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Analog Devices Inc./Maxim Integrated MAX6193BESA+T
- Part No.:
- MAX6193BESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6193BESA+T.pdf
- Description:
- IC VREF SERIES 0.17% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,088
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Product details
Overview
MAX6193BESA+T from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering a stable 3.000V output with ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and only 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 requiring long-term stability and low power.
For engineers reviewing the MAX6193BESA+T datasheet, MAX6193BESA+T pinout, MAX6193BESA+T application, or MAX6193BESA+T equivalent, this page provides verified technical context, real-world design meaning for key specs, validated SO-8 pin configuration, application-specific implementation guidance, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The MAX6193BESA+T uses 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 bidirectional load current (±500µA) with only 100mV dropout at 500µA sink/source.
Internally compensated for stability with capacitive loads up to 2.2nF, it delivers fast 100µs turn-on settling time to 0.1% and exhibits 0.14µV/µA load regulation and 20µV/V line regulation - critical for precision data acquisition in battery-powered and low-noise systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±2mV (guaranteed initial tolerance enables direct replacement of 3V references without calibration) |
| Temp Coefficient | ≤5ppm/°C (max drift of ±0.45mV over full –40°C to +85°C range supports uncalibrated industrial sensors) |
| Quiescent Current | ≤35µA (enables >10-year battery life in 10µA-sleep IoT nodes with wake-up reference biasing) |
| Dropout Voltage | 100mV at 500µA load (allows operation from 3.1V supply in 3.3V systems with tight headroom) |
| Load Regulation | 0.14µV/µA (output shift <70µV across full ±500µA load range preserves 16-bit ADC LSB integrity) |
| Line Regulation | 20µV/V (output change <200µV over 3.2V–12.6V input range simplifies LDO selection) |
| Noise (0.1–10Hz) | 150µVP-P (low flicker noise avoids degradation in high-resolution weigh-scale front-ends) |
Pinout & Package
MAX6193BESA+T 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 1,3,5,7,8 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 routing required |
| 2 | IN | Supply input (VOUT + 0.2V to 12.6V); requires local 100nF ceramic decoupling near pin |
| 4 | GND | Analog ground reference; must connect to clean system AGND plane with low-inductance path |
| 6 | OUT | Stable 3.000V reference output; capable of sourcing/sinking ±500µA with <100mV dropout |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap core | Enables ≤5ppm/°C TC without external compensation - eliminates trimming overhead in production test |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy at +25°C - reduces need for post-assembly calibration in medical devices |
| Capacitive-load stability (0–2.2nF) | Allows direct drive of SAR ADC sample capacitors without isolation resistor - saves board space and cost |
| ±500µA bidirectional load capability | Supports active filtering and buffered reference topologies without external op-amp - simplifies analog front-end design |
| Internal compensation | Eliminates need for external compensation network - ensures stability across all qualified loads and PCB parasitics |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Battery-powered multimeter measuring DC voltage with 0.1% accuracy over 0–50°C ambient. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit sigma-delta ADC, providing stable 3.000V scale reference. Use Value: ±2mV initial error and ≤5ppm/°C drift ensure measurement stays within spec without field recalibration. |
Use Scenario: Precision data logger sampling thermocouple signals via 24-bit ADC in industrial PLC module. IC Role / Device Role / Timing Role: Reference source for ADC's internal PGA and conversion core, rejecting supply ripple. Use Value: 80dB PSRR at 120Hz and 20µV/V line regulation suppress power rail noise from shared 3.3V SMPS. |
| Industrial Process Control | Precision 3V Systems |
Use Scenario: 4–20mA transmitter with HART modulation operating in harsh factory environments. IC Role / Device Role / Timing Role: Bias reference for current-loop DAC and sensor signal conditioning amplifier. Use Value: 75ppm temperature hysteresis and 50ppm/1000hrs long-term stability maintain loop accuracy over years of thermal cycling. |
Use Scenario: Low-power wireless sensor node using 3.0V coin cell and ultra-low-quiescent LDO. IC Role / Device Role / Timing Role: Reference for MCU's internal ADC and voltage monitor, powered directly from battery. Use Value: 35µA max supply current and 100mV dropout enable operation down to 3.1V battery voltage with full accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0V output, ±1.5mV initial accuracy, 50ppm/°C max TC, 50µA supply current, SOT-23-3 package | Higher TC and supply current; smaller footprint but no N.C. pins - less layout flexibility for noise isolation | Choose for space-constrained designs where 50ppm/°C TC is acceptable and SOT-23-3 mounting is preferred |
| ADR3430ARJZ-R7 | 3.0V output, ±2mV initial accuracy, 10ppm/°C max TC, 3.5µA typical supply current, SOT-23-5 package | Lower quiescent current but higher TC; requires external capacitor for stability; different pinout | Choose for ultra-low-power applications where 10ppm/°C TC meets system budget and external COUT is acceptable |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, MAX6193BESA+T offers superior temperature stability (≤5ppm/°C vs. 10/50ppm/°C) and guaranteed capacitive-load stability without external components - making it optimal for high-accuracy, low-maintenance industrial and portable instrumentation.
