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Analog Devices Inc./Maxim Integrated MAX6161AESA+T
- Part No.:
- MAX6161AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6161AESA+T.pdf
- Description:
- IC VREF SERIES 0.16% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,297
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Product details
Overview
MAX6161AESA+T from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering 1.25V output with ±2mV initial accuracy and 10ppm/°C max temperature coefficient over -40°C to +85°C. It sources up to 4mA, sinks 2mA, operates from (VOUT + 200mV) to 12.6V, and draws only 100µA typical supply current - ideal for high-accuracy ADC biasing in portable battery-powered systems.
For engineers reviewing the MAX6161AESA+T datasheet, MAX6161AESA+T pinout, MAX6161AESA+T application, or MAX6161AESA+T equivalent, key selection criteria include its 200mV max dropout at 1mA, no external capacitor requirement, stable operation with 1µF capacitive loads, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6161AESA+T is a three-terminal, internally compensated series-mode voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors. Its BiCMOS process enables ultra-low quiescent current (100µA typ) with only 8µA/V variation across input voltage.
It delivers 1.25V referenced to GND, supports sourcing (0–4mA) and sinking (-2mA–0) load currents, and maintains stability without external compensation - eliminating board area overhead while ensuring fast 50µs turn-on settling to 0.1%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±2mV at +25°C - ensures precise ADC full-scale calibration without trimming. |
| Temp Coefficient | ≤10ppm/°C (max) - guarantees <±0.85mV drift over -40°C to +85°C for stable sensor signal chains. |
| Dropout Voltage | ≤200mV at 1mA load - enables operation from 1.45V supply, critical for single-cell Li-ion or coin-cell systems. |
| Supply Current | 100µA typical, ≤150µA max - minimizes battery drain in always-on monitoring circuits. |
| Load Regulation | 0.9mV/mA sourcing - limits output shift to <3.6mV across full 4mA load range, preserving measurement linearity. |
| Noise (0.1–10Hz) | 20µVP-P - contributes <0.0016% error in 16-bit ADC conversions at 1.25V reference. |
| Ripple Rejection | 80dB at 120Hz - suppresses AC line noise in offline-powered instrumentation. |
Pinout & Package
MAX6161AESA+T 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.), simplifying layout by allowing unused pins to remain un-routed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 2 | IN | Input voltage terminal; accepts 1.45V to 12.6V; requires 0.1µF ceramic bypass if high line-transient immunity needed. |
| 4 | GND | Ground reference for output and internal bandgap; must connect to clean analog ground plane. |
| 6 | OUT | Stable 1.25V reference output; capable of sourcing 4mA or sinking 2mA; stable with ≥1µF capacitive load. |
| 1,3,5,7,8 | N.C. | No internal connection; may be left floating or tied to GND for mechanical stability - no electrical impact. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enable ±2mV initial accuracy and 10ppm/°C tempco without post-assembly calibration. |
| Proprietary curvature-correction circuit | Minimizes parabolic VOUT vs. T error, reducing worst-case drift by >30% vs. standard bandgap references. |
| No external compensation capacitor required | Eliminates 1–2 mm² PCB area per device and removes capacitor aging/sourcing risk in long-life designs. |
| Supply-current independence (8µA/V max ΔIIN/ΔVIN) | Ensures predictable battery life across varying supply voltage - e.g., 3.0V to 4.2V Li-ion discharge curve. |
| Stable with 1µF capacitive loads | Supports direct driving of SAR ADC sample capacitors or op-amp buffers without phase-margin concerns. |
Applications
| Analog-to-Digital Converters (ADCs) | Portable Battery-Powered Systems |
|---|---|
Use Scenario: Providing reference voltage for 16-bit SAR ADCs in handheld test equipment. IC Role / Device Role / Timing Role: Precision voltage reference establishing full-scale input range for digitization. Use Value: ±2mV initial accuracy and 10ppm/°C tempco ensure <±0.01% total unadjusted error over temperature, meeting Class I DMM requirements. | Use Scenario: Powering sensor front-ends in wireless environmental monitors running on CR2032 coin cells. IC Role / Device Role / Timing Role: Low-quiescent-current reference enabling multi-year battery life with periodic wake-up sampling. Use Value: 100µA typical supply current and 200mV dropout allow operation down to 1.45V, extending usable cell voltage range by 150mV. |
| Notebook Computers | Precision +3V/+5V Systems |
Use Scenario: Biasing high-speed ADCs in embedded controller telemetry paths for thermal/voltage monitoring. IC Role / Device Role / Timing Role: Stable 1.25V reference for ratiometric sensor measurements independent of main rail fluctuations. Use Value: 80dB ripple rejection at 120Hz suppresses switching regulator noise coupling into analog sensing paths. | Use Scenario: Generating accurate 1.25V reference for DACs and programmable gain amplifiers in industrial PLC analog I/O modules. IC Role / Device Role / Timing Role: Primary voltage reference for closed-loop calibration and offset correction circuits. Use Value: 125ppm output hysteresis and 80ppm/1000hr long-term stability ensure calibration validity over 10+ years of field operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF191GSZ-REEL | 1.25V output, ±1.5mV initial accuracy, 8ppm/°C tempco, 125µA supply current, SO-8 package. | Higher initial accuracy but higher supply current; requires 1µF output capacitor for stability. | Prefer REF191GSZ-REEL when tighter initial tolerance is mandatory and board space allows capacitor placement. |
