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Analog Devices Inc./Maxim Integrated MAX6167AESA
- Part No.:
- MAX6167AESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6167AESA.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,191
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Product details
Overview
MAX6167AESA from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 4.500V 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, and requires no external compensation capacitor-ideal for high-accuracy ADC biasing in portable instrumentation.
For engineers reviewing the MAX6167AESA datasheet, MAX6167AESA pinout, MAX6167AESA application, or MAX6167AESA equivalent, key selection criteria include dropout voltage at 1mA (50–200mV), load regulation (0.6–0.9mV/mA sourcing), long-term stability (80ppm/1000hr), noise performance (55µVp-p, 0.1Hz–10Hz), and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6167AESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve its 5ppm/°C max TCVOUT and ±2mV initial accuracy. Its BiCMOS process (117-transistor core) enables ultra-low quiescent current (100–120µA typ) with only 3.1–8.0µA/V supply-voltage dependence.
As a three-terminal series-mode reference, it eliminates the external bias resistor required by shunt-mode devices and maintains stability with ≥1µF capacitive loads-enabling direct interface with SAR and sigma-delta ADCs without additional filtering or compensation networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.500V ±2mV at +25°C - ensures precise full-scale calibration for 16-bit+ ADCs without trimming |
| Temp Coefficient | 2–5ppm/°C (max) - guarantees ≤0.36mV drift across -40°C to +85°C operating range |
| Dropout Voltage | 50–200mV at 1mA load - supports operation from 4.6V input, enabling use with single-cell Li-ion or 5V rails |
| Quiescent Current | 100–120µA typ - extends battery life in portable DMMs and handheld sensors |
| Noise (0.1–10Hz) | 55µVp-p - minimizes quantization uncertainty in precision measurement front-ends |
| Load Regulation | 0.6–0.9mV/mA sourcing - maintains <0.5% error under dynamic 5mA load steps typical of multiplexed sensor systems |
| Ripple Rejection | 70dB at 120Hz - suppresses AC line artifacts in offline-powered test equipment |
Pinout & Package
MAX6167AESA is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pins 1, 3, 5, 7, and 8 are No Connect (N.C.); IN (pin 2), GND (pin 4), and OUT (pin 6) form the functional three-terminal interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Input Supply Terminal | Accepts 4.7V–12.6V input; internal regulation sustains output even with 200mV headroom |
| GND (Pin 4) | Reference Ground | Common return for input, output, and internal bandgap core; must be low-impedance for <125ppm hysteresis |
| OUT (Pin 6) | Precision Reference Output | Delivers 4.500V ±2mV; stable into 1µF capacitive loads; drives ADC reference inputs directly |
| Pins 1,3,5,7,8 | No Connection | Unbonded; must remain floating-no routing or thermal vias required |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±2mV initial accuracy and 5ppm/°C tempco without post-package adjustment |
| Internally compensated architecture | Eliminates need for external stabilization capacitor-reduces BOM count and saves >2mm² board area |
| Supply-current independence | Only 3.1–8.0µA/V variation across input range-ensures predictable power budget in variable-voltage systems |
| Stable with 1µF capacitive loads | Supports direct connection to ADCs with integrated sample-and-hold capacitors without oscillation risk |
| Low-output-impedance drive | Delivers 5mA sourcing capability-powers multiple parallel ADC references or op-amp bias networks |
Applications
| Portable Precision DMMs | Industrial Data Acquisition Systems |
|---|---|
Use Scenario: Handheld digital multimeters requiring 5½-digit resolution and auto-ranging across DCV, ACV, and resistance modes. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope and sigma-delta ADCs; sets absolute measurement accuracy baseline. Use Value: ±2mV initial accuracy and 80ppm/1000hr long-term stability ensure calibration validity for 12 months between lab adjustments. | Use Scenario: Rack-mounted DAQ modules sampling 16-channel thermocouple and RTD inputs at 1kSPS with cold-junction compensation. IC Role / Device Role / Timing Role: Reference source for simultaneous-sampling ADCs and programmable-gain instrumentation amplifiers. Use Value: 5ppm/°C tempco and 70dB ripple rejection maintain <0.01% gain error across 0–55°C ambient and noisy 24VDC industrial power rails. |
| Battery-Powered IoT Sensors | Medical Instrumentation Front-Ends |
Use Scenario: Wireless environmental monitors (CO₂, humidity, pressure) powered by coin-cell batteries with 10-year target lifetime. IC Role / Device Role / Timing Role: Low-power reference for ultra-low-noise analog front-end (AFE) and SAR ADC during wake-up bursts. Use Value: 100µA quiescent current and 55µVp-p low-frequency noise enable sub-16-bit ENOB while extending battery life beyond 3 years. | Use Scenario: Portable ECG and EEG devices requiring clinical-grade signal fidelity and IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Isolated reference for patient-connected ADC channels and anti-aliasing filter biasing. Use Value: No external capacitor requirement simplifies reinforced isolation barrier design; 125ppm hysteresis meets medical-grade repeatability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4545BTRZ-R7 | 4.5V output, ±1.5mV initial accuracy, 3ppm/°C max tempco, 950µA quiescent current, SOIC-8 | Higher power consumption; better accuracy/tempco but unsuitable for micropower designs | Select when ultimate stability outweighs battery-life constraints |
| REF5045AIDR | 4.5V output, ±1mV initial accuracy, 3ppm/°C max tempco, 950µA quiescent current, SOIC-8 | Similar performance envelope but higher supply current limits use in <100µA systems | Prefer for factory-calibrated test gear where power is not constrained |
Compared with ADR4545BTRZ-R7 and REF5045AIDR, MAX6167AESA delivers equivalent 4.5V precision at <1/9 the quiescent current-making it the sole viable option for energy-harvesting or multi-year battery-operated systems where µA-level supply budgets are mandatory.
