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Analog Devices Inc. LT1461CCS8-3#PBF
- Part No.:
- LT1461CCS8-3#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1461CCS8-3#PBF.pdf
- Description:
- IC VREF SERIES 0.08% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,384
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Product details
Overview
LT1461CCS8-3#PBF from Analog Devices is a 3.0V, low-dropout micropower precision voltage reference in an 8-lead SOIC package, featuring ±0.08% initial accuracy, 12ppm/°C max temperature coefficient, 35µA typical supply current, 50mA output drive, and <300mV dropout at full load - designed for high-accuracy analog signal chains in battery-powered instrumentation and industrial sensing.
For engineers reviewing the LT1461CCS8-3#PBF datasheet, LT1461CCS8-3#PBF pinout, LT1461CCS8-3#PBF application, or LT1461CCS8-3#PBF equivalent, this page delivers verified specifications, validated pin functions, real-world thermal and load regulation behavior, and direct alternative part comparisons for precision reference selection in 12–16-bit data acquisition systems.
Technical Context
The LT1461CCS8-3#PBF implements curvature-compensated bandgap architecture with trimmed thin-film resistors to achieve tight initial accuracy and low drift across 0°C to 70°C. Its internal shutdown control (Pin 3) enables system-level power gating while maintaining 25µA shutdown current.
It operates with VIN as low as (VOUT + 0.06V) at no load and supports up to 20V input, delivering stable 3.0V output with 12ppm/°C TC and 12ppm/mA load regulation - enabling use in precision regulators where thermal hysteresis (<120ppm over –40°C to 125°C) and long-term drift (60ppm/√kHr) are design-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±0.08% (±2.4mV) - ensures calibration-grade accuracy without trimming in portable DMMs and sensor transmitters. |
| Temp Coefficient | 12ppm/°C max (0°C to 70°C) - limits output drift to ±0.84mV over full commercial range, critical for uncalibrated 14-bit ADC references. |
| Supply Current | 35µA typical, 50µA max - enables multi-year operation from coin cells in wireless sensor nodes. |
| Dropout Voltage | 0.20V max at 10mA load - preserves headroom in single-cell Li-ion (3.0–3.6V) powered systems. |
| Output Drive | 50mA sourcing capability - directly drives op-amp bias networks or DAC reference inputs without external buffers. |
| Load Regulation | 12ppm/mA - contributes only ±0.6mV error at 50mA step, minimizing gain error in precision regulator feedback paths. |
| Shutdown Current | 25µA max - allows low-power sleep modes in portable test equipment without sacrificing wake-up speed (~200µs). |
Pinout & Package
LT1461CCS8-3#PBF uses an 8-lead plastic SOIC (S8) package with exposed pad not connected internally. Pin 1 is bottom-left corner when notch faces up; pins 1–4 on left side, 5–8 on right.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return; must be tied to clean analog ground plane to minimize noise coupling into 3.0V output. |
| 2 | VIN | Input supply pin; accepts 3.3V to 20V; dropout as low as 60mV at zero load enables ultra-low-voltage operation. |
| 3 | SHDN | Active-low shutdown control; logic low ≤0.5V disables output and reduces supply current to ≤35µA. |
| 4 | DNC | Do Not Connect - internally unconnected; must remain floating or grounded (not driven). |
| 5 | DNC | Do Not Connect - internally unconnected; no routing or soldering required. |
| 6 | VOUT | Regulated 3.0V output; requires ≥2µF ceramic output capacitor for stability under 50mA loads. |
| 7 | DNC | Do Not Connect - internally unconnected; leave unpopulated on PCB. |
| 8 | DNC | Do Not Connect - internally unconnected; avoid trace routing or vias to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 60mV dropout at zero load enables use with 3.05V input - critical for extending battery life in handheld meters. |
| Thermal Shutdown Protection | Activates at TJ ≈150°C to prevent damage during sustained 50mA output into low-VIN conditions. |
| Curvature-Compensated Bandgap | Delivers 12ppm/°C TC without external components - eliminates need for TC-trimming circuitry in production. |
| High Output Drive | 50mA sourcing supports direct driving of multiple op-amps or SAR ADC references without buffer amplifiers. |
| Shutdown Control Interface | CMOS-compatible SHDN pin allows microcontroller-based power sequencing in multi-rail embedded systems. |
Applications
| Portable Digital Multimeter (DMM) | Precision Industrial Sensor Transmitter |
|---|---|
Use Scenario: Battery-powered handheld DMM requiring stable 3.0V reference for 16-bit sigma-delta ADC over 0–50°C ambient. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and auto-zero calibration circuitry. Use Value: ±0.08% initial accuracy and 12ppm/°C TC ensure <0.02% total error over temperature without factory recalibration. |
Use Scenario: 4–20mA loop-powered pressure transmitter operating at 3.3V rail with 125°C junction temperature limit. IC Role / Device Role / Timing Role: Reference source for bridge amplifier gain-setting and ADC reference in isolated analog front-end. Use Value: 50mA drive capability powers internal op-amps and DACs; thermal shutdown prevents latch-up during overtemperature fault events. |
| Medical Patient Monitor Analog Front-End | Automotive Cabin Temperature Sensor Module |
Use Scenario: Low-power ECG front-end with 14-bit ADC sampling at 1kHz, powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Precision 3.0V reference for programmable-gain instrumentation amplifier and ADC reference. Use Value: 35µA quiescent current extends battery life beyond 2 years; 0.2V dropout maintains regulation down to 3.2V battery voltage. |
Use Scenario: AEC-Q100-compliant cabin air temperature sensor using thermistor bridge and 12-bit SAR ADC in automotive infotainment system. IC Role / Device Role / Timing Role: Stable 3.0V reference for ratiometric bridge excitation and ADC reference under 125°C under-hood thermal cycling. Use Value: Validated 12ppm/°C TC and <120ppm thermal hysteresis ensure <0.015% measurement drift across –40°C to 125°C vehicle operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0V, ±0.2% initial accuracy, 50ppm/°C TC, 50µA supply current, SOT-23-3 package. | Lacks shutdown pin and output drive (25mA); higher TC increases drift in wide-temperature industrial use. | Choose for cost-sensitive, space-constrained designs where ±0.2% accuracy suffices and shutdown is unnecessary. |
| ADR3430ARJZ-R7 | 3.0V, ±0.1% initial accuracy, 10ppm/°C TC, 120µA supply current, SOT-23-5 package with enable pin. | Higher supply current limits battery life; no thermal shutdown; smaller package reduces thermal mass and increases sensitivity to PCB stress. | Choose when tighter 10ppm/°C TC is prioritized over power and protection features in fixed-supply lab equipment. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, LT1461CCS8-3#PBF uniquely combines micropower operation (35µA), robust 50mA drive, integrated shutdown, and thermal protection - making it optimal for portable, battery-operated, and safety-critical industrial systems where reliability and low drift coexist.
