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Analog Devices Inc./Maxim Integrated MAX6198BESA
- Part No.:
- MAX6198BESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6198BESA.pdf
- Description:
- IC VREF SERIES 0.12% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,778
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Product details
Overview
MAX6198BESA from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 4.096V output with ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and 35µA max quiescent current-ideal for high-accuracy ADC/DAC biasing in battery-powered instrumentation.
For engineers reviewing the MAX6198BESA datasheet, MAX6198BESA pinout, MAX6198BESA application, or MAX6198BESA equivalent, this page provides verified specifications, SO-8 package details, load-regulation behavior at 500µA, dropout performance down to 100mV, and real-world alternatives for precision analog systems requiring stable 4.096V references.
Technical Context
The MAX6198BESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV (0.049%) initial accuracy over -40°C to +85°C. It operates as a series-mode reference capable of sourcing and sinking up to ±500µA while maintaining regulation.
Internally compensated for stability with capacitive loads up to 2.2nF, it achieves 160µs turn-on settling time to 0.1% and exhibits 0.15µV/µA load regulation and 25µV/V line regulation-enabling direct use in high-resolution data acquisition without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±2mV - tight tolerance enables 16-bit ADC full-scale reference without trimming |
| Temp Coefficient | ≤5ppm/°C - ensures <±0.2mV drift over industrial temperature range |
| Quiescent Current | ≤35µA - supports >10-year battery life in portable 3V/5V systems |
| Dropout Voltage | 100mV at 500µA - allows operation from 4.196V supply in low-voltage designs |
| Load Regulation | 0.15µV/µA - maintains <75µV error across full ±500µA load range |
| Line Regulation | 25µV/V - rejects supply ripple below 0.0006% per volt input change |
| Noise (0.1–10Hz) | 100µVP-P - suitable for 18-bit precision signal chains |
Pinout & Package
MAX6198BESA is housed in an 8-pin SO (Small Outline) package with RoHS-compliant lead finish. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1, 3, 5, 7, and 8 are No Connect (N.C.) and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | N.C. | No internal connection - floating; no routing or grounding required |
| 2 | IN | Supply input - accepts 4.296V to 12.6V; supplies internal bandgap core |
| 4 | GND | Analog ground reference - must tie to clean system ground plane |
| 6 | OUT | Precision 4.096V reference output - drives ADC REF+, DAC VREF, or op-amp bias networks |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap | Enables ≤5ppm/°C TC without external compensation or calibration |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy without post-package trimming |
| Capacitive-load stability | Stable with 0–2.2nF output capacitance - eliminates mandatory bypass cap |
| Source/sink capability | ±500µA drive strength supports direct interface to SAR ADC reference inputs |
| Low-noise architecture | 100µVP-P (0.1–10Hz) enables sub-LSB error in 18-bit converters |
Applications
| Portable Data Loggers | Industrial 4–20mA Transmitters |
|---|---|
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and pressure with 16-bit ADC sampling every 10 seconds. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC conversion, ensuring consistent full-scale definition across temperature and battery discharge. Use Value: 35µA quiescent current extends coin-cell life beyond 5 years; 100mV dropout allows operation down to 4.196V supply during deep discharge. |
Use Scenario: Loop-powered field transmitter converting RTD or thermocouple signals to 4–20mA output using precision DAC and current-sense amplifier. IC Role / Device Role / Timing Role: Supplies accurate 4.096V reference to DAC and signal-conditioning op-amps in isolated analog front-end. Use Value: ±2mV initial accuracy and 5ppm/°C TC ensure <0.1% total error over -40°C to +85°C ambient, meeting SIL-2 functional safety requirements. |
| Medical Patient Monitoring | Test & Measurement Equipment |
Use Scenario: Portable ECG device digitizing biopotential signals with 24-bit delta-sigma ADC and programmable gain amplifier. IC Role / Device Role / Timing Role: Serves as master reference for both ADC and PGA gain-setting DAC, eliminating ratio-metric errors. Use Value: 0.15µV/µA load regulation prevents reference shift during dynamic PGA gain changes; 2.2nF capacitive-load tolerance simplifies layout near noisy digital sections. |
Use Scenario: Benchtop multimeter performing 6½-digit DC voltage measurements with auto-ranging and offset compensation. IC Role / Device Role / Timing Role: Primary reference for internal 24-bit ADC and calibration DACs used in self-test and zero-adjust routines. Use Value: 75ppm long-term stability (1000hrs) and 75ppm temperature hysteresis ensure calibration validity between annual service intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max TC, 50µA IQ, SO-8 - lower TC but higher supply current | Better TC for metrology-grade instruments; less suitable for ultra-low-power battery apps | Choose when TC <3ppm/°C is mandatory and supply current >35µA is acceptable |
| ADR444BRZ | 4.096V, 3ppm/°C max TC, 750µA IQ, SO-8 - superior TC and noise, but 21× higher IQ | Used in lab-grade equipment where power is not constrained and 0.25µVP-P noise is critical | Choose only for mains-powered test gear requiring lowest possible noise and TC |
Compared with REF5040IDR and ADR444BRZ, MAX6198BESA delivers the optimal balance of ultra-low quiescent current (35µA), industrial-grade TC (5ppm/°C), and SO-8 compatibility-making it the preferred choice for portable, battery-operated precision analog systems where power and size are co-constrained.
