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Analog Devices Inc. LTC6652AHLS8-5
- Part No.:
- LTC6652AHLS8-5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
LTC6652AHLS8-5.pdf
- Description:
- IC VREF SERIES 0.05% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,162
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Product details
Overview
LTC6652AHLS8-5 from Analog Devices (formerly Linear Technology) is a precision buffered voltage reference IC delivering 5.000V output with ±0.05% initial accuracy, <5ppm/°C temperature drift (A-grade LS8 package), and 2.8ppmP-P low-frequency noise (0.1Hz–10Hz). It operates from 5.3V to 13.2V supply, sinks/sources ±5mA, and is qualified for automotive and high-temperature industrial data acquisition systems.
For engineers reviewing the LTC6652AHLS8-5 datasheet, LTC6652AHLS8-5 pinout, LTC6652AHLS8-5 application, or LTC6652AHLS8-5 equivalent, key selection criteria include hermetic LS8 package stability, thermal hysteresis ≤45ppm over –40°C to 125°C, long-term drift of 20ppm/√kHr, shutdown current <2µA, and compatibility with zero-output-capacitor designs.
Technical Context
The LTC6652AHLS8-5 uses high-order curvature-compensated bandgap architecture to achieve predictable, monotonic temperature behavior across –40°C to 125°C. Its fully buffered output provides ±5mA sourcing/sinking capability without external amplification.
It integrates an active-low shutdown input (SHDN) that reduces quiescent current to <2µA while placing VOUT in high-impedance state (20kΩ × 5V = 100kΩ effective impedance). The LS8 package is a 5mm × 5mm hermetic ceramic LCC, eliminating humidity-induced drift and enabling stable operation in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.05% - Enables 16-bit+ ADC/DAC biasing with sub-LSB error at full scale. |
| Temp Coefficient | ≤5ppm/°C (A-grade LS8) - Guarantees <650ppm total drift over –40°C to 125°C, critical for automotive sensor calibration. |
| Low-Freq Noise | 2.8ppmP-P (0.1Hz–10Hz) - Supports ultra-low-noise instrumentation amplifier front-ends without additional filtering. |
| Load Regulation | ≤200ppm/mA (sourcing), ≤450ppm/mA (sinking) - Maintains accuracy under dynamic load transients up to ±5mA. |
| Shutdown Current | <2µA - Allows battery-powered systems to extend operational life during idle periods without compromising wake-up latency. |
| Long-Term Drift | 20ppm/√kHr (LS8) - Predictable aging behavior supports 10+ year field reliability in medical and test equipment. |
| Thermal Hysteresis | 45ppm (–40°C ↔ 125°C) - Minimizes calibration rework after thermal cycling in embedded control units. |
Pinout & Package
The LTC6652AHLS8-5 is housed in an 8-lead leadless ceramic chip carrier (LS8), 5mm × 5mm surface-mount hermetic package with exposed pad (not electrically connected). This package delivers superior long-term stability and eliminates humidity sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DNC (Pin 1) | Do Not Connect | Unused terminal; must remain floating per datasheet to avoid parametric shift. |
| VIN (Pin 2) | Power Input | Accepts 5.3V–13.2V; requires ≥0.1µF local bypass for optimal PSRR above 10kHz. |
| SHDN (Pin 3) | Active-Low Enable | Logic low (<0.8V) enables shutdown; logic high (≥2.0V) enables regulation; hysteresis prevents shoot-through. |
| GND (Pin 4) | Reference Ground | Main ground return path; all internal circuitry referenced to this node. |
| GND (Pins 5,7,8) | Internal Ground | Must be connected to system GND; improves thermal dissipation and reduces output impedance. |
| VOUT (Pin 6) | Regulated Output | 5.000V buffered source/sink node; stable with 0–10µF capacitive load; no capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic LS8 Package | 5mm × 5mm ceramic LCC eliminates humidity-induced drift and ensures <45ppm thermal hysteresis over full temp range. |
| Zero-Capacitor Operation | Stable without output capacitor - reduces BOM count and PCB area in space-constrained modules like sensor nodes. |
| High Sink/Source Capability | ±5mA drive strength allows direct interface to SAR ADC references, op-amp bias networks, and DAC buffers without external gain stages. |
| Extended Supply Range | Operates down to VIN = VOUT + 300mV (5.3V min) - supports wide-input industrial power rails and battery-backed systems. |
| 100% Temperature-Tested | Characterized at –40°C, 25°C, and 125°C - guarantees performance compliance across full automotive and industrial operating envelope. |
Applications
| Automotive Engine Control Unit (ECU) | High-Resolution Industrial DAQ |
|---|---|
