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Analog Devices Inc./Maxim Integrated ICL8069DCZQ
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- Part No.:
- ICL8069DCZQ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-226-2, TO-92-2 (TO-226AC)
- Datasheet:
-
ICL8069DCZQ.pdf
- Description:
- IC VREF SHUNT 1.626% TO92
- Quantity:
- Payment:
- Shipping:
Inventory:4,202
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Product details
Overview
ICL8069DCZQ from Maxim Integrated is a 1.2V temperature-compensated bandgap voltage reference in TO-92 package, specified for 0°C to +70°C operation, with guaranteed 10ppm/°C max temperature coefficient, 50µA minimum reverse current, and 5µV RMS noise (10Hz–10kHz). It serves as a stable low-voltage reference in precision analog signal chains.
For engineers reviewing the ICL8069DCZQ datasheet, ICL8069DCZQ pinout, ICL8069DCZQ application, or ICL8069DCZQ equivalent, key selection considerations include its TO-92 mechanical form factor, 1.2V output stability under low-current biasing (50µA–5mA), reverse-voltage-limited operation, and qualification for commercial-temperature portable instrumentation.
Technical Context
The ICL8069DCZQ implements a two-terminal bandgap reference architecture optimized for low-voltage (1.2V) operation and minimal dynamic impedance. It achieves thermal stability via curvature-compensated bandgap core design and requires no external components for basic functionality-though a 4.7µF shunt capacitor is recommended if stray capacitance exceeds 200pF.
Its electrical behavior is defined under reverse-bias configuration: cathode connected to higher potential, anode to lower potential. Output voltage variation is characterized across reverse current (50µA–5mA) and temperature (0°C to +70°C), with worst-case TC binned per grade (D-grade = 10ppm/°C max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.20V to 1.25V at 500µA reverse current - defines usable reference level for 1.2V-system ADCs/DACs |
| Tempco (Max) | 10ppm/°C - ensures ≤125µV drift over 0°C to +70°C range |
| Reverse Current Range | 50µA to 5mA - enables ultra-low-power biasing without oscillation |
| RMS Noise (10Hz–10kHz) | 5µV - supports 16-bit+ resolution in precision converters |
| Dynamic Impedance | 1Ω - maintains regulation stability under fast load transients |
| Operating Temp Range | 0°C to +70°C - qualified for commercial-grade portable and industrial control applications |
| Package | TO-92 - through-hole, low-cost, hand-solderable form factor with 3-pin terminal layout |
Pinout & Package
ICL8069DCZQ is housed in a standard TO-92 plastic package with three leads. Pin 1 is Anode, Pin 2 is Cathode, and Pin 3 is No Connect (N.C.). The device operates in reverse-bias mode: Cathode must be held at higher potential than Anode to establish regulated 1.2V drop.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Reference output node | Connected to system ground or low-side reference point; voltage at this pin is 1.2V below cathode potential |
| Pin 2 (Cathode) | Input supply node | Connected to positive rail; reverse current flows from cathode to anode to enable regulation |
| Pin 3 (N.C.) | Unused terminal | No internal connection; must remain unconnected or grounded per layout best practice to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 10ppm/°C tempco | Enables high-accuracy voltage scaling without calibration over commercial temperature range |
| 50µA minimum reverse current | Supports battery-powered systems where quiescent current must stay below 100µA |
| Low 1Ω dynamic impedance | Minimizes output droop during transient loading in multiplexed ADC sampling |
| Stable operation without external capacitor (≤200pF strays) | Reduces BOM count and PCB area in space-constrained portable instruments |
| TO-92 mechanical compatibility | Allows direct replacement of legacy references like LM385-1.2 in existing through-hole designs |
Applications
| Portable Digital Multimeters | Analog Front-Ends for Low-Power Sensors |
|---|---|
Use Scenario: Battery-operated handheld DMM requiring stable 1.2V reference for 3½-digit ADC conversion. IC Role / Device Role / Timing Role: Two-terminal voltage reference providing excitation and scaling reference for ICL7107-based DPM circuitry. Use Value: 10ppm/°C tempco and 5µV noise ensure <±0.01% full-scale accuracy across operating temperature without trimming. | Use Scenario: Wireless environmental sensor node with microamp-level sleep current budget. IC Role / Device Role / Timing Role: Precision low-voltage reference for sigma-delta ADC biasing and sensor excitation. Use Value: 50µA reverse current capability enables reference operation while maintaining sub-100µA system standby current. |
| Industrial Threshold Detectors | Low-Cost Voltage Regulator Feedback |
Use Scenario: Overvoltage protection circuit monitoring 12V rail with ±1% trip threshold. IC Role / Device Role / Timing Role: Stable reference input to comparator driving latch or shutdown logic. Use Value: 1.2V output allows precise resistor-divider scaling to target thresholds; low dynamic impedance prevents comparator hysteresis shift. | Use Scenario: Feedback node in adjustable linear regulator targeting 1.8V output. IC Role / Device Role / Timing Role: Reference element in resistive divider network setting output voltage. Use Value: Guaranteed 1.20V–1.25V tolerance simplifies resistor selection; TO-92 mounting eases manual rework in low-volume production. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM385BZ-1.2 | Same 1.2V output, 20ppm/°C max tempco, TO-92 package, but requires ≥100µA reverse current | Higher minimum bias current limits use in ultra-low-power sleep modes | Select when cost sensitivity outweighs tempco or quiescent current requirements |
| REF1912AIDBZR | 1.2V output, 10ppm/°C max, SOT-23-3 package, 60µA typical quiescent current | SMT-only footprint; lacks TO-92 mechanical compatibility | Choose for new designs prioritizing board space and modern assembly, not legacy through-hole replacement |
Compared with LM385BZ-1.2 and REF1912AIDBZR, the ICL8069DCZQ uniquely combines TO-92 packaging, 10ppm/°C tempco, and 50µA minimum reverse current-making it suitable for legacy-replacement scenarios where low-bias stability and through-hole serviceability are critical.