| ADR3412ARJZ-R7 | 1.2V output, ±0.1% initial accuracy (±1.2mV), 10ppm/°C tempco, 120µA supply current, SOT-23-5 package. | Different output voltage (1.2V vs. 1.25V); smaller footprint but lower output drive (10mA sink/source). | Choose ADR3412ARJZ-R7 only if system redesign accommodates 1.2V reference and SOT-23 layout constraints. |
Compared with REF191GSZ-REEL and ADR3412ARJZ-R7, MAX6161AESA+T uniquely combines 1.25V output, no-output-capacitor operation, and 4mA sourcing capability in SO-8 - making it optimal for legacy-compatible, space-sensitive, high-drive analog subsystems.
Availability
MAX6161AESA+T is available at Aetrix Electronics and suitable for portable battery-powered systems, precision ADC biasing, and notebook computer telemetry requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6161AESA+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, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX6161–MAX6168 family was engineered specifically for high-accuracy, low-power voltage referencing in battery-constrained and space-limited systems - emphasizing micropower operation, low dropout, and capacitor-free stability.
FAQ
What is the maximum load current that MAX6161AESA+T can source?
The MAX6161AESA+T can source up to 4mA while maintaining specified output voltage accuracy and regulation. This capability is confirmed in the Electrical Characteristics table under "Load Regulation" for sourcing conditions (0 ≤ IOUT ≤ 4mA) and is validated across the full -40°C to +85°C operating temperature range. Exceeding 4mA may cause output droop beyond the 0.9mV/mA load regulation spec.
Does MAX6161AESA+T require an external output capacitor for stability?
No, MAX6161AESA+T does not require an external output capacitor for frequency stability - a key design advantage documented in the Applications Information section. It remains stable with capacitive loads from 0 to ≥1µF. Adding a 1µF capacitor improves transient response during load steps but is optional and not needed for basic DC accuracy or loop stability.
What is the minimum input voltage required for proper operation of MAX6161AESA+T?
The minimum input voltage for MAX6161AESA+T is (VOUT + 200mV) = 1.45V, as specified in the General Description and confirmed by the 200mV max dropout voltage at 1mA load. Operation below 1.45V risks loss of regulation and increased output error; the device is guaranteed functional from 1.45V to 12.6V across the full -40°C to +85°C temperature range.
How does the supply current of MAX6161AESA+T vary with input voltage?
MAX6161AESA+T exhibits supply current variation of ≤8µA/V across its input voltage range (1.45V to 12.6V), as stated in the General Description and Electrical Characteristics table. At +25°C, typical supply current is 100µA and remains nearly constant - e.g., increasing only ~20µA from 1.45V to 12.6V - enabling predictable power budgeting in wide-input-voltage systems.
Is MAX6161AESA+T RoHS-compliant and lead-free?
Yes, MAX6161AESA+T is RoHS-compliant and lead-free, indicated by the "+" suffix in the part number per Maxim's Ordering Information table. The package is an 8-pin SO with lead(Pb)-free finish, fully compliant with EU RoHS Directive 2011/65/EU and compatible with standard Pb-free reflow profiles.
MAX6161AESA+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):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.16%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- 15µVrms
- Voltage - Input:
- 2.5V ~ 12.6V
- Current - Supply:
- 150µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6161AESA+T FAQ
1.How can I place an order for MAX6161AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6161AESA+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 MAX6161AESA+T reliable?
The price and inventory of MAX6161AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6161AESA+T is usually 5 days.
3.What payment methods are accepted for MAX6161AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6161AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6161AESA+T?
MAX6161AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6161AESA+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 MAX6161AESA+T?
For technical support, including MAX6161AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6161AESA+T requirements.
6.How does Aetrix verify that MAX6161AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6161AESA+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 MAX6161AESA+T meets industry standards.
7.What is the process for return or replacement of MAX6161AESA+T?
All MAX6161AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6161AESA+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 MAX6161AESA+T part is unused and in its original packaging.
Return procedure for MAX6161AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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