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Analog Devices Inc./Maxim Integrated MAX6120EUR+T
- Part No.:
- MAX6120EUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6120EUR+T.pdf
- Description:
- IC VREF SERIES 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
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Product details
Overview
MAX6120EUR+T from Maxim Integrated is a precision 3-terminal, micropower 1.2V voltage reference in SOT23-3 package, designed for ultra-low-quiescent-current operation in battery-powered systems. It delivers ±1% initial accuracy, 30ppm/°C typical temperature coefficient, and 70µA maximum supply current independent of input voltage across 2.4V–11V range - enabling high-efficiency voltage regulation in portable instrumentation and data-acquisition circuits.
For engineers reviewing the MAX6120EUR+T datasheet, MAX6120EUR+T pinout, MAX6120EUR+T application, or MAX6120EUR+T equivalent, key selection criteria include guaranteed tempco <100ppm/°C over –40°C to +85°C, load regulation of 0.1–1 µV/µA, and compatibility with low-capacitance output loads (≤10nF) in precision analog signal chains.
Technical Context
The MAX6120EUR+T implements a bandgap-based 3-terminal shunt-like architecture with active current regulation, eliminating the need for external series resistors required by traditional two-terminal shunt references. Its supply current remains stable across input voltages (2.4V–11V) and temperatures (–40°C to +85°C), ensuring consistent power efficiency during battery discharge.
Unlike standard shunt references, it features dedicated VIN, GND, and VOUT terminals with no internal connections to pins 2–7 (SOT23-3 only uses pins 1–3). Output voltage stability is maintained under load currents from –50µA to +400µA, with line regulation of 2 µV/V and PSRR >40dB up to 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.200V ±12mV (±1% initial accuracy at +25°C) |
| Supply Current | 50µA typical / 70µA max - enables >1-year runtime on coin-cell batteries |
| Tempco | 30ppm/°C typical / <100ppm/°C max - ensures <±1.2mV drift over –40°C to +85°C |
| Input Voltage Range | 2.4V to 11V - supports single-cell Li-ion down to 2.4V cutoff and multi-cell configurations |
| Load Regulation | 0.1–1 µV/µA - maintains output stability with DAC or ADC reference inputs |
| Output Noise | 10µVp-p (0.1Hz–10Hz) - suitable for 16-bit precision conversion systems |
| Line Regulation | 2 µV/V - minimizes output variation during battery voltage sag |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 3-pin surface-mount, 1.75mm × 2.0mm footprint, 1.1mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Positive supply input | Accepts 2.4V–11V; supplies internal bias circuitry independently of load current |
| GND | Ground reference | Common return path for supply and output; must be low-impedance for noise immunity |
| VOUT | Precision 1.2V output | Stable reference node for ADCs, DACs, or comparators; supports ±50µA to +400µA sink/source |
Key Features
| Feature | Design Value |
|---|---|
| Supply current independence | IQ remains constant across full VIN range and temperature - eliminates resistor sizing trade-offs |
| Low-noise output | 10µVp-p (0.1Hz–10Hz) enables direct use with 16-bit SAR and sigma-delta converters |
| Minimal external components | Operates without output capacitor; input bypass requires only 0.1µF ceramic |
| Wide operating temperature | Specified from –40°C to +85°C - qualified for industrial and portable equipment environments |
| High PSRR | >40dB rejection up to 100kHz - suppresses switching noise from DC-DC converters |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG front-end with 16-bit ADC sampling at 1kSPS. IC Role / Device Role / Timing Role: Provides stable 1.2V reference for ADC voltage scaling and offset calibration. Use Value: 50µA quiescent current extends CR2032 battery life beyond 18 months; 30ppm/°C tempco ensures <±1 LSB error over operating temperature. | Use Scenario: Remote environmental monitoring node with multi-channel thermistor and RTD inputs. IC Role / Device Role / Timing Role: Supplies precision reference for programmable-gain instrumentation amplifier and 24-bit sigma-delta ADC. Use Value: Load regulation of 0.1 µV/µA prevents gain drift during sensor excitation current changes; 10nF max output capacitance simplifies layout. |
| Handheld Test Meters | Smart Energy Meters |
Use Scenario: Pocket-sized multimeter with auto-ranging and true-RMS conversion. IC Role / Device Role / Timing Role: Reference source for dual-slope integrator and digital comparator thresholds. Use Value: 2 µV/V line regulation maintains accuracy across 3.0V–4.2V Li-ion battery range; no external resistor reduces BOM count. | Use Scenario: DIN-rail mounted electricity meter with isolated metrology SoC and tamper detection. IC Role / Device Role / Timing Role: Primary voltage reference for metrology ADC and real-time clock backup regulator. Use Value: Guaranteed <100ppm/°C tempco meets IEC 62053-21 Class 0.5 accuracy requirements; 320mW power dissipation rating supports extended thermal margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3012AIDBZR | 1.2V, ±0.5% initial accuracy, 50ppm/°C max tempco, 50µA IQ, SOT23-3 | Higher initial accuracy but looser tempco spec; requires tighter thermal management | Preferred when absolute initial tolerance dominates system error budget over temperature drift |
| ADR3412ARJZ-R7 | 1.2V, ±0.1% initial accuracy, 30ppm/°C max tempco, 120µA IQ, SOT23-3 | Lower tempco and higher accuracy, but 2.4× higher supply current limits battery life | Selected when long-term stability and calibration repeatability outweigh power constraints |
Compared with REF3012AIDBZR and ADR3412ARJZ-R7, the MAX6120EUR+T uniquely balances ultra-low IQ (50µA), industry-standard tempco (30ppm/°C typ), and cost-effective SOT23-3 packaging - making it optimal for space-constrained, multi-year battery applications where moderate initial accuracy is acceptable.
