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Analog Devices Inc./Maxim Integrated MAX4195ESA+T
- Part No.:
- MAX4195ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4195ESA+T.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,475
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Product details
Overview
MAX4195ESA+T from Maxim Integrated is a fixed-gain, rail-to-rail, micropower instrumentation amplifier with G = +1V/V, 93µA quiescent current, ±0.01% gain error (TA = +25°C), and operation from +2.7V to +7.5V single supply. It delivers precision signal conditioning for low-level sensor outputs in battery-powered medical and industrial measurement systems.
For engineers reviewing the MAX4195ESA+T datasheet, MAX4195ESA+T pinout, MAX4195ESA+T application, or MAX4195ESA+T equivalent, key selection criteria include its shutdown capability (8µA), input common-mode range extending 200mV below ground, rail-to-rail output swing, 115dB CMRR at G = +10V/V (shared family spec), and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4195ESA+T implements a three-op-amp topology with on-chip 25kΩ feedback resistors that fix gain at +1V/V. Its input stage supports common-mode voltages from VEE − 0.2V to VCC − 1.1V, and its rail-to-rail output stage drives 25kΩ loads within 30mV of either rail.
Shutdown is controlled via the SHDN pin (Pin 7), reducing supply current to 8µA while placing the output in high-impedance state. The REF pin (Pin 1) sets output DC offset, enabling level-shifting for single-supply ADC interfacing without external bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +1V/V, fixed by internal 25kΩ resistors - eliminates external gain-setting components and layout sensitivity. |
| Supply Current | 93µA typical - enables multi-year battery life in portable sensors and remote monitors. |
| Shutdown Current | 8µA typical - allows periodic wake-up sampling without significant duty-cycle penalty. |
| Input Offset Voltage | ±100µV max (G = +1V/V, TA = TMIN to TMAX) - ensures <0.01% error in 10mV full-scale bridge measurements. |
| CMRR | 95dB min (G = +1V/V, TA = TMIN to TMAX) - rejects power-line interference in noisy industrial environments. |
| Bandwidth | 220kHz −3dB (G = +1V/V) - supports dynamic strain gauge and thermocouple signals up to ~35kHz usable bandwidth. |
| Input Voltage Range | VEE − 0.2V to VCC − 1.1V - accepts transducer outputs near ground without level-shifting circuitry. |
| Output Swing | Within 30mV of rails (RL = 25kΩ to VCC/2) - maximizes dynamic range into low-voltage ADCs like 12-bit SAR converters. |
Pinout & Package
MAX4195ESA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC outline (S8-5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Reference voltage input | Sets output DC bias; tied to VCC/2 for bipolar output swing or to ground for unipolar zero-referenced output. |
| 2 (IN−) | Inverting input | Accepts differential input voltage; high-impedance node (1000MΩ) minimizes loading on Wheatstone bridges. |
| 3 (IN+) | Noninverting input | Primary sensor input node; matched with IN− for optimal CMRR performance. |
| 4 (VEE) | Negative supply | Ground reference for single-supply operation; supports true 0V input common-mode. |
| 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; drives 25kΩ load to within 30mV of VCC or VEE - simplifies interface to precision ADCs. |
| 7 (SHDN) | Shutdown control | Active-low logic input; pulls low to reduce ICC to 8µA and place OUT in high-Z state. |
| 8 (VCC) | Positive supply | Accepts +2.7V to +7.5V; internal regulation enables stable operation across battery discharge curve. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +1V/V gain | Eliminates external resistor network and associated temperature drift, improving long-term calibration stability in field-deployed equipment. |
| Rail-to-rail I/O | Enables full utilization of 0–3.3V or 0–5V ADC input ranges without external level-shifting or clamping diodes. |
| 200mV below ground input range | Supports direct connection to grounded thermocouples or shunt-based current sensors without AC coupling or biasing. |
| 8µA shutdown current | Permits integration into ultra-low-power wake-on-event architectures, e.g., wireless sensor nodes with sub-1µA average current. |
| 115dB CMRR at G = +10V/V (family spec) | Indicates matched internal resistor network and layout symmetry - confirms high-precision design suitable for medical-grade ECG front-ends. |
Applications
| Thermocouple Amplifier | 4–20mA Loop Transmitter |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltage from K-type thermocouples in HVAC controllers and industrial ovens. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing cold-junction compensation-ready output referenced to system ground. Use Value: Input common-mode range down to VEE − 0.2V allows direct grounding of thermocouple negative leg, eliminating error-prone bias networks. | Use Scenario: Converting sensor output (e.g., pressure or temperature) to standardized 4–20mA current loop for PLC interfacing. IC Role / Device Role / Timing Role: Low-drift, low-power front-end amplifier driving voltage-to-current converter stage. Use Value: 93µA supply current and shutdown mode enable loop-powered designs compliant with intrinsic safety standards (e.g., IEC 60079-11). |
| Battery-Powered Data Logger | Bridge Amplifier for Strain Gauges |
