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Analog Devices Inc./Maxim Integrated MAX4165EUK
- Part No.:
- MAX4165EUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4165EUK.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:19,380
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Product details
Overview
MAX4165EUK from Maxim Integrated is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage, high-output-drive applications. It delivers ±80mA output current, operates from +2.7V to +6.5V single supply, features 5MHz gain-bandwidth product and 250µV typical offset voltage, and is housed in a 5-pin SOT23 package - ideal for portable headphone drivers and battery-powered audio systems.
For engineers reviewing the MAX4165EUK datasheet, MAX4165EUK pinout, MAX4165EUK application, or MAX4165EUK equivalent, key selection criteria include guaranteed ±80mA drive at 25°C, rail-to-rail I/O swing with <430mV headroom at VCC = 5V/25Ω, shutdown capability (not present on this variant), 1.2mA quiescent current, and -40°C to +85°C industrial temperature range.
Technical Context
The MAX4165EUK employs a dual-input-stage architecture (NPN/PNP) enabling rail-to-rail common-mode input range extending 0.25V beyond supply rails. Its output stage supports full swing to within millivolts of VEE and ≤430mV of VCC under 25Ω load, with unity-gain stability up to 250pF capacitive load.
DC precision is maintained via 63–90dB CMRR and 72–86dB PSRR over temperature, while AC performance includes 5MHz GBWP, 21V/µs slew rate, and <0.02% THD+N at 1kHz into 32Ω. It lacks shutdown functionality - confirmed by ordering guide and pin description.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6.5V single supply - enables direct integration into Li-ion (3.0–4.2V) and 3.3V/5V systems without level-shifting. |
| Output Drive Current | ±80mA min - sufficient to directly drive 32Ω headphones or small speakers without external buffers. |
| Gain-Bandwidth Product | 5MHz - supports audio bandwidth extension beyond 20kHz with adequate phase margin for stable closed-loop operation. |
| Input Offset Voltage | 0.35mV (typ), 4.3mV (max @ -40°C to +85°C) - ensures low DC error in precision signal conditioning and DAC buffering. |
| Rail-to-Rail I/O Swing | VOL ≤25mV @ VCC=5V/RL=100kΩ; VOH ≥VCC-430mV @ VCC=5V/RL=25Ω - maximizes dynamic range in single-supply audio paths. |
| Quiescent Supply Current | 1.2mA (typ @ VCC=3V) - balances performance and battery life in portable devices. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive cabin-ambient environments. |
Pinout & Package
MAX4165EUK is packaged in a 5-pin SOT23 (SOT23-5) surface-mount package, footprint-compatible with industry-standard 5-lead SC-70 variants but with distinct pin assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers ±80mA; rail-to-rail swing; high-impedance state not supported (no shutdown). |
| 2 - IN− | Inverting input | Differential pair node; protected by 1kΩ series resistors and back-to-back diodes. |
| 3 - IN+ | Noninverting input | Differential pair node; common-mode range extends VEE−0.25V to VCC+0.25V. |
| 4 - VEE | Negative supply / ground | Reference for single-supply operation; tied to system GND in most portable designs. |
| 5 - VCC | Positive supply | Accepts +2.7V to +6.5V; requires local 0.1µF ceramic + ≥1µF bulk bypassing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.25V beyond VEE and VCC - eliminates need for input biasing networks in single-supply sensor interfaces. |
| High output current drive | Guaranteed ±80mA minimum - enables direct driving of low-impedance loads (e.g., 32Ω headphones, piezo elements) without discrete boost stages. |
| Capacitive load stability | Stable with up to 250pF - simplifies layout for PCB traces and long cables without isolation resistors in most cases. |
| Precision DC performance | 250µV typical offset, 120dB open-loop gain - supports accurate DC-coupled amplification and low-error DAC output buffering. |
| Low-power operation | 1.2mA quiescent current @ 3V - extends battery runtime in always-on audio monitoring or portable instrumentation. |
Applications
| Portable Headphone Driver | Single-Supply DAC Buffer |
|---|---|
Use Scenario: Driving 16–32Ω stereo headphones from a 3.3V microcontroller-based audio subsystem. IC Role / Device Role: Single-ended output buffer with rail-to-rail swing and high current delivery. Use Value: Eliminates coupling capacitors and external MOSFET stages, reducing BOM count and board area by >30%. |
Use Scenario: Buffering a 12-bit DAC output in a battery-powered data logger requiring DC accuracy and low noise. IC Role / Device Role: Precision voltage follower with low offset and high PSRR. Use Value: Maintains <0.5 LSB error across full temperature range while consuming only 1.2mA. |
| Set-Top Box Audio Output | Laptop Line-Out Amplifier |
Use Scenario: Boosting line-level analog audio (2Vrms) to drive powered speakers or AV receivers in consumer STBs. IC Role / Device Role: High-swing, low-distortion output driver. Use Value: Delivers >100mW into 47kΩ loads with <0.02% THD+N at 1kHz, meeting CE/IEC60958 compliance margins. |
