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Analog Devices Inc. LTC6655BHLS8-4.096
- Part No.:
- LTC6655BHLS8-4.096
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
LTC6655BHLS8-4.096.pdf
- Description:
- IC VREF SERIES 0.025% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,832
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Product details
Overview
LTC6655BHLS8-4.096 from Analog Devices is a precision bandgap voltage reference delivering 4.096V output with ±0.025% initial accuracy, <2ppm/°C temperature drift, and ultra-low 0.25ppmP-P (0.1Hz–10Hz) noise - enabling high-resolution 16-bit+ data acquisition in instrumentation, weigh scales, and medical equipment.
For engineers reviewing the LTC6655BHLS8-4.096 datasheet, LTC6655BHLS8-4.096 pinout, LTC6655BHLS8-4.096 application, or LTC6655BHLS8-4.096 equivalent, key selection criteria include hermetic LS8 package stability, dual-force/sense output architecture, ±5mA load drive, 500mV dropout, and –40°C to 125°C operation without calibration.
Technical Context
The LTC6655BHLS8-4.096 implements curvature-compensated bandgap topology with separate force (VOUT_F) and sense (VOUT_S) outputs to eliminate trace resistance errors under load. Its internal 2mA sense current enables precise remote sensing up to ±5mA sourcing/sinking capability.
Operating from VIN = VOUT + 0.5V (min) to 13.2V, it achieves <10ppm/mA load regulation and >100dB line rejection. The shutdown mode reduces supply current to <20µA while maintaining full thermal hysteresis spec (30ppm over –40°C to 85°C) in the hermetic 5mm × 5mm LS8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.025% - matches standard 16-bit DAC/ADC full-scale reference for zero-gain error calibration. |
| Tempco | ≤2ppm/°C max - ensures <±80ppm total drift over –40°C to 125°C, eliminating system-level temperature compensation. |
| Low-Freq Noise | 0.25ppmP-P (0.1Hz–10Hz) - translates to 1.02µVP-P, critical for sub-20-bit resolution measurements. |
| Long-Term Drift | 20ppm/√kHr (LS8) - predicts only ~60ppm drift after 9,000 hours, supporting 10+ year metrology-grade deployments. |
| Load Regulation | <10ppm/mA (sourcing), <20ppm/mA (sinking) - maintains accuracy across dynamic loads in battery monitor and regulator feedback paths. |
| Dropout Voltage | 500mV - allows operation from 4.6V supply in 5V systems, minimizing power loss in low-noise LDO stages. |
| Shutdown Current | <20µA - enables µA-level sleep modes in portable test equipment without sacrificing wake-up stability. |
Pinout & Package
Package: 8-lead ceramic LCC (LS8), 5mm × 5mm, hermetic, surface-mount. Designed for ultra-stable environments with no humidity sensitivity and 30ppm thermal hysteresis (–40°C to 85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SHDN | Active-low shutdown control | Pull to GND for <20µA standby; internal pull-up enables default operation; external pull-high recommended for noise immunity. |
| 2: VIN | Power input | Accepts 4.596V–13.2V; requires ≥0.1µF local bypass to suppress supply noise coupling into reference output. |
| 3, 5, 8: GND | Internal ground terminals | All must be connected to clean system ground plane; pins 3/5/8 provide low-inductance return paths for analog and digital sections. |
| 4: GND | Main device ground | Primary ground reference; connects directly to PCB ground plane - routing priority over other GND pins. |
| 6: VOUT_S | Sense input | Connects at load point to cancel trace IR drop; sinks fixed 2mA - error = Rtrace × 2mA regardless of load current. |
| 7: VOUT_F | Force output | Sources/sinks ±5mA; drives output capacitor (2.7–100µF); requires low-ESR film or X7R cap for stability and low noise. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic LS8 packaging | Eliminates humidity-induced drift (0ppm RH sensitivity) and reduces long-term drift to 20ppm/√kHr vs. 60ppm/√kHr in MSOP. |
