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Analog Devices Inc./Maxim Integrated MAX4123ESA+T
- Part No.:
- MAX4123ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4123ESA+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,774
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Product details
Overview
MAX4123ESA+T from Maxim Integrated is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage, low-power precision signal conditioning. It features 5MHz gain-bandwidth product, 650µA quiescent current per amplifier, ±200µV input offset voltage (max), and operates from +2.7V to +6.5V single supply - ideal for battery-powered data-acquisition systems and portable instrumentation.
For engineers reviewing the MAX4123ESA+T datasheet, MAX4123ESA+T pinout, MAX4123ESA+T application, or MAX4123ESA+T equivalent, key selection criteria include shutdown functionality (25µA standby), rail-to-rail I/O swing at 2.7V, stability with 500pF capacitive loads, and SO-8 package compatibility in industrial temperature range (–40°C to +85°C).
Technical Context
The MAX4123ESA+T uses a dual-input-stage architecture (NPN/PNP) enabling rail-to-rail common-mode input range extending 250mV beyond VEE and VCC. Its unity-gain stable design supports high-precision noninverting and inverting configurations without external compensation.
It integrates a dedicated SHDN pin that places the output in high-impedance state and reduces supply current to ≤25µA per amplifier when pulled low - critical for power-gated sensor front-ends and intermittent-sampling systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - enables stable closed-loop operation up to ~100kHz with gain ≥10, suitable for anti-aliasing and sensor amplification stages. |
| Supply Current per Amplifier | 650µA (typ) - allows continuous operation in sub-1mA system power budgets, e.g., coin-cell-powered IoT nodes. |
| Input Offset Voltage | ±200µV (max) - ensures <0.5mV error in 2.5V full-scale 12-bit ADC interfaces without trimming. |
| Rail-to-Rail Output Swing | Within 25mV of rails (RL = 250Ω, VCC = 5V) - maximizes dynamic range in single-supply 3.3V/5V systems. |
| Capacitive Load Stability | Stable with up to 500pF - eliminates need for isolation resistors when driving ADC input filters or long PCB traces. |
| Shutdown Current | 25µA (max) - enables >25× reduction in active current, supporting microamp-level sleep modes. |
| Common-Mode Input Range | VEE – 0.25V to VCC + 0.25V - accepts inputs below ground or above supply, simplifying level-shifting in mixed-voltage systems. |
Pinout & Package
MAX4123ESA+T is housed in an 8-pin SO (Small Outline) package, 150mil width, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - drives 250Ω loads directly; high-impedance during shutdown. |
| 2 | IN− | Inverting input - differential pair node; bias current polarity switches near VCC/2. |
| 3 | IN+ | Noninverting input - matched to IN− for minimal offset; protected by 1kΩ series resistors. |
| 4 | VEE | Negative supply / ground reference - tied to GND in single-supply operation. |
| 5 | VCC | Positive supply - accepts 2.7V–6.5V; requires 0.1µF ceramic + 1µF bulk bypass. |
| 6 | SHDN | Active-low shutdown control - <0.8V disables amplifier; ≥2V or open enables operation. |
| 7 | N.C. | No connect - internally unconnected; must be left floating or grounded per layout best practice. |
| 8 | N.C. | No connect - same as Pin 7; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail I/O | Enables full utilization of 2.7V–6.5V supply range - preserves SNR in low-voltage data converters. |
| Shutdown Mode | Reduces supply current to ≤25µA and isolates output - essential for duty-cycled sensor signal chains. |
| 500pF Capacitive Load Stability | Eliminates external compensation components when interfacing with ADCs or cables - reduces BOM count and layout area. |
| No Phase Reversal on Overdrive | Prevents latch-up or erroneous output transitions during input overload - improves robustness in field-deployed equipment. |
| Low Input Bias Current Mismatch | ±1nA max input offset current - minimizes voltage error across high-impedance sensor bridges or photodiode transimpedance networks. |
Applications
| Battery-Powered Instruments | Portable Medical Devices |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying µV–mV thermocouple or RTD signals under 3.3V battery supply. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input enabling zero-V input detection and full-scale output swing. Use Value: ±200µV offset ensures <0.1% reading error at 200mV range; 650µA current extends AA battery life to >12 months in continuous use. | Use Scenario: ECG electrode amplifier in wearable patch monitoring heart signals with motion artifact rejection. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with shutdown during sleep intervals to conserve energy. Use Value: 25µA shutdown current enables multi-week operation on 100mAh Li-ion cell; rail-to-rail output drives SAR ADC input without level-shifting. |
| Data-Acquisition Systems | Low-Power Industrial Sensors |
