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Analog Devices Inc./Maxim Integrated MAX8069ESA+T
- Part No.:
- MAX8069ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8069ESA+T.pdf
- Description:
- IC VREF SHUNT 2.4% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,153
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Product details
Overview
MAX8069ESA+T from Maxim Integrated is a 1.2V temperature-compensated bandgap voltage reference IC designed for precision analog signal conditioning in low-power systems. It delivers 1.22V typical output at 500µA reverse current, ±25ppm/°C max tempco over –40°C to +85°C, and 20µV RMS noise (10Hz–10kHz), serving as a stable reference for ADCs, DACs, and portable instrumentation.
For engineers reviewing the MAX8069ESA+T datasheet, MAX8069ESA+T pinout, MAX8069ESA+T application, or MAX8069ESA+T equivalent, key selection criteria include guaranteed 25ppm/°C tempco, 60µA minimum operating current, low 2Ω dynamic impedance, reverse-voltage stability up to 20V transient, and SO-8 package compatibility with ICL8069.
Technical Context
The MAX8069ESA+T implements a two-terminal bandgap-based shunt reference architecture, operating in reverse-bias mode with cathode as output and anode grounded. Its internal curvature compensation ensures monotonic voltage vs. temperature behavior across –40°C to +85°C.
It requires no external biasing components beyond a series resistor and supports stable operation down to 60µA reverse current, with dynamic impedance under 2Ω at 500µA - enabling high-accuracy, low-noise reference generation without active regulation circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.22V typical at 500µA reverse current; enables precise 1.2V system-level reference alignment |
| Tempco | ≤25ppm/°C max over –40°C to +85°C; ensures <±3mV drift across full industrial range |
| Reverse Current Range | 60µA to 5mA; supports ultra-low-power sensor interfaces and battery-operated DVMs |
| Dynamic Impedance | 0.6Ω typ / 2Ω max at 500µA; minimizes load-induced output variation in shared-reference designs |
| RMS Noise | 20µV (10Hz–10kHz); preserves ENOB in 16-bit+ ADC applications without additional filtering |
| Max Reverse Voltage | 20V transient rating; withstands plug-in surges in powered test fixtures |
Pinout & Package
MAX8069ESA+T is housed in an 8-pin SOIC (SO-8) package per package code S8-2, with lead-free finish. Pin 1 is Anode (ground connection), Pin 8 is Cathode (output), and Pins 2–7 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Ground reference node; must be connected to system GND for proper shunt operation |
| Pin 8 | Cathode | Reference output terminal; supplies regulated 1.22V when reverse-biased via series resistor |
| Pins 2–7 | No Connect | Internally unconnected; no PCB routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed tempco ≤25ppm/°C | Ensures reference stability meets 16-bit ADC LSB requirements over full industrial temperature range |
| Low 60µA min operating current | Enables use in micropower systems such as handheld meters and IoT sensor nodes |
| 20µV RMS noise (10Hz–10kHz) | Eliminates need for external noise-filtering capacitors in precision measurement front-ends |
| Stable operation with >200pF strays | Allows direct integration into PCB layouts with long traces or adjacent switching circuits |
Applications
| ADC Reference Source | DAC Output Calibration |
|---|---|
Use Scenario: High-resolution SAR or sigma-delta ADCs requiring stable, low-noise reference input for accurate digitization of sensor signals. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing 1.22V reference voltage to ADC VREF pin. Use Value: 25ppm/°C tempco and 20µV noise ensure <±0.004% full-scale error across temperature and bandwidth. | Use Scenario: Precision DACs used in programmable voltage sources or calibration equipment needing traceable output accuracy. IC Role / Device Role / Timing Role: External reference source replacing internal DAC reference to improve absolute output accuracy. Use Value: Low 2Ω dynamic impedance prevents reference droop during DAC settling transients. |
| Portable Digital Multimeter | Threshold Detector Circuit |
Use Scenario: Battery-powered handheld DMMs where supply headroom is limited and power efficiency is critical. IC Role / Device Role / Timing Role: Primary reference for ICL7107-based DPM core, configured in double-regulated 100mV mode. Use Value: 60µA minimum current allows operation from single 3.7V Li-ion cell with minimal quiescent loss. | Use Scenario: Overvoltage/undervoltage protection circuits comparing rail voltage against fixed thresholds. IC Role / Device Role / Timing Role: Stable 1.22V reference feeding comparator inputs for accurate trip-point definition. Use Value: Guaranteed 25ppm/°C tempco ensures threshold accuracy remains within ±0.5% over –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA25+ | 2.5V output, 3ppm/°C max tempco, 100µA min current, SO-8 | Higher voltage, tighter tempco, higher power - suited for metrology-grade references | Select when 2.5V output and sub-5ppm stability are required; not drop-in for 1.2V designs |
| TLV431ACDBVR | Adjustable 1.24V reference, 100ppm/°C max tempco, 80µA min current, SOT-23-3 | Lower cost, smaller footprint, wider tempco - suitable for cost-sensitive consumer applications | Select when board space is constrained and ±10mV tempco drift is acceptable |
Compared with MAX6126AASA25+ and TLV431ACDBVR, the MAX8069ESA+T uniquely balances 1.2V output, industrial temp range, and 25ppm/°C stability in SO-8 - making it optimal for legacy-compatible, low-headroom precision analog systems where ICL8069 pinout retention is required.
