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Analog Devices Inc./Maxim Integrated MAX6133BASA25+T
- Part No.:
- MAX6133BASA25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6133BASA25+T.pdf
- Description:
- IC VREF SERIES 0.08% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,760
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Product details
Overview
MAX6133BASA25+T from Maxim Integrated is a precision series voltage reference delivering 2.500V output with ±0.08% initial accuracy (max), 5ppm/°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 MAX6133BASA25+T datasheet, MAX6133BASA25+T pinout, MAX6133BASA25+T application, or MAX6133BASA25+T equivalent, this page delivers verified specifications, SO-8 package layout, real-world load/line regulation behavior (0.05mV/mA, 30µV/V), noise performance (16µVP-P, 0.1Hz–10Hz), and validated alternatives for precision analog signal chains.
Technical Context
The MAX6133BASA25+T is a bandgap-based series-mode voltage reference using laser-trimmed thin-film resistors and post-package trimming to achieve 0.08% initial accuracy and low thermal hysteresis (120ppm). Its architecture eliminates external pass transistors, enabling minimal external components and direct integration into low-power systems.
It features guaranteed load regulation (0.05mV/mA max) across –100µA to +15mA, line regulation of 30µV/V over 2.7V–12.6V input, and stable operation with 0.1µF to 100µF output capacitance - supporting both fast transient response and long-term stability (40ppm SO package drift over 1000 hours).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.08% at +25°C - enables 14-bit DAC full-scale accuracy without calibration. |
| Tempco | 5ppm/°C max (–40°C to +125°C) - ensures ≤0.5 LSB error over industrial temperature range in 16-bit systems. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 2.7V supply while maintaining 2.5V output. |
| Quiescent Current | 40µA typical - supports >10-year battery life in always-on sensor nodes. |
| Noise (0.1–10Hz) | 16µVP-P - minimizes quantization uncertainty in precision 24-bit delta-sigma ADCs. |
| Load Regulation | 0.05mV/mA max - holds output within 75µV across full 15mA load swing. |
| Line Regulation | 30µV/V max - rejects supply ripple better than 50dB across 2.7–12.6V input range. |
Pinout & Package
MAX6133BASA25+T is housed in an 8-pin SO (SOIC-N) package per JEDEC MS-012, with 150-mil body width, 1.27mm pitch, and gull-wing leads. Pin 1 is marked by notch or dot; 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 (N.C.) | Not bonded internally - leave floating or tie to GND for mechanical stability; no electrical function. |
| 2 | IN | Positive supply input - accepts 2.7V–12.6V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 4 | GND | Analog ground reference - connect directly to low-impedance system ground plane under device. |
| 5, 8 | I.C. (Internally Connected) | Bond-wire internal connection - must not be externally wired; floating or grounded causes undefined behavior. |
| 6 | OUT | 2.500V precision reference output - requires ≥0.1µF ceramic capacitor to GND; stable up to 100µF. |
Key Features
| Feature | Design Value |
|---|---|
| Low-tempco grade | 5ppm/°C max over –40°C to +125°C - meets AEC-Q200 Grade 1 requirements for automotive sensors. |
| Ultra-low quiescent current | 40µA typical - reduces self-heating to <10µW, minimizing thermal drift contribution. |
| High source capability | 15mA output current - drives multiple SAR ADC references or op-amp buffers without external gain stage. |
| Wide supply range | 2.7V to 12.6V - compatible with single Li-ion, dual AA, or 5V/12V industrial rails without LDO pre-regulation. |
| Low-noise architecture | 16µVP-P (0.1–10Hz) - avoids adding noise floor in high-gain instrumentation amplifier front-ends. |
Applications
| Portable Precision Data Loggers | Industrial 4–20mA Transmitters |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node sampling temperature/humidity at 100SPS with 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADC and excitation current source, rejecting supply sag during RF transmission bursts. Use Value: Enables ±0.1°C measurement accuracy over –25°C to +70°C ambient with no recalibration, extending field deployment intervals. |
Use Scenario: Loop-powered transmitter converting RTD resistance to 4–20mA output in hazardous-area process control cabinets. IC Role / Device Role / Timing Role: Supplies precision reference for ratiometric RTD measurement and DAC-based current loop modulation. Use Value: Maintains 0.05% full-scale accuracy across –40°C to +85°C cabinet temperatures, eliminating field zero/span adjustments. |
| Handheld Multimeters | Medical ECG Signal Conditioning |
|
Use Scenario: 4½-digit handheld DMM performing auto-ranging DCV measurements with 100µV resolution. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope integrator and auxiliary reference for autoranging attenuators. Use Value: Delivers 0.01% reading accuracy over 8-hour work shift without warm-up drift, meeting IEC 61010-1 CAT III safety compliance. |
Use Scenario: Low-power wearable ECG monitor digitizing 0.5–100Hz biopotentials with 24-bit resolution. IC Role / Device Role / Timing Role: References programmable-gain instrumentation amplifier and anti-alias filter cutoff calibration. Use Value: Limits baseline wander to <1µV RMS over 24-hour monitoring, preserving ST-segment diagnostic fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | 2.5V, 3ppm/°C max, 95µA IQ, SO-8 - higher accuracy but 2.4× higher supply current. | Preferred where ultra-low tempco dominates over battery life; unsuitable for sub-100µA systems. | Select REF5025IDR when 3ppm/°C is mandatory and power budget allows >90µA continuous draw. |
| ADR3425ARJZ-R7 | 2.5V, 10ppm/°C max, 35µA IQ, SOT-23-5 - smaller footprint but looser tempco and lower output drive (10mA). | Better for space-constrained PCBs with relaxed accuracy; limited to single ADC or low-current buffers. | Choose ADR3425ARJZ-R7 for wearables or IoT nodes where board area is critical and 10ppm/°C suffices. |
Compared with REF5025IDR, MAX6133BASA25+T trades 2ppm/°C higher tempco for 55µA lower quiescent current - critical for 10-year coin-cell operation. Against ADR3425ARJZ-R7, it delivers 5ppm/°C tighter drift and 50% higher output current at the cost of SO-8 footprint.
