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Analog Devices Inc./Maxim Integrated MAX4353EKA
- Part No.:
- MAX4353EKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4353EKA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,909
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Product details
Overview
MAX4353EKA from Maxim Integrated is a dual, high-speed, voltage-feedback operational amplifier compensated for minimum closed-loop gain of +5V/V, delivering 80MHz -3dB bandwidth, 240V/µs slew rate, and 620µA supply current per amplifier. It operates from a single +2.7V to +5.25V rail, features rail-to-rail outputs, and is housed in an 8-pin SOT23 package - ideal for battery-powered instrumentation and portable communications requiring stable gain and fast transient response.
For engineers reviewing the MAX4353EKA datasheet, MAX4353EKA pinout, MAX4353EKA application, or MAX4353EKA equivalent, this page provides verified electrical specifications, validated dual-amplifier pin functions, real-world use cases in keyless entry and baseband signal conditioning, and confirmed alternative parts with documented gain-bandwidth trade-offs.
Technical Context
The MAX4353EKA employs bipolar process technology and internal compensation optimized for stable operation at AVCL ≥ +5V/V, distinguishing it from unity-gain-stable MAX4453 variants. Its 240V/µs slew rate and 8ns rise/fall time support fast pulse fidelity in ADC input buffering and active filter stages.
Designed for single-supply systems, it achieves rail-to-rail output swing (within 180mV of rails at 1kΩ load) and ground-sensing input common-mode range (VEE − 0.1V to VCC − 1.5V), enabling full dynamic range utilization in low-voltage, wide-bandwidth signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 80MHz - supports video, baseband, and IF signal amplification up to 80MHz without gain roll-off |
| Slew Rate | 240V/µs - enables clean 2V-step reproduction in under 8.3ns, critical for high-fidelity pulse amplification |
| Supply Current | 620µA per amplifier - allows dual-channel operation on <1.3mA total, suitable for extended battery life |
| Input Offset Voltage | 0.4–12mV - ensures DC accuracy in precision sensor interfaces and low-gain signal conditioning |
| Output Swing | Within 180mV of rails (VCC/VEE) at 1kΩ - maximizes usable output voltage headroom in 3V systems |
| Common-Mode Rejection | 60–100dB - maintains signal integrity against power-supply noise and shared-impedance coupling |
| THD @ 1MHz | −68dB - preserves signal purity in audio and communication baseband paths |
Pinout & Package
MAX4353EKA is packaged in an 8-pin SOT23 (SOIC-thin variant), measuring 2.80mm × 2.95mm × 1.45mm, with gull-wing leads and JEDEC MO-178 compliance. The package supports reflow soldering and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives loads up to 22mA sourcing/sinking; requires isolation resistor for >22pF capacitive loads |
| 2 | INA− | Inverting input of Amplifier A - high-impedance node; sensitive to layout parasitics above 10MHz |
| 3 | INA+ | Noninverting input of Amplifier A - accepts common-mode voltages down to VEE − 0.1V |
| 4 | VEE | Negative supply (ground reference) - must be decoupled with 0.1µF ceramic capacitor near pin |
| 5 | VCC | Positive supply (2.7V–5.25V) - bypassing essential for stability; PSRR = 60–70dB across 10kHz–100MHz |
| 6 | INB− | Inverting input of Amplifier B - electrically isolated from INA−; crosstalk ≤ −74dB at 1MHz |
| 7 | INB+ | Noninverting input of Amplifier B - matched offset voltage ±1mV vs. Amplifier A for dual-channel tracking |
| 8 | OUTB | Amplifier B output - independent channel; identical AC performance and drive capability as OUTA |
Key Features
| Feature | Design Value |
|---|---|
| Gain-stable at AVCL ≥ +5V/V | Eliminates need for external compensation in fixed-gain circuits, reducing BOM count and layout area |
| Rail-to-rail output swing | Delivers >95% of full supply range at 1kΩ load, maximizing SNR in 3V data acquisition systems |
| Ultra-low 620µA quiescent current | Enables always-on signal monitoring in keyless entry receivers without compromising battery lifetime |
| 80MHz bandwidth with 4MHz 0.1dB flatness | Preserves amplitude accuracy across multi-MHz baseband signals in portable comms transceivers |
| Bipolar input stage | Provides 0.5pA/√Hz input current noise - optimal for low-source-impedance sensor interfaces |
Applications
| Battery-Powered Instrumentation | Cellular Telephone Baseband |
|---|---|
|
Use Scenario: Portable multimeter front-end amplifying µV-level thermocouple or strain gauge signals. IC Role / Device Role / Timing Role: Dual-channel precision gain block with matched offset for differential sensing and auto-zero calibration. Use Value: 620µA per amplifier enables >100-hour runtime on coin-cell; rail-to-rail output captures full sensor range without level-shifting. |
Use Scenario: I/Q channel amplification in GSM/EDGE handset baseband section prior to DAC or RF upconversion. IC Role / Device Role / Timing Role: Fixed-gain (+5V/V) driver ensuring flat frequency response across 0–4MHz voice band. Use Value: 4MHz 0.1dB gain flatness prevents intermodulation distortion; THD < −68dB maintains EVM compliance. |
| Keyless Entry Receiver Signal Chain | Portable Communications Transceiver |
|
Use Scenario: Amplifying weak ASK/OOK demodulated pulses from 315/433MHz RF receiver ICs. IC Role / Device Role / Timing Role: High-slew-rate comparator preamplifier shaping digital pulses before microcontroller GPIO sampling. Use Value: 240V/µs slew rate resolves 100ns pulse edges; 8ns rise time ensures accurate timing recovery in sub-1ms wake-up sequences. |
