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Analog Devices Inc./Maxim Integrated ICL8069DCSA
- Part No.:
- ICL8069DCSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL8069DCSA.pdf
- Description:
- IC VREF SHUNT 1.626% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,677
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Product details
Overview
ICL8069DCSA from Maxim Integrated is a 1.2V temperature-compensated bandgap voltage reference IC in 8-pin SO package, specified for 0°C to +70°C operation, with guaranteed 10ppm/°C max temperature coefficient, 50µA minimum reverse current, and 15mV max output voltage change over 50µA–5mA reverse current range-used as precision low-voltage reference in ADC/DAC signal chains.
For engineers reviewing the ICL8069DCSA datasheet, ICL8069DCSA pinout, ICL8069DCSA application, or ICL8069DCSA equivalent, key selection considerations include its 1.2V nominal output, SO-8 package compatibility, low-noise (5µV RMS, 10Hz–10kHz), stable operation down to 50µA bias, and suitability for portable instrument and double-regulated DPM circuits requiring tight thermal drift control.
Technical Context
The ICL8069DCSA implements a two-terminal bandgap reference topology operating in reverse-biased mode, delivering a fixed 1.2V output without external components. Its internal curvature compensation achieves <10ppm/°C TC across 0°C to +70°C, and dynamic impedance remains low (<2Ω) at 500µA reverse current.
Stability is ensured via internal design that avoids oscillation up to 200pF stray capacitance; a 4.7µF shunt capacitor is recommended only when strays exceed that threshold. It draws no forward current in normal use-reverse current defines bias and noise performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.20V to 1.25V at 500µA reverse current-tight 50mV span enables high-resolution reference selection in 12-bit+ systems. |
| Tempco | ≤10ppm/°C max over 0°C to +70°C-guaranteed drift performance eliminates need for system-level calibration in industrial-grade instruments. |
| Reverse Current Range | 50µA to 5mA-supports ultra-low-power operation (e.g., battery-powered DVMs) while maintaining stability and noise specs. |
| RMS Noise (10Hz–10kHz) | 5µV-low enough to avoid degrading ENOB in 16-bit SAR ADCs when used as reference source. |
| Dynamic Impedance | <2Ω at 500µA-minimizes load-induced output shift during fast-switching DAC updates or multiplexed sensor readings. |
| Output Voltage Change | ≤15mV over 50µA–5mA reverse current-enables consistent accuracy across wide supply/load variations without trimming. |
Pinout & Package
ICL8069DCSA is housed in an 8-pin SOIC (SO) package per JEDEC MS-012, 150-mil body width, with standard gull-wing leads. Pin 1 is Anode; pins 2–7 are No Connect (N.C.); pin 8 is Cathode. The device operates as a two-terminal reference-Anode and Cathode form the active terminals; all N.C. pins must remain unconnected and floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Reference Anode terminal | Connected to system ground or low-impedance return path; reverse current flows into this pin during operation. |
| Pins 2–7 | No Connect (N.C.) | Internally unconnected; must be left floating-no routing, pull-up, or tie-down permitted. |
| Pin 8 (Cathode) | Reference Cathode terminal | Provides 1.2V output node; connects to load or ADC reference input; reverse current exits here. |
Key Features
| Feature | Design Value |
|---|---|
| Bandgap-based 1.2V reference | Delivers stable, process-insensitive output without external resistors or trimming-ideal for cost-sensitive, space-constrained PCBs. |
| Guaranteed ≤10ppm/°C tempco | Meets commercial-grade instrumentation requirements without derating or thermal shielding-reduces BOM count in portable test gear. |
| Low 50µA min bias current | Enables operation from micropower supplies (e.g., coin-cell–powered meters) while preserving 5µV noise and 15mV load regulation. |
| Stable to 200pF stray capacitance | Eliminates need for external compensation in most layouts-only requires 4.7µF cap if board parasitics exceed threshold. |
Applications
| Portable Digital Multimeters | Industrial 12-Bit ADC Front Ends |
|---|---|
Use Scenario: Battery-powered handheld DMMs requiring stable 1.2V reference for dual-slope integration and LCD driver bias. IC Role / Device Role / Timing Role: Two-terminal voltage reference providing primary scaling reference for ICL7107-based DPM core. Use Value: 10ppm/°C tempco ensures <0.01% full-scale error over 0°C–70°C ambient; 50µA operation extends battery life beyond 200 hours. | Use Scenario: Factory automation analog input modules digitizing 4–20mA loop signals with 12-bit SAR ADCs. IC Role / Device Role / Timing Role: Precision reference source for ADC VREF input, rejecting supply ripple and thermal drift in DIN-rail mounted PLC I/O cards. Use Value: 15mV output change over 50µA–5mA load current enables consistent LSB accuracy across varying channel count and sampling rate configurations. |
| Threshold Detectors for Low-Voltage Logic | Low-Cost Voltage Regulator Feedback Reference |
