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Analog Devices Inc./Maxim Integrated MAX6350CSA+T
- Part No.:
- MAX6350CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6350CSA+T.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
MAX6350CSA+T from Maxim Integrated is a precision 5.000V voltage reference IC using buried-zener technology, delivering ±0.02% initial accuracy, 0.5ppm/°C typical temperature coefficient, and 3.0µVp-p (0.1Hz–10Hz) output noise. It operates from 8V to 36V input, supplies ±15mA load current, and targets high-resolution data-conversion systems up to 16 bits.
For engineers reviewing the MAX6350CSA+T datasheet, MAX6350CSA+T pinout, MAX6350CSA+T application, or MAX6350CSA+T equivalent, key selection criteria include its 5V output stability under capacitive loads, optional external trimming (±30mV range), noise-reduction capacitor support, and SO-8 package compatibility with industrial-grade thermal performance (0°C to +70°C).
Technical Context
The MAX6350CSA+T employs a buried-zener core with low-power temperature compensation, achieving near-flat output vs. temperature curves without heater power. Its internal architecture supports simultaneous sourcing and sinking up to ±15mA while maintaining <30ppm/1000hr long-term stability.
It features dedicated NR and TRIM pins for wideband noise reduction (via 1µF capacitor) and ±1% output adjustment (±30mV at 5V), respectively-both functions operate independently of temperature drift and do not degrade initial accuracy or tempco.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±1mV (guaranteed over temperature and line/load) |
| Initial Accuracy | ±0.02% (±1mV at 5V), enabling direct use in 16-bit DAC/ADC calibration) |
| Tempco (TCVOUT) | 0.5ppm/°C typical, 1.0ppm/°C max - ensures ≤±5ppm drift across 0°C to +70°C |
| Output Noise | 3.0µVp-p (0.1Hz–10Hz), critical for sub-LSB noise floor in precision measurement |
| Load Regulation | ≤7ppm/mA - maintains stability with dynamic 0–15mA sourcing/sinking |
| Line Regulation | 10ppm/V (8V–36V input range), minimizing supply ripple impact on reference integrity |
| Long-Term Stability | 30ppm/1000hr - supports multi-year system calibration validity |
Pinout & Package
MAX6350CSA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard SOIC-8 footprint (5.0mm × 6.2mm, 1.27mm pitch). Pins 1, 7, and 8 are internally connected and must remain unconnected in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power-supply input | Accepts 8V–36V unregulated input; bypass capacitor recommended for ripple rejection |
| GND (Pin 4) | Reference ground | System ground return path; must be low-impedance and separate from noisy digital grounds |
| NR (Pin 3) | Noise reduction node | Connects to 1µF capacitor for wideband noise filtering; open-circuit if unused |
| OUT (Pin 6) | Voltage reference output | 5.000V precision output capable of ±15mA drive; stable with 0–100µF capacitive loads |
| TRIM (Pin 5) | External voltage trim input | Adjusts output ±30mV (±0.6%) via 10kΩ potentiometer; no effect on tempco or stability |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables ultra-low 3.0µVp-p (0.1Hz–10Hz) noise and 0.5ppm/°C tempco without heater power |
| Capacitive-load stability | Operates stably with 0–100µF output capacitance - eliminates need for isolation resistors in filter designs |
| Trim-adjustable output | ±30mV (±0.6%) fine-tuning via external potentiometer, preserving initial accuracy and tempco |
| High transient immunity | Settles to ±0.01% in 10µs after turn-on and rejects load transients with <500µV overshoot |
| Supply rejection | ≥60dB ripple rejection up to 10kHz (with CNR = 1µF), reducing sensitivity to noisy DC-DC outputs |
Applications
| High-Resolution ADC/DAC Systems | Precision Current Sources |
|---|---|
Use Scenario: 16-bit SAR ADC in automated test equipment requiring <±1 LSB error over temperature. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale conversion threshold. Use Value: 0.5ppm/°C tempco and 3.0µVp-p noise ensure <0.0015% total error contribution across 0°C–70°C. | Use Scenario: Programmable 4–20mA transmitter with 0.1% output accuracy over field temperature range. IC Role / Device Role / Timing Role: Stable 5V reference for DAC and op-amp feedback network. Use Value: ±15mA sourcing/sinking capability enables direct drive of current-loop amplifier without buffer stage. |
| Digital Voltmeters | Industrial Process Control Sensors |
Use Scenario: 6½-digit bench DVM requiring <10ppm absolute reference stability over 24-hour calibration cycle. IC Role / Device Role / Timing Role: Master reference for auto-zero and ratiometric scaling circuits. Use Value: 30ppm/1000hr long-term stability reduces recalibration frequency by >3× versus standard bandgap references. | Use Scenario: RTD or strain-gauge signal conditioning module in oil-and-gas PLC I/O card. IC Role / Device Role / Timing Role: Excitation and reference source for Wheatstone bridge and instrumentation amplifier. Use Value: Immunity to capacitive loading allows direct connection to shielded sensor cables without oscillation risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0V output, 3ppm/°C max tempco, 4.8µVp-p noise, SO-8, but requires ≥2.7V headroom (VIN ≥7.7V) | Higher noise and looser tempco limit use in 16-bit+ systems where MAX6350CSA+T's 0.5ppm/°C is required | Select REF5050IDR only when input voltage is constrained below 8V or cost is primary driver |
| ADR4550BRZ | 5.0V output, 1.5ppm/°C max tempco, 2.75µVp-p noise, SO-8, but no TRIM/NR pins and limited to ±10mA load | Lacks external trim and noise-reduction flexibility; unsuitable for systems needing field calibration or ultra-low-noise optimization | Choose ADR4550BRZ for fixed-output, space-constrained designs where trim/noise caps are omitted |
Compared with REF5050IDR and ADR4550BRZ, the MAX6350CSA+T uniquely combines 0.5ppm/°C typical tempco, 3.0µVp-p noise, ±15mA drive, and dual TRIM/NR functionality in SO-8 - making it the only option among the three qualified for metrology-grade 16-bit data acquisition with field-adjustable calibration.
