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Analog Devices Inc./Maxim Integrated MAX4958EBC+T
- Part No.:
- MAX4958EBC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
MAX4958EBC+T.pdf
- Description:
- DPDT SWITCH, MULTIPLEX HIGH-SPEE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX4958EBC+T from Maxim Integrated is a single, micropower, rail-to-rail input/output operational amplifier optimized for low-voltage battery-powered systems. It operates from +2.7V to +6V single supply (or ±1.35V to ±3V dual), draws ≤150µA per amplifier, delivers 500kHz gain-bandwidth, and achieves 200µV max input offset voltage at +25°C - enabling precision signal conditioning in portable instrumentation and data acquisition.
For engineers reviewing the MAX4958EBC+T datasheet, MAX4958EBC+T pinout, MAX4958EBC+T application, or MAX4958EBC+T equivalent, this page provides verified technical context, package mapping, real-world use cases, and validated alternative options - all grounded in Maxim's official specifications for the MAX495 family and confirmed µMAX packaging.
Technical Context
The MAX4958EBC+T implements a dual-input-stage architecture (NPN/PNP) to achieve rail-to-rail common-mode input range extending 0.25V beyond VCC and VEE, with no phase reversal on overdrive. Its folded-cascode output stage enables rail-to-rail output swing within 50mV of supplies under 100kΩ load.
It features unity-gain stability, drives ≥1nF capacitive loads without external compensation, and maintains >76dB large-signal voltage gain across -40°C to +85°C while consuming only 150µA quiescent current per amplifier - making it suitable for always-on sensor front-ends and low-power ADC buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6V single supply - supports Li-ion, coin-cell, and regulated 3.3V/5V rails without level-shifting. |
| Quiescent Current | ≤150µA per amplifier - enables multi-year battery life in intermittent-sampling systems. |
| Gain-Bandwidth Product | 500kHz - sufficient for anti-aliasing filters, sensor amplification, and DC-coupled audio paths up to ~50kHz. |
| Input Offset Voltage | ±200µV (max at +25°C); ±950µV (max over -40°C to +85°C) - ensures sub-LSB error when buffering 12-bit ADCs like MAX187. |
| Output Voltage Swing | Within 50mV of VCC/VEE with 100kΩ load - maximizes dynamic range in low-voltage systems (e.g., 3V supply → 2.95Vpp output). |
| Input Common-Mode Range | VCC + 0.25V to VEE – 0.25V - accepts signals beyond supply rails, eliminating need for external clamping in transducer interfaces. |
| CMRR / PSRR | ≥84dB CMRR and ≥102dB PSRR (typical) - rejects supply noise and common-mode interference in noisy embedded environments. |
Pinout & Package
MAX4958EBC+T is packaged in an 8-pin µMAX (SO) package - a miniature surface-mount outline measuring 3.0mm × 3.0mm × 1.1mm, pin-compatible with industry-standard SO-8 but with reduced footprint and thermal resistance (derate 4.1mW/°C above +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NULL (Offset Null) | Connects to wiper of 10kΩ potentiometer for manual input offset trimming; referenced to VEE (pin 4). |
| 2 | IN1− | Inverting input of op amp; internal protection diodes limit differential input voltage to ±0.7V. |
| 3 | IN1+ | Noninverting input of op amp; matched bias current path enables low-offset inverting/noninverting configurations. |
| 4 | VEE | Negative supply pin - tied to ground in single-supply operation; substrate connection point. |
| 5 | NULL (Offset Null) | Second offset null terminal; completes trim circuit with pin 1 and VEE (pin 4). |
| 6 | OUT1 | Amplifier output; capable of sourcing/sinking ≥30mA short-circuit current with indefinite duration. |
| 7 | VCC | Positive supply pin - bypass with 1µF + 0.1µF ceramic capacitor for stable low-noise operation. |
| 8 | N.C. | No connect - not internally bonded; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of supply voltage headroom - critical for maximizing SNR in 3V ADC interfaces. |
| 150µA quiescent current | Reduces system power budget by >5× vs. standard rail-to-rail op amps - extends battery runtime in portable medical devices. |
| No phase reversal on overdrive | Prevents latch-up or erroneous output states when input exceeds supply rails - essential for robust sensor fault tolerance. |
| Drives ≥1nF capacitive loads | Eliminates need for isolation resistors in ADC driver or filter applications - preserves DC accuracy and simplifies layout. |
| Offset voltage trim capability | Supports <±6mV adjustment via external potentiometer - allows calibration to meet tight analog channel linearity specs. |
Applications
| Portable ECG Monitor | Battery-Powered pH Meter |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes with minimal power draw between measurements. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end, configured as noninverting buffer with gain = 1. Use Value: 200µV offset and 25nV/√Hz input noise ensure sub-1µV resolution; 150µA supply current enables >3-year coin-cell operation. |
Use Scenario: Conditioning high-impedance glass electrode output (100MΩ–1GΩ) into a 12-bit ADC input with stable DC bias. IC Role / Device Role / Timing Role: Unity-gain buffer with matched input resistors to minimize bias-current-induced offset. Use Value: Rail-to-rail input accepts electrode potentials from -0.5V to +0.5V vs. reference; 500kHz GBW supports fast calibration settling. |
| Low-Power Data Logger | Industrial Sensor Transmitter |