Availability
MAX6120EUR+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, and handheld test meters requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6120EUR+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 industrial, automotive, communications, and consumer applications.
The MAX6120EUR+T belongs to Maxim's precision voltage reference product line, engineered specifically for ultra-low-power, high-accuracy reference needs in battery-operated instrumentation and portable measurement systems.
FAQ
What is the maximum input voltage rating for the MAX6120EUR+T?
The MAX6120EUR+T has an absolute maximum supply voltage (VIN) rating of +12V. Operation is specified from 2.4V to 11V; exceeding 12V may cause permanent damage. The device also tolerates –0.3V on VIN relative to GND, supporting transient negative spikes in noisy environments. Always observe derating guidelines above +70°C ambient per the datasheet thermal specifications for the SOT23-3 package.
Does the MAX6120EUR+T require an output bypass capacitor?
No, the MAX6120EUR+T operates stably without an output bypass capacitor. It is characterized for capacitive loads up to 10nF - sufficient for most DAC and ADC reference inputs. Adding larger capacitance may induce instability or slow transient response. If used with high-dynamic-load circuits (e.g., switched-capacitor filters), verify phase margin via load-step testing. The MAX6120EUR+T's internal compensation eliminates need for external output C in standard applications.
How does supply current vary with temperature for the MAX6120EUR+T?
The MAX6120EUR+T exhibits minimal supply current variation over temperature: 50µA typical at +25°C, rising to ≤58µA at –40°C and ≤70µA at +85°C. This tight control ensures predictable battery drain across the full industrial temperature range. Unlike many references, its IQ is not strongly correlated with output voltage drift - enabling accurate lifetime estimation in energy-harvesting and coin-cell designs where current draw directly impacts operational longevity.
Can the MAX6120EUR+T drive a 400µA load?
Yes, the MAX6120EUR+T is fully specified to source up to +400µA and sink down to –50µA while maintaining output voltage within ±12mV (±1%) and tempco compliance. This capability supports direct interfacing with op-amp bias networks, multiple parallel ADC references, or low-power microcontroller VREF inputs. Load regulation remains ≤1 µV/µA across this range, preserving accuracy even under dynamic loading conditions encountered in multiplexed sensor systems.
What is the marking code for the MAX6120EUR+T on the SOT23-3 package?
The MAX6120EUR+T is laser-marked on the top surface of the SOT23-3 package with "6120" followed by a 2-character lot-specific code (e.g., "6120AB"). Per Maxim's tape-and-reel documentation, full part name "MAX6120" may also appear on certain production lots. Markings comply with EIA-481-1 standards and are readable under 20× magnification. No functional difference exists between marked variants - all meet identical electrical and thermal specifications per the MAX6120EUR+T datasheet.
MAX6120EUR+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- ±1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 10µVp-p
- Noise - 10Hz to 10kHz:
- 400µVp-p
- Voltage - Input:
- 2.4V ~ 11V
- Current - Supply:
- 70µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6120EUR+T FAQ
1.How can I place an order for MAX6120EUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6120EUR+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 MAX6120EUR+T reliable?
The price and inventory of MAX6120EUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6120EUR+T is usually 5 days.
3.What payment methods are accepted for MAX6120EUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6120EUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6120EUR+T?
MAX6120EUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6120EUR+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 MAX6120EUR+T?
For technical support, including MAX6120EUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6120EUR+T requirements.
6.How does Aetrix verify that MAX6120EUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6120EUR+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 MAX6120EUR+T meets industry standards.
7.What is the process for return or replacement of MAX6120EUR+T?
All MAX6120EUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6120EUR+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 MAX6120EUR+T part is unused and in its original packaging.
Return procedure for MAX6120EUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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