My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6143AASA50+
- Part No.:
- MAX6143AASA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143AASA50+.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:377
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6143AASA50+ from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature-sensing output (TEMP), delivering a stable +5.0V reference with ±0.06% initial accuracy, 3ppm/°C max temperature coefficient over –40°C to +125°C, and 9µVP-P (0.1Hz–10Hz) noise - ideal for 16-bit+ data acquisition systems requiring metrology-grade stability.
For engineers reviewing the MAX6143AASA50+ datasheet, MAX6143AASA50+ pinout, MAX6143AASA50+ application, or MAX6143AASA50+ equivalent, key selection criteria include its automotive-grade temperature range, TRIM-adjustable output, shutdown current of 0.01µA, no-output-capacitor stability, and dual-role TEMP output for system-level thermal monitoring.
Technical Context
The MAX6143AASA50+ 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. Its TEMP pin provides a linear 2.1mV/°C output referenced to die temperature, enabling direct thermal compensation in precision sensor interfaces.
It features active-low SHDN control, TRIM input supporting ±6% output adjustment via external resistor divider, and operates from (VOUT + 2V) up to +40V input - supporting wide-supply industrial and automotive rails without external regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V (±0.06% initial accuracy at +25°C; min/max = 4.997V/5.003V) |
| Tempco | 3ppm/°C max (–40°C to +125°C); enables <1 LSB error in 16-bit ADCs over full automotive range) |
| Noise (0.1–10Hz) | 9µVP-P - supports high-resolution SAR and delta-sigma ADCs without additional filtering |
| Supply Current | 320–700µA (varies with temp & input voltage); 0.01µA in shutdown - extends battery life in portable instrumentation |
| Load Drive | Sources up to 30mA / sinks 2mA - directly drives ADC reference inputs, op-amp bias networks, and small DACs |
| Input Range | +7V to +40V - accommodates unregulated 12V/24V automotive and industrial supplies with margin |
| Stability | No output capacitor required; stable with up to 100µF capacitive load - simplifies layout in space-constrained PCBs |
Pinout & Package
MAX6143AASA50+ is housed in an 8-pin SO (SOIC-N) package per JEDEC MS-012, 150-mil body width, with exposed pad not present. Pin 1 and Pin 8 are internally connected (I.C.) and must remain unconnected on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. (Internally Connected) | Unused internal node; must be left floating - no external connection allowed |
| 2 | IN | Positive supply input; accepts 7V–40V; requires local 0.1µF ceramic bypass to GND |
| 3 | TEMP | Digital-temperature transducer output; 630mV @ 25°C, +2.1mV/°C slope - used for die-temp readback or compensation |
| 4 | GND | Analog ground reference; must be low-impedance star point shared with REF and ADC ground |
| 5 | TRIM | Voltage-adjust input; connects to center tap of resistive divider between OUT and GND for ±6% fine-tuning |
| 6 | OUT | +5.0V precision reference output; capable of sourcing 30mA with <15ppm/mA load regulation |
| 7 | SHDN | Active-low enable; <0.8V = shutdown (0.01µA IQ), >2.0V = active - compatible with 3.3V/5V logic |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear TEMP output (2.1mV/°C) enables real-time die-temperature monitoring without external sensors |
| Trim-adjustable reference | TRIM pin allows ±6% output voltage correction using simple resistor network - eliminates need for custom trimming ICs |
| Capacitor-free stability | Operates stably with zero output capacitance - reduces BOM count and saves board area in compact designs |
| Automotive temperature range | Specified from –40°C to +125°C - qualified for under-hood and engine-control applications |
| Low-shutdown current | 0.01µA shutdown supply current - supports multi-year battery operation in remote sensing nodes |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: 16-bit/18-bit SAR or delta-sigma ADC in portable multimeter or calibration equipment. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog-to-digital conversion. Use Value: 3ppm/°C tempco and 9µVP-P noise ensure <1 LSB total error across –40°C to +85°C operating range. | Use Scenario: Reference and temperature monitoring for pressure/position sensors in engine control units. IC Role / Device Role / Timing Role: Dual-function device providing stable 5V reference and die-temperature feedback for sensor linearization. Use Value: Eliminates separate temp sensor and reference IC, reducing component count and thermal mismatch errors. |
| Industrial PLC Analog Input Modules | Battery-Powered Instrumentation |
Use Scenario: Multi-channel 4–20mA receiver with isolated ADC in programmable logic controller backplane. IC Role / Device Role / Timing Role: Precision reference for current-to-voltage conversion and ADC front-end; TEMP used for ambient drift compensation. Use Value: Wide 7–40V input range accepts unregulated 24V rail; no output cap simplifies isolation barrier design. | Use Scenario: Handheld gas detector with micro-power MCU and electrochemical sensor interface. IC Role / Device Role / Timing Role: Low-quiescent reference enabling long battery life; SHDN controlled by MCU to power down during sleep cycles. Use Value: 0.01µA shutdown current extends 2xAA battery life beyond 5 years in duty-cycled operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5.0V output, 3ppm/°C max tempco, but higher 12µVP-P noise and requires 1µF output capacitor | Not suitable where capacitor-free operation or ultra-low noise is mandatory | Choose REF5050AIDR only if TI's ecosystem integration or lower cost outweighs noise/stability trade-offs |
| ADR4550BRZ | 5.0V output, 3ppm/°C max tempco, 8.5µVP-P noise, but no TEMP output and 500µA typical IQ | Lacks integrated temperature sensing - requires external sensor for thermal compensation | Select ADR4550BRZ when TEMP functionality is unnecessary and lowest possible noise is critical |
Compared with REF5050AIDR and ADR4550BRZ, the MAX6143AASA50+ uniquely combines capacitor-free stability, integrated die-temperature sensing, and sub-10µVP-P noise - making it optimal for space-constrained, thermally aware, high-resolution measurement systems.