Availability
MAX6198BESA is available at Aetrix Electronics and suitable for portable instrumentation, industrial transmitters, medical monitoring devices, and test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6198BESA 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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-accuracy voltage referencing in space- and energy-constrained systems-emphasizing low dropout, minimal load sensitivity, and exceptional thermal stability.
FAQ
What is the maximum load current supported by MAX6198BESA while maintaining regulation?
MAX6198BESA guarantees regulation for sourcing and sinking currents up to ±500µA. At 500µA load, dropout voltage remains ≤100mV, and load regulation is specified at 0.15µV/µA - meaning output deviation stays within ±75µV across the full load range. This makes MAX6198BESA suitable for driving ADC reference inputs, DAC VREF pins, and op-amp bias networks without external buffers.
Does MAX6198BESA require an output capacitor for stability?
No, MAX6198BESA is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. Unlike many references, it does not require a minimum output capacitor for phase margin. An external capacitor may be added to improve transient response to step load changes, but it is optional - enabling compact layouts in space-constrained portable designs where board area is at a premium.
What is the supply voltage range for MAX6198BESA?
MAX6198BESA operates with a supply voltage from (VOUT + 0.2V) = 4.296V up to 12.6V. The minimum input ensures sufficient headroom for the 100mV dropout at full 500µA load. Supply current remains highly stable across this range - varying by only 0.8µA/V - making MAX6198BESA robust against rail fluctuations in battery-powered or poorly regulated systems.
How does the temperature hysteresis specification affect long-term measurement accuracy of MAX6198BESA?
MAX6198BESA exhibits ≤75ppm temperature hysteresis - defined as the output voltage shift at +25°C before and after cycling from -40°C to +85°C. For a 4.096V reference, this equals ≤0.31mV hysteresis error. In applications like automated test equipment or field instruments that undergo repeated thermal cycles, this spec ensures repeatable calibration points without recalibration between temperature excursions.
Is MAX6198BESA pin-compatible with other members of the MAX6190–MAX6195/MAX6198 family?
Yes, all variants in the MAX6190–MAX6195/MAX6198 family-including MAX6198BESA-share identical 8-pin SO package pinout and footprint. Pins 1, 3, 5, 7, 8 are N.C.; Pin 2 is IN; Pin 4 is GND; Pin 6 is OUT. This allows drop-in replacement across output voltages (1.25V to 5.0V) and accuracy grades (A/B/C), simplifying design reuse and inventory consolidation.
MAX6198BESA 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:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.12%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 100µVp-p
- Noise - 10Hz to 10kHz:
- 200µVrms
- Voltage - Input:
- 4.296V ~ 12.6V
- Current - Supply:
- 35µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6198BESA FAQ
1.How can I place an order for MAX6198BESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6198BESA 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 MAX6198BESA reliable?
The price and inventory of MAX6198BESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6198BESA is usually 5 days.
3.What payment methods are accepted for MAX6198BESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6198BESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6198BESA?
MAX6198BESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6198BESA 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 MAX6198BESA?
For technical support, including MAX6198BESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6198BESA requirements.
6.How does Aetrix verify that MAX6198BESA is sourced from the original manufacturer or authorized distributors?
All MAX6198BESA 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 MAX6198BESA meets industry standards.
7.What is the process for return or replacement of MAX6198BESA?
All MAX6198BESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6198BESA, 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 MAX6198BESA part is unused and in its original packaging.
Return procedure for MAX6198BESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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