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Analog Devices Inc./Maxim Integrated MAX4335EXT+T
- Part No.:
- MAX4335EXT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MAX4335EXT+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX4335EXT+T from Maxim Integrated is a single-channel rail-to-rail input/output operational amplifier optimized for 32Ω headphone driver applications in portable, battery-powered systems. It delivers 50mA output current, features 5MHz gain-bandwidth product, operates from a 2.7V to 5.5V single supply, and achieves 0.003% THD at 20kHz into 10kΩ - enabling high-fidelity audio output in ultra-compact SC70-6 packages.
For engineers reviewing the MAX4335EXT+T datasheet, MAX4335EXT+T pinout, MAX4335EXT+T application, or MAX4335EXT+T equivalent, key selection criteria include rail-to-rail I/O swing under 32Ω load, shutdown-mode leakage (<0.5μA), PSRR (90dB), thermal overload protection, and SC70-6 footprint compatibility with space-constrained portable designs.
Technical Context
The MAX4335EXT+T employs a BiCMOS rail-to-rail input stage combining NPN and PNP differential pairs to extend common-mode range beyond both rails (GND to VCC), with switchover near VCC/2 to minimize CMRR degradation. Its output stage supports full swing into 32Ω loads while maintaining <400mV headroom from either rail at VCC = 2.7V.
It integrates smart short-circuit protection (110mA current limit activated only when |VOUT − GND| > 1V or |VCC − VOUT| > 1V) and thermal overload shutdown (trip at +140°C, auto-recovery at +120°C). The device lacks shutdown functionality - unlike MAX4336EXT+T - and is specified across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V single supply - enables direct integration with Li-ion (3.0–4.2V) or dual-cell alkaline systems without pre-regulation. |
| Output Drive Capability | 50mA into 32Ω - sufficient to deliver ≥40mW per channel for loud, low-distortion headphone output. |
| Gain-Bandwidth Product | 5MHz - supports stable unity-gain buffer configurations and preserves audio fidelity up to 20kHz with margin. |
| THD + Noise | 0.003% at 20kHz into 10kΩ - meets high-fidelity audio requirements for line-level buffering and DAC output stages. |
| PSRR | 90dB (typ) - eliminates need for dedicated LDOs in noisy battery-powered systems; rejects supply ripple effectively. |
| Input Offset Voltage | ±0.6mV (typ), ±3mV (max) - ensures minimal DC error in precision gain-setting or DC-coupled signal paths. |
| Quiescent Current | 1.2–1.8mA per amplifier at 2.7–5.5V - balances performance and battery life in always-on portable audio paths. |
Pinout & Package
MAX4335EXT+T is housed in a 6-pin SC70-6 package (package code X6SN+1, outline 21-0077), measuring 2.0mm × 1.25mm × 0.95mm - suitable for ultra-dense portable PCB layouts. Pin 1 is marked with top-side laser trim code "AAX".
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - rail-to-rail capable; drives 32Ω headphones directly; high-impedance during thermal shutdown. |
| 2 | IN− | Inverting input - accepts feedback network; input bias current polarity changes near VCC/2 due to dual-input-stage architecture. |
| 3 | GND | Analog ground reference - must be low-impedance; shared with system AGND to minimize noise coupling. |
| 4 | IN+ | Noninverting input - rail-to-rail common-mode range (GND to VCC); matched external impedance reduces offset error. |
| 5 | SHDN (N.C.) | No connection - internally unconnected; not functional on MAX4335EXT+T (shutdown is exclusive to MAX4336/MAX4338). |
| 6 | VCC | Positive supply - bypass with 0.1μF ceramic + ≥1μF bulk capacitor close to pin to ensure stability and PSRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output | Enables full dynamic range utilization from GND to VCC in single-supply 2.7–5.5V systems - critical for maximizing SNR in portable audio. |
| 50mA Output Current | Drives 32Ω loads to ≥40mW with <400mV voltage headroom - eliminates need for external boost stages in headphone amplification. |
| 90dB PSRR | Rejects battery and digital supply noise without pre-regulation - simplifies power architecture and reduces BOM cost. |
| Thermal Overload Protection | Auto-shutdown at +140°C junction temperature with recovery at +120°C - prevents permanent damage during sustained high-power output. |
| Smart Short-Circuit Protection | Limits output current to 110mA only when VOUT > 1V (sink) or VCC − VOUT > 1V (source) - preserves safe operation during transient faults. |
Applications
| 32Ω Headphone Drivers | Portable/Battery-Powered Instruments |
|---|---|
Use Scenario: Driving stereo earbuds or mono headset from a 3.3V microcontroller DAC output in a handheld medical monitor. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp configured as unity-gain buffer to isolate DAC and drive capacitive + resistive load. Use Value: Delivers 40mW into 32Ω with 0.003% THD at 20kHz and 90dB PSRR - ensuring clean audio without supply filtering. |
Use Scenario: Signal conditioning front-end for a handheld multimeter's analog input path operating from two AA cells (2.4–3.2V). IC Role / Device Role / Timing Role: Precision noninverting amplifier with gain = 10, referenced to mid-supply virtual ground. Use Value: ±0.6mV offset and rail-to-rail input enable accurate measurement of mV-range signals across full supply range. |
| Wireless PA Control | DAC/ADC Buffers |
Use Scenario: Level-shifting and current-boosting control voltage for a Class-D speaker amplifier in a Bluetooth speaker module. IC Role / Device Role / Timing Role: Low-noise, fast-settling (2μs to 0.01%) driver for PWM modulation reference or volume control DAC output. Use Value: 5MHz GBWP and 1.8V/μs slew rate support rapid control updates without phase lag or distortion. |
