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Analog Devices Inc./Maxim Integrated MAX6163BESA+
- Part No.:
- MAX6163BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6163BESA+.pdf
- Description:
- IC VREF SERIES 0.17% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:325
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Product details
Overview
MAX6163BESA+ from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 3.000V output with ±5mV initial accuracy and 4ppm/°C to 10ppm/°C max temperature coefficient over -40°C to +85°C. It sources up to 5mA, sinks 2mA, operates from (VOUT + 200mV) to 12.6V input, and requires no external compensation capacitor - ideal for high-accuracy ADC biasing in portable instrumentation.
For engineers reviewing the MAX6163BESA+ datasheet, MAX6163BESA+ pinout, MAX6163BESA+ application, or MAX6163BESA+ equivalent, key selection criteria include initial output tolerance, long-term drift (80ppm/1000hr), load regulation (0.5–0.9mV/mA sourcing), dropout voltage (50–200mV at 1mA), and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6163BESA+ employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve ultra-low thermal drift and high initial accuracy. Its BiCMOS process enables stable operation across wide supply and load variations without external capacitors.
It functions as a three-terminal series-mode reference with IN, GND, and OUT pins - unlike shunt references, its 100µA typical quiescent current is supply-voltage-independent (ΔIIN/ΔVIN ≤ 8.0µA/V), minimizing wasted power in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±5mV at +25°C - ensures precise biasing for 3V ADCs and analog signal chains |
| Temp Coefficient | 4–10ppm/°C max - guarantees <±0.24mV drift over full -40°C to +85°C range |
| Dropout Voltage | 50–200mV at 1mA load - supports operation down to VIN = 3.1V, enabling single-cell Li-ion compatibility |
| Quiescent Current | 100–120µA typical - extends battery life in always-on portable sensors and meters |
| Load Regulation | 0.5–0.9mV/mA sourcing - maintains output stability under dynamic load changes up to 5mA |
| Noise (0.1–10Hz) | 35µVp-p - low enough for 16-bit+ SAR and delta-sigma ADC reference applications |
| Ripple Rejection | 76dB at 120Hz - suppresses AC line noise in offline-powered test equipment |
Pinout & Package
MAX6163BESA+ is housed in an 8-pin SO (Small Outline) package 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 | Input voltage terminal; accepts 3.2V to 12.6V; must be decoupled with 0.1µF ceramic cap for optimal transient response |
| 4 | GND | Analog ground reference; requires low-impedance connection to system ground plane |
| 6 | OUT | Precision 3.000V reference output; capable of sourcing 5mA or sinking 2mA into load |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±5mV initial accuracy and 4–10ppm/°C tempco without post-package calibration |
| Internally compensated architecture | Eliminates need for external output capacitor - saves board area and reduces BOM count |
| Supply-current independence | Quiescent current varies ≤8.0µA/V across input range - simplifies power budgeting in variable-supply systems |
| Stable with 1µF capacitive loads | Supports direct driving of ADC sample-and-hold inputs or op-amp buffers without oscillation risk |
| Low-output-impedance design | Delivers fast settling (<115µs to 0.1%) and minimal load-induced voltage shift in multiplexed sensor systems |
Applications
| Portable Digital Multimeters (DMMs) | Handheld GPS Receivers |
|---|---|
Use Scenario: High-resolution DC voltage measurement requiring stable 3V reference for 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion core and internal DAC calibration. Use Value: ±5mV initial error and 80ppm/1000hr long-term drift ensure metrology-grade accuracy without field recalibration. | Use Scenario: GNSS baseband processor requiring low-noise, low-drift reference for RF front-end biasing and ADC sampling clocks. IC Role / Device Role / Timing Role: Precision analog reference for LNA gain control and ADC reference voltage generation. Use Value: 35µVp-p (0.1–10Hz) noise and 76dB ripple rejection maintain SNR in battery-powered, RF-sensitive environments. |
| Industrial Data Acquisition Modules | Medical Patient Monitoring Sensors |
Use Scenario: 8-channel isolated analog input module for PLCs needing consistent 3V reference across all channels. IC Role / Device Role / Timing Role: Central reference source distributed to multiple SAR ADCs via low-impedance routing. Use Value: 0.5–0.9mV/mA load regulation and 5mA sourcing capability prevent channel-to-channel gain mismatch under varying sensor loads. | Use Scenario: Wearable ECG front-end where battery life and measurement fidelity are critical. IC Role / Device Role / Timing Role: Reference for instrumentation amplifier and 16-bit ADC in ultra-low-power analog signal chain. Use Value: 100µA quiescent current and 200mV dropout enable operation from 3.3V coin cell or single LiPo cell throughout discharge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3330AIDBVR | 3.0V output, ±0.1% (±3mV) initial accuracy, 10ppm/°C max tempco, SOT-23-3 package, 65µA IQ | Smaller footprint but lower output drive (±10mA), no sink capability, limited to 5.5V max input | Preferred for ultra-small PCBs where 3mV accuracy suffices and load current stays within ±10mA |
| ADR3430ARJZ-R7 | 3.0V output, ±0.12% (±3.6mV) initial accuracy, 10ppm/°C max tempco, SOT-23-5 package, 120µA IQ, includes enable pin | Includes shutdown mode (1µA), higher noise (45µVp-p), requires 1µF output cap for stability | Chosen when system-level power gating is required and board space allows extra capacitor |
Compared with REF3330AIDBVR and ADR3430ARJZ-R7, MAX6163BESA+ offers superior load regulation (0.5mV/mA vs ≥1.2mV/mA), true sink capability (2mA), and zero external capacitor requirement - making it optimal for high-precision, multi-load, space-constrained industrial and medical designs.
