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Analog Devices Inc./Maxim Integrated MAX6133AASA25+T
- Part No.:
- MAX6133AASA25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6133AASA25+T.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:907
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Product details
Overview
MAX6133AASA25+T from Maxim Integrated is a precision series voltage reference delivering 2.500V output with ±0.04% (max) initial accuracy, 3ppm/°C (max) temperature coefficient over –40°C to +125°C, and 200mV (max) dropout voltage. It operates from 2.7V to 12.6V supply, draws only 40µA quiescent current, and supports up to 15mA source current - ideal for high-resolution ADC/DAC biasing in portable instrumentation.
For engineers reviewing the MAX6133AASA25+T datasheet, MAX6133AASA25+T pinout, MAX6133AASA25+T application, or MAX6133AASA25+T equivalent, key selection criteria include guaranteed initial accuracy at extended temperature range, low-noise performance (16µVP-P, 0.1Hz–10Hz), and SO-8 package compatibility with space-constrained industrial sensor nodes and battery-powered data loggers.
Technical Context
This is a bandgap-based series-mode voltage reference using laser-trimmed thin-film resistors and post-package trimming to achieve high stability. Its architecture eliminates external components required by shunt references and enables direct integration into low-power signal chains without additional regulation stages.
The device features internal compensation for stable operation with 0.1µF to 100µF output capacitance, exhibits excellent line regulation (30µV/V max) and load regulation (0.05mV/mA max), and maintains specified performance across its full –40°C to +125°C operating range with thermal hysteresis limited to 120ppm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.010V at +25°C - enables precise scaling of 14-bit DACs and 16-bit SAR ADCs without calibration. |
| Initial Accuracy | ±0.04% max at +25°C - guarantees ≤1 LSB error in 14-bit systems over full temperature range. |
| Tempco | 3ppm/°C max (–40°C to +125°C, SO package) - ensures <±48ppm drift across industrial temperature span. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 2.7V supply while maintaining 2.5V reference under full load. |
| Quiescent Current | 40µA typical, ≤85µA over temperature - extends battery life in handheld meters and wireless sensors. |
| Output Noise | 16µVP-P (0.1Hz–10Hz), 12µVRMS (10Hz–1kHz) - preserves SNR in precision analog front-ends. |
| Load Regulation | 0.05mV/mA max - limits output shift to <0.75mV over 15mA load variation, critical for multi-channel sensor biasing. |
Pinout & Package
MAX6133AASA25+T is housed in an 8-pin SO (SOIC-N) package measuring 4.90mm × 3.90mm × 1.75mm (JEDEC MS-012). Pin 1 is marked with a beveled corner; pins 1, 3, and 7 are No Connect (N.C.), pins 5 and 8 are internally connected (I.C.) and must remain unconnected, pin 2 is IN (supply input), pin 4 is GND, and pin 6 is OUT (2.5V reference output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7 | No Connection | Not bonded; may be left floating or tied to GND for mechanical stability - no electrical function. |
| 2 | Supply Input | Accepts 2.7V–12.6V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for transient immunity. |
| 4 | Ground Reference | Primary return path for reference output and supply current; must connect to low-impedance system ground plane. |
| 5, 8 | Internally Connected | Internal bond wires only; external connection causes malfunction or damage - leave unconnected. |
| 6 | Reference Output | Delivers regulated 2.500V; requires ≥0.1µF ceramic capacitor to GND for stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±0.04% initial accuracy without external calibration - reduces test time and BOM count in production test fixtures. |
| Post-package trimming | Compensates for packaging-induced stress, ensuring 3ppm/°C tempco remains valid after solder reflow and board assembly. |
| Low 40µA quiescent current | Minimizes self-heating and power loss in always-on sensor nodes - supports >10-year battery life in 250µA average-current applications. |
| Stable with 0.1µF–100µF output capacitance | Eliminates need for specialized low-ESR capacitors and simplifies layout in mixed-signal PCBs with shared decoupling networks. |
| 15mA source capability | Drives multiple op-amp inputs or ADC reference pins directly - avoids external buffers in 4–8 channel data acquisition modules. |
Applications
| High-Accuracy Industrial Sensors | Portable Precision Meters |
|---|---|
Use Scenario: 4–20mA loop-powered pressure transmitters with integrated 16-bit ADC and microcontroller. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADC conversion and excitation current generation. Use Value: Enables <±0.1% total measurement error over –40°C to +85°C ambient, meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Handheld multimeter with dual-slope ADC and auto-ranging front-end. IC Role / Device Role / Timing Role: Supplies precision reference for analog-to-digital conversion and LCD bias generation. Use Value: Maintains 4½-digit resolution across battery discharge (2.8V–3.6V), eliminating recalibration during field use. |
| Medical Instrumentation | Communications Baseband Circuits |