Availability
MAX6350CSA+T is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, precision current sources, and digital voltmeters requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for MAX6350CSA+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX63xx family was designed specifically for metrology-grade voltage reference applications demanding laboratory-level stability, ultra-low noise, and robustness against line/load/temperature variation - targeting 16-bit+ data converters and precision instrumentation.
FAQ
What is the guaranteed initial accuracy of the MAX6350CSA+T?
The MAX6350CSA+T guarantees ±0.02% initial accuracy (±1mV at 5V) across the 0°C to +70°C operating temperature range, as specified in the Electrical Characteristics table of its official datasheet. This accuracy is measured at +25°C before any external trimming and remains valid even when the TRIM pin is left unconnected. The MAX6350CSA+T achieves this via laser-trimmed buried-zener core and precision thin-film resistors.
Does the MAX6350CSA+T require an external capacitor on the NR pin?
No, the NR pin on the MAX6350CSA+T is optional: a 1µF capacitor can be added to reduce wideband noise, but the device operates fully specified without it. When omitted, output noise rises to 3.0µVp-p (0.1Hz–10Hz); with the capacitor, it improves to 2.5µVp-p. The MAX6350CSA+T remains stable and functional with NR open, and no minimum capacitor value is mandated for basic operation.
Can the MAX6350CSA+T drive a 10µF output capacitor?
Yes, the MAX6350CSA+T is explicitly characterized and guaranteed stable with output capacitive loads from 0µF to 100µF across all load currents (0–15mA), per the "Bypassing" section of its datasheet. This eliminates the need for series isolation resistors or ferrite beads in applications requiring large bulk capacitance for transient suppression - a key advantage over many competing references that oscillate above 1µF.
What is the maximum input voltage the MAX6350CSA+T can tolerate?
The MAX6350CSA+T supports an input voltage range of 8V to 36V for normal operation, but its Absolute Maximum Rating for the IN pin is 40V. Sustained operation above 36V is not recommended, and exposure to 40V must be limited to transient conditions only. The device draws only ~2.5mA quiescent current, so power dissipation remains low even at 36V input, enabling use with unregulated industrial supplies.
Is the MAX6350CSA+T pin-compatible with other devices in the MAX63xx family?
Yes, the MAX6350CSA+T shares identical pinout, package (SO-8), and terminal functions with MAX6325CSA+T and MAX6341CSA+T - differing only in nominal output voltage (2.5V, 4.096V, and 5.0V respectively). All three support identical TRIM, NR, and load-drive capabilities, allowing drop-in replacement in layouts designed for the same SO-8 footprint and enabling common PCB design across voltage variants.
MAX6350CSA+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, Buried Zener
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 1ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3.3mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6350CSA+T FAQ
1.How can I place an order for MAX6350CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6350CSA+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 MAX6350CSA+T reliable?
The price and inventory of MAX6350CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6350CSA+T is usually 5 days.
3.What payment methods are accepted for MAX6350CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6350CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6350CSA+T?
MAX6350CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6350CSA+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 MAX6350CSA+T?
For technical support, including MAX6350CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6350CSA+T requirements.
6.How does Aetrix verify that MAX6350CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX6350CSA+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 MAX6350CSA+T meets industry standards.
7.What is the process for return or replacement of MAX6350CSA+T?
All MAX6350CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6350CSA+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 MAX6350CSA+T part is unused and in its original packaging.
Return procedure for MAX6350CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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