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Analog Devices Inc./Maxim Integrated MAX6143BASA33+T
- Part No.:
- MAX6143BASA33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143BASA33+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,139
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Product details
Overview
MAX6143BASA33+T from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature-sensing output (TEMP), 3.3V nominal output, ±0.10% initial accuracy, 10ppm/°C max temperature coefficient over –40°C to +125°C, and active-low shutdown (SHDN) reducing supply current to 0.01µA - used in high-resolution ADC/DAC systems requiring stable reference and on-die thermal monitoring.
For engineers reviewing the MAX6143BASA33+T datasheet, MAX6143BASA33+T pinout, MAX6143BASA33+T application, or MAX6143BASA33+T equivalent, key selection criteria include its 3.3V output tolerance, TEMP output linearity (2.1mV/°C), TRIM input adjustability (±6%), no-output-capacitor stability, and automotive-grade operating range.
Technical Context
The MAX6143BASA33+T employs bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 10ppm/°C max TCVOUT and ±0.10% initial output accuracy at 3.3V. It integrates a dedicated TEMP terminal delivering 630mV at +25°C with 2.1mV/°C slope for die temperature sensing.
It supports bidirectional load drive (30mA source / 2mA sink), operates from (VOUT + 2V) to +40V input (i.e., 5.3V–40V for 3.3V output), and features logic-compatible SHDN (VIH = 2.0V, VIL = 0.8V) and TRIM input enabling ±6% output adjustment via external resistive divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V nominal, min 3.2967V / max 3.3033V at +25°C - ensures compatibility with 3.3V logic and ADC full-scale ranges. |
| Initial Accuracy | ±0.10% at +25°C - guarantees ≤±3.3mV absolute error without calibration. |
| Temp Coefficient | 10ppm/°C max (–40°C to +125°C) - limits drift to ≤±0.825mV across full automotive temperature range. |
| Noise (0.1–10Hz) | 5µVP-P typical - enables <18-bit effective resolution in precision data acquisition. |
| Supply Current | 650µA max (–40°C to +125°C) - supports low-power battery-operated instrumentation. |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - provides direct linear die temperature measurement without external sensor. |
| Shutdown Current | 0.01µA typical - extends system standby time in energy-constrained applications. |
Pinout & Package
MAX6143BASA33+T is housed in an 8-pin SOIC (SO) package, 3.9mm × 4.9mm body, 1.27mm pitch, RoHS-compliant, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected externally per datasheet. |
| 2 | IN | Positive power input (5.3V to 40V); supplies internal bandgap core and output stage. |
| 3 | TEMP | Temperature-proportional analog output (630mV @ +25°C, 2.1mV/°C); unbuffered, requires high-Z readout. |
| 4 | GND | Analog ground reference for all internal circuits and output regulation. |
| 5 | TRIM | Adjustment node for ±6% output tuning via external resistor divider between OUT and GND. |
| 6 | OUT | Stable 3.3V reference output; capable of sourcing 30mA or sinking 2mA; stable with up to 100µF capacitive load. |
| 7 | SHDN | Active-low enable control; <0.8V disables device (0.01µA ISHDN), ≥2.0V enables normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| No-output-capacitor stability | Eliminates mandatory bypass capacitor - reduces BOM count and PCB area in space-constrained designs. |
| Integrated die temperature sensor | Linear TEMP output (2.1mV/°C) enables real-time junction monitoring without external thermistor or IC. |
| Wide input voltage range | Operates from (VOUT + 2V) to +40V - accommodates 12V/24V industrial rails and unregulated supplies. |
| Trim-adjustable output | ±6% fine-tuning via TRIM pin - allows field calibration or compensation for downstream component tolerances. |
| Automotive temperature grade | Specified from –40°C to +125°C - qualified for under-hood and industrial control applications. |
Applications
| High-Resolution Data Acquisition | Industrial Voltage Regulator Reference |
|---|---|
|
Use Scenario: 16-bit+ SAR or delta-sigma ADCs in portable test equipment requiring sub-LSB reference stability over temperature and time. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale input range; TEMP output monitors ADC die self-heating to correct gain drift. Use Value: 10ppm/°C TCVOUT and 5µVP-P noise ensure <0.5 LSB total error contribution across –40°C to +125°C. |
Use Scenario: Precision LDO or switching regulator feedback network where reference stability directly determines output accuracy. IC Role / Device Role / Timing Role: Fixed 3.3V reference feeding error amplifier; TRIM pin enables factory-set output voltage trimming during production calibration. Use Value: ±0.10% initial accuracy and 650µA quiescent current allow tight regulation without compromising efficiency or startup time. |
| Digital Voltmeter Front-End | Threshold Detection with Thermal Compensation |
|
Use Scenario: Bench DVMs measuring mV–10V ranges with auto-ranging and auto-zero functions demanding ultra-low drift. IC Role / Device Role / Timing Role: Master reference for integrator and comparator stages; TEMP output feeds microcontroller for ambient-compensated zeroing. Use Value: 120ppm thermal hysteresis and 50ppm long-term stability (1000h) ensure repeatable measurements across daily calibration cycles. |
