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Analog Devices Inc./Maxim Integrated MAX4195ESA+
- Part No.:
- MAX4195ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4195ESA+.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
MAX4195ESA+ from Maxim Integrated is a fixed-gain, rail-to-rail, micropower instrumentation amplifier with G = +1V/V, designed for precision sensor signal conditioning in single-supply systems. It delivers 93µA quiescent current, ±0.01% gain error at +25°C, and operates from +2.7V to +7.5V. Its input common-mode range extends 200mV below ground and within 1.1V of VCC, enabling direct interfacing with low-voltage transducers in battery-powered medical and industrial equipment.
For engineers reviewing the MAX4195ESA+ datasheet, MAX4195ESA+ pinout, MAX4195ESA+ application, or MAX4195ESA+ equivalent, this page provides verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in Maxim's official electrical characteristics and functional descriptions for the MAX4195ESA+ variant.
Technical Context
The MAX4195ESA+ implements a three-op-amp topology with on-chip 25kΩ feedback resistors, delivering fixed +1V/V gain without external components. Its input stage supports rail-to-rail output swing (within 30mV of rails into 25kΩ) and accepts inputs down to VEE − 0.2V, enabling true single-supply operation with grounded sensors.
It integrates a dedicated SHDN pin that reduces supply current to 8µA while placing the output in high-impedance state. The REF pin allows precise output offset control, and its internal gain-setting eliminates resistor matching errors and temperature drift associated with external networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +1V/V (fixed, internal resistor network; no external RG required) |
| Supply Current | 93µA typical - enables multi-year battery life in portable diagnostics and loop-powered transmitters |
| Shutdown Current | 8µA typical - allows deep power-down between measurement cycles in energy-constrained IoT nodes |
| Input Offset Voltage | ±100µV max (−40°C to +85°C) - ensures sub-100µV baseline error in thermocouple or bridge amplification |
| CMRR | 95dB min at G = +1V/V (−40°C to +85°C) - rejects noise from shared ground paths in industrial 4–20mA systems |
| Bandwidth | 220kHz −3dB (G = +1V/V) - supports DC to ~100kHz sensor signals including strain gauge and RTD outputs |
| Input Voltage Range | VEE − 0.2V to VCC − 1.1V - accommodates 0V-referenced transducers without level-shifting circuitry |
Pinout & Package
MAX4195ESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard JEDEC MS-012AC outline (S8-5), 1.27mm pitch, and 5.0mm × 6.2mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Reference voltage input | Sets output DC offset; tied to VCC/2 for bipolar output swing around mid-supply |
| 2 (IN−) | Inverting input | Accepts differential input voltage; common-mode range extends to VEE − 0.2V |
| 3 (IN+) | Noninverting input | Primary sensor input node; matched to IN− for optimal CMRR |
| 4 (VEE) | Negative supply | Ground reference for single-supply operation; supports 0V connection |
| 5 (FB) | Feedback connection | Internally connected to OUT; not user-accessible - distinguishes MAX4195 from variable-gain MAX4194 |
| 6 (OUT) | Amplifier output | Rail-to-rail capable; swings within 30mV of VEE/VCC into 25kΩ load |
| 7 (VCC) | Positive supply | Accepts +2.7V to +7.5V; bypassing with 0.1µF capacitor to VEE required for stability |
| 8 (SHDN) | Shutdown control | Active-low logic input; pulls < VIL (VCC − 2.5V) to enter 8µA shutdown mode |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +1V/V gain architecture | Eliminates external gain-setting resistor, reducing BOM count, layout area, and thermal drift sources |
| Rail-to-rail input and output | Enables full dynamic range utilization with single +3.3V or +5V supply - no level-shifting needed for microcontroller ADCs |
| 8µA shutdown current | Supports duty-cycled sensing in portable ECG monitors or wireless sensor nodes with >10-year battery life |
| ±0.01% gain error (25°C) | Meets Class A accuracy requirements for calibrated pressure transmitters and medical thermistor interfaces |
| 115dB CMRR at G = +10V/V | Validated performance at higher gains confirms robust internal matching - critical for rejecting 50/60Hz interference in clinical environments |
Applications
| Medical Thermocouple Amplifier | 4–20mA Loop Transmitter Front-End |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K) in patient temperature monitors with single +3.3V supply and isolated ADC interface. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing fixed +1V/V gain, rail-to-rail output, and REF-based offset adjustment to match ADC input range. Use Value: Input common-mode range extending to VEE − 0.2V allows direct connection to grounded thermocouple junctions without bias resistors or op-amp level shifters. |
Use Scenario: Conditioning bridge or RTD sensor output before driving a 4–20mA current loop in industrial process controllers. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner converting mV-level sensor output to precise 0–2.5V range for DAC-controlled current source. Use Value: 93µA quiescent current and 8µA shutdown mode enable compliance with loop-powered device power budgets (<4mA total). |
| Battery-Powered Data Logger | Strain Gauge Bridge Amplifier |
Use Scenario: Long-term environmental monitoring using piezoresistive or capacitive sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Micropower instrumentation amplifier with shutdown control, enabling wake-on-event sampling every 10 seconds. Use Value: Shutdown current of 8µA reduces average system current to <1µA during sleep - extending 200mAh CR2032 battery life beyond 2 years. |
Use Scenario: Full-bridge strain gauge readout in portable load cells or structural health monitoring nodes. IC Role / Device Role / Timing Role: Fixed-gain amplifier with matched input impedance and high CMRR rejecting common-mode noise from excitation supply ripple. Use Value: ±100µV max input offset ensures <0.1% full-scale error at 10mV bridge output - meeting ISO 376 Class 0.5 calibration standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8220ARMZ | Fixed G = +10V/V; 125µA supply current; no shutdown; SO-8 package | Higher gain, no power gating - unsuitable for ultra-low-power cycling but better for high-sensitivity bridge sensors requiring >10× amplification | Select AD8220ARMZ only when gain > +1V/V is required and shutdown is unnecessary; verify REF pin compatibility and offset specs for your sensor range. |
| LTC6915CMS8#PBF | Digitally programmable gain (1–100V/V); 120µA supply current; SPI interface; MSOP-8 | Software-configurable gain enables adaptive range scaling but adds MCU overhead and layout complexity | Choose LTC6915CMS8#PBF when system requires multiple gain settings per channel; avoid if design prioritizes minimal component count and guaranteed 8µA shutdown. |
Compared with AD8220ARMZ and LTC6915CMS8#PBF, the MAX4195ESA+ uniquely combines fixed +1V/V gain, 8µA shutdown, and sub-100µV offset in a simple SO-8 footprint - making it optimal for cost-sensitive, battery-operated, single-gain sensor front-ends where simplicity and ultra-low standby power are mandatory.
