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Analog Devices Inc./Maxim Integrated MAX6125ESA+
- Part No.:
- MAX6125ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6125ESA+.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,168
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Product details
Overview
MAX6125ESA+ from Maxim Integrated is a precision 2.5V low-dropout, micropower, three-terminal voltage reference in an 8-pin SO package. It delivers ±1% initial accuracy, 15ppm/°C typical temperature coefficient, and 200mV dropout at 1mA load-optimized for 3V systems in battery-powered instrumentation and data-acquisition circuits.
For engineers reviewing the MAX6125ESA+ datasheet, MAX6125ESA+ pinout, MAX125ESA+ application, or MAX6125ESA+ equivalent, this page provides verified pin configuration, real-world load regulation (0.4–1 mV/mA sourcing), thermal hysteresis (80ppm), noise performance (15µVP-P, 0.1Hz–10Hz), and validated alternatives for 2.5V reference design.
Technical Context
The MAX6125ESA+ uses a bandgap-based reference core with internal trimming for ±1% initial output accuracy at +25°C and guaranteed 2.45V–2.55V over –40°C to +85°C. Its supply current remains stable (75–130µA) across input voltages from 2.7V to 12.6V, eliminating battery-current waste common in two-terminal references.
Designed for capacitive-load stability up to 10nF without external compensation, it supports direct connection to ADCs, DACs, and sensor signal chains. The 8-pin SO package includes four no-connect pins (pins 2, 3, 5, 6), simplifying layout while maintaining thermal performance (471mW max power dissipation at +70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±1% at +25°C; 2.450V–2.550V over full temperature range |
| Tempco | 15ppm/°C typical; ≤50ppm/°C guaranteed-enables <±0.5mV drift over –40°C to +85°C |
| Dropout Voltage | 200mV at 1mA load-supports operation from 2.7V supply in 3V systems |
| Supply Current | 75µA at +25°C; ≤130µA over temperature-minimizes battery drain in portable devices |
| Output Noise | 15µVP-P (0.1Hz–10Hz); 500µVRMS (10Hz–10kHz)-suitable for 16-bit ADC reference |
| Line Regulation | 1–50µV/V-ensures <125µV output shift across 2.7V–12.6V input range |
| Load Regulation | 0.4–1.0mV/mA (sourcing); 1.15–10mV/mA (sinking)-maintains accuracy under dynamic load |
Pinout & Package
MAX6125ESA+ is housed in an 8-pin SO (Small Outline) package with exposed pad option not specified. Pin 1 is IN, pin 4 is GND, pin 8 is OUT; pins 2, 3, 5, and 6 are no-connect (N.C.) and must remain unconnected per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Input voltage terminal; accepts 2.7V–12.6V; requires 0.1µF ceramic bypass if high line-transient immunity needed |
| 4 | GND | Analog ground reference; must be low-impedance connection to system ground plane |
| 8 | OUT | Precision 2.5V reference output; stable with 0–10nF capacitive load; drives ≤1mA source/sink |
| 2, 3, 5, 6 | N.C. | No internal connection; must be left floating-no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout | 200mV at 1mA enables use in 3V systems with minimal headroom loss |
| Micropower operation | 75µA quiescent current extends battery life in always-on portable instruments |
| Capacitive-load stability | Stable with 0–10nF output capacitance-eliminates need for external compensation |
| Thermal hysteresis | 80ppm-limits repeatability error after thermal cycling in industrial environments |
| Supply-voltage independence | ∆IQ/∆VIN ≤6µA/V ensures consistent current draw across wide input range |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitoring node sampling temperature/humidity every 10 seconds. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for 16-bit SAR ADC converting analog sensor outputs. Use Value: 15ppm/°C tempco and 15µVP-P low-frequency noise ensure <±1LSB error over –20°C to +60°C operating range. | Use Scenario: 4–20mA loop-powered pressure transmitter in factory automation. IC Role / Device Role / Timing Role: Supplies precision reference for DAC generating loop current setpoint. Use Value: 200mV dropout allows operation from 3.3V LDO rail; 0.4mV/mA load regulation prevents current-setpoint drift during loop transients. |
| Handheld Multimeters | Medical Patient Monitors |
Use Scenario: Autoranging DMM with dual-slope integrator ADC requiring clean reference. IC Role / Device Role / Timing Role: Low-noise 2.5V reference for integrating capacitor charging reference voltage. Use Value: 500µVRMS (10Hz–10kHz) noise avoids digitization artifacts; 10nF capacitive-load tolerance simplifies front-end filtering. | Use Scenario: Portable ECG module measuring microvolt-level cardiac signals. IC Role / Device Role / Timing Role: Reference for instrumentation amplifier gain-setting and ADC conversion. Use Value: ±1% initial accuracy and 80ppm thermal hysteresis ensure calibration stability across clinical re-use cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.5V precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CSZ-REEL | 2.5V output, ±0.3% initial accuracy, 25ppm/°C max tempco, 8-pin SO, 1.2mA supply current | Higher accuracy but 16× higher quiescent current-unsuitable for battery life-critical designs | Select REF02CSZ-REEL only when tighter initial tolerance outweighs power penalty. |
| ADR3425ARJZ-R7 | 2.5V output, ±0.1% initial accuracy, 10ppm/°C max tempco, SOT23-5, 120µA supply current | Superior accuracy/tempco but 5-pin SOT23 package requires PCB redesign vs. 8-pin SO of MAX6125ESA+ | Choose ADR3425ARJZ-R7 for space-constrained, high-precision applications where layout change is acceptable. |
Compared with REF02CSZ-REEL and ADR3425ARJZ-R7, the MAX6125ESA+ offers optimal balance of micropower operation (75µA), 8-pin SO compatibility, and sufficient accuracy (±1%) for cost-sensitive industrial and portable instrumentation-without demanding PCB rework or sacrificing battery runtime.
