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Analog Devices Inc./Maxim Integrated MAX6193CESA+
- Part No.:
- MAX6193CESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6193CESA+.pdf
- Description:
- IC VREF SERIES 0.33% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,080
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Product details
Overview
MAX6193CESA+ from Maxim Integrated is a precision, micropower, low-dropout series 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 sourcing/sinking, and is used in high-accuracy ADC/DAC biasing and portable instrumentation.
For engineers reviewing the MAX6193CESA+ datasheet, MAX6193CESA+ pinout, MAX6193CESA+ application, or MAX6193CESA+ equivalent, key selection criteria include its 3.0V output tolerance, ultra-low drift over -40°C to +85°C, dropout voltage of ≤100mV at 500µA, and stability with up to 2.2nF capacitive load-critical for battery-powered precision analog systems.
Technical Context
The MAX6193CESA+ employs a curvature-corrected bandgap architecture with laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy. Its series-mode topology enables bidirectional load current (±500µA) while maintaining low line regulation (20µV/V) and load regulation (0.14µV/µA).
Internally compensated for fast settling (100µs to 0.1%), it remains stable without external compensation and tolerates capacitive loads from 0 to 2.2nF. Supply current varies by 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 | 3.000V ±2mV - tight tolerance enables direct interface with 12-bit+ SAR ADCs without trimming. |
| Temp Coefficient | ≤5ppm/°C - ensures <±0.3mV drift over full -40°C to +85°C range, critical for industrial sensor front-ends. |
| Quiescent Current | ≤35µA - extends battery life in handheld meters and IoT sensor nodes operating for years on coin cells. |
| Dropout Voltage | ≤100mV at 500µA - allows operation from 3.1V supply in 3.3V systems, minimizing headroom loss. |
| Load Regulation | 0.14µV/µA - maintains <70µV shift across full ±500µA load swing, preserving reference integrity under dynamic loads. |
| Line Regulation | 20µV/V - rejects supply ripple effectively; <200µV change over 1V input variation improves PSRR in noisy environments. |
| Noise (0.1–10Hz) | 150µVP-P - low flicker noise supports high-resolution delta-sigma ADCs in precision weigh scales. |
Pinout & Package
MAX6193CESA+ is housed in an 8-pin SO (Small Outline) package with RoHS-compliant lead-free finish. Pin 1–3, 5, 7, and 8 are no-connect (N.C.), Pin 4 is GND, Pin 2 is IN (supply input), and Pin 6 is OUT (3.000V reference output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | No Connection (N.C.) | Not internally bonded; must remain unconnected to avoid parasitic coupling or ESD path disruption. |
| 4 | GND | Reference ground return; requires low-impedance connection to system AGND for optimal noise rejection. |
| 2 | IN | Supply input terminal; accepts 3.2V to 12.6V; bypass capacitor recommended near pin for transient immunity. |
| 6 | OUT | Stable 3.000V reference output; capable of sourcing/sinking ±500µA with minimal voltage shift. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±2mV initial accuracy and <5ppm/°C tempco without external calibration. |
| Curvature-corrected bandgap core | Minimizes parabolic error across temperature, achieving flat VOUT vs. T response. |
| Internal compensation | Guarantees stability with 0–2.2nF output capacitance-eliminates need for external compensation network. |
| Bidirectional load capability | Sinks and sources up to ±500µA, enabling use in both active and passive reference configurations. |
| Virtually supply-independent IQ | Quiescent current varies only 0.8–2µA/V over input range-ensures predictable battery drain in wide-input systems. |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Portable multimeter requiring stable 3V reference for 16-bit ADC during battery discharge from 4.2V to 3.0V. IC Role / Device Role / Timing Role: Primary voltage reference providing excitation and scaling for measurement front-end. Use Value: 100mV dropout enables operation down to 3.1V supply; 5ppm/°C drift prevents calibration drift during field use. |
Use Scenario: Precision data acquisition module using SAR ADC with external reference input. IC Role / Device Role / Timing Role: External reference source setting full-scale input range for 12-bit+ conversion. Use Value: ±2mV initial accuracy eliminates post-fabrication trimming; 0.14µV/µA load regulation maintains LSB accuracy under dynamic digital load switching. |
| Industrial Process Control | Precision 3V Systems |
Use Scenario: 4–20mA transmitter with microcontroller-based signal conditioning in harsh factory environments. IC Role / Device Role / Timing Role: Reference for DAC generating loop current setpoint and for sensor signal conditioning. Use Value: -40°C to +85°C guaranteed operation ensures reliability in uncontrolled enclosures; 75ppm hysteresis prevents repeatability errors after thermal cycling. |
Use Scenario: Low-power IoT node powered by single Li-ion cell regulated to 3.3V, requiring clean 3.0V rail for RF transceiver and sensor ICs. IC Role / Device Role / Timing Role: Precision voltage source for analog blocks and reference for internal ADCs. Use Value: 35µA quiescent current minimizes standby power; 2.2nF capacitive-load stability allows integration with local decoupling without oscillation risk. |
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% initial accuracy (±30mV), 100ppm/°C max tempco, 50µA IQ, SOT23-3 package. | Lower accuracy and higher drift limit use in non-critical biasing; smaller footprint but no N.C. pins for layout flexibility. | Select when cost and size outweigh precision; not suitable for 12-bit+ systems requiring <±2mV tolerance. |
| ADR3430ARJZ-R7 | 3.0V output, ±0.1% initial accuracy (±3mV), 10ppm/°C max tempco, 120µA IQ, SOT23-6 package. | Higher supply current reduces battery life; tighter initial accuracy but looser tempco than MAX6193CESA+. | Prefer where initial calibration dominates long-term stability needs; verify thermal design due to higher power dissipation. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, MAX6193CESA+ delivers superior temperature stability (5ppm/°C vs. ≥10ppm/°C) and lower quiescent current (35µA vs. ≥50µA), making it optimal for high-accuracy, battery-constrained applications where long-term drift and supply headroom are critical.