Availability
MAX6193BESA+T is available at Aetrix Electronics and suitable for hand-held instruments, analog-to-digital converters, and industrial process control systems requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX6193BESA+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications across industrial, medical, and communications markets.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, low-dropout voltage reference applications demanding high initial accuracy, ultra-low drift, and robust capacitive-load stability in space- and energy-constrained systems.
FAQ
What is the maximum load current supported by MAX6193BESA+T?
MAX6193BESA+T supports ±500µA bidirectional load current - it can both source and sink up to 500µA while maintaining output regulation within specification. This capability allows it to drive ADC reference inputs, op-amp bias networks, and active filter stages without external buffering, and is validated across the full –40°C to +85°C temperature range.
Does MAX6193BESA+T require an external output capacitor for stability?
No, MAX6193BESA+T 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 - such as multiplexed sensor arrays - where it improves transient response and reduces overshoot. The absence of mandatory COUT saves board area and BOM cost.
What is the dropout voltage specification for MAX6193BESA+T at full load?
At 500µA load current, MAX6193BESA+T has a guaranteed maximum dropout voltage of 100mV - meaning it maintains regulation with input as low as 3.1V when delivering 3.000V output. This low dropout enables reliable operation from aging batteries or tightly regulated 3.3V rails, and is specified under worst-case conditions including high temperature and maximum load.
How does the temperature coefficient of MAX6193BESA+T compare to standard bandgap references?
MAX6193BESA+T achieves ≤5ppm/°C maximum temperature coefficient - significantly better than typical bandgap references (25–100ppm/°C). This performance results from Maxim's proprietary curvature-correction circuit and laser-trimmed thin-film resistors, enabling applications like precision weigh scales and portable calibrators to meet accuracy targets without temperature compensation firmware or hardware.
Is MAX6193BESA+T pin-compatible with other devices in the MAX619x family?
Yes, all MAX6190–MAX6195/MAX6198 variants, including MAX6193BESA+T, share identical 8-pin SO package pinout and electrical interface - IN, OUT, GND, and five N.C. pins. This allows drop-in substitution across output voltages (1.25V to 5.0V) and accuracy grades (A/B/C) without PCB redesign, provided input voltage and load requirements remain compatible.
MAX6193BESA+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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.17%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 75µVp-p
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- 3.2V ~ 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
MAX6193BESA+T FAQ
1.How can I place an order for MAX6193BESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6193BESA+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 MAX6193BESA+T reliable?
The price and inventory of MAX6193BESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6193BESA+T is usually 5 days.
3.What payment methods are accepted for MAX6193BESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6193BESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6193BESA+T?
MAX6193BESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6193BESA+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 MAX6193BESA+T?
For technical support, including MAX6193BESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6193BESA+T requirements.
6.How does Aetrix verify that MAX6193BESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6193BESA+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 MAX6193BESA+T meets industry standards.
7.What is the process for return or replacement of MAX6193BESA+T?
All MAX6193BESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6193BESA+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 MAX6193BESA+T part is unused and in its original packaging.
Return procedure for MAX6193BESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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