Use Scenario: Portable ECG monitor with 24-bit delta-sigma ADC and real-time digital filtering. IC Role / Device Role / Timing Role: Serves as low-noise reference for ADC and programmable gain amplifier (PGA) offset nulling. Use Value: Contributes <0.15µV RMS noise to signal chain, preserving >110dB SNR at 1kHz bandwidth. | Use Scenario: Small-cell LTE baseband unit requiring calibrated DAC outputs for RF front-end control. IC Role / Device Role / Timing Role: Generates stable 2.5V reference for 14-bit DACs controlling PA bias and filter tuning. Use Value: Ensures <±0.5dB gain flatness across 0–6GHz RF spectrum via accurate digital control word mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARJZ-R7 | 2.5V output, ±0.1% initial accuracy, 10ppm/°C tempco, 300mV dropout, 12µA IQ | Lower quiescent current but looser accuracy and higher tempco - suitable for cost-sensitive consumer IoT, not industrial grade | Select when ultra-low power dominates over precision; verify 10ppm/°C meets system LSB budget. |
| REF5025IDR | 2.5V output, ±0.05% initial accuracy, 3ppm/°C tempco, 350mV dropout, 950µA IQ | Same accuracy/tempco spec but higher supply current and larger SO-8 footprint - better for high-speed settling, not portable devices | Choose when faster turn-on (<100µs) and superior PSRR (>110dB) are required despite higher power draw. |
Compared with ADR3425ARJZ-R7, MAX6133AASA25+T delivers tighter initial accuracy and lower tempco at modest IQ increase; versus REF5025IDR, it achieves comparable precision with 24× lower quiescent current and 30% smaller dropout - making it optimal for battery-critical, high-accuracy embedded systems.
Availability
MAX6133AASA25+T is available at Aetrix Electronics and suitable for high-accuracy industrial sensors, portable precision meters, and medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6133AASA25+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 MAX6133 series was developed specifically for high-stability, low-power voltage referencing in portable and harsh-environment systems where accuracy, size, and supply efficiency are jointly constrained.
FAQ
What is the maximum operating temperature range for MAX6133AASA25+T?
The MAX6133AASA25+T is rated for continuous operation from –40°C to +125°C. This extended temperature range is validated across all electrical specifications including initial accuracy, temperature coefficient, and load regulation - enabling deployment in automotive engine compartments and industrial motor drives without derating.
Does MAX6133AASA25+T require an input capacitor?
While not strictly mandatory, a 0.1µF ceramic capacitor placed as close as possible to the IN pin (pin 2) of MAX6133AASA25+T is strongly recommended to suppress supply-line transients and ensure robust line regulation performance. Without it, line rejection degrades above 10kHz, potentially affecting ADC accuracy in noisy environments.
Can MAX6133AASA25+T drive a 10kΩ load directly?
Yes. With a 15mA maximum output source capability and 0.05mV/mA load regulation, MAX6133AASA25+T can drive a 10kΩ load (250µA) while shifting output voltage by less than 0.0125mV - well within its ±0.04% initial accuracy band. No buffer amplifier is needed for typical op-amp or ADC reference inputs.
What is the long-term stability specification for MAX6133AASA25+T?
MAX6133AASA25+T exhibits 40ppm typical long-term stability after 1000 hours of operation at +125°C in the SO package. This value is measured as drift from the initial +25°C output voltage and reflects the combined effect of silicon aging and package stress relaxation - critical for calibration-critical equipment with 5+ year service intervals.
Is MAX6133AASA25+T pin-compatible with other MAX6133 variants?
Yes. All MAX6133 variants - including MAX6133AASA30+T, MAX6133AASA41+T, and MAX6133AASA50+T - share identical SO-8 pinout and package dimensions. Only the output voltage and associated electrical parameters differ; no PCB redesign is required when substituting between 2.5V, 3.0V, 4.096V, or 5.0V versions of the A-grade SO package.
MAX6133AASA25+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:
- 15 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 7ppm/°C
- Noise - 0.1Hz to 10Hz:
- 16µVp-p
- Noise - 10Hz to 10kHz:
- 12µVrms
- Voltage - Input:
- 2.7V ~ 12.6V
- Current - Supply:
- 85µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6133AASA25+T FAQ
1.How can I place an order for MAX6133AASA25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6133AASA25+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 MAX6133AASA25+T reliable?
The price and inventory of MAX6133AASA25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6133AASA25+T is usually 5 days.
3.What payment methods are accepted for MAX6133AASA25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6133AASA25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6133AASA25+T?
MAX6133AASA25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6133AASA25+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 MAX6133AASA25+T?
For technical support, including MAX6133AASA25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6133AASA25+T requirements.
6.How does Aetrix verify that MAX6133AASA25+T is sourced from the original manufacturer or authorized distributors?
All MAX6133AASA25+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 MAX6133AASA25+T meets industry standards.
7.What is the process for return or replacement of MAX6133AASA25+T?
All MAX6133AASA25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6133AASA25+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 MAX6133AASA25+T part is unused and in its original packaging.
Return procedure for MAX6133AASA25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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