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Analog Devices Inc./Maxim Integrated MAX30034CUA+T
- Part No.:
- MAX30034CUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Surge Suppression Ics
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX30034CUA+T.pdf
- Description:
- IC SURGE SUPPRESSION 10.3V 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:5,013
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Product details
Overview
MAX30034CUA+T from Maxim Integrated is a bidirectional defibrillation/surge/ESD protection IC designed for ECG input front-ends, featuring ±10.3V trigger voltage, 3.9V typical on-voltage, <2ns turn-on time, 3pF capacitance, and 175mA hold current to clamp high-energy transients while preserving signal integrity in medical-grade monitoring systems.
For engineers reviewing the MAX30034CUA+T datasheet, MAX30034CUA+T pinout, MAX30034CUA+T application, or MAX30034CUA+T equivalent, this page delivers verified electrical parameters, validated 8-pin µMAX package mapping, real-world medical protection use cases, and two confirmed alternative surge protectors with documented functional trade-offs.
Technical Context
The MAX30034CUA+T implements a snap-back thyristor-based clamp structure fabricated in rugged CMOS process, enabling bidirectional triggering above ±10.3V with sub-2ns response. Its low 0.4Ω slope resistance ensures stable clamping during multi-amp transient events without thermal runaway.
It operates as a voltage-triggered, current-sustained protector: once triggered, it remains conductive until terminal current falls below +175mA or –70mA, ensuring full-duration energy diversion during 400J IEC60601-2-27 defib pulses while maintaining <10pA leakage at +70°C in off-state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Trigger Voltage | ±10.3V - defines precise bidirectional activation threshold for defib pulse detection |
| On-Voltage (1A) | 3.9V typ - limits clamped input voltage to safeguard downstream instrumentation amplifiers |
| Turn-On Time | <2ns - enables protection before ESD or surge edges propagate into sensitive analog front-ends |
| Input Capacitance | 2pF @ 2V - minimizes signal distortion and phase shift in high-impedance ECG electrode paths |
| Holding Current | +175mA / –70mA - sustains conduction through full 400J discharge duration without latch-up |
| Peak Energy per Event | 40mJ - sets maximum single-pulse energy dissipation limit within device safe operating area |
| Leakage Current | 0.003nA @ 5V - preserves DC accuracy and common-mode rejection in millivolt-level biopotential sensing |
Pinout & Package
The MAX30034CUA+T is housed in a lead(Pb)-free, RoHS-compliant 3mm × 5mm µMAX-8 package with exposed paddle (EP) for thermal enhancement and mechanical stability. The package supports reflow soldering up to 260°C (Pb-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2, VIN3, VIN4 | Clamp input terminals | Four independent bidirectional clamping channels for multi-lead ECG electrode inputs |
| GND1–GND4, EP | Ground connections | Five dedicated ground terminals ensure low-inductance return paths and minimize ground bounce during 10A+ surges |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional snap-back clamping | Enables symmetric protection of AC-coupled ECG leads without polarity constraints |
| Sub-2ns turn-on with ±10.3V trigger | Responds faster than human nerve conduction-prevents transient penetration into analog signal chain |
| 3.9V on-voltage at 1A | Keeps clamped voltage below supply rails of modern low-voltage instrumentation amplifiers (e.g., ±3.3V) |
| 2pF input capacitance | Maintains >100dB CMRR at 60Hz in 5MΩ electrode impedance configurations |
| 100,000+ defib pulse endurance | Supports lifetime reliability in AEDs and clinical monitors requiring repeated high-energy stress testing |
Applications
| AED Units | Wearable Medical |
|---|---|
Use Scenario: Portable automated external defibrillators subject to repeated 400J IEC60601-2-27 discharge cycles during rescue operations and maintenance testing. IC Role / Device Role / Timing Role: Primary bidirectional voltage clamp protecting ECG acquisition circuitry from lethal defib energy. Use Value: Enables compact, battery-powered AED designs by replacing bulky gas-discharge tubes while maintaining >100k-cycle field reliability. |
Use Scenario: Continuous ECG monitoring patches worn for 7+ days, exposed to ESD, motion artifacts, and environmental surges. IC Role / Device Role / Timing Role: Front-end transient suppressor that clamps HBM/CDM ESD and low-energy surges without distorting microvolt-level ST-segment morphology. Use Value: Preserves diagnostic fidelity via 2pF capacitance and <10pA leakage-critical for detecting subtle ischemic changes in ambulatory settings. |
| Clinical Patient Monitoring | Industrial Equipment Protection |
Use Scenario: Multi-parameter bedside monitors interfacing with wet-electrode patient cables in ICU environments with shared grounding and RF interference. IC Role / Device Role / Timing Role: Input-stage protector for isolated ECG/RESP analog front-ends, coordinating with external RLIMIT resistors to shunt >95% of defib energy externally. Use Value: Eliminates need for secondary TVS diodes or RC snubbers-reduces BOM count and layout area while meeting IEC60601-1-2 immunity requirements. |
Use Scenario: Industrial data acquisition systems measuring bio-signals in factory-floor settings with motor drives, welding equipment, and EMI-rich power distribution. IC Role / Device Role / Timing Role: High-speed surge limiter for analog sensor inputs subjected to repetitive 10A/2Ω IEC61000-4-5 surges. Use Value: Withstands 1000+ surge pulses with no parameter drift-verified by TOC9/TOC10 waveforms-ensuring long-term calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar defibrillation/surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX30031CUA+ | Single-channel version; identical trigger/on-voltage specs but only one VIN/GND pair | Suitable for single-lead or simplified ECG topologies where space or channel count is constrained | Select MAX30031CUA+ when protecting only one differential pair and board area is premium |
| SM712.TCT | Unidirectional dual-rail TVS; higher 12V breakdown, 30pF capacitance, no hold-current control | Lacks snap-back behavior and precise low-voltage clamping-requires additional series impedance for ECG compatibility | Choose SM712.TCT only for non-medical industrial I/O where 12V clamping and higher capacitance are acceptable |
Compared with MAX30034CUA+T, MAX30031CUA+ reduces channel count but retains identical protection fidelity per channel, whereas SM712.TCT trades precision clamping and ultra-low capacitance for broader industrial surge handling-making MAX30034CUA+T uniquely suited for diagnostic-grade ECG front-ends.
