My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6125ESA+T
- Part No.:
- MAX6125ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6125ESA+T.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6125ESA+T from Maxim Integrated is a precision 2.5V low-dropout, micropower, three-terminal voltage reference in an 8-pin SO package, featuring ±1% initial accuracy, 15ppm/°C typical temperature coefficient, and 200mV dropout voltage-ideal for high-accuracy analog sensing and data-acquisition circuits in 3V systems.
For engineers reviewing the MAX6125ESA+T datasheet, MAX6125ESA+T pinout, MAX125ESA+T application, or MAX6125ESA+T equivalent, this device delivers stable 2.5V output with 75µA supply current independent of input voltage, low 15µVP-P (0.1–10Hz) noise, and guaranteed stability with up to 10nF capacitive loads-key selection criteria for battery-powered instrumentation and precision ADC biasing.
Technical Context
The MAX6125ESA+T employs a bandgap-based reference core with internal trimming for ±1% initial output tolerance at +25°C and operates across –40°C to +85°C. Its 200mV dropout enables regulation from as low as 2.7V input while maintaining 2.5V output, supporting direct integration into 3V microcontroller power domains.
Supply current remains tightly regulated at 75µA (typ) over VIN = 2.7V–12.6V and temperature, eliminating input-voltage-dependent battery drain. Load regulation is specified at 0.4–1.0 mV/mA sourcing and 1.15–10 mV/mA sinking, ensuring minimal output shift under dynamic load conditions typical in DAC reference or sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±1% at +25°C; 2.450–2.550 V over full temperature range-enables direct use with 12-bit ADCs requiring ≤1 LSB error at 2.5V full-scale. |
| Tempco | 15 ppm/°C typical, ≤50 ppm/°C max-limits drift to <±1.25 mV over –40°C to +85°C, critical for uncalibrated industrial sensors. |
| Dropout Voltage | 200 mV at 1mA load-allows operation from 2.7V supply, compatible with single-cell Li-ion or 3V coin-cell systems. |
| Supply Current | 75 µA typ, ≤130 µA over temp-ensures >10-year battery life in 10µA-average-power IoT nodes. |
| Noise (0.1–10Hz) | 15 µVP-P-low enough to avoid degrading ENOB of 16-bit SAR ADCs referenced to this output. |
| Load Regulation | 0.4 mV/mA (source), 1.15 mV/mA (sink)-supports stable biasing of op-amp inputs or transducer bridges drawing up to 1mA. |
| Capacitive Load Stability | Stable with 0–10 nF-permits direct connection to ADC reference inputs without external compensation. |
Pinout & Package
MAX6125ESA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot; thermal pad is not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Input voltage terminal; accepts 2.7V to 12.6V; requires local 0.1µF ceramic bypass for optimal line-transient rejection. |
| 2 | N.C. | No internal connection; must be left floating or tied to GND per layout best practice-no functional impact. |
| 3 | N.C. | No internal connection; electrically isolated-no routing or soldering required. |
| 4 | N.C. (ADJ) | No connection on MAX6125; ADJ function only present on MAX6160-pin 4 is unused and unconnected internally. |
| 5 | OUT | Precision 2.5V reference output; capable of sourcing/sinking ±1mA; low-noise node requiring clean PCB routing. |
| 6 | N.C. | No internal connection; no electrical function-leave unconnected. |
| 7 | N.C. | No internal connection; no electrical function-leave unconnected. |
| 8 | GND | Analog ground reference; must be connected to low-impedance system ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low 200mV dropout | Enables reliable 2.5V regulation from 2.7V supplies-critical for energy-constrained 3V systems where every millivolt of headroom matters. |
| 75µA supply current, VIN-independent | Eliminates battery current variation with supply aging or temperature-extends runtime predictability in portable medical devices. |
| 15ppm/°C typical tempco | Reduces calibration frequency in field-deployed test equipment; supports ±0.01% output stability over industrial temperature range. |
| Stable with 0–10nF capacitive loads | Removes need for external isolation resistors or damping networks-simplifies layout and reduces BOM count in compact sensor modules. |
| ±1% initial accuracy | Meets uncalibrated accuracy requirements for Class I industrial transmitters and portable multimeters without factory trim. |
Applications
| High-Accuracy Data Acquisition | Battery-Powered Instrumentation |
|---|---|
Use Scenario: 16-bit SAR ADC in handheld power quality analyzer sampling AC voltage/current with ±0.1% total measurement uncertainty. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, providing stable 2.5V full-scale reference with sub-LSB drift. Use Value: 15µVP-P (0.1–10Hz) noise and 50ppm/°C max tempco ensure <0.005% gain error contribution over operating temperature. | Use Scenario: Portable gas detector using electrochemical sensor with ratiometric readout and Bluetooth LE transmission. IC Role / Device Role / Timing Role: Precision bias source for sensor amplifier and ADC reference, powered directly from 3.0V Li-SOCl₂ primary cell. Use Value: 75µA quiescent current and 200mV dropout extend usable battery life beyond 5 years at 10-second wake-up intervals. |
| Industrial Process Control Transmitters | Medical Sensor Signal Conditioning |
