My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6225BCSA+T
- Part No.:
- MAX6225BCSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6225BCSA+T.pdf
- Description:
- IC VREF SERIES 0.12% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,325
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6225BCSA+T from Maxim Integrated is a precision 2.500V buried-zener voltage reference IC with 5.0ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 1.5µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in metrology-grade instrumentation and ATE systems.
For engineers reviewing the MAX6225BCSA+T datasheet, MAX6225BCSA+T pinout, MAX6225BCSA+T application, or MAX6225BCSA+T equivalent, key selection criteria include guaranteed ±15mA sink/source capability, 8-pin SO package compatibility, low 18mW power consumption at 10V input, and optional external trim/noise reduction functionality.
Technical Context
This device uses buried-zener topology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its low 20ppm/1000h long-term drift and ±25mV trim range support recalibration-critical applications like digital voltmeters and precision current sources.
The reference maintains stable regulation across 8V–36V input and delivers <10ppm/mA load regulation (sourcing) and <7ppm/mA (sinking) over –40°C to +85°C. Its 5µs turn-on settling time and stable response to capacitive loads up to 100µF enable fast-switching data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.003V at +25°C - tight tolerance enables 16-bit DAC/ADC full-scale accuracy without calibration. |
| Tempco (Max) | 5.0ppm/°C - ensures ≤±125ppm (±0.313mV) drift over 0°C to +70°C operating range. |
| Noise (0.1–10Hz) | 1.5µVP-P - sub-microvolt low-frequency noise critical for DC-precision measurement front-ends. |
| Initial Accuracy | ±0.02% - translates to ±0.5mV absolute error at 2.5V, supporting high-accuracy reference standard use. |
| Load Current | ±15mA sourcing/sinking - drives heavy loads (e.g., op-amp buffers, multiple ADC references) without regulation loss. |
| Power Dissipation | 471mW max at +70°C (8-pin SO) - supports continuous operation in industrial ambient without derating concerns. |
| Long-Term Stability | 20ppm/1000h - predictable aging behavior essential for unattended test equipment and calibration labs. |
Pinout & Package
MAX6225BCSA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012 footprint (S8+5 outline).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No external connection required; internal bond wires only - must remain unconnected on PCB. |
| 2 | IN | Positive supply input (8V–36V); requires local 2.2µF bypass capacitor for ripple rejection. |
| 3 | NR | Noise reduction node; accepts 1µF capacitor to reduce wideband output noise by >20dB. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage adjust input; ±25mV trim range via 10kΩ potentiometer enables system-level calibration. |
| 6 | OUT | Stable 2.500V reference output; capable of driving capacitive loads up to 100µF without oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables 1.5µVP-P ultra-low noise and 20ppm/1000h stability - superior to bandgap alternatives for metrology. |
| Optional NR capacitor | 1µF on NR pin reduces broadband noise without affecting DC accuracy or thermal drift performance. |
| Industry-standard pinout | Pin-compatible with legacy 2.5V references (e.g., REF02, LT1021), simplifying drop-in upgrades in existing designs. |
| Full capacitive load stability | Operates reliably with 0–100µF output capacitance - eliminates need for isolation resistors in buffered reference paths. |
| Trim-adjustable output | ±25mV adjustment range allows field calibration to compensate for PCB trace resistance and layout tolerances. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter Reference |
|---|---|
|
Use Scenario: 16-bit SAR ADC sampling sensor signals in automated test equipment with <1LSB INL requirement. IC Role / Device Role / Timing Role: Primary voltage reference establishing ADC full-scale range and offset null point. Use Value: 5.0ppm/°C tempco and 1.5µVP-P noise ensure <0.002% measurement uncertainty over temperature and time. |
Use Scenario: Benchtop DVM requiring 7½-digit resolution and annual recalibration traceability. IC Role / Device Role / Timing Role: Stable 2.500V reference for ratiometric scaling of integrator and comparator thresholds. Use Value: 20ppm/1000h long-term stability minimizes calibration frequency and supports ISO/IEC 17025 compliance. |
| Precision Current Source | Industrial Process Controller |
|
Use Scenario: 4–20mA transmitter with HART modulation where loop current accuracy must hold ±0.1% over –40°C to +85°C. IC Role / Device Role / Timing Role: Reference for current-setting DAC and feedback amplifier in two-wire loop design. Use Value: ±15mA sink capability directly drives op-amp inputs; ±0.02% initial accuracy sets baseline loop accuracy. |
Use Scenario: PLC analog I/O module converting field sensor inputs (RTD, thermocouple) to digital control outputs. IC Role / Device Role / Timing Role: Precision excitation source for RTD bridges and reference for sigma-delta ADC front-end. Use Value: Low 18mW power dissipation prevents self-heating errors in densely packed I/O chassis environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | 2.5V, 3ppm/°C max, 1.2µVP-P, 3.6–18V input, SO-8 - lower noise but higher supply voltage minimum. | Requires ≥3.6V input; unsuitable for 5V-only systems with headroom constraints. | Select when ultra-low noise (<1.2µVP-P) outweighs input voltage flexibility. |
| ADR441BRZ | 2.5V, 3ppm/°C max, 1.75µVP-P, 7–18V input, SO-8 - better tempco but higher quiescent current (4.5mA vs. 2.7mA). | Higher power draw limits use in battery-powered portable calibrators. | Select when tighter tempco (3ppm/°C) is prioritized over power efficiency in mains-powered systems. |
Compared with REF5025IDR and ADR441BRZ, MAX6225BCSA+T offers optimal balance of low-noise performance, wide 8–36V input range, and minimal 2.7mA supply current - making it uniquely suited for industrial ATE and high-channel-count DAQ systems where supply headroom and thermal management are constrained.