| Dual-force/sense outputs | VOUT_F/VOUT_S architecture removes PCB trace resistance error - critical for remote-sensing in high-precision regulators. |
| Ultra-low 0.25ppmP-P noise | Enables true 16-bit+ effective resolution in DC-coupled instrumentation without post-filtering or averaging. |
| Full-temp-range characterization | 100% tested at –40°C, 25°C, and 125°C - guarantees specs across automotive and industrial operating envelopes. |
| Bi-directional load drive | ±5mA sourcing/sinking supports active load regulation, programmable biasing, and fault-tolerant feedback loops. |
Applications
| Instrumentation Calibration | Weigh Scale Front-End |
|---|---|
|
Use Scenario: High-accuracy bench multimeters and calibrators requiring stable 4.096V reference for 16-bit DACs and sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute measurement scale; feeds ADC reference input and DAC output buffer. Use Value: 0.25ppmP-P noise and 2ppm/°C drift ensure <±1 LSB error over full temperature range without recalibration. |
Use Scenario: Precision load-cell signal conditioning in industrial weighing systems where microvolt-level bridge excitation stability determines resolution. IC Role / Device Role / Timing Role: Excitation reference for Wheatstone bridge; supplies stable 4.096V to bridge and ADC reference simultaneously. Use Value: Dual-force/sense outputs compensate for PCB trace resistance, maintaining <0.001% linearity despite 100mΩ copper traces. |
| Battery Management Unit | Medical Patient Monitor |
|
Use Scenario: Cell-voltage monitoring in EV battery packs where 4.096V reference enables accurate 1mV-per-cell resolution across 100+ series cells. IC Role / Device Role / Timing Role: Reference for multi-channel SAR ADC measuring individual cell voltages; operates continuously at 85°C ambient. Use Value: LS8 package's 30ppm hysteresis and 20ppm/√kHr long-term drift prevent drift-induced false SOC alarms over 10-year service life. |
Use Scenario: ECG and EEG front-end amplifiers requiring ultra-low-noise, drift-free reference for biopotential signal digitization. IC Role / Device Role / Timing Role: Reference for 24-bit delta-sigma ADC sampling bio-signals; powered from isolated 5V rail with shutdown during idle periods. Use Value: <20µA shutdown current extends battery runtime; 0.25ppmP-P noise avoids masking sub-µV physiological signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4540BRTZ-REEL7 | 4.096V, ±0.02% initial accuracy, 3ppm/°C max drift, 1.2µVP-P (0.1–10Hz), SOIC-8 package | Higher noise (4.8×) and plastic package limits hysteresis performance (100ppm vs. 30ppm) | Select when cost sensitivity outweighs ultra-low-noise or hermetic stability requirements. |
| REF5040IDR | 4.096V, ±0.05% initial accuracy, 3ppm/°C max drift, 1.5µVP-P (0.1–10Hz), SOIC-8 | Looser initial tolerance and higher noise (6×); no shutdown mode; not specified beyond 85°C | Choose for non-critical industrial applications where extended temperature range and shutdown are unnecessary. |
Compared with ADR4540BRTZ-REEL7 and REF5040IDR, the LTC6655BHLS8-4.096 delivers superior long-term stability (20ppm/√kHr vs. 50ppm/√kHr), hermetic reliability in humid environments, and integrated shutdown - making it optimal for metrology, aerospace, and medical systems demanding 15+ year calibration intervals.
Availability
LTC6655BHLS8-4.096 is available at Aetrix Electronics and suitable for instrumentation calibration, precision battery monitors, and medical patient monitors requiring stable component supply across extended temperature and lifetime requirements.
Supply support for LTC6655BHLS8-4.096 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 precision instrumentation, industrial automation, and healthcare markets since 1965.
The LTC6655 family was designed specifically for metrology-grade voltage references - emphasizing ultra-low noise, hermetic stability, and full-temperature-range validation to replace traditional buried-zener solutions in next-generation test equipment.
