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Analog Devices Inc./Maxim Integrated MAX4198ESA
- Part No.:
- MAX4198ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4198ESA.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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Product details
Overview
MAX4198ESA from Maxim Integrated is a micropower, single-supply, rail-to-rail precision differential amplifier with factory-trimmed +1V/V gain, 0.01% gain error, 30µV input offset voltage, and 42µA supply current. It operates from +2.7V to +7.5V, delivers 175kHz −3dB bandwidth, and drives 5kΩ loads to within 100mV of each rail - ideal for low-power instrumentation and transducer interface circuits in portable equipment.
For engineers reviewing the MAX4198ESA datasheet, MAX4198ESA pinout, MAX4198ESA application, or MAX4198ESA equivalent, key selection criteria include its Beyond-the-Rails™ input common-mode range (extending 100mV beyond rails), shutdown mode (6.5µA current), DC CMR of 90dB, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4198ESA implements a precision differential amplifier architecture using internally trimmed, matched resistors to achieve fixed +1V/V gain without external components. Its input stage supports common-mode voltages from VEE − 0.1V to VCC + 0.1V, enabled by resistor-divider extension - distinct from the MAX4199's VEE − 0.1V to VCC − 1.0V range.
It features an active-low SHDN pin referenced to VCC (VIH = VCC − 1.5V, VIL = VCC − 2.5V), enabling fast 35µs enable/disable settling and high-impedance output during shutdown. The rail-to-rail output stage uses a common-source structure to deliver ±100mV swing into 5kΩ at both rails under full temperature range (−40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +1V/V (factory-trimmed, fixed, no external resistors required) |
| Gain Error | ±0.01% (ensures high-accuracy differential signal amplification without calibration) |
| Supply Current | 42µA (enables multi-year battery life in portable sensing systems) |
| −3dB Bandwidth | 175kHz (supports DC–audio-frequency signal conditioning for data acquisition) |
| Input Offset Voltage | ±30µV (typ), ±2300µV (max) - enables µV-level signal resolution in precision measurement) |
| DC Common-Mode Rejection | 90dB (rejects low-frequency interference in noisy industrial environments) |
| Operating Temperature | −40°C to +85°C (qualified for industrial and automotive cabin applications) |
Pinout & Package
The MAX4198ESA is housed in an 8-pin SO (Small Outline) package, compatible with standard surface-mount assembly processes and offering improved thermal performance over µMAX variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference voltage input | Sets output common-mode level; tied to VCC/2 for bipolar output swing in single-supply operation |
| IN+ (Pin 3) | Noninverting input | Accepts differential input signals; input impedance ≈50kΩ (typ) for MAX4198 |
| IN− (Pin 2) | Inverting input | Completes differential pair; input impedance ≈25kΩ (typ); must not be left floating or shorted to OUT |
| FB (Pin 5) | Feedback resistor node | Internal connection point for gain-setting network; usable as sense input in custom configurations |
| OUT (Pin 6) | Amplifier output | Rail-to-rail capable; high-impedance during shutdown; drives ≥5kΩ load to within 100mV of rails |
| VCC (Pin 7) | Positive supply | Accepts +2.7V to +7.5V single supply or +3.75V dual supply; requires local 0.1µF bypass capacitor |
| VEE (Pin 4) | Negative supply / ground reference | Connected to GND in single-supply mode; supports dual ±1.35V to ±3.75V operation |
| SHDN (Pin 8) | Active-low shutdown control | Logic threshold referenced to VCC (VIH = VCC − 1.5V, VIL = VCC − 2.5V); reduces ICC to 6.5µA |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ input range | Extends 100mV beyond VEE and VCC without phase reversal or CMR degradation (at VCC = 5V) |
| Rail-to-rail output stage | Swings to within 100mV of both rails into 5kΩ, maximizing dynamic range in low-voltage systems |
| Ultra-low power consumption | 42µA quiescent current enables >10-year battery life in always-on sensor nodes |
| Integrated precision gain resistors | Factory-trimmed 0.01% gain error eliminates external resistor matching and layout sensitivity |
| Shutdown mode with fast recovery | 6.5µA shutdown current and 35µs enable/disable settling support duty-cycled power management |
Applications
| Instrumentation Amplifier Building Block | Differential Voltage Amplifier |
|---|---|
|
Use Scenario: Used as front-end gain stage in a 3-op-amp instrumentation amplifier with ultra-low bias current op amps (e.g., MAX406A). IC Role / Device Role / Timing Role: Provides fixed +1V/V differential gain and common-mode rejection before final output buffering. Use Value: Eliminates resistor matching errors and reduces board area versus discrete resistor networks while maintaining 90dB DC CMR. |
Use Scenario: Amplifying millivolt-level thermocouple or bridge sensor outputs in handheld test equipment. IC Role / Device Role / Timing Role: Precision differential-to-single-ended conversion with rail-to-rail output swing for ADC input scaling. Use Value: Delivers 175kHz bandwidth and ±30µV offset to resolve sub-µV signals without external trimming or calibration. |
| Portable/Battery-Powered Equipment | Transducer Interface |
|
Use Scenario: Signal conditioning in wearable health monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power analog front-end for ECG or bioimpedance sensing with shutdown between measurements. Use Value: 42µA operating current and 6.5µA shutdown current extend battery life to >3 years in intermittent-sampling designs. |
Use Scenario: Interfacing strain-gauge load cells in industrial weighing terminals with single +3.3V supply. IC Role / Device Role / Timing Role: High-CMR differential amplifier rejecting power-line noise and supply ripple on unshielded cables. Use Value: 90dB DC CMR and 74dB PSR ensure stable 16-bit measurement accuracy despite 100mV supply variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4198EUA | Identical electrical specs but in 8-pin µMAX package (3mm × 3mm vs. SO-8's 4.9mm × 6.0mm) | Preferred for ultra-dense PCBs; lower thermal resistance but requires fine-pitch reflow | Select MAX4198EUA only when board area is constrained and µMAX assembly capability exists. |
| AD8276ARZ | +1V/V fixed gain, 50µA supply current, 350kHz bandwidth, ±200µV max VOS, SO-8 package | Better bandwidth and lower offset drift, but lacks Beyond-the-Rails™ input and higher quiescent current | Choose AD8276ARZ when higher speed or tighter VOS drift (±0.3µV/°C) is critical, accepting 20% higher ICC. |
Compared with MAX4198EUA, the MAX4198ESA offers identical performance in a more manufacturable SO-8 footprint; versus AD8276ARZ, it trades bandwidth and drift for micropower operation and extended input range - making it optimal for long-life, low-voltage, rail-sensitive applications.
