4528-2TCPZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Tray
- 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-EP FAQ
1.How can I place an order for ADA4528-2TCPZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4528-2TCPZ-EP 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-EP reliable?
The price and inventory of ADA4528-2TCPZ-EP 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-EP is usually 5 days.
3.What payment methods are accepted for ADA4528-2TCPZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4528-2TCPZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4528-2TCPZ-EP?
ADA4528-2TCPZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4528-2TCPZ-EP 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-EP?
For technical support, including ADA4528-2TCPZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4528-2TCPZ-EP requirements.
6.How does Aetrix verify that ADA4528-2TCPZ-EP is sourced from the original manufacturer or authorized distributors?
All ADA4528-2TCPZ-EP 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-EP meets industry standards.
7.What is the process for return or replacement of ADA4528-2TCPZ-EP?
All ADA4528-2TCPZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with ADA4528-2TCPZ-EP, 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-EP part is unused and in its original packaging.
Return procedure for ADA4528-2TCPZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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