Availability
ICL8069DCZQ is available at Aetrix Electronics and suitable for portable instrumentation, analog front-ends, and industrial threshold detection requiring stable component supply and long-term obsolescence management.
Supply support for ICL8069DCZQ 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 ICL8069 series belongs to Maxim's legacy voltage reference product line, engineered specifically for low-voltage, low-power, and high-stability applications in portable and battery-operated equipment.
FAQ
What is the operating mode of the ICL8069DCZQ?
The ICL8069DCZQ operates as a two-terminal, reverse-biased bandgap voltage reference. Cathode must be biased at a higher potential than the anode to establish the 1.2V reference drop. It draws reverse current (50µA to 5mA) between these terminals and delivers a stable output voltage referenced to the anode node. This mode eliminates need for separate supply pins or enable controls.
Is the ICL8069DCZQ still in active production?
No-the ICL8069DCZQ is Not Recommended for New Designs due to discontinuation of its wafer fabrication process. Maxim states the part was manufactured by an outside foundry using an obsolete process. While limited inventory may exist, Aetrix Electronics provides traceable, verified stock with full lifecycle support documentation for legacy system maintenance and repair.
What is the maximum reverse voltage the ICL8069DCZQ can withstand?
The ICL8069DCZQ has an absolute maximum reverse voltage rating of 20V, though normal operation restricts reverse voltage to ≤1.25V (the reference output). Exceeding 1.25V risks regulation loss; transient spikes up to 20V are survivable only if duration is brief and energy limited-as may occur during hot-plug into powered fixtures.
Can the ICL8069DCZQ replace the LM385-1.2 in existing designs?
Yes-the ICL8069DCZQ shares TO-92 packaging, 1.2V nominal output, and reverse-bias operation with the LM385-1.2. However, the ICL8069DCZQ offers tighter 10ppm/°C tempco (vs. 20ppm/°C) and lower 50µA minimum current (vs. 100µA), enabling improved accuracy and lower power use. Pin-for-pin compatibility is confirmed by identical lead assignments (Anode–Cathode–N.C.).
Does the ICL8069DCZQ require an external capacitor for stability?
A 4.7µF shunt capacitor is recommended only if circuit strays exceed 200pF, per Maxim's datasheet Note 2. Under typical conditions (<200pF), the ICL8069DCZQ remains stable without external capacitance. This simplifies layout in compact portable instruments and avoids capacitor aging or ESR-related drift in long-life deployments.
ICL8069DCZQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-226-2, TO-92-2 (TO-226AC)
- Series:
- -
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- TO-92
ICL8069DCZQ FAQ
1.How can I place an order for ICL8069DCZQ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL8069DCZQ 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 ICL8069DCZQ reliable?
The price and inventory of ICL8069DCZQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL8069DCZQ is usually 5 days.
3.What payment methods are accepted for ICL8069DCZQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL8069DCZQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL8069DCZQ?
ICL8069DCZQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL8069DCZQ 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 ICL8069DCZQ?
For technical support, including ICL8069DCZQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL8069DCZQ requirements.
6.How does Aetrix verify that ICL8069DCZQ is sourced from the original manufacturer or authorized distributors?
All ICL8069DCZQ 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 ICL8069DCZQ meets industry standards.
7.What is the process for return or replacement of ICL8069DCZQ?
All ICL8069DCZQ units undergo pre-shipment inspection (PSI). If there is an issue with ICL8069DCZQ, 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 ICL8069DCZQ part is unused and in its original packaging.
Return procedure for ICL8069DCZQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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