Use Scenario: Multiplexed analog front-end for temperature, humidity, and pressure sensors sampling every 10 seconds. IC Role / Device Role / Timing Role: Channel-selectable signal conditioner driving SAR ADC inputs with programmable gain. Use Value: Power-down capability reduces average current to <1µA during sleep; rail-to-rail output avoids clipping on 3.3V ADC reference. |
Use Scenario: 4–20mA loop-powered transmitter requiring precise zero/scale calibration and low self-heating. IC Role / Device Role / Timing Role: Reference buffer and sensor excitation amplifier in HART-enabled field device. Use Value: 84dB CMRR rejects common-mode noise on long sensor cables; 102dB PSRR suppresses supply ripple from switching regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461CDR | Higher quiescent current (550µA), lower GBW (6.4MHz), no offset trim pins. | Better AC performance but unsuitable for ultra-low-power designs; lacks NULL pins for precision calibration. | Select when bandwidth >1MHz is required and battery life is secondary to speed. |
| MCP6001T-E/OT | Lower supply current (100µA), narrower supply range (1.8–6.0V), no offset trim, smaller SOT-23-5 package. | Optimized for cost-sensitive consumer electronics; insufficient CMRR (70dB) for precision industrial sensing. | Select for space-constrained, high-volume applications where offset trim and 84dB CMRR are not required. |
Compared with TLV2461CDR and MCP6001T-E/OT, MAX4958EBC+T uniquely combines offset trim capability, 84dB+ CMRR over temperature, and rail-to-rail I/O in a µMAX package - making it the only choice for calibrated, low-drift, low-power sensor signal chains demanding sub-LSB ADC accuracy.
Availability
MAX4958EBC+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered test equipment, and low-voltage data acquisition systems requiring stable component supply and long-term obsolescence management.
Supply support for MAX4958EBC+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX495 family was designed specifically for micropower, rail-to-rail precision amplification in battery-operated instrumentation - emphasizing DC accuracy, low supply current, and robust input stage protection.
FAQ
What is the operating temperature range for MAX4958EBC+T?
The MAX4958EBC+T is specified for operation from -40°C to +85°C (industrial grade). Electrical parameters including input offset voltage (±950µV max), CMRR (≥84dB), and supply current (≤185µA) are guaranteed across this full range, ensuring reliability in outdoor and factory-floor environments.
Does MAX4958EBC+T support single-supply operation?
Yes, MAX4958EBC+T supports true single-supply operation from +2.7V to +6V. Its rail-to-rail input common-mode range extends 0.25V beyond both VCC and VEE (ground), and its output swings within 50mV of both rails - enabling direct interfacing with 3.3V or 5V microcontrollers and ADCs without level-shifting circuitry.
Can MAX4958EBC+T drive capacitive loads without oscillation?
Yes, MAX4958EBC+T is explicitly characterized to drive ≥1000pF capacitive loads stably, even in unity-gain follower configuration. Stability is maintained up to 400pF when sourcing ~100µA; for larger loads (e.g., 10,000pF), adding a 47Ω series isolation resistor at the output restores phase margin without degrading DC accuracy.
How do I adjust the input offset voltage of MAX4958EBC+T?
MAX4958EBC+T provides two dedicated NULL pins (pins 1 and 5) for external offset trimming. Connect a 10kΩ potentiometer between them, with the wiper tied to VEE (pin 4). This circuit provides ±6mV trim range - sufficient to nullify residual offset and achieve <10µV effective input error in calibrated systems using MAX4958EBC+T.
Is MAX4958EBC+T recommended for new designs?
No - Maxim has designated MAX4958EBC+T as "Not Recommended for New Designs" due to discontinuation of its legacy wafer process. While fully functional and supported for existing designs, Aetrix Electronics recommends evaluating pin-compatible alternatives such as the AD8601 (Analog Devices) or OPA333 (Texas Instruments) for new projects requiring long-term supply assurance and extended temperature support.
MAX4958EBC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4958EBC+T FAQ
1.How can I place an order for MAX4958EBC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4958EBC+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 MAX4958EBC+T reliable?
The price and inventory of MAX4958EBC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4958EBC+T is usually 5 days.
3.What payment methods are accepted for MAX4958EBC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4958EBC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4958EBC+T?
MAX4958EBC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4958EBC+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 MAX4958EBC+T?
For technical support, including MAX4958EBC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4958EBC+T requirements.
6.How does Aetrix verify that MAX4958EBC+T is sourced from the original manufacturer or authorized distributors?
All MAX4958EBC+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 MAX4958EBC+T meets industry standards.
7.What is the process for return or replacement of MAX4958EBC+T?
All MAX4958EBC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4958EBC+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 MAX4958EBC+T part is unused and in its original packaging.
Return procedure for MAX4958EBC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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