Availability
MAX8069ESA+T is available at Aetrix Electronics and suitable for portable instrumentation, precision data acquisition, and industrial sensor interface applications requiring stable component supply and long-term obsolescence management.
Supply support for MAX8069ESA+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, medical, and communications applications.
The MAX8069ESA+T belongs to Maxim's low-voltage reference product line, engineered specifically for 1.2V bandgap references in space-constrained, low-power systems where compatibility with legacy ICL8069 layouts is essential.
FAQ
What is the output voltage tolerance of the MAX8069ESA+T at 500µA reverse current?
The MAX8069ESA+T delivers 1.20V to 1.25V output voltage at 500µA reverse current, with 1.22V typical. This ±2.1% initial accuracy (referred to 1.22V) is specified across the full –40°C to +85°C operating range and supports direct use in 12-bit to 14-bit precision systems without trimming.
Can the MAX8069ESA+T replace the ICL8069 in existing designs?
Yes, the MAX8069ESA+T is explicitly described as a functional alternative to the ICL8069 with identical pinout and matching electrical behavior. Its SO-8 footprint, Anode/Cathode pin assignment, and N.C. pin configuration allow direct PCB-level replacement without layout changes or schematic updates.
What is the minimum reverse current required for stable regulation in the MAX8069ESA+T?
The MAX8069ESA+T maintains stable regulation down to 60µA reverse current, as confirmed in both the Electrical Characteristics table and Typical Operating Characteristics plots. Operation below this level may result in increased tempco and output voltage deviation beyond specification limits.
Does the MAX8069ESA+T require an external capacitor for stability?
A 4.7µF shunt capacitor is recommended only if circuit stray capacitance exceeds 200pF, per Note 2 in the datasheet. Under typical PCB conditions with <200pF strays, the MAX8069ESA+T operates stably without any external capacitor - simplifying layout and reducing BOM count.
What is the maximum transient reverse voltage the MAX8069ESA+T can withstand?
The MAX8069ESA+T is rated for up to 20V transient reverse voltage during hot-plug events, as stated in Absolute Maximum Ratings Note 1. This rating applies only to short-duration transients (e.g., test fixture insertion); continuous reverse voltage must remain ≤1.25V to maintain regulation integrity.
MAX8069ESA+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:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.22V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±2.4%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX8069ESA+T FAQ
1.How can I place an order for MAX8069ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8069ESA+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 MAX8069ESA+T reliable?
The price and inventory of MAX8069ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8069ESA+T is usually 5 days.
3.What payment methods are accepted for MAX8069ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8069ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8069ESA+T?
MAX8069ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8069ESA+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 MAX8069ESA+T?
For technical support, including MAX8069ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8069ESA+T requirements.
6.How does Aetrix verify that MAX8069ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX8069ESA+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 MAX8069ESA+T meets industry standards.
7.What is the process for return or replacement of MAX8069ESA+T?
All MAX8069ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8069ESA+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 MAX8069ESA+T part is unused and in its original packaging.
Return procedure for MAX8069ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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