FAQ
What is the maximum operating temperature for the LTC6655BHLS8-4.096?
The LTC6655BHLS8-4.096 is fully specified and 100% tested over –40°C to 125°C. Its hermetic LS8 package maintains rated performance at 125°C ambient, with junction temperature limited to 150°C. This makes LTC6655BHLS8-4.096 suitable for under-hood automotive and industrial control applications where extended temperature operation is mandatory.
Does the LTC6655BHLS8-4.096 require an external output capacitor?
Yes, the LTC6655BHLS8-4.096 requires an output capacitor between 2.7µF and 100µF on the VOUT_F pin for stability, transient response, and noise filtering. A low-ESR film or X7R ceramic capacitor is recommended; ESR must be ≤0.1Ω at 100kHz. Omitting or undersizing this capacitor risks oscillation and degraded noise performance in the LTC6655BHLS8-4.096.
How does the dual-output (VOUT_F/VOUT_S) architecture improve accuracy in the LTC6655BHLS8-4.096?
The LTC6655BHLS8-4.096 uses VOUT_F to deliver current to the load and VOUT_S to sense voltage at the remote load point. Since VOUT_S sinks a fixed 2mA, trace resistance error equals Rtrace × 2mA - independent of load current. This eliminates line-drop errors in precision regulators and data acquisition systems, ensuring the LTC6655BHLS8-4.096 maintains ±0.025% accuracy even with 100mΩ PCB traces.
Can the LTC6655BHLS8-4.096 be used with a 3.3V supply?
No - the LTC6655BHLS8-4.096 requires minimum input voltage of VOUT + 0.5V = 4.596V. A 3.3V supply is insufficient. It operates from 4.596V to 13.2V. For 3.3V systems, consider the LTC6655BHMS8-3.3 or LTC6655BHMS8-2.5 variants instead of the LTC6655BHLS8-4.096.
What is the long-term drift specification for the LTC6655BHLS8-4.096, and how is it measured?
The LTC6655BHLS8-4.096 exhibits 20ppm/√kHr long-term drift in its hermetic LS8 package, measured empirically over 3,000+ hours on soldered units in 35°C ovens using 8.5-digit DVMs. This value reflects real-world aging - not accelerated testing - and predicts ~60ppm total drift after 9,000 hours, confirming LTC6655BHLS8-4.096 suitability for 10-year metrology deployments.
LTC6655BHLS8-4.096 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CLCC
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.025%
- Temperature Coefficient:
- 2ppm/°C
- Noise - 0.1Hz to 10Hz:
- 0.25ppmp-p
- Noise - 10Hz to 10kHz:
- 0.67ppmrms
- Voltage - Input:
- 13.2V
- Current - Supply:
- 7.5mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
LTC6655BHLS8-4.096 FAQ
1.How can I place an order for LTC6655BHLS8-4.096 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6655BHLS8-4.096 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 LTC6655BHLS8-4.096 reliable?
The price and inventory of LTC6655BHLS8-4.096 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6655BHLS8-4.096 is usually 5 days.
3.What payment methods are accepted for LTC6655BHLS8-4.096?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6655BHLS8-4.096 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6655BHLS8-4.096?
LTC6655BHLS8-4.096 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6655BHLS8-4.096 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 LTC6655BHLS8-4.096?
For technical support, including LTC6655BHLS8-4.096 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6655BHLS8-4.096 requirements.
6.How does Aetrix verify that LTC6655BHLS8-4.096 is sourced from the original manufacturer or authorized distributors?
All LTC6655BHLS8-4.096 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 LTC6655BHLS8-4.096 meets industry standards.
7.What is the process for return or replacement of LTC6655BHLS8-4.096?
All LTC6655BHLS8-4.096 units undergo pre-shipment inspection (PSI). If there is an issue with LTC6655BHLS8-4.096, 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 LTC6655BHLS8-4.096 part is unused and in its original packaging.
Return procedure for LTC6655BHLS8-4.096:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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