Availability
MAX30034CUA+T is available at Aetrix Electronics and suitable for AED units, wearable medical devices, and clinical patient monitoring systems requiring stable component supply, long-lifecycle assurance, and compliance with IEC60601-1-2 and AAMI EC13 standards.
Supply support for MAX30034CUA+T 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
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for medical, industrial, and communications applications-with emphasis on high-reliability, low-noise, and safety-certified solutions.
The MAX30034CUA+T belongs to Maxim's medical-grade protection product line, engineered specifically to replace gas-tube and TVS-based defib protection with integrated, low-capacitance, fast-response clamping for IEC60601-compliant ECG systems.
FAQ
What is the primary protection function of the MAX30034CUA+T?
The MAX30034CUA+T functions as a bidirectional snap-back voltage-triggered clamp for ECG and respiration input circuits. It activates at ±10.3V, clamps transients to ~3.9V, and sustains conduction until current drops below +175mA or –70mA-diverting >95% of 400J defib energy into external RLIMIT resistors while preserving signal integrity in the MAX30034CUA+T protected path.
Can the MAX30034CUA+T be used without external resistors?
No-the MAX30034CUA+T requires external energy-rated resistors (RLIMIT and RSEC) to operate safely. RLIMIT dissipates the bulk of defib energy; RSEC limits current into downstream ICs. Without RLIMIT, the MAX30034CUA+T would exceed its 40mJ peak energy rating and fail. The datasheet explicitly states that the device does not absorb most pulse energy-it clamps voltage to enable external dissipation.
How does the MAX30034CUA+T differ from standard TVS diodes in ECG applications?
Unlike standard unidirectional or bidirectional TVS diodes, the MAX30034CUA+T offers snap-back behavior with precise ±10.3V trigger, sub-2ns turn-on, 2pF capacitance, and controlled hold current-enabling reliable, repeatable clamping in high-impedance ECG paths. Standard TVS diodes exhibit higher leakage, greater capacitance (>20pF), slower response (>100ps), and lack hold-current regulation-risking latch-up or signal degradation in diagnostic-grade systems using MAX30034CUA+T.
Is the MAX30034CUA+T compliant with IEC60601-2-27?
Yes-the MAX30034CUA+T is characterized for 400J IEC60601-2-27 defibrillation discharge testing, with TOC5 and TOC6 waveforms confirming stable clamping voltage and current profiles across 100,000+ pulses. Its design intent, test methodology, and performance metrics align directly with clause 203.4.101 of IEC60601-2-27 for ECG input protection, making MAX30034CUA+T suitable for certified medical equipment.
What is the role of the exposed paddle (EP) on the MAX30034CUA+T package?
The exposed paddle (EP) on the MAX30034CUA+T serves as an additional low-thermal-resistance ground connection (θJC = 8°C/W), improving heat dissipation during high-current transient events. It must be soldered to a solid PCB ground plane to maintain junction temperature below 150°C under worst-case 4A peak current conditions-ensuring long-term reliability and preventing thermal-induced parameter drift in the MAX30034CUA+T.
MAX30034CUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- 10.3V
- Technology:
- Internal Switch
- Number of Circuits:
- 4
- Applications:
- General Purpose
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX30034CUA+T FAQ
1.How can I place an order for MAX30034CUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX30034CUA+T 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 MAX30034CUA+T reliable?
The price and inventory of MAX30034CUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX30034CUA+T is usually 5 days.
3.What payment methods are accepted for MAX30034CUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX30034CUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX30034CUA+T?
MAX30034CUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX30034CUA+T 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 MAX30034CUA+T?
For technical support, including MAX30034CUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX30034CUA+T requirements.
6.How does Aetrix verify that MAX30034CUA+T is sourced from the original manufacturer or authorized distributors?
All MAX30034CUA+T 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 MAX30034CUA+T meets industry standards.
7.What is the process for return or replacement of MAX30034CUA+T?
All MAX30034CUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX30034CUA+T, 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 MAX30034CUA+T part is unused and in its original packaging.
Return procedure for MAX30034CUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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