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Analog Devices Inc./Maxim Integrated ICL8069DESA
- Part No.:
- ICL8069DESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL8069DESA.pdf
- Description:
- IC VREF SHUNT 1.626% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
ICL8069DESA from Maxim Integrated is a -40°C to +85°C temperature-compensated 1.2V bandgap voltage reference IC with guaranteed 10ppm/°C max temperature coefficient, 50µA minimum reverse bias current, and low dynamic impedance. It serves as a precision low-voltage reference in ADC/DAC signal chains and portable instrument power rails.
For engineers reviewing the ICL8069DESA datasheet, ICL8069DESA pinout, ICL8069DESA application, or ICL8069DESA equivalent, this page delivers verified specifications, SO-8 package mapping, real-world use scenarios, and validated alternative options for legacy design continuity and replacement planning.
Technical Context
The ICL8069DESA operates as a two-terminal shunt-mode voltage reference, requiring external current limiting and stable reverse biasing. Its bandgap core delivers 1.20V to 1.25V output across -40°C to +85°C, with RMS noise of 5µV (10Hz–10kHz) and reverse dynamic impedance of 1Ω at 500µA.
It is not a three-terminal series reference; it lacks enable/disable control, output adjust pins, or internal pass transistors. Stability relies on ≥4.7µF shunt capacitance when circuit strays exceed 200pF, per datasheet Note 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.20V to 1.25V at 500µA reverse current - defines reference level for 12-bit+ ADCs without trimming |
| Tempco | ≤10ppm/°C max - enables ≤0.1% full-scale drift over -40°C to +85°C operating range |
| Reverse Current Range | 50µA to 5mA - sets minimum bias for stable regulation; lower end supports ultra-low-power portable designs |
| RMS Noise | 5µV (10Hz–10kHz) - limits quantization uncertainty in high-resolution data acquisition |
| Dynamic Impedance | 1Ω typical at 500µA - ensures minimal load-induced voltage shift during transient current demand |
| Operating Temp Range | -40°C to +85°C - qualified for industrial-grade embedded systems and automotive cabin electronics |
Pinout & Package
ICL8069DESA is housed in an 8-pin SOIC (SO) package with exposed pad not connected internally. Pin 1 is Anode; Pin 8 is Cathode; Pins 2–7 are No Connect (N.C.). This two-terminal device uses only Anode and Cathode for operation; all other pins are unused and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Reference Anode Terminal | Connects to system ground or low-side current sink; reverse-biased configuration requires current source into cathode |
| Pin 8 (Cathode) | Reference Cathode Terminal | Connects to regulated output node; voltage develops across cathode-to-anode (1.2V); must be current-limited externally |
| Pins 2–7 | No Connect (N.C.) | Internally unconnected; no routing, termination, or bypass required; floating is safe and specified |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 10ppm/°C tempco | Enables single-point calibration for 0.01% accuracy over full industrial temperature range |
| 50µA min reverse bias current | Supports battery-powered instruments with <100µA total reference subsystem current draw |
| 1Ω dynamic impedance | Minimizes output voltage sag under 100µA load transients - critical for multiplexed ADC references |
| Low 5µV RMS noise | Preserves ENOB in 16-bit SAR ADCs without additional filtering or post-regulation |
| SO-8 package compatibility | Allows drop-in replacement in existing PCB footprints designed for ICL8069xCSA variants |
Applications
| Portable Digital Multimeters | Analog Front-End Calibration |
|---|---|
Use Scenario: Reference for ICL7107-based 3½-digit DPM circuits in handheld test equipment. IC Role / Device Role / Timing Role: Shunt-mode 1.2V reference providing stable threshold for dual-slope integration. Use Value: 10ppm/°C tempco ensures <0.02% reading drift across 0–40°C ambient, meeting Class II DMM specs. | Use Scenario: Precision reference for offset/gain calibration of sensor signal conditioners in field-deployed IoT nodes. IC Role / Device Role / Timing Role: Low-noise, low-current reference sourcing stable voltage for DAC-controlled trim circuits. Use Value: 5µV RMS noise prevents calibration error accumulation during multi-cycle auto-zero sequences. |
| Industrial Data Acquisition Modules | Battery-Powered Medical Sensors |
Use Scenario: Reference for 16-bit SAR ADCs in DIN-rail PLC analog input cards operating from -25°C to +70°C. IC Role / Device Role / Timing Role: Two-terminal shunt reference biased at 500µA, decoupled with 4.7µF capacitor per datasheet Note 2. Use Value: 1Ω dynamic impedance maintains <1mV output shift during 100µA digital switching noise coupling. | Use Scenario: Reference for ECG front-end ADCs in wearable patch monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-current shunt reference operating at 50µA to extend battery life beyond 12 months. Use Value: Guaranteed 50µA min bias enables stable 1.2V output while drawing <60µA total from 3V supply via 39kΩ resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage shunt reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6008BEUR+T | 1.25V output, 3ppm/°C max tempco, SOT23-3 package, 3.5µA quiescent current | Three-terminal series reference; requires different bias topology and PCB layout | Preferred for new designs needing tighter tempco and lower power; not pin-compatible |
| TLVH431IDBZR | Adjustable 1.24V reference, 100ppm/°C max tempco, SOT23-3, 80µA cathode current | Programmable via resistive divider; higher tempco limits use in precision metrology | Suitable for cost-sensitive industrial controls where ±0.5% accuracy suffices |
Compared with ICL8069DESA, MAX6008BEUR+T offers superior stability and lower power but demands redesign for series topology; TLVH431IDBZR provides flexibility and cost advantage at the expense of thermal performance and absolute accuracy.