Availability
MAX6143AASA50+ is available at Aetrix Electronics and suitable for high-precision data acquisition, automotive sensor signal conditioning, and industrial PLC analog input modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6143AASA50+ 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 MAX6143AASA50+ belongs to Maxim's high-accuracy voltage reference family, engineered specifically for metrology-grade systems where long-term stability, low noise, and multi-function integration (reference + temperature) are essential.
FAQ
What is the guaranteed initial accuracy of the MAX6143AASA50+ at +25°C?
The MAX6143AASA50+ guarantees ±0.06% initial accuracy at +25°C, corresponding to a 5.0V output tolerance of ±3mV (4.997V to 5.003V). This specification is production-tested and applies across the full automotive temperature range when combined with its 3ppm/°C tempco performance.
Does the MAX6143AASA50+ require an output bypass capacitor for stability?
No, the MAX6143AASA50+ does not require an output bypass capacitor for stability and is explicitly characterized to remain stable with zero output capacitance. It remains stable with capacitive loads up to 100µF, offering flexibility in transient response tuning without compromising stability.
What is the function and output behavior of the TEMP pin on the MAX6143AASA50+?
The TEMP pin on the MAX6143AASA50+ provides a voltage proportional to die temperature: 630mV at +25°C with a slope of +2.1mV/°C. It is designed for direct connection to an ADC input to monitor junction temperature - critical for thermal derating and sensor compensation - and must not be loaded to maintain accuracy.
Can the output voltage of the MAX6143AASA50+ be adjusted, and how is the TRIM pin used?
Yes, the MAX6143AASA50+ output 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 shifts linearly with TRIM voltage; for example, applying 2.5V to TRIM adjusts +5.0V output by approximately –150mV (–3%).
What is the maximum input voltage and minimum headroom required for the MAX6143AASA50+ to regulate properly?
The MAX6143AASA50+ accepts input voltages from +7V to +40V. Its minimum input-output differential (dropout) is 2.0V at 30mA load and +25°C, increasing slightly at temperature extremes - so VIN must be ≥7.0V for reliable +5.0V regulation across all conditions.
MAX6143AASA50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 9µVp-p
- Noise - 10Hz to 10kHz:
- 14.5µVrms
- Voltage - Input:
- 7V ~ 40V
- Current - Supply:
- 700µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143AASA50+ FAQ
1.How can I place an order for MAX6143AASA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143AASA50+ 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 MAX6143AASA50+ reliable?
The price and inventory of MAX6143AASA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143AASA50+ is usually 5 days.
3.What payment methods are accepted for MAX6143AASA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143AASA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143AASA50+?
MAX6143AASA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143AASA50+ 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 MAX6143AASA50+?
For technical support, including MAX6143AASA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143AASA50+ requirements.
6.How does Aetrix verify that MAX6143AASA50+ is sourced from the original manufacturer or authorized distributors?
All MAX6143AASA50+ 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 MAX6143AASA50+ meets industry standards.
7.What is the process for return or replacement of MAX6143AASA50+?
All MAX6143AASA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143AASA50+, 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 MAX6143AASA50+ part is unused and in its original packaging.
Return procedure for MAX6143AASA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6143AASA50+ Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
