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Analog Devices Inc./Maxim Integrated MAX6165AESA
- Part No.:
- MAX6165AESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6165AESA.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
MAX6165AESA from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 5.000V output with ±2mV initial accuracy and 5ppm/°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 MAX6165AESA datasheet, MAX6165AESA pinout, MAX6165AESA application, or MAX6165AESA equivalent, key selection criteria include its 5.000V output tolerance, ultra-low 100µA quiescent current, 200mV max dropout at 1mA, 60µVp-p (0.1Hz–10Hz) noise, and SO-8 package compatibility with space-constrained battery-powered systems.
Technical Context
The MAX6165AESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve 5ppm/°C max TCVOUT and ±2mV initial accuracy. Its BiCMOS process enables internal compensation, eliminating need for external capacitors while maintaining stability with ≥1µF capacitive loads.
As a three-terminal series-mode reference, it draws supply current virtually independent of VIN (≤8µA/V variation), unlike shunt references requiring external bias resistors. Input range starts at VOUT + 200mV, supporting low-voltage operation down to 5.2V supply for 5V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±2mV at +25°C - ensures precise full-scale reference for 12-bit+ SAR ADCs without calibration. |
| Temp Coefficient | 5ppm/°C max - limits drift to ≤0.4mV over -40°C to +85°C, critical for uncalibrated industrial sensors. |
| Quiescent Current | 100µA typical - enables >1-year battery life in coin-cell-powered data loggers drawing <10µA average. |
| Dropout Voltage | 200mV max at 1mA - allows operation from 5.2V supply, compatible with single-cell LiFePO₄ or regulated 5.5V rails. |
| Noise (0.1–10Hz) | 60µVp-p - contributes <0.012% of 5V FS error, suitable for 16-bit delta-sigma ADC front-ends. |
| Load Regulation | 0.9mV/mA sourcing - maintains <4.5mV shift across 0–5mA load, enabling direct drive of op-amp buffers or DAC references. |
| Ripple Rejection | 65dB at 120Hz - attenuates 100mV AC ripple on 5.5V supply to <550µV on output, reducing power-supply-induced measurement error. |
Pinout & Package
MAX6165AESA is housed in an 8-pin SO (Small Outline) package with exposed pad option not specified; pin 1–3,5–8 are No Connect (N.C.), pin 2 is IN (input voltage), pin 4 is GND, and pin 6 is OUT (5.000V reference output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Input supply connection | Accepts 5.2V–12.6V; must be decoupled with 0.1µF ceramic capacitor placed adjacent to pin for optimal line-transient response. |
| GND (Pin 4) | Reference ground node | Low-impedance return path; connects directly to system ground plane to minimize noise coupling into reference output. |
| OUT (Pin 6) | Precision voltage output | Delivers regulated 5.000V; capable of sourcing 5mA or sinking 2mA; stable without external capacitor but benefits from ≥0.1µF for transient load step immunity. |
| N.C. (Pins 1,3,5,7,8) | No internal connection | Must remain unconnected; floating or tied to GND/IN has no functional impact but may affect thermal dissipation or EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±2mV initial accuracy and 5ppm/°C tempco without post-package trimming, reducing production test time and cost. |
| Internally compensated architecture | Eliminates mandatory external compensation capacitor, saving ≥2mm² PCB area in wearables and medical patches. |
| Supply-current independence | Draws only 100µA ±8µA/V across 5.2–12.6V input range, enabling consistent battery-life estimation regardless of supply rail variance. |
| Stable with 1µF capacitive loads | Supports direct connection to ADC reference inputs or op-amp non-inverting stages without oscillation risk, simplifying layout. |
| Low-output impedance | Delivers <1Ω output impedance below 10kHz, minimizing voltage drop under dynamic load steps common in multiplexed sensor systems. |
Applications
| Portable DMMs | Industrial Data Acquisition |
|---|---|
Use Scenario: Handheld digital multimeters requiring 5V reference for 200k-count ADC with <0.01% linearity over temperature. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC conversion core, providing stable full-scale calibration point. Use Value: 5ppm/°C tempco ensures <0.004% reading drift across operating range, meeting Class II DMM accuracy standards without auto-zero cycles. | Use Scenario: 4–20mA loop-powered transmitters with integrated 16-bit ADC and microcontroller. IC Role / Device Role / Timing Role: Precision reference for analog front-end PGA and ADC, referenced to isolated system ground. Use Value: 100µA quiescent current allows >10-year battery life in maintenance-free field instruments, while 200mV dropout supports operation from 5.2V LDO output. |
| Medical Patient Monitors | Automotive Battery Sensors |