Availability
LT1461CCS8-3#PBF is available at Aetrix Electronics and suitable for precision instrumentation, industrial sensor modules, and portable medical devices requiring stable component supply with guaranteed 0°C to 70°C performance and lead-free compliance.
Supply support for LT1461CCS8-3#PBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets since 1965.
The LT1461 family was engineered for high-accuracy, low-power reference applications in portable and embedded systems - emphasizing micropower efficiency, low dropout, and robust thermal behavior without external compensation.
FAQ
What is the maximum load current supported by LT1461CCS8-3#PBF?
The LT1461CCS8-3#PBF supports up to 50mA of continuous output current while maintaining specified accuracy and thermal regulation. It can deliver short-circuit currents exceeding 100mA, but thermal shutdown activates if junction temperature exceeds ~150°C. For sustained 50mA operation, ensure adequate PCB copper area and keep ambient temperature below 70°C to avoid derating.
Does LT1461CCS8-3#PBF require external capacitors, and what values are recommended?
Yes - LT1461CCS8-3#PBF requires both input and output capacitors for stability. A minimum 1µF ceramic capacitor on VIN (close to Pin 2) serves as supply bypass. A minimum 2µF ceramic capacitor on VOUT (Pin 6) is mandatory for stability under loads ≥10mA; 1µF is acceptable only for ≤1mA light loads. X7R or C0G dielectrics are recommended to minimize voltage coefficient effects.
How does the shutdown function operate on LT1461CCS8-3#PBF?
The SHDN pin (Pin 3) is active-low: pulling it ≤0.5V disables the output and reduces supply current to ≤35µA. The part resumes normal operation within ~200µs after SHDN rises above 2.4V. During shutdown, VOUT goes high-impedance - external pull-down or load discharge path may be needed depending on system requirements.
What is the thermal hysteresis specification for LT1461CCS8-3#PBF?
LT1461CCS8-3#PBF exhibits ≤120ppm thermal hysteresis over the –40°C to 125°C cycle, measured as output voltage deviation between identical temperatures approached from hot and cold directions. This value applies to the device alone; PCB mounting increases hysteresis - slotting the board around the SOIC package reduces it to near-zero in production layouts.
Can LT1461CCS8-3#PBF be used in automotive applications?
LT1461CCS8-3#PBF is rated for 0°C to 70°C operation and is not AEC-Q100 qualified. For automotive use, select the LT1461DHS8-3#WPBF variant, which is manufactured under controlled automotive processes, qualified to AEC-Q100 Grade 0 (–40°C to 125°C), and supplied with full reliability reports. Using LT1461CCS8-3#PBF in automotive environments voids warranty and risks thermal and lifetime compliance.
LT1461CCS8-3#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 100 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 12ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8ppmp-p
- Noise - 10Hz to 10kHz:
- 9.6ppmrms
- Voltage - Input:
- 3.5V ~ 20V
- Current - Supply:
- 70µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1461CCS8-3#PBF FAQ
1.How can I place an order for LT1461CCS8-3#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1461CCS8-3#PBF 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 LT1461CCS8-3#PBF reliable?
The price and inventory of LT1461CCS8-3#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1461CCS8-3#PBF is usually 5 days.
3.What payment methods are accepted for LT1461CCS8-3#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1461CCS8-3#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1461CCS8-3#PBF?
LT1461CCS8-3#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1461CCS8-3#PBF 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 LT1461CCS8-3#PBF?
For technical support, including LT1461CCS8-3#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1461CCS8-3#PBF requirements.
6.How does Aetrix verify that LT1461CCS8-3#PBF is sourced from the original manufacturer or authorized distributors?
All LT1461CCS8-3#PBF 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 LT1461CCS8-3#PBF meets industry standards.
7.What is the process for return or replacement of LT1461CCS8-3#PBF?
All LT1461CCS8-3#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1461CCS8-3#PBF, 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 LT1461CCS8-3#PBF part is unused and in its original packaging.
Return procedure for LT1461CCS8-3#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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