Availability
MAX6133BASA25+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial 4–20mA transmitters, handheld test equipment, and medical biosignal acquisition requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6133BASA25+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications - with emphasis on reliability, low power, and ruggedized operation.
The MAX6133 series was engineered specifically for high-accuracy, low-power voltage referencing in battery-operated and thermally demanding environments - targeting data converters, sensor signal chains, and industrial control systems.
FAQ
What is the maximum load current supported by the MAX6133BASA25+T?
The MAX6133BASA25+T guarantees stable 2.500V output with ≤0.05mV/mA load regulation across –100µA to +15mA source current. At 15mA, dropout remains ≤400mV, and output accuracy stays within ±0.08% initial tolerance plus tempco-induced drift. Exceeding 15mA risks output collapse or increased noise.
Can the MAX6133BASA25+T operate from a 3.3V supply?
Yes - the MAX6133BASA25+T functions reliably from 2.7V to 12.6V input. At 3.3V, dropout margin is 800mV (3.3V – 2.5V), well above the 200mV max spec, ensuring full accuracy and noise performance. Input capacitor (0.1µF ceramic) must be placed adjacent to the IN pin per layout guidelines.
What is the output voltage noise specification for the MAX6133BASA25+T?
The MAX6133BASA25+T delivers 16µVP-P (0.1Hz to 10Hz) and 12µVRMS (10Hz to 1kHz) output voltage noise. This low noise floor prevents degradation of effective resolution in high-bit-depth ADCs - e.g., contributes <0.25 LSB error in a 2.5V-referenced 16-bit converter.
How does the MAX6133BASA25+T handle thermal hysteresis?
The MAX6133BASA25+T exhibits 120ppm typical thermal hysteresis - defined as output voltage shift at +25°C before/after cycling from –40°C to +125°C. This is consistent across SO and µMAX packages and is factored into total error budgets for metrology-grade instruments requiring repeatable calibration.
Is the MAX6133BASA25+T pin-compatible with other MAX6133 variants?
Yes - all MAX6133 variants (including MAX6133AASA25+, MAX6133BASA30+, etc.) share identical 8-pin SO package and pinout. Only output voltage (2.5V/3.0V/4.096V/5.0V) and grade (A/B) differ. System-level replacement requires verifying supply headroom and load current compatibility for the new voltage option.
MAX6133BASA25+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:
- ±0.08%
- Temperature Coefficient:
- 10ppm/°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
MAX6133BASA25+T FAQ
1.How can I place an order for MAX6133BASA25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6133BASA25+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 MAX6133BASA25+T reliable?
The price and inventory of MAX6133BASA25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6133BASA25+T is usually 5 days.
3.What payment methods are accepted for MAX6133BASA25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6133BASA25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6133BASA25+T?
MAX6133BASA25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6133BASA25+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 MAX6133BASA25+T?
For technical support, including MAX6133BASA25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6133BASA25+T requirements.
6.How does Aetrix verify that MAX6133BASA25+T is sourced from the original manufacturer or authorized distributors?
All MAX6133BASA25+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 MAX6133BASA25+T meets industry standards.
7.What is the process for return or replacement of MAX6133BASA25+T?
All MAX6133BASA25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6133BASA25+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 MAX6133BASA25+T part is unused and in its original packaging.
Return procedure for MAX6133BASA25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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