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Analog Devices Inc./Maxim Integrated MAX6198CESA+T
- Part No.:
- MAX6198CESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6198CESA+T.pdf
- Description:
- IC VREF SERIES 0.24% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,511
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Product details
Overview
MAX6198CESA+T 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 MAX6198CESA+T datasheet, MAX6198CESA+T pinout, MAX6198CESA+T application, or MAX6198CESA+T equivalent, this page provides verified electrical parameters, SO-8 package layout, load-regulation behavior under ±500µA sourcing/sinking, and validated alternatives for precision 4.096V reference designs.
Technical Context
The MAX6198CESA+T employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV (0.049%) initial accuracy at 4.096V. It operates as a series-mode reference, enabling bidirectional current drive (±500µA) with only 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 exhibits 0.15µV/µA load regulation and 25µV/V line regulation - critical for high-resolution data acquisition systems requiring minimal drift across supply and load variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±2mV (guaranteed 0.049% initial tolerance at +25°C) |
| Temp Coefficient | ≤5ppm/°C (max drift of ±0.205mV over -40°C to +85°C) |
| Quiescent Current | ≤35µA (enables >1-year battery life in 10µA-systems) |
| Dropout Voltage | 100mV at 500µA load (supports operation down to VIN = 4.196V) |
| Load Regulation | 0.15µV/µA (ΔVOUT ≤75µV over full ±500µA load range) |
| Line Regulation | 25µV/V (ΔVOUT ≤250µV over VIN = 4.296V to 12.6V) |
| Noise (0.1–10Hz) | 100µVP-P (low-frequency noise critical for 20-bit+ ADC references) |
Pinout & Package
MAX6198CESA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with exposed pad not electrically connected. Pins 1, 3, 5, 7, and 8 are No Connect (N.C.), internally unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 2 | IN | Supply input; accepts 4.296V to 12.6V; must deliver up to 700µA during turn-on transients |
| 4 | GND | Analog ground reference; requires low-impedance connection to minimize noise coupling |
| 6 | OUT | Precision 4.096V reference output; capable of sourcing or sinking up to ±500µA |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enable ±2mV initial accuracy and <5ppm/°C tempco without external calibration |
| Curvature-correction circuit | Compensates second-order thermal effects, reducing box-method TCVOUT error |
| Capacitive-load stability (0–2.2nF) | Eliminates need for output capacitor in space-constrained PCB layouts |
| Bidirectional load capability (±500µA) | Supports both sourcing (e.g., ADC reference input) and sinking (e.g., DAC feedback) topologies |
| Low 0.15µV/µA load regulation | Ensures <75µV output shift across full load range - essential for ratiometric sensor interfaces |
Applications
| Hand-Held Instrumentation | Analog-to-Digital Converters |
|---|---|
Use Scenario: Portable multimeter with 24-bit sigma-delta ADC requiring stable reference under varying battery voltage (3.0–4.2V). IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion core, directly setting full-scale input range. Use Value: 100mV dropout enables operation down to 4.196V input, extending usable battery life by avoiding premature shutdown. |
Use Scenario: Precision weigh scale using 20-bit ADC with internal PGA and external sensor bridge. IC Role / Device Role / Timing Role: Ratiometric reference for bridge excitation and ADC reference, rejecting supply ripple. Use Value: 25µV/V line regulation and 86dB ripple rejection suppress measurement errors from noisy DC-DC converters. |
| Industrial Process Control | Precision 4.096V Systems |
Use Scenario: 4–20mA transmitter with HART modulation, operating in harsh 40–85°C ambient. IC Role / Device Role / Timing Role: Stable reference for DAC generating analog output and for internal diagnostics. Use Value: 5ppm/°C tempco limits reference drift to ±0.35mV over full temperature range, meeting SIL-2 accuracy requirements. |
Use Scenario: FPGA-based data logger using 4.096V as native reference for 12-bit on-chip ADC and external SPI DAC. IC Role / Device Role / Timing Role: Exact 4.096V (212 × 1mV) reference enabling integer-mV resolution without scaling. Use Value: ±2mV initial accuracy ensures absolute measurement error remains within ±1 LSB across entire 0–4.096V range. |
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 output, ±0.5mV initial accuracy, 3ppm/°C max tempco, 950µA quiescent current | Higher power consumption; suited for mains-powered systems where ultra-low IQ is not required | Select REF5040IDR when tighter initial accuracy and lower tempco outweigh battery-life constraints |
| ADR444BRZ | 4.096V output, ±1.5mV initial accuracy, 3ppm/°C max tempco, 750µA quiescent current, higher PSRR (110dB) | Requires larger PCB area and heatsinking; better for high-noise industrial environments | Choose ADR444BRZ when superior power-supply ripple rejection is prioritized over micropower operation |
Compared with REF5040IDR and ADR444BRZ, MAX6198CESA+T delivers the lowest quiescent current (35µA vs. >750µA) and smallest footprint (SO-8), making it uniquely suitable for compact, long-life portable instruments - though with slightly relaxed initial accuracy and tempco versus the alternatives.
