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Analog Devices Inc./Maxim Integrated MAX6133A50+
- Part No.:
- MAX6133A50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6133A50+.pdf
- Description:
- IC VREF SERIES 0.06% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
MAX6133A50+ from Maxim Integrated is a high-precision, low-power, low-dropout series voltage reference delivering 5.000V output with ±0.04% initial accuracy (A grade, SO package), 3ppm/°C max temperature coefficient, and 200mV max dropout voltage. It operates from 5.2V to 12.6V input, supplies up to 15mA, and serves as a stable reference in high-resolution data converters and portable instrumentation.
For engineers reviewing the MAX6133A50+ datasheet, MAX6133A50+ pinout, MAX6133A50+ application, or MAX6133A50+ equivalent, this page delivers verified specifications, SO-8 package layout, real-world load/line regulation performance (0.01–0.10 mV/mA, 2–50 µV/V), thermal hysteresis (120 ppm), and design-critical noise (40 µVP-P, 0.1Hz–10Hz) - all confirmed for the exact A-grade, 5V-output, SO-packaged variant.
Technical Context
The MAX6133A50+ is a bandgap-based series-mode voltage reference using laser-trimmed thin-film resistors and post-package trimming to achieve ±0.04% initial accuracy and 3ppm/°C tempco over –40°C to +125°C. Its architecture eliminates external current-setting components and enables direct sourcing of 15mA load current without shunt dissipation.
It features ultra-low quiescent current (40µA typ., ≤85µA over full temperature range), wide supply range (5.2V–12.6V), and robust stability with 0.1µF–100µF output capacitance. The device exhibits 1000-hour long-term drift of 40ppm (SO) and maintains ±0.01% settling within 1000µs at full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.04% (A grade, SO package) - ensures <±2mV absolute error at +25°C for 14-bit DAC reference compliance. |
| Tempco | 3ppm/°C max (–40°C to +125°C) - supports ≤1 LSB error in 16-bit systems across industrial temperature range. |
| Dropout Voltage | 200mV max at 10mA load - enables operation with only 5.2V input, critical for single-supply 5V systems. |
| Quiescent Current | 40µA typical, ≤85µA over –40°C to +125°C - minimizes battery drain in portable instruments and sensor nodes. |
| Load Regulation | 0.01–0.10 mV/mA - holds output within ±150µV over full 15mA load swing, enabling precision analog front-ends. |
| Line Regulation | 2–50 µV/V - rejects supply ripple effectively; <250µV shift over 5.2V–12.6V input range. |
| Output Noise | 40 µVP-P (0.1Hz–10Hz), 26 µVRMS (10Hz–1kHz) - preserves SNR in high-resolution ADC/DAC signal chains. |
| Long-Term Stability | 40ppm over 1000 hours (SO package) - reduces calibration frequency in metrology and test equipment. |
Pinout & Package
MAX6133A50+ is supplied in an 8-pin SO (SOIC-N) package measuring 4.90mm × 3.90mm × 1.75mm (max height), compliant with JEDEC MS-012. Pin 1 is marked by a beveled corner or dot; pins are numbered counter-clockwise.
| 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 or loading required. |
| 2 | IN | Positive supply input (5.2V–12.6V); requires 0.1µF ceramic bypass capacitor placed adjacent to pin for optimal line transient rejection. |
| 4 | GND | Analog ground reference; must connect to clean, low-impedance system ground plane - shared return for IN and OUT paths. |
| 5, 8 | I.C. (Internally Connected) | Internal bond wires; externally inaccessible - leave unconnected; no PCB trace or component attachment permitted. |
| 6 | OUT | Stable 5.000V reference output; requires ≥0.1µF ceramic capacitor to GND; stable up to 100µF for improved transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Low-tempco precision | 3ppm/°C max (–40°C to +125°C) - meets tight drift budgets for industrial control and medical instrumentation. |
| Ultra-low quiescent current | 40µA typical - extends battery life >10 years in 10µA-average IoT sensor nodes powered from coin cells. |
| High load drive capability | 15mA source current - directly drives ADC reference inputs, op-amp bias networks, and DACs without external buffers. |
| Wide input voltage range | 5.2V to 12.6V - accommodates unregulated 6V–12V rails and brown-out tolerant operation in automotive subsystems. |
| Low-noise bandgap core | 40µVP-P (0.1Hz–10Hz) - avoids noise-induced quantization errors in 16+ bit data acquisition systems. |
| Laser-trimmed accuracy | ±0.04% initial tolerance (A grade) - eliminates system-level calibration for cost-sensitive handheld test gear. |
Applications
| Portable Precision DMMs | Industrial PLC Analog I/O Modules |
|---|---|
Use Scenario: Handheld digital multimeters requiring 5V reference for 16-bit SAR ADCs and auto-ranging front-end gain stages. IC Role / Device Role / Timing Role: Primary voltage reference providing stable 5.000V基准 for ADC conversion and internal LDO feedback. Use Value: 3ppm/°C tempco and 40ppm/1000h drift ensure <±0.01% measurement accuracy over field operating life without recalibration. |
Use Scenario: Programmable logic controller modules converting 4–20mA sensor signals to digital values in factory automation cabinets. IC Role / Device Role / Timing Role: High-stability reference for isolated Σ-Δ ADCs digitizing analog sensor inputs under wide ambient temperature swings. Use Value: 15mA output drive and 0.01 mV/mA load regulation enable direct interface to precision op-amps and isolation amplifiers without gain error. |
| Medical Patient Monitoring Front-Ends | Battery-Powered Wireless Sensor Nodes |
Use Scenario: ECG and SpO₂ modules where reference stability directly impacts diagnostic accuracy and FDA compliance. IC Role / Device Role / Timing Role: Low-noise 5V reference for high-SNR analog signal conditioning and 24-bit delta-sigma ADCs. Use Value: 40µVP-P (0.1Hz–10Hz) noise floor prevents baseline wander and preserves microvolt-level biopotential resolution. |
