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Analog Devices Inc./Maxim Integrated ICL8069BCSA
- Part No.:
- ICL8069BCSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL8069BCSA.pdf
- Description:
- IC VREF SHUNT 1.626% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,288
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Product details
Overview
ICL8069BCSA from Maxim Integrated is a 1.2V temperature-compensated bandgap voltage reference IC designed for precision analog signal conditioning and low-voltage regulation. It delivers guaranteed 10ppm/°C max temperature coefficient, 1.20V to 1.25V output voltage at 500µA reverse current, and operates over 0°C to +70°C in an 8-pin SO package. Used in ADC/DAC reference rails and portable instrument power management.
For engineers reviewing the ICL8069BCSA datasheet, ICL8069BCSA pinout, ICL8069BCSA application, or ICL8069BCSA equivalent, key selection criteria include low 50µA minimum bias current, low dynamic impedance, reverse-current–dependent output stability, and SO-8 compatibility with legacy industrial and test equipment designs.
Technical Context
The ICL8069BCSA implements a two-terminal, cathode-anode configured bandgap reference topology optimized for low-voltage (1.2V) operation. Its internal architecture achieves thermal compensation without external components and maintains stability down to 50µA reverse current, with dynamic impedance under 1Ω.
It requires no external capacitor for stability below 200pF stray capacitance but recommends a 4.7µF shunt capacitor when strays exceed that threshold. Output voltage exhibits monotonic variation across -55°C to +125°C, with worst-case TC classified per sample-tested 0.1% AQL screening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.20V to 1.25V at IR = 500µA - sets precise low-voltage reference rail for 1.2V–1.25V system compliance |
| Tempco | ≤10ppm/°C max - ensures ≤125µV drift over 0°C to +70°C operating range |
| Reverse Current Range | 50µA to 5mA - enables ultra-low-power operation while maintaining regulation integrity |
| RMS Noise (10Hz–10kHz) | 5µV - supports high-resolution ADCs (e.g., 16-bit+) without added filtering |
| Dynamic Impedance | <1Ω - minimizes load-induced output sag during transient current steps |
| Forward Voltage Drop | 0.6V to 1.0V - defines minimum headroom needed when used in forward-biased configurations |
| Operating Temp Range | 0°C to +70°C - qualified for commercial-grade instrumentation and embedded control |
Pinout & Package
ICL8069BCSA is housed in an 8-pin Small Outline (SO) package per MS012 outline, 3.94mm × 4.90mm body, 1.27mm pitch. Pin 1 is ANODE; Pin 8 is CATHODE; Pins 2–7 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (ANODE) | Anode terminal | Connects to lower-potential node (e.g., ground or negative rail); reverse-biased operation requires current sink into this pin |
| Pin 8 (CATHODE) | Cathode terminal | Provides regulated 1.2V output; must be connected to load or feedback network; reverse current flows from cathode to anode |
| Pins 2–7 (N.C.) | No connection | Internally unconnected; must remain floating-no routing or grounding permitted |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 10ppm/°C tempco | Enables stable reference performance in unregulated ambient environments without ovenization or calibration |
| 50µA minimum bias current | Supports battery-powered systems where quiescent current must stay below 100µA |
| Low dynamic impedance (<1Ω) | Prevents output droop during fast load transients typical in multiplexed ADC sampling |
| Stable down to 50µA reverse current | Allows use with high-value series resistors (e.g., 100kΩ) for ultra-low-power biasing |
| SO-8 footprint with N.C. pins | Facilitates drop-in replacement in legacy layouts without PCB redesign or trace modification |
Applications
| Analog-to-Digital Converters | Digital-to-Analog Converters |
|---|---|
Use Scenario: Reference input for 12–16-bit SAR or sigma-delta ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Provides stable 1.2V full-scale reference voltage for ADC conversion accuracy. Use Value: 10ppm/°C tempco limits gain error drift to <0.02% over 0°C–70°C, preserving ENOB. | Use Scenario: Precision output scaling in DAC-based programmable voltage sources. IC Role / Device Role / Timing Role: Sets accurate zero- and full-scale voltage boundaries for DAC output buffers. Use Value: Low 5µV RMS noise prevents LSB uncertainty in 16-bit DAC output resolution. |
| Threshold Detectors | Portable Instruments |
Use Scenario: Comparator reference in battery-monitoring circuits detecting 1.2V cutoff thresholds. IC Role / Device Role / Timing Role: Supplies stable trip point independent of supply voltage variation. Use Value: Reverse-current–invariant output ensures consistent detection across 50µA–5mA bias range. | Use Scenario: Power-rail reference in handheld multimeters and portable oscilloscopes. IC Role / Device Role / Timing Role: Stabilizes internal ADC and display driver references under varying battery discharge profiles. Use Value: 0.6V forward drop allows direct connection to Li-ion cells (3.0–4.2V) via simple resistor biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA21 | 1.21V output, 3ppm/°C max tempco, 50µA min supply current, SO-8 | Higher precision and tighter tempco; requires external decoupling cap for stability | Preferred for new designs requiring improved accuracy and long-term drift performance |
| REF191GS | 1.25V output, 25ppm/°C max tempco, 100µA min supply current, SO-8 | Higher output voltage and relaxed tempco; wider operating temperature range (−40°C to +125°C) | Suitable when 1.25V reference level and extended temperature support are acceptable trade-offs |
Compared with ICL8069BCSA, MAX6126AASA21 offers superior accuracy and stability at higher cost, while REF191GS trades tempco and voltage for broader environmental tolerance and availability-both require validation for existing layout compatibility.