Use Scenario: Signal conditioning in handheld environmental monitors logging temperature, humidity, and CO₂ over multi-day periods. IC Role / Device Role / Timing Role: Micropower analog front-end amplifying sensor outputs prior to 12-bit ADC sampling. Use Value: 8µA shutdown current extends CR2032 battery life beyond 5 years in sleep-dominated duty cycles. | Use Scenario: Amplifying mV-level differential output from 120Ω or 350Ω Wheatstone bridges in load cells and torque sensors. IC Role / Device Role / Timing Role: High-CMRR instrumentation amplifier rejecting lead-wire resistance errors and common-mode noise. Use Value: 95dB minimum CMRR at G = +1V/V ensures <0.02% measurement error in 10mV full-scale bridge outputs under 60Hz EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8221ARMZ | Higher supply current (350µA), wider supply range (±2.3V to ±18V), no shutdown, SO-8 package | Requires dual supply or charge pump for true rail-to-rail input; better for high-voltage industrial sensors | Select AD8221ARMZ when higher bandwidth (825kHz) and superior PSR (>100dB) outweigh micropower needs. |
| LTC6915CMS8#PBF | Digitally programmable gain (1–100V/V), 125µA supply current, no shutdown, MSOP-8 package | Requires SPI interface and microcontroller coordination; unsuitable for passive, set-and-forget sensor nodes | Choose LTC6915CMS8#PBF only when gain flexibility justifies added firmware complexity and board space for SPI routing. |
Compared with AD8221ARMZ and LTC6915CMS8#PBF, MAX4195ESA+T uniquely balances micropower operation (93µA), integrated shutdown (8µA), rail-to-rail I/O, and fixed +1V/V precision-making it optimal for space- and energy-constrained sensor interfaces where simplicity and longevity are critical.
Availability
MAX4195ESA+T is available at Aetrix Electronics and suitable for medical equipment, thermocouple amplifiers, and 4–20mA loop transmitters requiring stable component supply across extended production lifecycles.
Supply support for MAX4195ESA+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) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX4194–MAX4197 family was engineered specifically for low-power, single-supply sensor signal conditioning-targeting applications where rail-to-rail input/output, micropower consumption, and high DC precision are non-negotiable.
FAQ
What is the maximum supply voltage for MAX4195ESA+T?
The absolute maximum supply voltage (VCC to VEE) for MAX4195ESA+T is +8V. Operating outside the recommended +2.7V to +7.5V single-supply range may degrade precision specifications or reliability. For dual-supply use, the range is ±1.35V to ±3.75V, with corresponding derating of common-mode and output swing limits.
Does MAX4195ESA+T require external gain-setting resistors?
No. MAX4195ESA+T has on-chip 25kΩ feedback resistors that fix the gain at +1V/V. Unlike the MAX4194, it does not use pins 1 and 8 (RG−/RG+) for external resistor connection. This eliminates gain-setting tolerance errors and thermal drift contributions from external components, enhancing long-term accuracy in the MAX4195ESA+T.
How does the shutdown function work on MAX4195ESA+T?
The SHDN pin (Pin 7) is active-low. Pulling it below VIL (VCC − 2.5V) disables internal amplifiers, reducing supply current to 8µA typical and placing the output in high-impedance state. Release to VCC enables the device with 0.5ms enable time (0.1% settling). This behavior is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots for MAX4195ESA+T.
Can MAX4195ESA+T drive a 5kΩ load rail-to-rail?
Yes, but with reduced swing margin. With RL = 5kΩ tied to VCC/2, MAX4195ESA+T output swings within 100mV of each rail (VOL/VOH ≤ 100mV), versus 30mV with 25kΩ. This is specified in the Electrical Characteristics table under "Output Voltage Swing" and remains within rail-to-rail definition per the datasheet's functional description.
What is the input common-mode voltage range for MAX4195ESA+T?
The input common-mode voltage range for MAX4195ESA+T is VEE − 0.2V to VCC − 1.1V. At VCC = +5V and VEE = 0V, this spans −0.2V to +3.9V - enabling direct interface to grounded thermocouples and bridge sensors without level-shifting. This range is validated across −40°C to +85°C and is explicitly stated in both the General Description and Electrical Characteristics sections.
MAX4195ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 4.5 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
MAX4195ESA+T FAQ
1.How can I place an order for MAX4195ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4195ESA+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 MAX4195ESA+T reliable?
The price and inventory of MAX4195ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4195ESA+T is usually 5 days.
3.What payment methods are accepted for MAX4195ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4195ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4195ESA+T?
MAX4195ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4195ESA+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 MAX4195ESA+T?
For technical support, including MAX4195ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4195ESA+T requirements.
6.How does Aetrix verify that MAX4195ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4195ESA+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 MAX4195ESA+T meets industry standards.
7.What is the process for return or replacement of MAX4195ESA+T?
All MAX4195ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4195ESA+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 MAX4195ESA+T part is unused and in its original packaging.
Return procedure for MAX4195ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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