Availability
MAX6163BESA+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and medical sensor systems requiring stable component supply with guaranteed long-term parametric consistency.
Supply support for MAX6163BESA+ 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 MAX6161–MAX6168 family was engineered specifically for high-accuracy, low-power, low-dropout voltage referencing in battery-operated and space-constrained systems - emphasizing initial accuracy, thermal stability, and minimal external component count.
FAQ
What is the maximum load current that MAX6163BESA+ can source while maintaining specified accuracy?
MAX6163BESA+ can source up to 5mA while maintaining its specified load regulation of 0.5–0.9mV/mA and overall output accuracy. At 5mA, the worst-case voltage deviation due to load is ≤4.5mV - well within the ±5mV initial tolerance band. This makes MAX6163BESA+ suitable for driving multiple ADC references or op-amp bias networks without external buffering.
Does MAX6163BESA+ require an external output capacitor for stability?
No, MAX6163BESA+ does not require an external output capacitor for stability due to its internally compensated architecture. The device remains stable with capacitive loads up to 1µF, and many designs operate reliably with no output capacitor - reducing BOM cost and PCB area. An optional 0.1µF ceramic capacitor may be added to improve transient response if step-load conditions exceed 2mA.
What is the minimum input voltage required for MAX6163BESA+ to regulate properly at full load?
The minimum input voltage for MAX6163BESA+ is VOUT + 200mV = 3.2V at 1mA load, per datasheet specification. At 5mA load, the dropout voltage increases to ≤200mV, so VIN must be ≥3.2V to maintain regulation. For reliable start-up and margin, a minimum of 3.3V is recommended - compatible with standard 3.3V LDO outputs and single-cell Li-ion batteries above 3.3V.
How does the long-term stability of MAX6163BESA+ compare to similar references?
MAX6163BESA+ exhibits 80ppm/1000hr long-term stability at +25°C - among the best in its class for SO-8 packaged references. This is significantly better than generic bandgap references (typically 150–300ppm/1000hr) and matches or exceeds competing 3V references like REF3330 (100ppm/1000hr) and ADR3430 (120ppm/1000hr), ensuring minimal calibration drift in field-deployed equipment.
Can MAX6163BESA+ sink current, and what is the maximum sink capability?
Yes, MAX6163BESA+ can actively sink up to 2mA of load current - a key differentiator from many series references. This capability enables bidirectional current handling in precision current-source/sink circuits, active filter biasing, and programmable reference configurations. Sink regulation is specified at 1.5–4mV/mA, ensuring predictable behavior even when the output is pulled below 3.0V by external circuitry.
MAX6163BESA+ 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.17%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 35µVp-p
- Noise - 10Hz to 10kHz:
- 40µVrms
- Voltage - Input:
- 3.2V ~ 12.6V
- Current - Supply:
- 120µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6163BESA+ FAQ
1.How can I place an order for MAX6163BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6163BESA+ 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 MAX6163BESA+ reliable?
The price and inventory of MAX6163BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6163BESA+ is usually 5 days.
3.What payment methods are accepted for MAX6163BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6163BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6163BESA+?
MAX6163BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6163BESA+ 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 MAX6163BESA+?
For technical support, including MAX6163BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6163BESA+ requirements.
6.How does Aetrix verify that MAX6163BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6163BESA+ 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 MAX6163BESA+ meets industry standards.
7.What is the process for return or replacement of MAX6163BESA+?
All MAX6163BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6163BESA+, 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 MAX6163BESA+ part is unused and in its original packaging.
Return procedure for MAX6163BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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