Use Scenario: Overvoltage protection circuit in 1.8V/2.5V microcontroller power domains using comparator-based trip detection. IC Role / Device Role / Timing Role: Stable 1.2V reference feeding non-inverting input of rail-to-rail comparator to set precise trip point. Use Value: Low dynamic impedance (<2Ω) prevents comparator hysteresis shift under transient load, ensuring repeatable 1.22V ±2mV trigger threshold. | Use Scenario: Feedback node reference in adjustable LDO designs targeting 1.2V output with minimal external components. IC Role / Device Role / Timing Role: Fixed 1.2V reference replacing resistor divider in TLV70xx-class regulators to improve line/load regulation and thermal stability. Use Value: Eliminates resistor tolerance and TCR errors-output accuracy improves from ±2% to ±0.5% over temperature with same layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA21 | 1.212V output, 3ppm/°C max tempco, 500nA quiescent current, SO-8 package | Lower drift and bias current; requires external decoupling; not drop-in due to different pinout (VOUT/IN/GND vs. Anode/Cathode/N.C.) | Preferred for new designs needing higher precision; not pin-compatible-requires PCB revision. |
| LM385B-1.2/NOPB | 1.235V output, 20ppm/°C max tempco, TO-92/SO-8 options, 10µA–20mA operating range | Wider tempco and looser initial accuracy (±1% vs. ±2.5% for ICL8069DCSA); lower cost; widely available | Suitable for cost-driven, non-critical references where 20ppm/°C is acceptable; same SO-8 footprint but different pin function (cathode/anode swapped). |
Compared with MAX6126AASA21 and LM385B-1.2/NOPB, the ICL8069DCSA offers the narrowest tempco among legacy SO-8 two-terminal references but lacks modern ultra-low IQ; LM385B provides broader availability and lower cost at higher drift, while MAX6126 delivers superior specs at revised layout cost.
Availability
ICL8069DCSA is available at Aetrix Electronics and suitable for portable instruments, industrial ADC front ends, threshold detectors, and low-cost voltage regulator feedback requiring stable component supply despite end-of-life status.
Supply support for ICL8069DCSA 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) designed precision analog and mixed-signal ICs for industrial, medical, and communications systems before its 2021 acquisition.
The ICL8069 series belongs to Maxim's legacy low-voltage reference product line, engineered specifically for bandgap-stable, two-terminal operation in portable and cost-sensitive measurement equipment.
FAQ
What is the operating temperature range for ICL8069DCSA?
The ICL8069DCSA is rated for 0°C to +70°C operation per its ordering information and electrical characteristics table. This commercial-grade range applies to all SO-8 variants including ICL8069DCSA, and all guaranteed parameters-including 10ppm/°C max tempco and 1.20V–1.25V output-are specified across this full range.
Is ICL8069DCSA pin-compatible with other ICL8069 variants in SO-8 package?
Yes, all ICL8069xCSA variants-including ICL8069BCSA, ICL8069CCSA, and ICL8069DCSA-share identical SO-8 pinout: Pin 1 = Anode, Pins 2–7 = N.C., Pin 8 = Cathode. Differences lie solely in tempco grade (25ppm, 50ppm, 10ppm) and output voltage tolerance-not pin function or package dimensions.
Can ICL8069DCSA be used in place of a Zener diode reference?
Yes, the ICL8069DCSA functions as a two-terminal, low-voltage Zener-like reference but with superior performance: it delivers 1.2V (vs. typical 2.4V+ Zeners), guarantees ≤10ppm/°C drift, and maintains low noise (5µV RMS) and dynamic impedance (<2Ω) down to 50µA-making it more suitable than discrete Zeners for precision 12-bit+ systems.
Does ICL8069DCSA require an external capacitor for stability?
An external 4.7µF capacitor is recommended only if board-level stray capacitance exceeds 200pF, per Note 2 in the datasheet. Under typical SO-8 PCB layouts with short traces, the ICL8069DCSA operates stably without any external capacitor-its internal design prevents oscillation in standard conditions.
Why is ICL8069DCSA marked "Not Recommended for New Designs"?
The ICL8069DCSA uses a discontinued wafer process no longer supported by Maxim's foundry partner. While fully functional and available through legacy channels, Maxim advises new designs use alternatives like MAX6126AASA21 for improved specs and long-term supply assurance-ICL8069DCSA remains viable for existing production and repair.
ICL8069DCSA 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL8069DCSA FAQ
1.How can I place an order for ICL8069DCSA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL8069DCSA 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 ICL8069DCSA reliable?
The price and inventory of ICL8069DCSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL8069DCSA is usually 5 days.
3.What payment methods are accepted for ICL8069DCSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL8069DCSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL8069DCSA?
ICL8069DCSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL8069DCSA 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 ICL8069DCSA?
For technical support, including ICL8069DCSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL8069DCSA requirements.
6.How does Aetrix verify that ICL8069DCSA is sourced from the original manufacturer or authorized distributors?
All ICL8069DCSA 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 ICL8069DCSA meets industry standards.
7.What is the process for return or replacement of ICL8069DCSA?
All ICL8069DCSA units undergo pre-shipment inspection (PSI). If there is an issue with ICL8069DCSA, 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 ICL8069DCSA part is unused and in its original packaging.
Return procedure for ICL8069DCSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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