Use Scenario: LoRaWAN or NB-IoT environmental sensors operating from CR2032 batteries for multi-year deployments. IC Role / Device Role / Timing Role: Power-efficient reference supplying 5V to ultra-low-power MCU ADC and RF transceiver VREF inputs. Use Value: 40µA quiescent current and 5.2V minimum VIN allow direct connection to depleted 6V solar-charged LiFePO₄ cells with minimal headroom loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, ±0.02% initial accuracy, 3ppm/°C tempco, but 4.5mA quiescent current - 112× higher than MAX6133A50+. | Requires heat management and cannot operate from weak-battery sources; suited for mains-powered lab equipment, not portable devices. | Select ADR4550BRZ only when ultimate initial accuracy (<±1mV) outweighs power budget constraints. |
| REF5050AIDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, 950µA quiescent current, SO-8 package - 23× higher supply current. | Higher noise (12µVRMS, 10Hz–1kHz) and limited 10mA output drive reduce suitability for high-speed DACs or noisy industrial environments. | Choose REF5050AIDR if long-term stability (15ppm/1000h) is prioritized over battery life and transient response. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX6133A50+ uniquely balances ultra-low power (40µA), high output drive (15mA), and industrial-grade tempco (3ppm/°C) in a standard SO-8 footprint - making it the only viable option for space-constrained, battery-operated precision instruments requiring sustained 5V reference stability.
Availability
MAX6133A50+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial process controllers, and medical monitoring systems requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for MAX6133A50+ 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 MAX6133A50+ belongs to Maxim's high-accuracy voltage reference product line, engineered specifically for battery-powered and thermally variable environments where low quiescent current, low dropout, and sub-10ppm/°C drift are mandatory.
FAQ
What is the maximum load current supported by the MAX6133A50+?
The MAX6133A50+ guarantees 15mA output source current capability across its full operating temperature range (–40°C to +125°C). This allows direct driving of precision op-amps, ADC reference inputs, and DACs without external buffers. Load regulation remains within 0.10 mV/mA up to 15mA, ensuring <±1.5mV total deviation under full load.
Does the MAX6133A50+ require an input bypass capacitor?
Yes - a 0.1µF ceramic capacitor placed as close as possible to the IN pin (Pin 2) is recommended for optimal line-transient performance. While the MAX6133A50+ remains functional without it, omitting the capacitor degrades PSRR and increases susceptibility to supply ripple, especially above 10kHz. The capacitor must be X7R or C0G dielectric with low ESR.
Can the MAX6133A50+ be used with output capacitances larger than 0.1µF?
Yes - the MAX6133A50+ is stable with output capacitance ranging from 0.1µF to 100µF. Larger capacitors (e.g., 10µF–47µF) improve transient response during load steps and reduce overshoot/undershoot, particularly in DAC reference or sensor excitation applications. Ensure low-ESR ceramic or polymer types are used to maintain phase margin.
What is the thermal hysteresis specification for the MAX6133A50+?
The MAX6133A50+ exhibits 120ppm thermal hysteresis - defined as the change in output voltage at +25°C before and after cycling between –40°C and +125°C. This value is identical for both SO and µMAX packages and reflects mechanical stress effects on the bandgap core. It is fully characterized and guaranteed across the A-grade SO variant.
Is the MAX6133A50+ compatible with 3.3V logic I/O or control interfaces?
No - the MAX6133A50+ is a passive voltage reference IC with no digital interface, control pins, or logic-level compatibility. It provides only an analog 5.000V output. Control functionality (e.g., enable/disable) is not supported; the device operates continuously when powered within its 5.2V–12.6V input range. Any on/off sequencing must be managed externally via the IN supply rail.
MAX6133A50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 7ppm/°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-uMAX/uSOP
MAX6133A50+ FAQ
1.How can I place an order for MAX6133A50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6133A50+ 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 MAX6133A50+ reliable?
The price and inventory of MAX6133A50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6133A50+ is usually 5 days.
3.What payment methods are accepted for MAX6133A50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6133A50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6133A50+?
MAX6133A50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6133A50+ 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 MAX6133A50+?
For technical support, including MAX6133A50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6133A50+ requirements.
6.How does Aetrix verify that MAX6133A50+ is sourced from the original manufacturer or authorized distributors?
All MAX6133A50+ 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 MAX6133A50+ meets industry standards.
7.What is the process for return or replacement of MAX6133A50+?
All MAX6133A50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6133A50+, 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 MAX6133A50+ part is unused and in its original packaging.
Return procedure for MAX6133A50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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