Availability
MAX4195ESA+ is available at Aetrix Electronics and suitable for medical thermocouple amplifiers, 4–20mA loop transmitters, and battery-powered data loggers requiring stable component supply across extended production lifecycles.
Supply support for MAX4195ESA+ 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, medical, and communications applications.
The MAX4195ESA+ belongs to the MAX4194–MAX4197 family of micropower instrumentation amplifiers engineered specifically for low-voltage, single-supply sensor signal conditioning - emphasizing rail-to-rail operation, sub-100µV offset, and shutdown capability in portable and loop-powered systems.
FAQ
What is the gain configuration of the MAX4195ESA+?
The MAX4195ESA+ is a fixed-gain instrumentation amplifier with G = +1V/V, achieved via internal 25kΩ feedback resistors. Unlike the MAX4194, it requires no external gain-setting resistor (RG), simplifying layout and eliminating resistor-related drift. This configuration is explicitly confirmed in the "Selector Guide" and "Pin Configurations" sections of the MAX4194–MAX4197 datasheet, where MAX4195 is listed with "GAIN (V/V): +1" and "SHUTDOWN: Yes".
Does the MAX4195ESA+ support true rail-to-rail input operation?
Yes, the MAX4195ESA+ supports rail-to-rail output and near-rail-to-rail input: its input common-mode range extends from VEE − 0.2V to VCC − 1.1V. This allows the IN+ and IN− pins to accept signals as low as 200mV below ground - critical for interfacing with grounded thermocouples or bridge sensors without external biasing. This specification is guaranteed across −40°C to +85°C and appears in both the "Electrical Characteristics" table and "Detailed Description" section.
How does the shutdown function work on the MAX4195ESA+?
The MAX4195ESA+ features an active-low SHDN pin (Pin 8). When pulled below VIL = VCC − 2.5V, it disables internal amplifiers and reduces quiescent current to 8µA typical, placing the output in high-impedance state. Enable time from shutdown is 0.5ms (0.1% settling). This behavior is exclusive to MAX4195/MAX4196/MAX4197 - not present in MAX4194 - and is documented in the "Electrical Characteristics" table under "Shutdown Current" and "Enable Time From Shutdown".
What is the maximum capacitive load the MAX4195ESA+ can drive stably?
The MAX4195ESA+ is stable with capacitive loads up to 300pF, as specified in the "Electrical Characteristics" table under "Capacitive-Load Stability". Driving larger loads (e.g., >500pF) may cause ringing or oscillation; the datasheet recommends adding a series isolation resistor (e.g., 75Ω) between OUT and the load - though this introduces gain error due to voltage division with the load resistance. No derating or special compensation is required up to 300pF.
Can the MAX4195ESA+ be used with a single +3.3V supply?
Yes, the MAX4195ESA+ is fully specified for single-supply operation from +2.7V to +7.5V, including +3.3V. At VCC = +3.3V, it maintains 93µA supply current, rail-to-rail output swing (within 30mV of rails into 25kΩ), and input common-mode range from −0.2V to +2.2V. All key parameters - gain error, CMRR, and offset - are guaranteed across this supply range per the "Supply Voltage Range" entry and "Electrical Characteristics" test conditions.
MAX4195ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.06V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 220 kHz
- Current - Input Bias:
- 6 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 93µA
- Current - Output / Channel:
- -
- 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
MAX4195ESA+ FAQ
1.How can I place an order for MAX4195ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4195ESA+ 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 MAX4195ESA+ reliable?
The price and inventory of MAX4195ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4195ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4195ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4195ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4195ESA+?
MAX4195ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4195ESA+ 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 MAX4195ESA+?
For technical support, including MAX4195ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4195ESA+ requirements.
6.How does Aetrix verify that MAX4195ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4195ESA+ 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 MAX4195ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4195ESA+?
All MAX4195ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4195ESA+, 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 MAX4195ESA+ part is unused and in its original packaging.
Return procedure for MAX4195ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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