Use Scenario: 16-bit ADC front-end in PLC analog input module measuring 4–20mA loop signals. IC Role / Device Role / Timing Role: Buffered voltage translator converting current-loop voltage drop to full-scale ADC input with gain calibration. Use Value: 5MHz GBW supports >100ksps sampling with <0.01% settling; 500pF stability avoids RC filter interaction errors. | Use Scenario: Signal conditioning for MEMS pressure sensor in smart building HVAC node operating on energy-harvested power. IC Role / Device Role / Timing Role: Low-noise, low-quiescent amplifier enabling wake-on-event sensing with microsecond turn-on time. Use Value: 1µs power-up settling time allows immediate measurement after wake; 2.7V minimum operation matches supercapacitor discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462CDR | 2.3MHz GBW, 550µA IQ, no shutdown, SO-8 package | Lacks shutdown mode; lower bandwidth limits high-speed multiplexed DAQ use | Preferred where ultra-low noise (19nV/√Hz) outweighs shutdown need and bandwidth suffices |
| AD8605ARZ | 10MHz GBW, 1mA IQ, no shutdown, SO-8 package | Higher supply current and no shutdown limit battery life in always-on portable devices | Chosen when higher speed and CMRR (>100dB) justify 1.5× current penalty in mains-powered test gear |
Compared with TLV2462CDR and AD8605ARZ, the MAX4123ESA+T uniquely balances 5MHz bandwidth, 25µA shutdown, and rail-to-rail I/O in a single SO-8 package - making it optimal for space-constrained, battery-sensitive precision analog front-ends where power gating and wide supply range are mandatory.
Availability
MAX4123ESA+T is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical devices, and data-acquisition systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX4123ESA+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 demanding industrial, medical, and communications applications.
The MAX4122–MAX4129 family was engineered specifically for low-voltage, low-power signal conditioning in portable and battery-operated systems - emphasizing rail-to-rail performance, micropower shutdown, and robust capacitive-load drive capability.
FAQ
What is the operating temperature range for the MAX4123ESA+T?
The MAX4123ESA+T is rated for operation from –40°C to +85°C, matching industrial-grade requirements. This range is confirmed in the Ordering Information table and DC Electrical Characteristics sections of the official datasheet, where all parameters (including offset voltage, supply current, and output swing) are specified across this full temperature span.
Does the MAX4123ESA+T support true rail-to-rail input and output operation?
Yes, the MAX4123ESA+T provides rail-to-rail input common-mode voltage range (VEE – 0.25V to VCC + 0.25V) and rail-to-rail output voltage swing (within 25mV of rails at RL = 250Ω). These capabilities are explicitly verified in the Absolute Maximum Ratings and DC Electrical Characteristics tables, enabling full dynamic range utilization in 2.7V–6.5V single-supply systems.
How does the shutdown feature of the MAX4123ESA+T behave electrically?
When the SHDN pin is pulled below 0.8V, the MAX4123ESA+T disables its amplifier core, reducing supply current to ≤25µA per amplifier and placing the OUT pin in a high-impedance state. This behavior is characterized in the DC Electrical Characteristics table and validated in Figures 13–14 of the datasheet, confirming fast enable/disable timing (~0.2µs SHDN delay) and leakage-limited output isolation.
Can the MAX4123ESA+T drive a 500pF capacitive load without oscillation?
Yes, the MAX4123ESA+T is explicitly specified as stable with capacitive loads up to 500pF, as stated in the AC Electrical Characteristics table and demonstrated in Figure 4 (Capacitive-Load Stability) and Figures 5–7 (transient response). This eliminates the need for external isolation resistors in typical ADC interface or filtering applications.
What is the maximum supply voltage the MAX4123ESA+T can tolerate?
The MAX4123ESA+T has an absolute maximum supply voltage (VCC – VEE) rating of 7.5V. Operation beyond this voltage risks permanent damage. The recommended operating range is +2.7V to +6.5V for single-supply use, as defined in the DC Electrical Characteristics table and General Description section - ensuring reliable parametric performance across temperature.
MAX4123ESA+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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 725µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4123ESA+T FAQ
1.How can I place an order for MAX4123ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4123ESA+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 MAX4123ESA+T reliable?
The price and inventory of MAX4123ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4123ESA+T is usually 5 days.
3.What payment methods are accepted for MAX4123ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4123ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4123ESA+T?
MAX4123ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4123ESA+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 MAX4123ESA+T?
For technical support, including MAX4123ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4123ESA+T requirements.
6.How does Aetrix verify that MAX4123ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4123ESA+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 MAX4123ESA+T meets industry standards.
7.What is the process for return or replacement of MAX4123ESA+T?
All MAX4123ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4123ESA+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 MAX4123ESA+T part is unused and in its original packaging.
Return procedure for MAX4123ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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