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Analog Devices Inc./Maxim Integrated MAX6167AESA+T
- Part No.:
- MAX6167AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6167AESA+T.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
The MAX6167AESA+T from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 4.500V output with ±2mV initial accuracy and 2ppm/°C to 5ppm/°C max temperature coefficient over -40°C to +85°C. It sources up to 5mA while drawing only 100µA typical supply current, features 200mV max dropout at 1mA load, and operates from VOUT + 0.2V to 12.6V input - ideal for high-accuracy ADC biasing in portable instrumentation.
For engineers reviewing the MAX6167AESA+T datasheet, MAX6167AESA+T pinout, MAX6167AESA+T application, or MAX6167AESA+T equivalent, key selection criteria include its 4.5V output tolerance, ultra-low tempco, SO-8 package compatibility, supply-current stability across input voltage, and absence of required external compensation capacitors.
Technical Context
This series-mode voltage reference uses proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 5ppm/°C max TCVOUT and ±2mV initial accuracy. Its internal compensation eliminates need for external capacitors, and its supply current varies by only 3.1–8.0µA/V across input voltage range.
Designed for battery-powered systems, it delivers 5mA source/2mA sink capability with 230µs turn-on settling time (to 0.1% with 50pF load) and maintains stability with ≥1µF capacitive loads - enabling direct interface with SAR and sigma-delta ADCs without additional filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.500V ±2mV at +25°C - ensures precise full-scale reference for 12–16-bit ADCs without calibration |
| Tempco (TCVOUT) | 2–5ppm/°C max - limits drift to ≤0.38mV over -40°C to +85°C ambient |
| Dropout Voltage | 50–200mV at 1mA - enables operation from 4.7V supply in 5V-rail systems |
| Quiescent Current | 100–120µA typical - supports >1-year battery life in µA-level standby systems |
| Load Regulation | 0.6–0.9mV/mA sourcing - holds output within ±4.5mV across full 5mA load range |
| Noise (0.1–10Hz) | 55µVp-p - contributes <0.0012% error to 4.5V reference, critical for low-noise sensor front-ends |
| Ripple Rejection | 70dB at 120Hz - suppresses 100mV AC ripple on supply to 316µV at output |
Pinout & Package
MAX6167AESA+T is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pins 1,3,5,7,8 are No Connect (N.C.), Pin 2 is IN, Pin 4 is GND, and Pin 6 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Input voltage terminal | Accepts 4.7V–12.6V supply; requires no series resistor unlike shunt references |
| GND (Pin 4) | Reference ground | Common return for input, output, and internal bandgap core; must be low-impedance |
| OUT (Pin 6) | Precision voltage output | Delivers regulated 4.500V; stable with 0–1µF capacitive loads; no external capacitor needed |
| N.C. (Pins 1,3,5,7,8) | No internal connection | Must remain unconnected; floating or tied to GND/IN has no functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enable ±2mV initial accuracy and 5ppm/°C max tempco without post-package trimming |
| Internally compensated architecture | Eliminates need for external stabilization capacitor - saves PCB area and BOM cost |
| Supply-current independence | Draws only 100µA typical with ≤8µA/V variation - simplifies power budgeting across input range |
| Low-output-impedance drive | Sources 5mA while maintaining <0.9mV/mA load regulation - directly drives ADC reference inputs |
| Stable with capacitive loads | Remains stable with 0–1µF output capacitance - accommodates layout parasitics and decoupling needs |
Applications
| Portable Precision DMMs | Industrial Data Acquisition Modules |
|---|---|
Use Scenario: Handheld digital multimeters requiring 4½-digit accuracy and battery life >500 hours. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope or sigma-delta ADC, setting full-scale measurement range. Use Value: 4.500V output matches common 5V system rails; ±2mV accuracy enables sub-0.05% absolute measurement error without calibration. | Use Scenario: DIN-rail mounted DAQ units digitizing 4–20mA sensor signals in factory environments. IC Role / Device Role / Timing Role: Stable reference for 16-bit SAR ADC sampling analog sensor outputs under varying ambient temperatures. Use Value: 5ppm/°C max tempco ensures <±0.004V drift over -25°C to +70°C operating range - preserves measurement traceability. |
| Medical Patient Monitors | Test & Measurement Equipment |
Use Scenario: Battery-powered ECG/SpO₂ monitors needing low-noise, long-term stable references for analog front-end gain calibration. IC Role / Device Role / Timing Role: Reference source for programmable-gain amplifier (PGA) offset and gain calibration DACs. Use Value: 55µVp-p (0.1–10Hz) noise and 80ppm/1000hr long-term stability ensure calibration integrity between service intervals. | Use Scenario: Benchtop oscilloscopes and signal generators requiring precise internal DAC references for waveform synthesis. IC Role / Device Role / Timing Role: Master reference for high-resolution DACs generating calibrated analog outputs. Use Value: 230µs turn-on settling (0.1%) allows fast reference enable/disable during auto-ranging - improves measurement throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5045IDR | 4.5V output, 3ppm/°C max tempco, 120µA IQ, SO-8 - higher initial accuracy (±0.5mV), but requires 1µF output cap for stability | Used where tighter initial tolerance justifies added capacitor and board area | Select when ±0.5mV initial accuracy is mandatory and 1µF output cap is acceptable |