Availability
MAX6167AESA is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and medical sensor applications requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6167AESA 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.
The MAX6161–MAX6168 family was engineered specifically for battery-powered, space-constrained systems needing high-accuracy voltage references with micropower operation and zero external components.
FAQ
What is the maximum load current the MAX6167AESA can source while maintaining specified accuracy?
The MAX6167AESA can source up to 5mA while maintaining its specified load regulation of 0.6–0.9mV/mA. At 5mA, this corresponds to ≤4.5mV total output deviation-well within the ±2mV initial accuracy band when combined with temperature and line effects. Exceeding 5mA may cause dropout or increased error beyond datasheet guarantees. The MAX6167AESA datasheet explicitly confirms 5mA sourcing capability across the full -40°C to +85°C range.
Does the MAX6167AESA require an external output capacitor for stability?
No, the MAX6167AESA does not require an external output capacitor for frequency stability due to its internally compensated architecture. It remains stable with capacitive loads up to 1µF, and many applications operate reliably with no output capacitor-reducing bill-of-materials cost and PCB area. The MAX6167AESA datasheet states "no external capacitor required" as a key feature and confirms stability with ≥1µF loads for improved transient response.
What is the minimum input voltage required for the MAX6167AESA to regulate at 4.500V?
The minimum input voltage for the MAX6167AESA is VOUT + 200mV = 4.700V, per the Absolute Maximum Ratings and Electrical Characteristics tables. Dropout voltage is specified as 50–200mV at 1mA load, meaning regulation is maintained down to 4.7V input. Below this, output voltage drops linearly with input. The MAX6167AESA datasheet guarantees operation from (VOUT + 200mV) to 12.6V, confirming 4.7V as the hard lower limit.
How does the MAX6167AESA compare to shunt-mode references in terms of supply current efficiency?
Unlike shunt-mode references that waste supply current through a series resistor and draw fixed bias current regardless of load, the MAX6167AESA draws only 100–120µA quiescent current-virtually independent of input voltage (3.1–8.0µA/V variation). This eliminates wasted current, maximizes battery life, and avoids the need to size the bias resistor for worst-case load. The MAX6167AESA datasheet highlights this as a core advantage over conventional two-terminal references.
Is the MAX6167AESA pin-compatible with other members of the MAX6161–MAX6168 family?
Yes, all MAX6161–MAX6168 variants-including MAX6167AESA-share identical 8-pin SO package footprints and pinouts (IN, GND, OUT, and five N.C. pins). This allows drop-in replacement across output voltages (1.25V to 5.0V) without PCB layout changes. The MAX6167AESA datasheet's Pin Configuration diagram and Selector Guide confirm uniform SO-8 packaging and pin function mapping across the entire family.
MAX6167AESA 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):
- 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 FAQ
1.How can I place an order for MAX6167AESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6167AESA 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 reliable?
The price and inventory of MAX6167AESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6167AESA is usually 5 days.
3.What payment methods are accepted for MAX6167AESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6167AESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6167AESA?
MAX6167AESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6167AESA 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?
For technical support, including MAX6167AESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6167AESA requirements.
6.How does Aetrix verify that MAX6167AESA is sourced from the original manufacturer or authorized distributors?
All MAX6167AESA 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 meets industry standards.
7.What is the process for return or replacement of MAX6167AESA?
All MAX6167AESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6167AESA, 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 part is unused and in its original packaging.
Return procedure for MAX6167AESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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