Use Scenario: Overtemperature protection circuit in motor drives or power converters where trip point must track silicon junction temperature. IC Role / Device Role / Timing Role: Dual-function device: 3.3V reference sets comparator threshold; TEMP output scales threshold voltage linearly with die temperature. Use Value: Matched thermal coefficients between reference and TEMP path eliminate need for separate sensor and reduce component count by one. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA33+ | Lower 3ppm/°C TCVOUT, ±0.04% initial accuracy, but no TEMP output or TRIM pin; 350µA IQ. | Suitable only where temperature sensing is unnecessary and tighter accuracy is prioritized over adjustability. | Select when highest stability is required and thermal monitoring is handled separately. |
| REF3333AIDBVR | 3ppm/°C TCVOUT, ±0.15% initial accuracy, no TEMP or TRIM; 4.5µA IQ; SOT-23-5 package. | Battery-powered IoT sensors needing ultra-low quiescent current, not automotive temp range or dual functionality. | Choose for space- and power-constrained designs lacking need for die temperature feedback. |
Compared with MAX6143BASA33+T, MAX6126AASA33+ offers superior accuracy and drift but sacrifices TEMP/ TRIM flexibility, while REF3333AIDBVR trades off temperature range and feature set for nanoamp-level supply current in compact packaging.
Availability
MAX6143BASA33+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, industrial voltage regulation, digital instrumentation, and automotive-grade thermal monitoring applications requiring stable component supply and guaranteed long-term availability.
Supply support for MAX6143BASA33+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 industrial, automotive, communications, and computing markets.
The MAX6143 series was developed as a single-chip solution combining high-accuracy voltage reference and on-die temperature transducer for systems requiring coordinated reference stability and thermal awareness - especially in ADC/DAC, metering, and safety-critical control.
FAQ
What is the guaranteed initial accuracy of the MAX6143BASA33+T at +25°C?
The MAX6143BASA33+T has a guaranteed initial output voltage accuracy of ±0.10% at +25°C, corresponding to a 3.3V output tolerance of ±3.3mV (3.2967V to 3.3033V). This specification is production-tested and applies across the full 8-pin SOIC package variant without derating.
Does the MAX6143BASA33+T require an output bypass capacitor for stability?
No, the MAX6143BASA33+T does not require an output bypass capacitor for stability. It is internally compensated and remains stable with capacitive loads up to 100µF. This eliminates the need for external output capacitance in most applications, simplifying layout and reducing bill-of-materials cost.
What is the function and electrical behavior of the TEMP pin on the MAX6143BASA33+T?
The TEMP pin on the MAX6143BASA33+T outputs a voltage proportional to die temperature: 630mV at +25°C with a slope of 2.1mV/°C. It is an unbuffered analog output requiring high-impedance measurement (≥1MΩ) to avoid loading errors and is not intended to drive significant current.
Can the output voltage of the MAX6143BASA33+T be adjusted, and if so, how?
Yes, the MAX6143BASA33+T output voltage can be trimmed ±6% using the TRIM pin. Connect a resistive divider between OUT and GND, with the wiper or center tap connected to TRIM. The output change follows ∆VOUT = 2 × (VTRIM − VOUT/2) × k, where k ≈ ±6% typical.
What is the maximum input voltage range for the MAX6143BASA33+T when configured for 3.3V output?
For the MAX6143BASA33+T with 3.3V output, the specified input voltage range is 5.3V to +40V - defined as (VOUT + 2V) minimum to +40V maximum. Operation below 5.3V is not guaranteed, and exceeding +40V may cause permanent damage per absolute maximum ratings.
MAX6143BASA33+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:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°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
MAX6143BASA33+T FAQ
1.How can I place an order for MAX6143BASA33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143BASA33+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 MAX6143BASA33+T reliable?
The price and inventory of MAX6143BASA33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143BASA33+T is usually 5 days.
3.What payment methods are accepted for MAX6143BASA33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143BASA33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143BASA33+T?
MAX6143BASA33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143BASA33+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 MAX6143BASA33+T?
For technical support, including MAX6143BASA33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143BASA33+T requirements.
6.How does Aetrix verify that MAX6143BASA33+T is sourced from the original manufacturer or authorized distributors?
All MAX6143BASA33+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 MAX6143BASA33+T meets industry standards.
7.What is the process for return or replacement of MAX6143BASA33+T?
All MAX6143BASA33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143BASA33+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 MAX6143BASA33+T part is unused and in its original packaging.
Return procedure for MAX6143BASA33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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