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Analog Devices Inc./Maxim Integrated MAX6133BASA50+
- Part No.:
- MAX6133BASA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6133BASA50+.pdf
- Description:
- IC VREF SERIES 5V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
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Product details
Overview
The MAX6133BASA50+ from Maxim Integrated is a precision series-mode voltage reference delivering 5.000V output with ±0.08% initial accuracy (max), 5ppm/°C max temperature coefficient over –40°C to +125°C, and 200mV max dropout voltage at 10mA load - enabling high-accuracy analog signal conditioning in battery-powered instrumentation and industrial data acquisition systems.
For engineers reviewing the MAX6133BASA50+ datasheet, MAX6133BASA50+ pinout, MAX6133BASA50+ application, or MAX6133BASA50+ equivalent, key selection criteria include guaranteed 15mA source capability, 40µA quiescent current, low 40µVP-P (0.1Hz–10Hz) noise at 5V output, and SO-8 package compatibility with space-constrained PCB layouts requiring stable 5V reference performance across wide temperature ranges.
Technical Context
The MAX6133BASA50+ employs bandgap-based series architecture with laser-trimmed thin-film resistors and post-package trimming to achieve tight initial accuracy and low thermal drift. Its internal circuitry operates as a three-terminal active regulator, sourcing up to 15mA while maintaining regulation down to 5.2V input (for 5V output).
It features built-in stability with ≥0.1µF output capacitance, exhibits 2µV/V line regulation and 0.01–0.10mV/mA load regulation depending on output current, and delivers 1000µs turn-on settling time to ±0.01% of final value - optimized for use with 14-bit and higher-resolution ADCs/DACs where reference stability directly impacts system ENOB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.004V (±0.08%) at +25°C - ensures 14-bit DAC full-scale error remains <1 LSB over temperature when used as reference. |
| Tempco | 5ppm/°C max (–40°C to +125°C) - limits output drift to ≤0.625mV over full range, critical for precision sensor front-ends. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 5.2V supply, supporting single-supply 5V systems with margin. |
| Quiescent Current | 40µA typical, ≤85µA over temperature - enables multi-year battery life in portable 5V-referenced measurement devices. |
| Noise (0.1–10Hz) | 40µVP-P - contributes <0.0008 LSB RMS noise to a 5V-referenced 16-bit ADC (LSB = 76.3µV). |
| Load Regulation | 0.01–0.10mV/mA - maintains output stability under dynamic load changes typical in multiplexed sensor arrays. |
| Line Regulation | 2–50µV/V - minimizes sensitivity to supply ripple in noisy industrial power rails. |
Pinout & Package
MAX6133BASA50+ is housed in an 8-pin SOIC (SO) package per JEDEC MS-012, 150-mil body width, with standard gull-wing leads. Pin 1 is marked by a beveled corner or dot; device orientation follows standard SOIC top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7 | N.C. | No internal connection - must remain unconnected or tied to GND for mechanical stability; no electrical function. |
| 2 | IN | Positive supply input - accepts 5.2V to 12.6V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 4 | GND | Analog ground reference - serves as return path for reference output and supply current; must connect to clean system AGND plane. |
| 5, 8 | I.C. | Internally connected - not accessible externally; must not be wired or loaded. |
| 6 | OUT | Stable 5.000V reference output - requires ≥0.1µF ceramic capacitor to GND; supports capacitive loads up to 100µF. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power series architecture | 40µA supply current independent of VIN - eliminates wasted current seen in shunt references, improving efficiency in always-on monitoring nodes. |
| Laser-trimmed thin-film resistors | ±0.08% initial accuracy (B grade) - reduces calibration overhead in production test for handheld multimeters and portable DAQ units. |
| Low-noise bandgap core | 40µVP-P (0.1–10Hz) at 5V - enables high-resolution DC measurements without external filtering in weigh-scale and strain-gauge interfaces. |
| Wide input voltage range | 5.2V to 12.6V - supports direct connection to unregulated 6V–12V industrial supplies or buck converter outputs with minimal headroom. |
| High output drive capability | 15mA source current - drives multiple ADC reference inputs, op-amp bias networks, or small logic loads without external buffers. |
Applications
| Portable Precision DMMs | Industrial 4–20mA Transmitters |
|---|---|
|
Use Scenario: Handheld digital multimeter requiring stable 5V reference for 16-bit SAR ADC and auto-ranging front-end. IC Role / Device Role / Timing Role: Primary voltage reference supplying excitation and scaling for precision resistor ladder and current-sense amplifier. Use Value: 5ppm/°C tempco and 40µVP-P noise ensure <1 LSB drift over –10°C to +50°C operating range, meeting IEC 61010 Class II accuracy requirements. |
Use Scenario: Loop-powered 4–20mA transmitter with HART modulation, operating from 12–42V supply in hazardous environments. IC Role / Device Role / Timing Role: Stable 5V reference for DAC generating analog output and for microcontroller VREF in isolated signal chain. Use Value: 200mV dropout enables regulation from 5.2V derived via low-dropout linear regulator, minimizing self-heating and extending component lifetime in sealed enclosures. |
| Medical Patient Monitoring | Automated Test Equipment (ATE) |
|
Use Scenario: Battery-operated ECG module requiring ultra-low-power, low-noise reference for 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Precision reference for analog front-end gain stages and ADC conversion reference, shared across multiple channels. Use Value: 40µA quiescent current extends single-cell Li-ion battery life beyond 100 hours; 0.08% initial accuracy eliminates per-unit calibration during manufacturing. |
