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Analog Devices Inc./Maxim Integrated MAX6198AESA+
- Part No.:
- MAX6198AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6198AESA+.pdf
- Description:
- IC VREF SERIES 0.05% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,459
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Product details
Overview
MAX6198AESA+ 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 - optimized for high-accuracy ADC/DAC biasing in battery-powered instrumentation and industrial process control.
For engineers reviewing the MAX6198AESA+ datasheet, MAX6198AESA+ pinout, MAX6198AESA+ application, or MAX6198AESA+ equivalent, key selection criteria include guaranteed load regulation (0.15µV/µA), dropout voltage (100mV at 500µA), capacitive-load stability up to 2.2nF, and operation across –40°C to +85°C without external compensation.
Technical Context
The MAX6198AESA+ 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. It operates as a series-mode reference, sourcing or sinking up to ±500µA while maintaining regulation.
Internally compensated and stable with 0–2.2nF output capacitance, it achieves 160µs turn-on settling time to 0.1% and provides 77dB ripple rejection at 120Hz. Its supply current varies only 0.8–2µA/V across input voltage, ensuring consistent efficiency in varying supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±2mV (±0.049% tolerance) - enables precise 12-bit ADC full-scale calibration without trimming. |
| Temp Coefficient | ≤5ppm/°C - ensures ≤208µV drift over –40°C to +85°C ambient, critical for unheated field instruments. |
| Quiescent Current | ≤35µA - supports >10-year battery life in 10µA-average-power handheld meters. |
| Dropout Voltage | 100mV at 500µA load - allows operation from 4.196V supply, compatible with single Li-ion or 5V rail derating. |
| Load Regulation | 0.15µV/µA - guarantees <75µV output shift across full ±500µA load range, essential for ratiometric sensor interfaces. |
| Line Regulation | 25µV/V - limits output variation to <250µV over 4.2V–12.6V input, simplifying upstream LDO selection. |
| Noise (0.1–10Hz) | 100µVP-P - minimizes quantization uncertainty in high-resolution delta-sigma converters. |
| Capacitive Load | Stable with 0–2.2nF - eliminates need for output capacitor in space-constrained PCB layouts. |
Pinout & Package
MAX6198AESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead(Pb)-free, with exposed pad not internally connected. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1,3,5,7,8 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | N.C. | No internal connection - must be left floating or tied to GND per layout best practice; no electrical function. |
| 2 | IN | Supply input terminal - accepts 4.296V to 12.6V; requires local 0.1µF bypass capacitor near pin. |
| 4 | GND | Analog ground reference - must connect to clean system ground plane with low-inductance path. |
| 6 | OUT | Precision 4.096V reference output - drives ADC REF+, DAC VREF, or op-amp bias networks directly. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±2mV initial accuracy and <5ppm/°C tempco without external calibration. |
| Curvature-correction circuit | Compensates second-order thermal effects, reducing output drift nonlinearity across temperature. |
| Series-mode architecture | Sources/sinks ±500µA while drawing only 35µA quiescent current - maximizes battery runtime vs. shunt references. |
| Internal compensation | Eliminates need for external compensation components; stable with 0–2.2nF capacitive loads. |
| Low-output-impedance design | Delivers <1Ω output impedance at DC, minimizing interaction with dynamic loads in multiplexed systems. |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Portable multimeter requiring 4½-digit accuracy and 10-year battery life. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope ADC and LCD bias generation. Use Value: 35µA quiescent current and 4.096V output enable direct interface to 12-bit ADCs without gain scaling. |
Use Scenario: Precision data acquisition module measuring thermocouple and RTD signals. IC Role / Device Role / Timing Role: Ratiometric reference for sigma-delta ADC front-end, rejecting supply ripple. Use Value: 77dB PSRR and 0.15µV/µA load regulation ensure <0.001% measurement error under varying sensor excitation currents. |
| Industrial Process Control | Precision 3V/5V Systems |
Use Scenario: 4–20mA loop-powered transmitter operating in harsh factory environments. IC Role / Device Role / Timing Role: Stable excitation reference for bridge sensors and isolation amplifier biasing. Use Value: ≤5ppm/°C tempco and 75ppm hysteresis guarantee repeatability across thermal cycling in uncontrolled enclosures. |
Use Scenario: Low-power microcontroller system using 3.3V I/O with integrated 12-bit SAR ADC. IC Role / Device Role / Timing Role: External VREF for MCU ADC, decoupled from noisy digital supply rails. Use Value: 100mV dropout allows operation from 3.3V LDO with margin, while 2.2nF capacitive-load tolerance avoids extra BOM cost. |
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, 10ppm/°C max tempco, 120µA quiescent current | Higher power consumption limits use in multi-year battery devices; better noise performance (5.5µVRMS) | Select when lower broadband noise outweighs battery-life requirements. |
| REF5040AIDR | 4.096V output, ±0.5mV initial accuracy, 3ppm/°C max tempco, 950µA quiescent current | Requires heatsinking above 1mA load; superior long-term stability (15ppm/1000hrs vs. 50ppm) | Select for lab-grade equipment where ultra-low drift justifies higher supply current. |
Compared with ADR3440BRMZ and REF5040AIDR, MAX6198AESA+ uniquely balances sub-35µA quiescent current, 5ppm/°C tempco, and 100mV dropout - making it optimal for portable, wide-temperature, and space-constrained designs where power and board area are primary constraints.