Availability
MAX6193CESA+ is available at Aetrix Electronics and suitable for precision analog signal chains, portable test equipment, and industrial sensor interfaces requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6193CESA+ 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 in industrial, medical, and communications markets.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, low-drift voltage referencing in space- and energy-constrained systems-emphasizing initial accuracy, thermal stability, and load versatility without external components.
FAQ
What is the output voltage tolerance of MAX6193CESA+ at room temperature?
The MAX6193CESA+ provides a nominal 3.000V output with ±2mV initial accuracy at +25°C, corresponding to a tolerance of ±0.067%. This specification is guaranteed over the full production lot and does not require user calibration. The MAX6193CESA+ achieves this via laser trimming of thin-film resistors during wafer sort, ensuring consistency across units without post-package adjustment.
Does MAX6193CESA+ require an external output capacitor for stability?
No, MAX6193CESA+ is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. An external capacitor is optional and used only to improve transient response during load or supply steps-not for basic stability. The MAX6193CESA+ datasheet explicitly guarantees stability across this full range, eliminating risk of oscillation in capacitor-free layouts common in space-constrained PCBs.
What is the minimum input voltage required for MAX6193CESA+ to maintain regulation at full load?
The minimum input voltage for MAX6193CESA+ is VOUT + 0.2V = 3.2V when sourcing 500µA, based on its guaranteed 100mV dropout voltage at that load. At lighter loads, dropout decreases proportionally-e.g., ~50mV at 250µA. The MAX6193CESA+ will not regulate correctly below 3.2V under full 500µA sourcing, and operation below this threshold risks output collapse or increased noise.
Can MAX6193CESA+ sink current, and if so, how much?
Yes, MAX6193CESA+ can both source and sink up to 500µA while maintaining output voltage within specification. When sinking current (e.g., into an external DAC's reference input), the device holds VOUT within ±2mV of nominal across the full -500µA to +500µA range. This bidirectional capability is confirmed in the MAX6193CESA+ electrical characteristics table under "Sinking: -500µA ≤ IOUT ≤ 0" test conditions.
How does the temperature coefficient of MAX6193CESA+ compare to earlier voltage references?
MAX6193CESA+ achieves ≤5ppm/°C maximum temperature coefficient-significantly tighter than legacy references like LM385 (20–100ppm/°C) or REF02 (25ppm/°C). This is enabled by Maxim's proprietary curvature-correction circuit and laser-trimmed thin-film resistors. Over -40°C to +85°C, MAX6193CESA+ drifts less than ±0.3mV, whereas a 25ppm/°C device would drift >±0.75mV-making MAX6193CESA+ essential for applications demanding sub-LSB stability in wide-temperature environments.
MAX6193CESA+ 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.33%
- Temperature Coefficient:
- 25ppm/°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
MAX6193CESA+ FAQ
1.How can I place an order for MAX6193CESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6193CESA+ 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 MAX6193CESA+ reliable?
The price and inventory of MAX6193CESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6193CESA+ is usually 5 days.
3.What payment methods are accepted for MAX6193CESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6193CESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6193CESA+?
MAX6193CESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6193CESA+ 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 MAX6193CESA+?
For technical support, including MAX6193CESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6193CESA+ requirements.
6.How does Aetrix verify that MAX6193CESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6193CESA+ 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 MAX6193CESA+ meets industry standards.
7.What is the process for return or replacement of MAX6193CESA+?
All MAX6193CESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6193CESA+, 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 MAX6193CESA+ part is unused and in its original packaging.
Return procedure for MAX6193CESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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