Use Scenario: Output buffer for a 16-bit audio DAC in a USB-C dongle, driving 10kΩ line inputs with DC coupling. IC Role / Device Role / Timing Role: Rail-to-rail unity-gain follower isolating DAC core from cable capacitance and ESD transients. Use Value: 5pF input capacitance and 26nV/√Hz voltage noise preserve SNR; 95dB large-signal gain ensures linearity over full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4336EXT+T | Identical SC70-6 package and pinout, but adds active-low SHDN pin (pin 5) enabling <0.04μA shutdown current. | Required where system-level power gating or mute sequencing is needed - e.g., Bluetooth headset auto-mute on disconnect. | Select MAX4336EXT+T if shutdown control is mandatory; MAX4335EXT+T is preferred for fixed-on, lower-complexity audio paths. |
| OPA365AIDBVR | SC70-5 package (no SHDN pin), 50MHz GBWP, 25V/μs slew rate, but only 30mA output drive into 32Ω and no thermal protection. | Suited for wideband signal conditioning (e.g., sensor front-ends), not optimized for sustained 40mW headphone drive. | Choose OPA365AIDBVR for bandwidth-critical non-audio applications; MAX4335EXT+T remains superior for robust, high-current audio output. |
Compared with MAX4336EXT+T, MAX4335EXT+T omits shutdown logic - reducing quiescent current variability and simplifying layout - while retaining identical audio performance and protection features. Against OPA365AIDBVR, MAX4335EXT+T trades bandwidth for higher output current, integrated thermal safety, and proven 32Ω headphone drive capability.
Availability
MAX4335EXT+T is available at Aetrix Electronics and suitable for portable audio systems, battery-powered instrumentation, and DAC/ADC interface circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4335EXT+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 high-performance analog and mixed-signal ICs for demanding applications in automotive, industrial, and consumer electronics.
The MAX4335–MAX4338 family was engineered specifically for low-voltage, high-output-current audio amplification - delivering rail-to-rail operation, thermal safety, and compact packaging for space- and power-constrained portable devices.
FAQ
Does MAX4335EXT+T support shutdown mode?
No, MAX4335EXT+T does not include a shutdown function. Pin 5 is labeled "SHDN (N.C.)" and is internally unconnected. Shutdown capability is exclusive to MAX4336EXT+T and MAX4338EUB+, which feature active-low SHDN pins that reduce supply current to <0.04μA and place outputs in high-impedance state. For MAX4335EXT+T, power must be removed externally to disable the amplifier.
What is the maximum continuous output power into 32Ω for MAX4335EXT+T?
At VCC = 2.7V, MAX4335EXT+T delivers ≥40mW into 32Ω (2VP-P swing), verified by its guaranteed 50mA output current and rail-to-rail output swing within 400mV of both rails. Power dissipation must remain below 245mW (SC70-6 absolute max at +70°C), so sustained 40mW output requires proper thermal design - especially above +70°C ambient.
Can MAX4335EXT+T drive a 100Ω load with full rail-to-rail swing?
Yes - MAX4335EXT+T maintains rail-to-rail output swing into 100Ω loads: at VCC = 5V, output swing is within 190mV of VCC and 240mV of GND (typical). However, output current capability drops to ~35mA at those extremes. For 100Ω, it supports ≥100mW with <0.02% THD at 10kHz, making it suitable for line drivers and instrumentation buffers.
Is MAX4335EXT+T compatible with ceramic coupling capacitors in headphone applications?
Yes - MAX4335EXT+T is fully compatible with ceramic coupling capacitors (e.g., 100μF X5R) in AC-coupled headphone driver configurations. Its rail-to-rail input allows direct connection to the capacitor's output, and its high PSRR (90dB) minimizes ripple-induced noise. Use a 0.1μF ceramic + ≥1μF bulk capacitor on VCC to maintain stability with capacitive loads up to 200pF.
What protection features are built into MAX4335EXT+T?
MAX4335EXT+T includes thermal overload protection (shuts down at +140°C junction, recovers at +120°C) and smart short-circuit protection (limits output current to 110mA only when VOUT > 1V in sink mode or VCC − VOUT > 1V in source mode). It also features internal input ESD protection (±2kV HBM) and absolute maximum ratings covering −0.3V to +6V on VCC and GND-referenced pin limits.
MAX4335EXT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.8V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- 110 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
MAX4335EXT+T FAQ
1.How can I place an order for MAX4335EXT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4335EXT+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 MAX4335EXT+T reliable?
The price and inventory of MAX4335EXT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4335EXT+T is usually 5 days.
3.What payment methods are accepted for MAX4335EXT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4335EXT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4335EXT+T?
MAX4335EXT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4335EXT+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 MAX4335EXT+T?
For technical support, including MAX4335EXT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4335EXT+T requirements.
6.How does Aetrix verify that MAX4335EXT+T is sourced from the original manufacturer or authorized distributors?
All MAX4335EXT+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 MAX4335EXT+T meets industry standards.
7.What is the process for return or replacement of MAX4335EXT+T?
All MAX4335EXT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4335EXT+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 MAX4335EXT+T part is unused and in its original packaging.
Return procedure for MAX4335EXT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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