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Analog Devices Inc./Maxim Integrated MAX6133BASA41+
- Part No.:
- MAX6133BASA41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6133BASA41+.pdf
- Description:
- IC VREF SERIES 0.08% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
MAX6133BASA41+ from Maxim Integrated is a precision series voltage reference delivering 4.096V output with ±0.08% initial accuracy, 5ppm/°C max temperature coefficient (−40°C to +125°C), and 200mV max dropout voltage. It operates from 4.2V to 12.6V input, draws only 45µA typical quiescent current, and supports up to 15mA source current - ideal for high-resolution ADC/DAC biasing in portable instrumentation.
For engineers reviewing the MAX6133BASA41+ datasheet, MAX6133BASA41+ pinout, MAX6133BASA41+ application, or MAX6133BASA41+ equivalent, key selection criteria include guaranteed 4.096V output stability over industrial temperature range, low-noise performance (32µVP-P, 0.1Hz–10Hz), and SO-8 package compatibility with space-constrained PCB layouts requiring minimal external components.
Technical Context
The MAX6133BASA41+ is a bandgap-based series-mode voltage reference using laser-trimmed thin-film resistors and post-package trimming to achieve ±0.08% initial accuracy at +25°C and 5ppm/°C max TCVOUT across −40°C to +125°C. Its architecture eliminates reliance on external shunt paths, enabling efficient operation with supply current virtually independent of VIN.
It features built-in stability with 0.1µF minimum output capacitance, delivers 15mA source capability without external buffers, and maintains line regulation ≤40µV/V and load regulation ≤0.08mV/mA - critical for maintaining LSB accuracy in 14-bit+ data converters under varying load and supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.08% at +25°C - enables direct interface with 12-bit ADCs using 4096-step full-scale encoding. |
| Initial Accuracy | ±0.08% max - eliminates need for system-level calibration in factory-set portable test equipment. |
| Tempco | 5ppm/°C max (−40°C to +125°C) - ensures ≤0.5 LSB drift over full industrial range for 14-bit systems. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 4.2V supply while maintaining regulation for battery-powered designs. |
| Quiescent Current | 45µA typical - extends runtime in coin-cell–powered handheld meters and sensor nodes. |
| Output Noise | 32µVP-P (0.1Hz–10Hz) - preserves SNR in precision signal chains where reference noise dominates total error budget. |
| Line Regulation | ≤40µV/V - limits output shift to <160µV over 4.2V–12.6V input range, supporting unregulated DC-DC outputs. |
| Load Regulation | ≤0.08mV/mA - holds output within ±120µV across full 15mA load swing, suitable for driving multiple op-amp references. |
Pinout & Package
MAX6133BASA41+ is housed in an 8-pin SO (SOIC-N) package measuring 4.90mm × 3.90mm × 1.75mm (max height), compliant with JEDEC MS-012 standard and RoHS-6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7 | No Connection (N.C.) | Internally unconnected; must remain floating or tied to GND per layout best practice - no routing required. |
| 2 | IN | Positive supply input; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for optimal transient rejection. |
| 4 | GND | Analog ground reference; must connect to low-impedance system ground plane to minimize noise coupling into reference path. |
| 5, 8 | I.C. | Internally connected; externally inaccessible - do not route or terminate. |
| 6 | OUT | Stable 4.096V reference output; requires ≥0.1µF ceramic capacitor to GND for stability and low-noise operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Tempco SO Package | 5ppm/°C max over −40°C to +125°C - meets tight drift requirements for field-deployed process transmitters. |
| Ultra-Low Quiescent Current | 45µA typical - enables >10-year battery life in always-on environmental monitoring nodes. |
| High Output Drive | 15mA source capability - directly powers multiple op-amps or ADC reference inputs without external buffers. |
| Wide Input Range | 4.2V to 12.6V - accommodates buck converter outputs and legacy 5V/12V rails without LDO pre-regulation. |
| Low 1/f Noise | 32µVP-P (0.1Hz–10Hz) - minimizes quantization uncertainty in slow-sampling high-precision data loggers. |
| Post-Package Trim | Laser-trimmed thin-film resistors + final trim - guarantees ±0.08% accuracy without user calibration. |
Applications
| Portable Digital Multimeters | Industrial PLC Analog Input Modules |
|---|---|
|
Use Scenario: Handheld DMMs requiring stable 4.096V reference for 12-bit ADC digitization of AC/DC voltage and current measurements. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC front-end, providing full-scale reference for ratiometric measurement against internal gain stages. Use Value: ±0.08% initial accuracy and 5ppm/°C tempco ensure calibrated accuracy remains within Class II specification (±0.1%) across operating temperature without recalibration. |
Use Scenario: Modular I/O cards in programmable logic controllers measuring 4–20mA loop signals with 14-bit resolution and cold-junction compensation. IC Role / Device Role / Timing Role: Precision reference for dual-slope or sigma-delta ADCs converting analog sensor inputs to digital control values. Use Value: 15mA output drive supports simultaneous biasing of multiple instrumentation amplifiers and ADC references on single module, reducing component count. |
| Medical Patient Monitoring Sensors | Automotive Battery Management Systems |
|