Use Scenario: Low-power line driver in Bluetooth/Wi-Fi module analog interface, driving ADC inputs or RF modulator bias networks. IC Role / Device Role / Timing Role: Dual-channel buffer isolating mixed-signal sections while maintaining signal integrity at 20MHz clock harmonics. Use Value: −74dB crosstalk prevents channel coupling; 15nV/√Hz voltage noise preserves SNR in 12-bit ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4453EKA-T | Unity-gain stable; 200MHz bandwidth, 95V/µs slew rate, same 620µA supply current | Preferred for variable-gain or unity-gain buffer roles; unsuitable for fixed +5V/V without external compensation | Select MAX4453EKA-T when circuit requires AVCL = 1V/V or wider bandwidth; verify stability with feedback network. |
| OPA2350EA/250 | CMOS input; 38MHz GBW, 22V/µs slew rate, 5.5mA supply current per amp | Higher power, lower speed, rail-to-rail I/O - suited for precision DC-coupled sensors, not RF/baseband | Choose OPA2350EA/250 only for ultra-low input bias (<0.5pA) requirements where speed and power are secondary. |
Compared with MAX4353EKA, MAX4453EKA-T offers higher bandwidth but requires different gain configuration, while OPA2350EA/250 trades speed and efficiency for CMOS input advantages - selection depends strictly on required gain, bandwidth, and input-stage topology.
Availability
MAX4353EKA is available at Aetrix Electronics and suitable for battery-powered instrumentation, cellular telephone baseband, and keyless entry systems requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for MAX4353EKA 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 demanding industrial, automotive, and communications applications.
The MAX435x family targets low-power, high-speed signal conditioning in portable and battery-operated systems - emphasizing gain stability, rail-to-rail operation, and minimal quiescent current without sacrificing bandwidth.
FAQ
What is the minimum stable closed-loop gain for MAX4353EKA?
The MAX4353EKA is internally compensated for minimum closed-loop gain of +5V/V. Operating at gains below +5V/V may cause instability, peaking, or oscillation. For unity-gain or lower-gain configurations, use the MAX4453EKA-T instead, which is unity-gain stable and shares the same pinout and package.
Does MAX4353EKA support rail-to-rail input operation?
No - MAX4353EKA features ground-sensing input with common-mode range from (VEE − 0.1V) to (VCC − 1.5V). It does not accept inputs within 1.5V of VCC, limiting true rail-to-rail input capability. However, its rail-to-rail output swing (within 180mV of both rails at 1kΩ) remains fully functional for single-supply signal chain design.
Can MAX4353EKA drive capacitive loads directly?
MAX4353EKA is not optimized for direct capacitive loading. Driving >22pF without isolation risks instability due to phase margin degradation. Always use a series isolation resistor (RISO) between output and capacitive load - values range from 10Ω to 30Ω depending on load capacitance, per Figure 2 in the datasheet.
What is the typical input offset voltage matching between amplifiers in MAX4353EKA?
MAX4353EKA guarantees input offset voltage matching of ±1mV between its two amplifiers (INA+/INA− vs. INB+/INB−) over temperature. This tight matching supports differential signal processing, active filtering, and dual-channel calibration schemes where inter-amplifier drift must be minimized.
Is MAX4353EKA pin-compatible with other devices in the MAX435x/MAX445x family?
Yes - MAX4353EKA shares identical 8-pin SOT23 pinout with MAX4453EKA-T, MAX4353ESA, and MAX4453ESA. All variants route OUTA, INA−, INA+, VEE, VCC, INB−, INB+, and OUTB to the same pins, enabling drop-in replacement where gain stability and bandwidth requirements align.
MAX4353EKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 240V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 80 MHz
- Current - Input Bias:
- 800 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 620µA (x2 Channels)
- Current - Output / Channel:
- 22 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX4353EKA FAQ
1.How can I place an order for MAX4353EKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4353EKA 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 MAX4353EKA reliable?
The price and inventory of MAX4353EKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4353EKA is usually 5 days.
3.What payment methods are accepted for MAX4353EKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4353EKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4353EKA?
MAX4353EKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4353EKA 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 MAX4353EKA?
For technical support, including MAX4353EKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4353EKA requirements.
6.How does Aetrix verify that MAX4353EKA is sourced from the original manufacturer or authorized distributors?
All MAX4353EKA 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 MAX4353EKA meets industry standards.
7.What is the process for return or replacement of MAX4353EKA?
All MAX4353EKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4353EKA, 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 MAX4353EKA part is unused and in its original packaging.
Return procedure for MAX4353EKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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