Availability
ICL8069BCSA is available at Aetrix Electronics and suitable for analog-to-digital converters, portable instrumentation, and threshold detector circuits requiring stable component supply despite end-of-life status.
Supply support for ICL8069BCSA 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, communications, and computing applications.
The ICL8069BCSA belongs to Maxim's legacy low-voltage reference product line, engineered specifically for 1.2V bandgap stability in space-constrained, low-power measurement systems.
FAQ
What is the output voltage tolerance of the ICL8069BCSA?
The ICL8069BCSA delivers an output voltage of 1.20V to 1.25V at 500µA reverse current and +25°C. This 50mV span reflects factory-trimmed performance across the B-grade temperature coefficient classification. The ICL8069BCSA maintains this range across its 0°C to +70°C operating envelope, with worst-case deviation bounded by its 10ppm/°C tempco specification.
Is the ICL8069BCSA pin-compatible with other ICL8069 variants?
Yes-the ICL8069BCSA shares identical SO-8 pinout and terminal assignments (ANODE at Pin 1, CATHODE at Pin 8, N.C. on Pins 2–7) with all SO-packaged ICL8069 variants including ICL8069CCSA and ICL8069DCSA. However, electrical grades differ: ICL8069BCSA has 10ppm/°C max tempco, while ICL8069CCSA is rated at 25ppm/°C and ICL8069DCSA at 50ppm/°C.
Can the ICL8069BCSA operate with less than 50µA reverse current?
No-the ICL8069BCSA is not specified or guaranteed to regulate below 50µA reverse current. Electrical characteristics-including output voltage accuracy and tempco-apply only within the 50µA to 5mA reverse current range. Operation below 50µA may result in unregulated output or increased sensitivity to noise and temperature, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the ICL8069BCSA datasheet.
Why does the ICL8069BCSA datasheet state "Not Recommended for New Designs"?
The ICL8069BCSA is marked "Not Recommended for New Designs" because its fabrication process at an external wafer foundry has been discontinued. Maxim no longer manufactures the device using the original process, and long-term supply continuity cannot be assured. While existing stock remains available through authorized channels like Aetrix Electronics, new designs should consider validated alternatives such as MAX6126AASA21 or REF191GS.
Does the ICL8069BCSA require an external capacitor for stability?
The ICL8069BCSA remains stable without external capacitance when circuit strays are ≤200pF. If stray capacitance exceeds 200pF-common in prototyping breadboards or long PCB traces-a 4.7µF tantalum or ceramic capacitor must be placed directly across the cathode and anode terminals. This requirement is explicitly documented in Note 2 of the ICL8069BCSA datasheet and verified in typical operating characteristic curves.
ICL8069BCSA 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:
- 25ppm/°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
ICL8069BCSA FAQ
1.How can I place an order for ICL8069BCSA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL8069BCSA 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 ICL8069BCSA reliable?
The price and inventory of ICL8069BCSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL8069BCSA is usually 5 days.
3.What payment methods are accepted for ICL8069BCSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL8069BCSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL8069BCSA?
ICL8069BCSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL8069BCSA 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 ICL8069BCSA?
For technical support, including ICL8069BCSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL8069BCSA requirements.
6.How does Aetrix verify that ICL8069BCSA is sourced from the original manufacturer or authorized distributors?
All ICL8069BCSA 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 ICL8069BCSA meets industry standards.
7.What is the process for return or replacement of ICL8069BCSA?
All ICL8069BCSA units undergo pre-shipment inspection (PSI). If there is an issue with ICL8069BCSA, 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 ICL8069BCSA part is unused and in its original packaging.
Return procedure for ICL8069BCSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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