Availability
MAX4198ESA is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and battery-powered data loggers requiring stable component supply across extended production lifecycles.
Supply support for MAX4198ESA 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 industrial, medical, and communications applications.
The MAX4198ESA belongs to Maxim's micropower precision amplifier product line, engineered specifically for single-supply, rail-to-rail signal conditioning in energy-constrained systems where accuracy, size, and supply flexibility are critical.
FAQ
What is the maximum input common-mode voltage range for the MAX4198ESA?
The MAX4198ESA supports an input common-mode voltage range extending 100mV beyond the supply rails (VEE − 0.1V to VCC + 0.1V at VCC = 5V), enabled by its Beyond-the-Rails™ architecture. This allows direct interfacing with sensors whose output exceeds the supply range without clipping or phase reversal - a capability confirmed in the MAX4198ESA datasheet's Typical Operating Characteristics and Pin Description sections.
Does the MAX4198ESA require external gain-setting resistors?
No, the MAX4198ESA does not require external gain-setting resistors. It integrates factory-trimmed, precision-matched internal resistors to deliver a fixed +1V/V differential gain with ±0.01% error. This eliminates resistor matching errors, layout sensitivity, and board space typically needed for discrete difference amplifier configurations - a key feature explicitly stated in the General Description and Detailed Description sections of the MAX4198ESA datasheet.
What is the shutdown behavior of the MAX4198ESA?
The MAX4198ESA enters low-power shutdown when the SHDN pin is pulled to VCC − 2.5V (logic low), reducing supply current to 6.5µA (max). During shutdown, the output goes high-impedance, and the device recovers in 35µs. SHDN logic thresholds are referenced to VCC - not ground - ensuring robust operation across varying supply voltages, as verified in the Electrical Characteristics tables for both +3V and +5V supplies.
Can the MAX4198ESA drive capacitive loads, and what is its stability limit?
Yes, the MAX4198ESA is designed to drive capacitive loads up to 690pF without oscillation, as confirmed by the CL = 690pF pulse response plot (MAX4198toc16). For loads exceeding this, a series isolation resistor (15Ω–100Ω) between OUT and CL restores stability at the cost of reduced bandwidth and DC accuracy - guidance explicitly provided in the Applications Information section of the MAX4198ESA datasheet.
How does the MAX4198ESA differ from the MAX4199ESA?
The MAX4198ESA is a +1V/V fixed-gain differential amplifier with 30µV max input offset voltage and 175kHz bandwidth, while the MAX4199ESA provides +10V/V gain, 10µV max VOS, and 45kHz bandwidth. Their input common-mode ranges also differ: MAX4198ESA extends beyond rails (VEE − 0.1V to VCC + 0.1V), whereas MAX4199ESA is limited to VEE − 0.1V to VCC − 1.0V. These distinctions are clearly specified in the General Description, Electrical Characteristics, and Detailed Description sections.
MAX4198ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Beyond-the-Rails™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.07V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 175 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 45µA
- Current - Output / Channel:
- 5.5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 7.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4198ESA FAQ
1.How can I place an order for MAX4198ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4198ESA 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 MAX4198ESA reliable?
The price and inventory of MAX4198ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4198ESA is usually 5 days.
3.What payment methods are accepted for MAX4198ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4198ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4198ESA?
MAX4198ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4198ESA 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 MAX4198ESA?
For technical support, including MAX4198ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4198ESA requirements.
6.How does Aetrix verify that MAX4198ESA is sourced from the original manufacturer or authorized distributors?
All MAX4198ESA 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 MAX4198ESA meets industry standards.
7.What is the process for return or replacement of MAX4198ESA?
All MAX4198ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4198ESA, 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 MAX4198ESA part is unused and in its original packaging.
Return procedure for MAX4198ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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