Use Scenario: Portable ECG/SpO₂ monitors using low-power MCU and analog signal chain powered by coin cell. IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier gain-setting and ADC reference, sharing ground with analog section. Use Value: 60µVp-p low-frequency noise prevents baseline wander artifacts in sub-100nV bio-signal amplification paths. | Use Scenario: In-vehicle 12V battery voltage monitoring modules with CAN interface and temperature-compensated sensing. IC Role / Device Role / Timing Role: Stable 5V reference for microcontroller ADC measuring scaled battery voltage and thermistor network. Use Value: ±2mV initial accuracy eliminates factory calibration step, reducing BOM cost and test time in high-volume automotive modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, ±1.5mV initial accuracy, 3ppm/°C max tempco, 950µA quiescent current, SO-8 | Higher accuracy and lower tempco but 9.5× higher supply current limits use in ultra-low-power designs | Select ADR4550BRZ when absolute precision outweighs battery life; avoid where <200µA total system sleep current is required. |
| REF5050AIDR | 5.0V output, ±0.5mV initial accuracy, 3ppm/°C max tempco, 1mA quiescent current, SO-8 | Superior initial accuracy and long-term stability (±15ppm/1000hr) but incompatible with sub-1mA power budgets | Choose REF5050AIDR for lab-grade instrumentation needing <0.01% total error; not suitable for energy-harvesting or coin-cell systems. |
Compared with ADR4550BRZ and REF5050AIDR, MAX6165AESA trades minor accuracy degradation (±2mV vs. ±0.5–1.5mV) for decisive power advantage (100µA vs. 950µA–1mA), making it the only viable 5V reference for multi-year battery operation in portable diagnostics and IoT edge nodes.
Availability
MAX6165AESA is available at Aetrix Electronics and suitable for portable DMMs, industrial data acquisition modules, and medical patient monitors requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6165AESA 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 battery-operated, high-performance systems needing micropower operation, low dropout, and uncompromised DC accuracy-addressing limitations of traditional shunt references in space- and energy-constrained designs.
FAQ
What is the maximum input voltage rating for MAX6165AESA?
The MAX6165AESA has an absolute maximum input voltage of +13.5V, but its guaranteed operating range is VOUT + 0.2V (5.2V) to 12.6V. Operation above 12.6V risks exceeding safe power dissipation limits in the SO-8 package, especially at elevated ambient temperatures. The device is rated for continuous operation at 12.6V input with proper PCB thermal relief.
Does MAX6165AESA require an external output capacitor for stability?
No, MAX6165AESA does not require an external output capacitor for frequency stability due to its internally compensated architecture. However, adding ≥0.1µF ceramic capacitor at the OUT pin significantly improves transient response to load steps and reduces overshoot-particularly beneficial when driving ADC reference inputs or op-amp buffers with dynamic current demands.
What is the turn-on settling time specification for MAX6165AESA?
MAX6165AESA settles to within 0.1% of its final 5.000V output in 300µs (typical) with a 50pF load capacitance. This value increases under worst-case conditions: at minimum dropout (5.2V input) and maximum 5mA load, settling time extends to ≤1.5ms. For fast wake-up systems, ensure the host MCU waits ≥300µs after enabling the supply before sampling the reference.
How does the supply current of MAX6165AESA vary with input voltage?
MAX6165AESA exhibits ≤8µA/V variation in supply current across its 5.2V–12.6V input range, with typical quiescent current of 100µA. At 5.2V input, IIN ≈ 100µA; at 12.6V, it rises to ≤150µA. This near-constant current behavior-unlike shunt references-simplifies battery-life modeling and eliminates input-voltage-dependent efficiency loss in portable systems.
Can MAX6165AESA sink current, and what is its maximum sink capability?
Yes, MAX6165AESA can sink up to 2mA of load current with a voltage drop of ≤2.5mV/mA (max). This capability enables active pull-down of reference nodes during power-down sequencing or interfacing with current-sinking DACs and comparators. Sinking is specified over the full -40°C to +85°C range and remains stable without external components.
MAX6165AESA 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 60µVp-p
- Noise - 10Hz to 10kHz:
- 60µVrms
- Voltage - Input:
- 5.2V ~ 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
MAX6165AESA FAQ
1.How can I place an order for MAX6165AESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6165AESA 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 MAX6165AESA reliable?
The price and inventory of MAX6165AESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6165AESA is usually 5 days.
3.What payment methods are accepted for MAX6165AESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6165AESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6165AESA?
MAX6165AESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6165AESA 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 MAX6165AESA?
For technical support, including MAX6165AESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6165AESA requirements.
6.How does Aetrix verify that MAX6165AESA is sourced from the original manufacturer or authorized distributors?
All MAX6165AESA 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 MAX6165AESA meets industry standards.
7.What is the process for return or replacement of MAX6165AESA?
All MAX6165AESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6165AESA, 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 MAX6165AESA part is unused and in its original packaging.
Return procedure for MAX6165AESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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