Use Scenario: Wearable ECG/SpO₂ sensors using low-power microcontrollers and integrated ADCs to digitize biopotential signals. IC Role / Device Role / Timing Role: Low-noise reference for 14-bit ADC sampling physiological waveforms at 1kHz with <60dB SNR requirement. Use Value: 32µVP-P (0.1Hz–10Hz) noise floor prevents reference-induced baseline wander in sub-Hz bio-signals. |
Use Scenario: Cell voltage monitoring ICs in EV battery packs requiring accurate 4.096V reference for 16-channel ADCs measuring 2.5–4.3V Li-ion cells. IC Role / Device Role / Timing Role: Stable reference for isolated delta-sigma modulators reporting cell voltages to central BMS controller via SPI. Use Value: −40°C to +125°C operation and 120ppm thermal hysteresis ensure long-term repeatability during repeated thermal cycling in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040AIDR | 4.096V, ±0.05% initial accuracy, 3ppm/°C tempco, SO-8, 950µA quiescent current | Higher power consumption; better accuracy/tempco but unsuitable for battery-powered devices | Select REF5040AIDR when absolute long-term stability and ultra-low tempco outweigh battery life constraints. |
| ADR444BRZ | 4.096V, ±0.12% initial accuracy, 3ppm/°C tempco, SO-8, 750µA quiescent current | Worse initial accuracy; higher supply current; superior PSRR (>110dB @ 10Hz) | Choose ADR444BRZ when rejecting noisy switching supplies is prioritized over quiescent current or initial tolerance. |
Compared with REF5040AIDR and ADR444BRZ, MAX6133BASA41+ uniquely balances ultra-low 45µA quiescent current, SO-8 footprint, and industrial-grade tempco - making it optimal for space- and energy-constrained applications where moderate initial accuracy is acceptable.
Availability
MAX6133BASA41+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC analog input modules, and medical sensor electronics requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6133BASA41+ 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 - emphasizing reliability, integration, and application-specific optimization.
The MAX6133BASA41+ belongs to Maxim's precision voltage reference product line, engineered specifically for portable, industrial, and medical systems demanding low power, high accuracy, and robust thermal performance in compact SO-8 packages.
FAQ
What is the guaranteed initial accuracy of MAX6133BASA41+ at +25°C?
The MAX6133BASA41+ guarantees ±0.08% initial output voltage accuracy at +25°C, as specified in the B-grade SO ordering option. This value is laser-trimmed and verified during production test, ensuring compliance without user calibration. The 4.096V nominal output falls within 4.0927V to 4.0993V at room temperature per datasheet limits.
Does MAX6133BASA41+ require an input bypass capacitor?
Yes, the MAX6133BASA41+ requires a 0.1µF ceramic capacitor between IN and GND for optimal line-transient performance. The datasheet specifies placement "as close to IN as possible" to suppress high-frequency supply noise. While operation is possible without it, omitting this capacitor degrades PSRR and increases susceptibility to ripple-induced output variation.
Can MAX6133BASA41+ drive a 10µF output capacitor?
Yes, MAX6133BASA41+ is stable with output capacitive loads up to 100µF, including the recommended 0.1µF minimum. A 10µF capacitor improves transient response during step-load changes and reduces overshoot in DAC reference applications - confirmed by load transient plots in the datasheet showing stable settling with COUT = 10µF.
What is the maximum load current supported by MAX6133BASA41+?
The MAX6133BASA41+ supports up to 15mA of continuous output source current, as guaranteed in the electrical characteristics table. Load regulation is specified for −100µA to +15mA, and dropout voltage remains ≤400mV even at 10mA load - enabling direct drive of multiple op-amps or ADC reference inputs without external buffers.
Is MAX6133BASA41+ compatible with lead-free reflow soldering profiles?
Yes, MAX6133BASA41+ is rated for lead-free reflow processing per JEDEC J-STD-020 Rev E. Its SO-8 package supports peak reflow temperatures up to +260°C for 30 seconds, with MSL level 1 rating - meaning unlimited floor life at ≤30°C/85% RH and no bake requirement prior to assembly.
MAX6133BASA41+ 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 32µVp-p
- Noise - 10Hz to 10kHz:
- 22µVrms
- Voltage - Input:
- 4.2V ~ 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
MAX6133BASA41+ FAQ
1.How can I place an order for MAX6133BASA41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6133BASA41+ 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 MAX6133BASA41+ reliable?
The price and inventory of MAX6133BASA41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6133BASA41+ is usually 5 days.
3.What payment methods are accepted for MAX6133BASA41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6133BASA41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6133BASA41+?
MAX6133BASA41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6133BASA41+ 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 MAX6133BASA41+?
For technical support, including MAX6133BASA41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6133BASA41+ requirements.
6.How does Aetrix verify that MAX6133BASA41+ is sourced from the original manufacturer or authorized distributors?
All MAX6133BASA41+ 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 MAX6133BASA41+ meets industry standards.
7.What is the process for return or replacement of MAX6133BASA41+?
All MAX6133BASA41+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6133BASA41+, 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 MAX6133BASA41+ part is unused and in its original packaging.
Return procedure for MAX6133BASA41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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