| ADR4545BRZ | 4.5V output, 3ppm/°C max tempco, 950µA IQ, SO-8 - higher quiescent current, superior long-term drift (30ppm/1000hr) | Preferred in mains-powered lab equipment where ultra-low drift outweighs power penalty | Select for fixed-power test gear prioritizing 10-year stability over battery runtime |
Compared with REF5045IDR and ADR4545BRZ, the MAX6167AESA+T offers the lowest quiescent current (100µA) and capacitor-free operation - making it optimal for space-constrained, battery-operated precision instruments where moderate initial accuracy suffices.
Availability
MAX6167AESA+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, medical monitoring, and test equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6167AESA+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, power, and reliability requirements in industrial, medical, and communications systems.
The MAX6161–MAX6168 family was engineered specifically for battery-powered, high-accuracy measurement systems needing low dropout, micropower operation, and uncompromised voltage reference stability - with MAX6167AESA+T targeting 4.5V-referenced precision ADC applications.
FAQ
What is the maximum load current the MAX6167AESA+T can source while maintaining specification?
The MAX6167AESA+T can source up to 5mA while maintaining its specified load regulation of 0.6–0.9mV/mA and output voltage accuracy. At 5mA load, the output voltage change remains within ±4.5mV of nominal 4.500V, ensuring reliable operation with SAR and sigma-delta ADC reference inputs without external buffering.
Does the MAX6167AESA+T require an external output capacitor for stability?
No, the MAX6167AESA+T does not require an external output capacitor for stability due to its internally compensated architecture. It remains stable with 0–1µF capacitive loads, eliminating the need for board space and BOM cost associated with external capacitors - a key advantage in space-critical portable designs.
What is the supply voltage range for the MAX6167AESA+T?
The MAX6167AESA+T operates from an input voltage range of VOUT + 0.2V (i.e., 4.7V minimum) up to 12.6V. This low dropout capability allows it to function efficiently from standard 5V rails or higher-voltage battery stacks while maintaining full 4.500V output accuracy and regulation.
How does the MAX6167AESA+T compare to shunt voltage references in terms of supply current efficiency?
Unlike shunt references that waste supply current through a series resistor, the MAX6167AESA+T draws only 100µA typical quiescent current - virtually independent of input voltage (≤8µA/V variation). This eliminates wasted current at light/no load, maximizing battery life and reducing thermal dissipation in portable systems.
What is the turn-on settling time specification for the MAX6167AESA+T?
The MAX6167AESA+T settles to within 0.1% of its final 4.500V output in 230µs with a 50pF load capacitance. Under worst-case conditions (minimum dropout, maximum 5mA load), settling may extend to 1.5ms - a value confirmed in the device's electrical characteristics table and typical operating curves.
MAX6167AESA+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):
- 4.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 55µVp-p
- Noise - 10Hz to 10kHz:
- 55µVrms
- Voltage - Input:
- 4.7V ~ 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
MAX6167AESA+T FAQ
1.How can I place an order for MAX6167AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6167AESA+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 MAX6167AESA+T reliable?
The price and inventory of MAX6167AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6167AESA+T is usually 5 days.
3.What payment methods are accepted for MAX6167AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6167AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6167AESA+T?
MAX6167AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6167AESA+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 MAX6167AESA+T?
For technical support, including MAX6167AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6167AESA+T requirements.
6.How does Aetrix verify that MAX6167AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6167AESA+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 MAX6167AESA+T meets industry standards.
7.What is the process for return or replacement of MAX6167AESA+T?
All MAX6167AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6167AESA+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 MAX6167AESA+T part is unused and in its original packaging.
Return procedure for MAX6167AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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