Use Scenario: Rack-mounted ATE system performing automated calibration of DMMs and oscilloscopes using 5V reference standards. IC Role / Device Role / Timing Role: Traceable 5.000V reference source for metrology-grade calibration fixtures and self-test circuits. Use Value: 120ppm thermal hysteresis and 40ppm long-term stability (1000h) support NIST-traceable calibration intervals without field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.000V, ±0.02% initial accuracy, 3ppm/°C max tempco, 950µA quiescent current | Higher accuracy and lower drift, but 23× higher supply current limits battery life | Select for metrology-grade calibration where power is secondary to stability; avoid in portable instruments. |
| REF5050AIDR | 5.000V, ±0.05% initial accuracy, 3ppm/°C max tempco, 950µA quiescent current, SO-8 | Superior tempco and accuracy, but incompatible quiescent current for low-power designs | Prefer when system has regulated 5V rail and requires best-in-class drift performance; verify thermal design for 950µA dissipation. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX6133BASA50+ trades 2–3× higher tempco and ±0.03–0.06% lower initial accuracy for 23× lower quiescent current - making it uniquely suitable for always-on, battery-powered 5V reference applications where µA-level supply current is non-negotiable.
Availability
MAX6133BASA50+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial transmitters, medical monitoring devices, and automated test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6133BASA50+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6133 series was designed specifically for portable and communication systems needing ultra-low-power, high-accuracy voltage references in compact SO and µMAX packages - targeting applications where battery life and board space are constrained.
FAQ
What is the maximum load current supported by the MAX6133BASA50+?
The MAX6133BASA50+ guarantees 15mA output source current capability across its full operating temperature range (–40°C to +125°C). This is confirmed in the Electrical Characteristics table under "Output Source-Current Capability" and validated in load regulation curves showing stable operation up to 15mA with ≤0.10mV/mA deviation. Exceeding this may cause dropout or accuracy degradation.
Does the MAX6133BASA50+ require an input bypass capacitor?
Yes - the MAX6133BASA50+ requires a 0.1µF ceramic capacitor between IN and GND for optimal line-transient performance, as specified in the Applications Information section. While the device functions without it under static conditions, omitting this capacitor degrades PSRR and increases output perturbation during supply fluctuations, especially critical in noisy industrial environments.
Can the MAX6133BASA50+ be used with a 5.0V input supply?
No - the MAX6133BASA50+ requires a minimum input voltage of 5.2V to maintain regulation at 5.000V output, as defined by its 200mV max dropout voltage. At exactly 5.0V input, the device enters dropout and cannot sustain rated accuracy or load capability. A 5.5V or higher supply is recommended for robust margin across temperature and load variation.
What is the output voltage noise specification for the MAX6133BASA50+?
The MAX6133BASA50+ specifies 40µVP-P (0.1Hz to 10Hz) and 26µVRMS (10Hz to 1kHz) output voltage noise at 5.000V output. These values are measured under standard conditions (VIN = 5.5V, CLOAD = 0.1µF, IOUT = 0) and appear in the ELECTRICAL CHARACTERISTICS-MAX6133_50 table - directly impacting effective resolution in high-precision DC measurement systems.
Is the MAX6133BASA50+ pin-compatible with other MAX6133 variants?
Yes - all MAX6133 variants, including MAX6133BASA50+, share identical 8-pin SO package pinout and terminal functions (IN, GND, OUT, N.C., I.C.). The suffix "BASA50+" denotes B-grade accuracy (±0.08%), SO package, and 5.000V output - but mechanical and electrical pin compatibility is maintained across A/B grades and 2.5V/3.0V/4.096V/5.0V versions in the same package type.
MAX6133BASA50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 40µVp-p
- Noise - 10Hz to 10kHz:
- 26µVrms
- Voltage - Input:
- 5.2V ~ 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
MAX6133BASA50+ FAQ
1.How can I place an order for MAX6133BASA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6133BASA50+ 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 MAX6133BASA50+ reliable?
The price and inventory of MAX6133BASA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6133BASA50+ is usually 5 days.
3.What payment methods are accepted for MAX6133BASA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6133BASA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6133BASA50+?
MAX6133BASA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6133BASA50+ 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 MAX6133BASA50+?
For technical support, including MAX6133BASA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6133BASA50+ requirements.
6.How does Aetrix verify that MAX6133BASA50+ is sourced from the original manufacturer or authorized distributors?
All MAX6133BASA50+ 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 MAX6133BASA50+ meets industry standards.
7.What is the process for return or replacement of MAX6133BASA50+?
All MAX6133BASA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6133BASA50+, 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 MAX6133BASA50+ part is unused and in its original packaging.
Return procedure for MAX6133BASA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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