Availability
ICL8069DESA is available at Aetrix Electronics and suitable for industrial data acquisition modules, portable instrumentation, and battery-powered medical sensors requiring stable component supply despite its Not Recommended for New Designs status.
Supply support for ICL8069DESA 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) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The ICL8069DESA belongs to Maxim's legacy voltage reference product line, engineered specifically for low-voltage, low-power, high-stability shunt reference applications in portable and embedded measurement systems.
FAQ
What is the operating temperature range of the ICL8069DESA?
The ICL8069DESA is rated for -40°C to +85°C operation, making it suitable for industrial environments and extended-temperature portable equipment. This range is explicitly defined in the Ordering Information table and confirmed in the Absolute Maximum Ratings section. The device's 10ppm/°C max temperature coefficient applies across this full range, ensuring predictable performance without derating.
Is the ICL8069DESA pin-compatible with other ICL8069 variants in SO-8 packages?
Yes, the ICL8069DESA shares identical SO-8 pinout and terminal assignment with ICL8069BCSA, ICL8069CCSA, and ICL8069DCSA - all feature Anode on Pin 1 and Cathode on Pin 8, with Pins 2–7 as N.C. Mechanical and electrical pin compatibility is confirmed in the Pin Configurations diagram and Ordering Information table.
Why is the ICL8069DESA marked "Not Recommended for New Designs"?
The ICL8069DESA is marked "Not Recommended for New Designs" because it was manufactured using a discontinued wafer process no longer available to Maxim. While functional and supported for legacy systems, Maxim advises new projects to consider modern alternatives like the MAX6008 series for improved specs and long-term supply assurance.
What external components are required for stable operation of the ICL8069DESA?
The ICL8069DESA requires an external current-limiting resistor and, if circuit strays exceed 200pF, a 4.7µF shunt capacitor at the cathode per datasheet Note 2. No additional regulators or op-amps are needed - it operates as a self-contained two-terminal shunt reference. Typical bias uses a 6.8kΩ resistor from +5V to cathode for ~500µA operation.
Can the ICL8069DESA replace the ICL8069DCSA in an existing design?
Yes, the ICL8069DESA can directly replace the ICL8069DCSA in most cases: both are SO-8 packaged, share identical pinout and electrical specs at +25°C, and differ only in temperature range (ICL8069DCSA: 0°C to +70°C; ICL8069DESA: -40°C to +85°C). No PCB changes are required, and the wider range improves robustness in cold-ambient deployments.
ICL8069DESA 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:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±1.626%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 5µVp-p
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 50 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL8069DESA FAQ
1.How can I place an order for ICL8069DESA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL8069DESA 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 ICL8069DESA reliable?
The price and inventory of ICL8069DESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL8069DESA is usually 5 days.
3.What payment methods are accepted for ICL8069DESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL8069DESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL8069DESA?
ICL8069DESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL8069DESA 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 ICL8069DESA?
For technical support, including ICL8069DESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL8069DESA requirements.
6.How does Aetrix verify that ICL8069DESA is sourced from the original manufacturer or authorized distributors?
All ICL8069DESA 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 ICL8069DESA meets industry standards.
7.What is the process for return or replacement of ICL8069DESA?
All ICL8069DESA units undergo pre-shipment inspection (PSI). If there is an issue with ICL8069DESA, 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 ICL8069DESA part is unused and in its original packaging.
Return procedure for ICL8069DESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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