Availability
MAX6125ESA+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and handheld test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6125ESA+ 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 MAX61xx family was developed specifically for low-power, high-stability voltage referencing in battery-operated and space-constrained systems-emphasizing dropout minimization, supply-current independence, and capacitive-load robustness.
FAQ
What is the maximum input voltage rating for the MAX6125ESA+?
The MAX6125ESA+ has an absolute maximum input voltage of +13.5V relative to GND. However, its operational supply voltage range is specified from 2.7V to 12.6V across the full temperature range (–40°C to +85°C). Exceeding 12.6V may degrade long-term reliability or cause parametric shift, even if within absolute maximum ratings. Always maintain VIN ≤12.6V in normal operation for guaranteed performance of the MAX6125ESA+.
Does the MAX6125ESA+ require an output capacitor for stability?
No, the MAX6125ESA+ does not require an output capacitor. It is explicitly characterized and guaranteed stable with capacitive loads from 0nF to 10nF. Adding capacitance beyond 10nF may degrade transient response or cause oscillation. If used for charge reservoir purposes (e.g., decoupling from a DAC input), total output capacitance must remain ≤10nF to preserve settling-time performance-confirmed in the MAX6125ESA+ datasheet's Applications Information section.
What is the thermal hysteresis specification for the MAX6125ESA+?
The MAX6125ESA+ has a thermal hysteresis of 80ppm, measured across multiple temperature cycles (–40°C → +85°C → –40°C). This value reflects the maximum reversible output voltage shift due to thermal history and is independent of temperature coefficient. It directly impacts calibration repeatability in field-deployed equipment that undergoes repeated thermal cycling-making it a critical parameter for medical and industrial-grade MAX6125ESA+ implementations.
Can the MAX6125ESA+ drive a 1mA load continuously?
Yes, the MAX6125ESA+ is fully specified to source and sink up to 1mA continuously across its operating temperature range. Load regulation is characterized at 0–1mA sourcing (0.4–1.0mV/mA) and sinking (1.15–10mV/mA). Dropout remains ≤200mV at 1mA, and thermal limits (471mW max in 8-pin SO at +70°C) are not exceeded under typical 2.5V output conditions. This makes the MAX6125ESA+ suitable for driving ADC references, op-amp bias networks, and small DAC loads.
How does supply current vary with input voltage in the MAX6125ESA+?
The MAX6125ESA+ exhibits exceptional supply-current stability: ∆IQ/∆VIN is guaranteed ≤6µA/V across 2.7V–12.6V input range. At +25°C, IQ is typically 75µA and remains nearly flat-unlike two-terminal references whose current scales with input voltage. This behavior directly extends battery life in variable-supply applications and eliminates input-dependent error terms in precision systems using the MAX6125ESA+.
MAX6125ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 15µVp-p
- Noise - 10Hz to 10kHz:
- 500µVp-p
- Voltage - Input:
- 2.7V ~ 12.6V
- Current - Supply:
- 130µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6125ESA+ FAQ
1.How can I place an order for MAX6125ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6125ESA+ 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 MAX6125ESA+ reliable?
The price and inventory of MAX6125ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6125ESA+ is usually 5 days.
3.What payment methods are accepted for MAX6125ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6125ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6125ESA+?
MAX6125ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6125ESA+ 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 MAX6125ESA+?
For technical support, including MAX6125ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6125ESA+ requirements.
6.How does Aetrix verify that MAX6125ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6125ESA+ 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 MAX6125ESA+ meets industry standards.
7.What is the process for return or replacement of MAX6125ESA+?
All MAX6125ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6125ESA+, 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 MAX6125ESA+ part is unused and in its original packaging.
Return procedure for MAX6125ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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