Use Scenario: Amplifying DAC output to drive 10kΩ line inputs in thin-and-light notebooks with strict thermal constraints. IC Role / Device Role: Low-noise, thermally efficient op amp with rail-to-rail output. Use Value: Achieves 105dB SNR and dissipates <120mW at full output, avoiding localized hot spots on compact PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, high-output-drive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1678IDR | Lower output current (±35mA), higher GBWP (10MHz), no rail-to-rail input, SOIC-8 package. | Better suited for low-distortion preamp stages than speaker/headphone drive. | Select when priority is ultra-low THD (<0.0001%) over output current; requires dual supply or level-shifting for true rail-to-rail input. |
| TS912IDT | Lower drive (±60mA), lower GBWP (1.4MHz), rail-to-rail I/O, same SOT23-5 package, wider temp range (-40°C to +125°C). | More appropriate for cost-sensitive industrial sensors where speed is secondary to ruggedness. | Choose when extended temperature operation or AEC-Q200 qualification is required; trade-off is 25% less output current and slower response. |
Compared with OPA1678IDR and TS912IDT, the MAX4165EUK uniquely combines ±80mA drive, 5MHz GBWP, rail-to-rail I/O, and SOT23-5 packaging - making it the only option among the three capable of direct 32Ω headphone drive without external components while maintaining <0.02% THD+N.
Availability
MAX4165EUK is available at Aetrix Electronics and suitable for portable audio systems, battery-powered instrumentation, and industrial sensor signal conditioning requiring stable component supply, consistent parametric performance across temperature, and long-term manufacturing continuity.
Supply support for MAX4165EUK 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4165EUK belongs to the MAX4165–MAX4169 family - engineered specifically for low-voltage, high-output-drive, rail-to-rail op amp applications in space-constrained portable electronics where precision, power efficiency, and robust output capability are simultaneously critical.
FAQ
Does the MAX4165EUK have a shutdown pin?
No, the MAX4165EUK does not include a shutdown function. The shutdown feature is exclusive to the MAX4166/MAX4168 variants (e.g., MAX4166EUA), as confirmed by the Selector Guide and Pin Description tables. The MAX4165EUK pinout contains only five terminals: OUT, IN−, IN+, VEE, and VCC - with no SHDN pin allocated.
What is the maximum capacitive load the MAX4165EUK can drive stably?
The MAX4165EUK is unity-gain stable with capacitive loads up to 250pF, as specified in the Features list and verified in Figure 8 (Capacitive-Load Stability). For loads exceeding 250pF, an isolation resistor (e.g., 10–39Ω) in series with the output is recommended to maintain phase margin and prevent peaking or oscillation.
Is the MAX4165EUK pin-compatible with other op amps in the SOT23-5 package?
No - the MAX4165EUK uses a nonstandard SOT23-5 pinout (OUT/IN−/IN+/VEE/VCC). It is not pin-compatible with generic SOT23-5 op amps like the LMV321 or MCP6001, which follow the industry-standard configuration (VCC/IN+/IN−/OUT/VEE). PCB layout must adhere strictly to the MAX4165EUK's unique pin mapping.
What is the guaranteed output voltage swing for the MAX4165EUK at 5V supply and 25Ω load?
At VCC = 5V and RL = 25Ω, the MAX4165EUK guarantees VOH ≥ VCC − 430mV (i.e., ≥4.57V) and VOL ≤ 350mV (i.e., ≤0.35V), per the DC Electrical Characteristics table. This 4.22V output swing enables >90% utilization of the 5V rail in single-supply audio output stages.
How is the MAX4165EUK tested for temperature specifications?
The MAX4165EUK is 100% tested at +25°C per Note 4 in the datasheet. All temperature limits (−40°C to +85°C) are guaranteed by design - meaning parameters such as offset voltage, CMRR, and output drive are characterized and modeled across temperature, but final unit testing occurs only at room temperature.
MAX4165EUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 350 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- 125 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4165EUK FAQ
1.How can I place an order for MAX4165EUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4165EUK 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 MAX4165EUK reliable?
The price and inventory of MAX4165EUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4165EUK is usually 5 days.
3.What payment methods are accepted for MAX4165EUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4165EUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4165EUK?
MAX4165EUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4165EUK 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 MAX4165EUK?
For technical support, including MAX4165EUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4165EUK requirements.
6.How does Aetrix verify that MAX4165EUK is sourced from the original manufacturer or authorized distributors?
All MAX4165EUK 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 MAX4165EUK meets industry standards.
7.What is the process for return or replacement of MAX4165EUK?
All MAX4165EUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX4165EUK, 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 MAX4165EUK part is unused and in its original packaging.
Return procedure for MAX4165EUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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