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Analog Devices Inc./Maxim Integrated MAX6143AASA33+T
- Part No.:
- MAX6143AASA33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143AASA33+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,681
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Product details
Overview
MAX6143AASA33+T from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature sensor output, delivering a stable +3.3V reference (±0.06% initial accuracy), 3ppm/°C max temperature coefficient, and 5µVP-P (0.1–10Hz) noise - designed for high-resolution ADC/DAC systems requiring metrology-grade stability over -40°C to +125°C.
For engineers reviewing the MAX6143AASA33+T datasheet, MAX6143AASA33+T pinout, MAX6143AASA33+T application, or MAX6143AASA33+T equivalent, key selection criteria include its TRIM-adjustable output, TEMP pin's 2.1mV/°C linear transducer response, shutdown current of 0.01µA, and stability without output bypass capacitors up to 100µF.
Technical Context
The MAX6143AASA33+T employs bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C tempco and ±0.06% initial accuracy across -40°C to +125°C. Its TEMP output provides a die-temperature-proportional voltage (630mV at +25°C, 2.1mV/°C), while the TRIM input enables ±6% output adjustment via external resistive divider.
It operates from (VOUT + 2V) to +40V input (i.e., 5.3V–40V for 3.3V version), sources up to 30mA, sinks 2mA, and achieves 180µs turn-on settling to 0.1% with 50pF load. Shutdown reduces supply current to 0.01µA, and it remains stable with no output capacitor required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +3.300V (nominal), ±0.06% initial accuracy = ±1.98mV tolerance at +25°C |
| Tempco | 3ppm/°C max (−40°C to +125°C) = ±0.264mV drift over full range |
| Noise (0.1–10Hz) | 5µVP-P typical - supports 16-bit+ ADCs without added filtering |
| Supply Range | 5.3V to 40V - accommodates wide-input industrial rails and battery-backed systems |
| Load Current | Sources 30mA / sinks 2mA - drives ADC references, op-amp biasing, and small analog loads directly |
| Shutdown Current | 0.01µA max - enables multi-year battery operation in portable instrumentation |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C - calibrated die-temperature sensing without external sensor |
Pinout & Package
MAX6143AASA33+T is housed in an 8-pin SOIC (SO) package (JEDEC MS-012, 150-mil width), with pins 1 and 8 internally connected and not externally accessible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power supply input | Accepts 5.3V–40V; requires ≥2V headroom above VOUT for regulation |
| TEMP (Pin 3) | Digital-temperature-proportional analog output | Provides 2.1mV/°C linear voltage vs. die temperature; unbuffered, low-impedance source |
| GND (Pin 4) | Analog ground reference | Common return for IN, OUT, SHDN, TRIM, and TEMP; must be low-impedance |
| TRIM (Pin 5) | Output voltage adjustment node | Connects to center tap of resistive divider between OUT and GND for ±6% trimming |
| OUT (Pin 6) | Precision reference voltage output | +3.3V output; stable with 0–100µF capacitive loads; no bypass cap required |
| SHDN (Pin 7) | Active-low shutdown control | Logic-low (<0.8V) disables output and reduces IIN to 0.01µA; tie to IN for normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear 2.1mV/°C TEMP output referenced to die temperature - eliminates need for discrete thermal sensor in space-constrained designs |
| Trim-adjustable reference | ±6% output adjustment via external resistor network on TRIM pin - enables fine calibration without re-spinning PCB |
| No-output-capacitor stability | Stable with 0–100µF output capacitance - saves board area and avoids capacitor aging/reliability concerns |
| Wide supply range | Operates from (VOUT + 2V) to +40V - supports direct connection to unregulated 12V/24V rails or Li-ion stacks |
| Ultra-low shutdown current | 0.01µA max shutdown supply current - extends battery life in portable data loggers and wireless sensors |
Applications
| High-Resolution Data Acquisition | Industrial Process Monitoring |
|---|---|
Use Scenario: 16-bit SAR ADC in programmable logic controller (PLC) analog input module measuring 4–20mA loop signals. IC Role / Device Role / Timing Role: Primary reference voltage source for ADC conversion; TEMP pin monitors internal die temperature to compensate gain drift. Use Value: 3ppm/°C tempco ensures <1 LSB error over −40°C to +85°C ambient, eliminating external calibration cycles. | Use Scenario: Battery-powered remote pressure transmitter with local signal conditioning and wireless telemetry. IC Role / Device Role / Timing Role: Reference for precision sigma-delta ADC and temperature-sensing element for self-compensation. Use Value: 0.01µA shutdown current enables >5-year battery life; TRIM allows field recalibration without hardware change. |
| Automotive Sensor Signal Conditioning | Portable Test Equipment |
