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Analog Devices Inc./Maxim Integrated MAX6143AASA41+T
- Part No.:
- MAX6143AASA41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143AASA41+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,521
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Product details
Overview
MAX6143AASA41+T from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature sensor output (TEMP), 4.096V nominal output, ±0.06% initial accuracy, 3ppm/°C max temperature coefficient, and active-low shutdown (SHDN). It sources up to 30mA, operates from (VOUT + 2V) to +40V input, and targets high-resolution ADC/DAC systems requiring stable, low-drift references in automotive environments.
For engineers reviewing the MAX6143AASA41+T datasheet, MAX6143AASA41+T pinout, MAX6143AASA41+T application, or MAX6143AASA41+T equivalent, key selection criteria include its 4.096V output compatibility with 12-bit–16-bit SAR ADCs, TEMP output linearity (2.1mV/°C), trim capability via resistive divider, no-output-capacitor stability, and -40°C to +125°C automotive-grade operation.
Technical Context
The MAX6143AASA41+T uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C tempco and ±0.06% initial accuracy over -40°C to +125°C. Its TEMP pin delivers a linear 2.1mV/°C transducer output referenced to die temperature, enabling on-chip thermal monitoring without external sensors.
It integrates an active-low SHDN input that reduces quiescent current to 0.01µA, and a TRIM terminal allowing ±6% output adjustment via external resistor network. The device is internally compensated and remains stable with capacitive loads up to 100µF - eliminating mandatory output bypassing while supporting fast turn-on settling (200µs to 0.1%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.06% (±2.46mV) at +25°C - matches standard 12-bit DAC/ADC full-scale scaling |
| Tempco (TCVOUT) | 3ppm/°C max (-40°C to +125°C) - ensures ≤±0.5 LSB drift over full range in 16-bit systems |
| Noise (0.1Hz–10Hz) | 7µVP-P typical - supports 18-bit effective resolution in precision data acquisition |
| Supply Current | 320–650µA (max at +125°C) - enables low-power battery-backed instrumentation |
| Shutdown Current | 0.01µA typical - extends shelf life and sleep-mode runtime in portable systems |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C slope - provides calibrated die-temperature sensing without calibration |
| Load Drive | Sources 30mA / sinks 2mA - directly drives ADC reference inputs and small analog buffers |
Pinout & Package
MAX6143AASA41+T is housed in an 8-pin SOIC (SO) package (JEDEC MS-012AA, 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 6.1V to +40V; requires ≥2V headroom above VOUT for regulation |
| TEMP (Pin 3) | Digital-temperature transducer output | 630mV @ +25°C, 2.1mV/°C slope - used for die-temp monitoring or cold-junction compensation |
| 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% fine-tuning |
| OUT (Pin 6) | Precision reference voltage output | 4.096V ±0.06%; stable with 0–100µF capacitive load; no bypass capacitor 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 |
|---|---|
| Bandgap-based curvature correction | Enables 3ppm/°C tempco without external compensation components |
| Laser-trimmed thin-film resistors | Guarantees ±0.06% initial accuracy without post-package trimming |
| No-output-capacitor stability | Eliminates board space and BOM cost for reference bypass caps; simplifies layout |
| Integrated TEMP output | Provides factory-calibrated 2.1mV/°C die-temperature signal for thermal management |
| Wide input range (VOUT+2V to +40V) | Supports direct connection to unregulated 12V/24V automotive rails with minimal dropout |
| Trim-enabled output adjustment | Allows system-level calibration via external potentiometer (e.g., MAX5436) without redesign |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: 16-bit SAR ADC in engine control unit measuring throttle position and oxygen sensor signals. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC conversion and TEMP output for cold-junction compensation of thermocouple-based exhaust gas sensors. Use Value: Enables <±0.5 LSB total error over -40°C to +125°C, meeting ASIL-B functional safety requirements for analog front-end accuracy. |
Use Scenario: Battery management system (BMS) monitoring cell voltage and pack temperature in EV traction batteries. IC Role / Device Role / Timing Role: Supplies precise 4.096V reference for 12-bit delta-sigma ADCs measuring cell voltages, while TEMP output monitors die temperature during high-current charge/discharge cycles. Use Value: Eliminates need for separate temperature sensor IC; 3ppm/°C tempco ensures voltage measurement accuracy remains within ±1mV over full automotive temperature range. |
| Portable Precision Instrumentation | Industrial PLC Analog Input Modules |
Use Scenario: Handheld digital multimeter with autoranging and 5½-digit display. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope and sigma-delta converters; SHDN enables automatic power-down between measurements. Use Value: 7µVP-P low-frequency noise and 0.01µA shutdown current extend battery life >200 hours per charge while maintaining 0.01% measurement accuracy. |
Use Scenario: DIN-rail mounted PLC module digitizing 4–20mA current loops and thermocouple inputs. IC Role / Device Role / Timing Role: Delivers 4.096V reference for simultaneous 16-channel ADC sampling and supplies TEMP signal for ambient temperature compensation of input conditioning amplifiers. Use Value: No-output-capacitor design allows compact PCB layout in space-constrained modules; 30mA sourcing drives multiple op-amp reference buffers without external boost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040AIDR | 4.096V, 3ppm/°C, ±0.05% initial accuracy; higher 1.2µVP-P noise (0.1–10Hz); requires 1µF output cap for stability | Superior initial accuracy but higher noise and mandatory output capacitance limits layout flexibility | Prefer REF5040AIDR only when tighter initial tolerance outweighs noise and capacitor constraints |
| ADR444BRZ | 4.096V, 3ppm/°C, ±0.04% initial accuracy; 5.5µVP-P noise; no TEMP output; 10mA max source current | Lacks integrated temperature sensor and lower drive capability restricts use in multi-channel buffered designs | Select ADR444BRZ when TEMP functionality is unnecessary and ultra-high initial accuracy is critical |
Compared with REF5040AIDR and ADR444BRZ, MAX6143AASA41+T uniquely combines 4.096V output, automotive temperature range, integrated TEMP transducer, 30mA sourcing, and capacitor-free stability - making it optimal for space- and feature-constrained embedded systems where thermal awareness and robust load drive are essential.