Use Scenario: 4–20mA loop-powered temperature transmitter with HART digital overlay, mounted in HVAC ducts. IC Role / Device Role / Timing Role: Stable 2.5V reference for RTD bridge excitation and ADC conversion in 3.3V auxiliary rail derived from loop power. Use Value: ±1% initial accuracy and ≤50ppm/°C tempco meet ISA-S50.1 Class B (±0.25% FS) accuracy requirement without software calibration. | Use Scenario: Disposable ECG patch with ultra-low-power MCU, analog front-end, and 12-bit ADC sampling at 250SPS. IC Role / Device Role / Timing Role: Low-noise reference for instrumentation amplifier gain-setting and ADC reference, operating from 3.0V coin cell. Use Value: 200mV dropout allows operation down to 2.7V battery voltage; 15ppm/°C tempco ensures <±10µV drift over patient body temperature range (35–42°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C max tempco, SOT23-3 package, 50µA IQ | Higher accuracy but lower dropout (180mV) and smaller package-requires redesign for SO-8 footprint and higher precision demand. | Select when ±0.2% initial tolerance is mandatory and board space is constrained; verify layout compatibility with 3-pin SOT23. |
| ADR3425ARJZ-R7 | 2.5V, ±0.1% initial accuracy, 10ppm/°C max tempco, SOT23-5 package, 120µA IQ | Superior accuracy and tempco but higher supply current and different pinout-unsuitable for drop-in replacement in existing SO-8 designs. | Choose for metrology-grade applications where long-term stability outweighs power budget; requires new PCB layout and firmware calibration update. |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the MAX6125ESA+T offers the optimal balance of SO-8 footprint compatibility, 200mV dropout, and 75µA supply current for cost-sensitive industrial and portable designs where ±1% initial accuracy is sufficient.
Availability
MAX6125ESA+T is available at Aetrix Electronics and suitable for high-accuracy data acquisition, battery-powered instrumentation, and industrial process control applications requiring stable component supply and long-lifecycle support.
Supply support for MAX6125ESA+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 and mixed-signal ICs for industrial, medical, and communications applications-with emphasis on low-power, high-reliability performance.
The MAX61xx family was developed specifically for micropower, low-dropout voltage reference needs in battery-operated and space-constrained systems-delivering stable outputs with minimal headroom and supply-current variation.
FAQ
What is the maximum input voltage rating for the MAX6125ESA+T?
The MAX6125ESA+T has an absolute maximum input voltage rating of +13.5V, but its operational supply voltage range is specified from 2.7V to 12.6V across the full temperature range. Operating above 12.6V may cause parametric degradation or reliability risk, even if within absolute maximum limits. Always maintain VIN ≤ 12.6V for guaranteed performance in all conditions.
Does the MAX6125ESA+T require an output capacitor for stability?
No, the MAX6125ESA+T does not require an output capacitor and is explicitly characterized as stable with capacitive loads from 0nF to 10nF. Adding larger capacitance may degrade transient response or cause instability. If a charge reservoir is needed-for example, to buffer a DAC reference input-ensure total output capacitance stays ≤10nF to preserve settling time and noise performance.
Can the MAX6125ESA+T be used in adjustable-output configurations?
No, the MAX6125ESA+T is a fixed 2.5V output device and lacks the ADJ pin required for programmable output. Only the MAX6160 variant includes the ADJ terminal and internal 1.23V feedback threshold. Attempting to configure MAX6125ESA+T as adjustable will result in incorrect or unstable output voltage due to missing internal circuitry and pin functionality.
What is the thermal hysteresis specification for the MAX6125ESA+T?
The MAX6125ESA+T exhibits ≤80ppm thermal hysteresis, measured as output voltage deviation after cycling between –40°C and +85°C multiple times. This parameter reflects mechanical stress memory in the silicon and package; it is distinct from tempco and contributes to non-repeatable error in systems undergoing frequent thermal cycling-such as outdoor environmental monitors or automotive cabin sensors.
How does supply current variation affect battery life in a 3V coin-cell application using MAX6125ESA+T?
In a typical CR2032-powered design drawing 75µA average from MAX6125ESA+T, the device contributes ~0.0006% of total capacity loss per hour-enabling >10-year operation at 1-second wake-up intervals. Because supply current is virtually independent of input voltage (ΔIQ/ΔVIN ≤ 6µA/V), battery aging-induced voltage sag from 3.0V to 2.7V causes negligible current increase, preserving predictable end-of-life behavior without runtime recalibration.
MAX6125ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX6125ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6125ESA+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 MAX6125ESA+T reliable?
The price and inventory of MAX6125ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6125ESA+T is usually 5 days.
3.What payment methods are accepted for MAX6125ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6125ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6125ESA+T?
MAX6125ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6125ESA+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 MAX6125ESA+T?
For technical support, including MAX6125ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6125ESA+T requirements.
6.How does Aetrix verify that MAX6125ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6125ESA+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 MAX6125ESA+T meets industry standards.
7.What is the process for return or replacement of MAX6125ESA+T?
All MAX6125ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6125ESA+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 MAX6125ESA+T part is unused and in its original packaging.
Return procedure for MAX6125ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6125ESA+T Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