Availability
MAX6225BCSA+T is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and precision current sources requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6225BCSA+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, communications, and computing markets.
The MAX6225 series belongs to Maxim's precision voltage reference product line, engineered specifically for metrology-grade instrumentation, automated test equipment, and high-accuracy process control systems demanding lab-level stability.
FAQ
What is the maximum input voltage rating for MAX6225BCSA+T?
The absolute maximum input voltage for MAX6225BCSA+T is +40V, but the recommended operating range is 8V to 36V. Operation above 36V risks exceeding safe power dissipation limits in the 8-pin SO package, especially at elevated ambient temperatures. For reliable long-term performance, maintain VIN ≤ 36V with adequate PCB copper pour for thermal conduction.
Can MAX6225BCSA+T drive a 100µF output capacitor without instability?
Yes, MAX6225BCSA+T is explicitly characterized and guaranteed stable with output capacitance from 0µF to 100µF across all load currents and temperatures. This eliminates the need for series isolation resistors in buffer amplifier configurations and supports low-impedance reference distribution in multi-channel data acquisition systems.
What is the purpose of the NR pin on MAX6225BCSA+T?
The NR (Noise Reduction) pin on MAX6225BCSA+T accepts an external 1µF capacitor to shunt high-frequency noise from the internal zener core, reducing broadband output noise by up to 25dB. Leaving NR open retains full 1.5µVP-P (0.1–10Hz) low-frequency performance while minimizing component count in noise-tolerant applications.
How does the TRIM pin function on MAX6225BCSA+T?
The TRIM pin on MAX6225BCSA+T allows ±25mV (±1%) output adjustment using a 10kΩ potentiometer between OUT and GND, with the wiper connected to TRIM. This external trimming does not degrade temperature coefficient or long-term stability, enabling system-level calibration after PCB assembly and thermal cycling.
Is MAX6225BCSA+T compatible with lead-free reflow soldering processes?
Yes, MAX6225BCSA+T carries the "+" suffix indicating RoHS-compliant, lead-free packaging. It is qualified for standard Pb-free reflow profiles with peak temperature up to +260°C (per JEDEC J-STD-020), matching the thermal requirements of modern SMT assembly lines without risk of delamination or parametric shift.
MAX6225BCSA+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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.12%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.5µVp-p
- Noise - 10Hz to 10kHz:
- 1.3µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6225BCSA+T FAQ
1.How can I place an order for MAX6225BCSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6225BCSA+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 MAX6225BCSA+T reliable?
The price and inventory of MAX6225BCSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6225BCSA+T is usually 5 days.
3.What payment methods are accepted for MAX6225BCSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6225BCSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6225BCSA+T?
MAX6225BCSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6225BCSA+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 MAX6225BCSA+T?
For technical support, including MAX6225BCSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6225BCSA+T requirements.
6.How does Aetrix verify that MAX6225BCSA+T is sourced from the original manufacturer or authorized distributors?
All MAX6225BCSA+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 MAX6225BCSA+T meets industry standards.
7.What is the process for return or replacement of MAX6225BCSA+T?
All MAX6225BCSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6225BCSA+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 MAX6225BCSA+T part is unused and in its original packaging.
Return procedure for MAX6225BCSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6225BCSA+T 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…