Use Scenario: Engine coolant temperature (ECT) sensor interface in automotive ECU with extended temperature range requirement. IC Role / Device Role / Timing Role: Stable 3.3V reference for ratiometric sensor excitation and ADC; TEMP pin validates junction temperature during high-power operation. Use Value: AEC-Q100 qualified (-40°C to +125°C) operation ensures reliability under hood conditions; no output capacitor simplifies layout near noisy power stages. | Use Scenario: Handheld digital multimeter (DMM) requiring accurate DC voltage measurement with auto-ranging and low-power sleep mode. IC Role / Device Role / Timing Role: Precision reference for dual-slope integrator and temperature compensation reference for offset/gain correction. Use Value: 5µVP-P low-frequency noise minimizes measurement uncertainty; shutdown mode reduces quiescent draw below 1µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5033IDR | 3ppm/°C max tempco, ±0.05% initial accuracy, 3.8µVP-P noise, but requires 1µF output capacitor for stability | Higher initial accuracy but less flexible output loading; no integrated temperature sensor | Choose REF5033IDR when absolute initial accuracy is prioritized over integration and capacitor-free design |
| ADR4533BRZ | 2ppm/°C max tempco, ±0.02% initial accuracy, 3.75µVP-P noise, 10mA max output, no TEMP output | Superior long-term stability and lower noise, but lacks temperature sensing and trim capability | Choose ADR4533BRZ for metrology-grade lab equipment where die-temperature monitoring is unnecessary |
Compared with REF5033IDR and ADR4533BRZ, the MAX6143AASA33+T uniquely integrates a calibrated temperature transducer and TRIM functionality in an 8-pin SO package - enabling compact, self-calibrating systems without adding discrete sensors or DAC-based trimming circuits.
Availability
MAX6143AASA33+T is available at Aetrix Electronics and suitable for high-precision data acquisition, automotive sensor interfaces, and portable test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6143AASA33+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, automotive, and communications applications.
The MAX6143 series was developed as a family of high-stability, low-noise voltage references with integrated temperature sensing - targeting applications where reference accuracy, thermal drift compensation, and board-space efficiency are critical.
FAQ
What is the guaranteed initial accuracy of the MAX6143AASA33+T?
The MAX6143AASA33+T has a guaranteed initial accuracy of ±0.06% at +25°C, meaning its output voltage falls within 3.2980V to 3.3020V under no-load conditions at room temperature. This specification is tested and guaranteed across production lots per the device's ordering information table.
Does the MAX6143AASA33+T require an output bypass capacitor?
No, the MAX6143AASA33+T does not require an output bypass capacitor for stability and is explicitly characterized as stable with capacitive loads from 0 to 100µF. This eliminates board area, cost, and reliability risks associated with external capacitors - a key differentiator versus many competing references like REF5033IDR.
How is the TEMP output of the MAX6143AASA33+T calibrated?
The TEMP output of the MAX6143AASA33+T is factory-calibrated to provide 630mV at +25°C with a temperature coefficient of 2.1mV/°C. It reflects die temperature (not ambient), and its linearity is maintained across −40°C to +125°C. Self-heating effects are accounted for in the specification, and loading should be minimized to preserve accuracy.
Can the MAX6143AASA33+T be used with input voltages below 5.3V?
No - the MAX6143AASA33+T requires a minimum input voltage of (VOUT + 2V) = 5.3V for proper regulation. Operation below this threshold results in dropout and loss of specified accuracy, noise, and tempco performance. The device is not rated for operation at 5.0V or lower input.
What is the maximum load current the MAX6143AASA33+T can source?
The MAX6143AASA33+T can source up to 30mA of output current while maintaining its specified accuracy and stability. This capability allows direct driving of ADC reference inputs, op-amp bias networks, and small analog subsystems without external buffers - verified across the full −40°C to +125°C temperature range.
MAX6143AASA33+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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 5µVp-p
- Noise - 10Hz to 10kHz:
- 9.3µVrms
- Voltage - Input:
- 5.3V ~ 40V
- Current - Supply:
- 650µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143AASA33+T FAQ
1.How can I place an order for MAX6143AASA33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143AASA33+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 MAX6143AASA33+T reliable?
The price and inventory of MAX6143AASA33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143AASA33+T is usually 5 days.
3.What payment methods are accepted for MAX6143AASA33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143AASA33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143AASA33+T?
MAX6143AASA33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143AASA33+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 MAX6143AASA33+T?
For technical support, including MAX6143AASA33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143AASA33+T requirements.
6.How does Aetrix verify that MAX6143AASA33+T is sourced from the original manufacturer or authorized distributors?
All MAX6143AASA33+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 MAX6143AASA33+T meets industry standards.
7.What is the process for return or replacement of MAX6143AASA33+T?
All MAX6143AASA33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143AASA33+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 MAX6143AASA33+T part is unused and in its original packaging.
Return procedure for MAX6143AASA33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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