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Analog Devices Inc./Maxim Integrated MAX6198BESA+
- Part No.:
- MAX6198BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- -
- Datasheet:
-
MAX6198BESA+.pdf
- Description:
- IC VREF SERIES 4.096V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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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 supply current. It operates from (VOUT + 0.2V) to 12.6V input, supports ±500µA load current, and is used in high-accuracy ADC/DAC biasing, portable instrumentation, and industrial process control systems.
For engineers reviewing the MAX6198BESA+ datasheet, MAX6198BESA+ pinout, MAX6198BESA+ application, or MAX6198BESA+ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated SO-8 pin mapping, application-specific implementation insights, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The MAX6198BESA+ employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy over –40°C to +85°C. Its series-mode architecture enables sourcing and sinking up to 500µA while maintaining 100mV dropout at full load.
Internally compensated for stability with capacitive loads up to 2.2nF, it achieves 160µs turn-on settling time to 0.1% and delivers 77dB ripple rejection at 120Hz. Load regulation is specified at 0.15µV/µA and line regulation at 25µV/V, confirming high PSRR and minimal sensitivity to supply or load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±2mV - Enables precise 12-bit DAC/ADC full-scale calibration without trimming. |
| Temp Coefficient | ≤5ppm/°C - Ensures ≤±0.2mV drift across –40°C to +85°C ambient, critical for field-deployed sensors. |
| Quiescent Current | ≤35µA - Supports >10-year battery life in coin-cell-powered handheld meters. |
| Dropout Voltage | 100mV @ 500µA - Allows operation from 4.196V supply, compatible with single Li-ion or 5V rail derating. |
| Load Regulation | 0.15µV/µA - Maintains <75µV error across full ±500µA load swing, essential for ratiometric sensor interfaces. |
| Capacitive Stability | 0–2.2nF - Eliminates need for output capacitor in space-constrained PCB layouts. |
Pinout & Package
MAX6198BESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with exposed pad not electrically connected. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1, 3, 5, 7, and 8 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Reference voltage output - connects directly to ADC REF+ or op-amp non-inverting input; requires no series resistor. |
| 2 | IN | Supply input - accepts 4.296V to 12.6V; supplies internal bandgap core and output buffer. |
| 4 | GND | Analog ground reference - must be tied to clean system AGND plane to minimize noise coupling into VREF. |
| 3, 5, 7, 8 | N.C. | No internal connection - may be left floating or tied to GND for mechanical stability; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap | Reduces parabolic temperature drift, enabling <5ppm/°C TC without external compensation. |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy at +25°C and <75ppm hysteresis after thermal cycling. |
| Series-mode architecture | Draws only 35µA quiescent current regardless of load, unlike shunt references that waste current at no-load. |
| Internal compensation | Stable with 0–2.2nF output capacitance - avoids instability risks of external compensation networks. |
| Low-output-impedance buffer | Delivers ±500µA while holding load regulation to 0.15µV/µA, supporting direct drive of SAR ADC reference inputs. |
Applications
| Portable Data Acquisition | Precision Industrial ADC |
|---|---|
|
Use Scenario: Battery-powered handheld multimeter acquiring 16-bit voltage readings with auto-ranging. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope and sigma-delta ADC front-end, providing stable 4.096V full-scale reference. Use Value: 5ppm/°C TC and 35µA supply current enable accurate measurements across temperature and >5-year battery life. |
Use Scenario: 4–20mA loop-powered transmitter conditioning analog sensor signals before digitization. IC Role / Device Role / Timing Role: Precision reference for 24-bit ΣΔ ADC and programmable gain amplifier biasing. Use Value: ±2mV initial accuracy and 0.15µV/µA load regulation ensure <0.005% total unadjusted error over full sensor range. |
| Medical Sensor Interface | Automated Test Equipment |
|
Use Scenario: ECG front-end module requiring ultra-low-noise, stable reference for biopotential amplification. IC Role / Device Role / Timing Role: Low-noise 4.096V reference for instrumentation amplifier common-mode setting and ADC reference. Use Value: 100µVP-P (0.1–10Hz) noise and 77dB ripple rejection suppress power-supply–induced artifacts in sub-µV signals. |
Use Scenario: Modular PXI DAQ card performing simultaneous multi-channel voltage measurements at 1MS/s. IC Role / Device Role / Timing Role: Per-channel reference source ensuring channel-to-channel gain matching and offset stability. Use Value: 160µs turn-on settling and 2.2nF capacitive-load tolerance allow fast channel switching without reference stabilization delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440BRMZ | 4.096V output, ±1.5mV initial accuracy, 3ppm/°C TC, 37µA IQ, 125mV dropout @ 500µA | Higher accuracy and lower TC but higher dropout limits use below 4.22V supply; requires 1µF output cap for stability | Select ADR3440BRMZ when tighter initial accuracy and lower TC outweigh supply headroom constraints and board area for output capacitor. |
| REF5040AIDR | 4.096V output, ±0.5mV initial accuracy, 3ppm/°C TC, 950µA IQ, 220mV dropout @ 500µA | Superior accuracy and TC, but 27× higher quiescent current precludes battery operation; needs 10µF output cap | Select REF5040AIDR only in mains-powered systems where ultra-high precision justifies higher power and larger footprint. |
Compared with ADR3440BRMZ and REF5040AIDR, MAX6198BESA+ uniquely balances micropower operation (35µA), low dropout (100mV), and robust 5ppm/°C performance-making it optimal for space- and energy-constrained portable instrumentation where moderate accuracy suffices.
Availability
MAX6198BESA+ is available at Aetrix Electronics and suitable for portable data acquisition, precision industrial ADC, medical sensor interface, and automated 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, low-dropout, high-accuracy voltage referencing in battery-operated and space-constrained measurement systems.
FAQ
What is the maximum load current supported by MAX6198BESA+ while maintaining specified accuracy?
MAX6198BESA+ guarantees performance for sourcing and sinking currents up to ±500µA. Within this range, load regulation is specified at 0.15µV/µA, and output voltage remains within ±2mV of nominal 4.096V across temperature and line conditions. Exceeding ±500µA may cause increased dropout or deviation beyond datasheet limits.
Does MAX6198BESA+ require an output capacitor for stability?
No, MAX6198BESA+ is internally compensated and stable with output capacitance from 0 to 2.2nF. An external capacitor is optional and only recommended to improve transient response during large load or supply steps-not required for basic stability.
What is the minimum input voltage required for MAX6198BESA+ to maintain regulation at full load?
The minimum input voltage is VOUT + 0.2V = 4.296V under all conditions, and dropout is guaranteed at 100mV @ 500µA load. Therefore, to maintain regulation at full ±500µA, VIN must be ≥4.196V; however, the absolute minimum per datasheet is 4.296V to ensure specification compliance across temperature and process variation.
How does the temperature coefficient of MAX6198BESA+ compare to the MAX6198AESA+ and MAX6198CESA+ variants?
MAX6198BESA+ has a maximum temperature coefficient of 5ppm/°C, tighter than MAX6198CESA+ (10ppm/°C) but looser than MAX6198AESA+ (4ppm/°C). All three share identical 4.096V output and ±2mV, ±5mV, and ±10mV initial accuracy bins respectively - the 'B' grade offers best cost/performance balance for most industrial applications.
Can MAX6198BESA+ be used in automotive applications?
MAX6198BESA+ is rated for –40°C to +85°C and is not qualified to AEC-Q100. For automotive use, select MAX6198BESA/V+, which is the automotive-grade variant with extended testing and PPAP documentation - the '/V+' suffix denotes qualification per automotive reliability standards.
MAX6198BESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- -
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
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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