Availability
MAX6198AESA+ is available at Aetrix Electronics and suitable for hand-held instruments, analog-to-digital converters, and industrial process control systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6198AESA+ 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 battery-operated test equipment and sensor signal chains where low dropout and minimal thermal drift are mandatory.
FAQ
What is the maximum load current supported by the MAX6198AESA+ while maintaining regulation?
The MAX6198AESA+ sources and sinks up to ±500µA while guaranteeing output voltage regulation within specifications. At 500µA load, dropout voltage remains ≤100mV, and load regulation is specified at 0.15µV/µA - meaning total output shift stays below 75µV across the full load range. This capability supports direct driving of ADC reference inputs and op-amp bias networks without buffering.
Does the MAX6198AESA+ require an external output capacitor for stability?
No, the MAX6198AESA+ is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. An external capacitor is optional and only recommended in applications subject to fast load or supply transients - where it reduces overshoot/undershoot and improves transient response. For space-constrained designs like handheld meters, omitting the capacitor is fully supported and validated.
What is the operating temperature range for the MAX6198AESA+?
The MAX6198AESA+ is rated for continuous operation from –40°C to +85°C. All key specifications - including initial accuracy (±2mV), temperature coefficient (≤5ppm/°C), and load regulation (0.15µV/µA) - are guaranteed across this full industrial temperature range. The device also exhibits only 75ppm temperature hysteresis, ensuring repeatable performance after thermal cycling.
How does the MAX6198AESA+ compare to shunt voltage references in terms of power efficiency?
Unlike shunt references that draw constant current regardless of load, the MAX6198AESA+ draws only 35µA quiescent current and supplies load current on-demand. Its supply current varies just 0.8–2µA/V with input voltage, eliminating wasted bias current. In battery-powered systems, this architecture extends runtime significantly - especially under light or intermittent load conditions typical in portable instrumentation.
Can the MAX6198AESA+ be used with a 3.3V supply rail?
No - the MAX6198AESA+ requires a minimum input voltage of (VOUT + 0.2V) = 4.296V to maintain regulation. With a 4.096V output, it cannot operate from a standard 3.3V rail. It is designed for 4.3V–12.6V supplies, such as those derived from single-cell Li-ion (fully charged ~4.2V, nominal 3.7V - insufficient), dual-cell alkaline, or regulated 5V/12V systems. A 3.3V-compatible alternative would require a different reference family.
MAX6198AESA+ 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 5ppm/°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
MAX6198AESA+ FAQ
1.How can I place an order for MAX6198AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6198AESA+ 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 MAX6198AESA+ reliable?
The price and inventory of MAX6198AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6198AESA+ is usually 5 days.
3.What payment methods are accepted for MAX6198AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6198AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6198AESA+?
MAX6198AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6198AESA+ 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 MAX6198AESA+?
For technical support, including MAX6198AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6198AESA+ requirements.
6.How does Aetrix verify that MAX6198AESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6198AESA+ 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 MAX6198AESA+ meets industry standards.
7.What is the process for return or replacement of MAX6198AESA+?
All MAX6198AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6198AESA+, 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 MAX6198AESA+ part is unused and in its original packaging.
Return procedure for MAX6198AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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