Availability
MAX6198CESA+T is available at Aetrix Electronics and suitable for hand-held instrumentation, precision ADC/DAC biasing, and industrial process control systems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6198CESA+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) designs precision analog and mixed-signal ICs for demanding performance applications, with expertise in low-power, high-accuracy voltage references and sensor signal chains.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-stability voltage referencing in portable and battery-operated measurement systems - emphasizing ultra-low IQ, low dropout, and exceptional temperature stability.
FAQ
What is the maximum load current the MAX6198CESA+T can source or sink?
The MAX6198CESA+T is specified to source and sink up to ±500µA while maintaining output accuracy within datasheet limits. At 500µA load, dropout voltage is guaranteed ≤100mV, and load regulation is characterized at 0.15µV/µA - meaning total output shift remains ≤75µV across the full bidirectional range. This capability supports both active pull-up and pull-down reference configurations in precision data converters.
Does the MAX6198CESA+T require an output capacitor for stability?
No, the MAX6198CESA+T is internally compensated and stable with capacitive loads 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. Its capacitor-free stability saves board space and simplifies design in compact portable instruments.
What is the minimum input voltage required for the MAX6198CESA+T to regulate at 4.096V?
The minimum input voltage for the MAX6198CESA+T is VOUT + 0.2V = 4.296V under typical conditions, but the guaranteed dropout specification is 100mV at 500µA load - meaning it maintains regulation down to VIN = 4.196V at that load. The absolute minimum supply voltage is 4.296V per the supply voltage range spec, and operation below this risks loss of regulation or increased noise.
How does the MAX6198CESA+T achieve its 5ppm/°C temperature coefficient?
The MAX6198CESA+T achieves ≤5ppm/°C temperature coefficient through a proprietary curvature-correction circuit combined with laser-trimmed precision thin-film resistors. This dual approach compensates first- and second-order thermal effects in the bandgap core, reducing the "bowing" of VOUT vs. temperature - confirmed by the box-method measurement cited in the datasheet and validated across -40°C to +85°C.
Is the MAX6198CESA+T pin-compatible with other devices in the MAX6190–MAX6195/MAX6198 family?
Yes, all members of the MAX6190–MAX6195/MAX6198 family, including MAX6198CESA+T, use identical 8-pin SO packaging and share the same pinout: Pin 2 = IN, Pin 4 = GND, Pin 6 = OUT, and Pins 1/3/5/7/8 = N.C. This allows direct substitution between variants (e.g., MAX6198AESA+, MAX6198BESA+) without PCB changes - provided the output voltage and accuracy grade meet system requirements.
MAX6198CESA+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
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.24%
- Temperature Coefficient:
- 25ppm/°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
MAX6198CESA+T FAQ
1.How can I place an order for MAX6198CESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6198CESA+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 MAX6198CESA+T reliable?
The price and inventory of MAX6198CESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6198CESA+T is usually 5 days.
3.What payment methods are accepted for MAX6198CESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6198CESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6198CESA+T?
MAX6198CESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6198CESA+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 MAX6198CESA+T?
For technical support, including MAX6198CESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6198CESA+T requirements.
6.How does Aetrix verify that MAX6198CESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6198CESA+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 MAX6198CESA+T meets industry standards.
7.What is the process for return or replacement of MAX6198CESA+T?
All MAX6198CESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6198CESA+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 MAX6198CESA+T part is unused and in its original packaging.
Return procedure for MAX6198CESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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