Availability
MAX6143AASA41+T is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input modules, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6143AASA41+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing markets.
The MAX6143 product line delivers high-accuracy, low-drift voltage references with integrated temperature sensing for demanding applications including automotive sensor interfaces, precision data acquisition, and battery-powered instrumentation.
FAQ
What is the exact output voltage tolerance and temperature coefficient of the MAX6143AASA41+T?
The MAX6143AASA41+T has a nominal output voltage of 4.096V with ±0.06% initial accuracy (±2.46mV) at +25°C and a maximum temperature coefficient of 3ppm/°C over the full -40°C to +125°C operating range. These values are guaranteed by production testing and laser trimming, and are explicitly specified in the MAX6143AASA41+T electrical characteristics table for the 4.096V variant.
Does the MAX6143AASA41+T require an output bypass capacitor for stability?
No, the MAX6143AASA41+T does not require an output bypass capacitor for stability. It is internally compensated and remains stable with capacitive loads from 0 to 100µF. This eliminates board area and BOM cost associated with external capacitors, and is confirmed in both the General Description and Applications Information sections of the MAX6143AASA41+T datasheet.
How is the TEMP output of the MAX6143AASA41+T calibrated and what is its practical use?
The TEMP output of the MAX6143AASA41+T is factory-calibrated to 630mV at +25°C with a slope of 2.1mV/°C, providing a linear voltage proportional to die temperature. It is used for on-chip thermal monitoring, cold-junction compensation in thermocouple circuits, or system-level temperature derating - all without external calibration, as verified in the Electrical Characteristics tables for MAX6143_41.
Can the MAX6143AASA41+T be trimmed, and if so, how much adjustment range does the TRIM pin support?
Yes, the MAX6143AASA41+T supports output voltage trimming via the TRIM pin using a resistive divider between OUT and GND. The TRIM function provides ±3% to ±6% adjustment range depending on configuration, as documented in the "Output Adjustment Range" parameter (±3% min / ±6% typ) for the MAX6143AASA41+T variant in the datasheet's MAX6143_41 electrical characteristics section.
What is the shutdown current and logic threshold behavior of the SHDN pin on the MAX6143AASA41+T?
The SHDN pin on the MAX6143AASA41+T is active-low, with logic-low threshold ≤0.8V and logic-high threshold ≥2.0V. When asserted (≤0.8V), shutdown current drops to 0.01µA typical (≤5µA max) across -40°C to +125°C, as specified in the "Shutdown Supply Current" parameter for the MAX6143AASA41+T in the Electrical Characteristics table.
MAX6143AASA41+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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 7µVp-p
- Noise - 10Hz to 10kHz:
- 11.5µVrms
- Voltage - Input:
- 6.1V ~ 40V
- Current - Supply:
- 650µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143AASA41+T FAQ
1.How can I place an order for MAX6143AASA41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143AASA41+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 MAX6143AASA41+T reliable?
The price and inventory of MAX6143AASA41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143AASA41+T is usually 5 days.
3.What payment methods are accepted for MAX6143AASA41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143AASA41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143AASA41+T?
MAX6143AASA41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143AASA41+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 MAX6143AASA41+T?
For technical support, including MAX6143AASA41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143AASA41+T requirements.
6.How does Aetrix verify that MAX6143AASA41+T is sourced from the original manufacturer or authorized distributors?
All MAX6143AASA41+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 MAX6143AASA41+T meets industry standards.
7.What is the process for return or replacement of MAX6143AASA41+T?
All MAX6143AASA41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143AASA41+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 MAX6143AASA41+T part is unused and in its original packaging.
Return procedure for MAX6143AASA41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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