Use Scenario: Precision analog front-end for exhaust gas oxygen sensors and knock detection circuits requiring stable 5V reference under wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary voltage reference for 18-bit sigma-delta ADCs sampling at 10kSPS, providing excitation and scaling for ratiometric measurements. Use Value: ≤5ppm/°C drift and 45ppm thermal hysteresis ensure calibration validity over 15-year vehicle lifetime without field recalibration. | Use Scenario: Reference for modular 24-bit isolated data acquisition modules used in power quality analyzers and grid monitoring systems. IC Role / Device Role / Timing Role: Buffered 5V reference driving multiple successive-approximation ADCs and anti-aliasing filter op-amps on shared PCB. Use Value: ±5mA sourcing/sinking capability eliminates need for discrete buffer stages, reducing component count and thermal mismatch errors. |
| Medical Patient Monitoring | Test & Measurement Equipment |
Use Scenario: ECG and EEG signal conditioning where baseline stability directly impacts diagnostic accuracy in portable bedside monitors. IC Role / Device Role / Timing Role: Low-noise 5V reference for instrumentation amplifiers and programmable gain stages in analog signal chain. Use Value: 2.8ppmP-P (0.1Hz–10Hz) noise ensures <1µV RMS baseline ripple, meeting IEC 60601-2-27 ECG accuracy requirements. | Use Scenario: Calibration reference in benchtop multimeters and automated test equipment requiring traceable, stable 5V output over 8-hour production runs. IC Role / Device Role / Timing Role: Primary reference for internal DACs generating precision stimulus waveforms and for ADC self-calibration routines. Use Value: 20ppm/√kHr long-term drift enables 90-day calibration intervals without degradation in 7½-digit measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, ±0.02% initial accuracy, 3ppm/°C drift, SOIC-8 package (non-hermetic), 1.2µA typical quiescent current. | Lower initial accuracy tolerance but tighter drift spec; lacks shutdown mode and hermetic stability; higher PSRR (120dB vs 100dB). | Preferred when ultra-low drift dominates over long-term stability and shutdown functionality is unnecessary. |
| REF5050IDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C drift, SOIC-8, no shutdown, 950µA quiescent current, 10ppm/√kHr long-term drift. | Higher power consumption, no shutdown, non-hermetic package, better long-term drift but worse thermal hysteresis (100ppm vs 45ppm). | Selected for cost-sensitive industrial DAQ where board-level humidity control exists and continuous operation is required. |
Compared with ADR4550BRZ and REF5050IDR, the LTC6652AHLS8-5 uniquely combines hermetic LS8 packaging, active shutdown (<2µA), and guaranteed 45ppm thermal hysteresis - making it the only option qualified for uncontrolled-humidity automotive and extended-life medical deployments.
Availability
LTC6652AHLS8-5 is available at Aetrix Electronics and suitable for automotive engine control units, high-resolution industrial data acquisition systems, and portable medical patient monitors requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for LTC6652AHLS8-5 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC6652 family was designed by Linear Technology specifically for high-accuracy, high-stability voltage reference applications in automotive, industrial, and medical systems operating from –40°C to 125°C.
FAQ
What is the maximum supply voltage for the LTC6652AHLS8-5?
The LTC6652AHLS8-5 supports a maximum input voltage of 13.2V. Exceeding this rating may cause permanent damage. Absolute maximum VIN is specified as –0.3V to 13.2V relative to GND. Operation above 13.2V violates Absolute Maximum Ratings and risks latch-up or die failure. For robust design, maintain VIN ≤13.0V with margin.
Does the LTC6652AHLS8-5 require an output capacitor?
No, the LTC6652AHLS8-5 is stable without an output capacitor and is explicitly characterized for zero-capacitor operation. An optional 0.1µF to 10µF capacitor may improve transient response for heavy sourcing loads, but adds no benefit for most precision applications and increases PCB area and cost. The LS8 package's inherent stability eliminates need for external compensation.
What is the thermal hysteresis specification for the LTC6652AHLS8-5?
The LTC6652AHLS8-5 exhibits ≤45ppm thermal hysteresis over the full –40°C to 125°C temperature cycle, measured as the difference between VOUT at 25°C after exposure to –40°C versus after exposure to 125°C. This value is guaranteed for the LS8 hermetic package and is significantly lower than the 80ppm typical for MSOP-packaged variants.
Can the LTC6652AHLS8-5 sink and source 5mA simultaneously?
No - the LTC6652AHLS8-5 can source up to +5mA or sink up to –5mA, but not both simultaneously. Its output stage is a single-ended buffered amplifier with bidirectional capability limited to one polarity at a time. Simultaneous sourcing and sinking would require external circuitry such as an op-amp configured as a Howland current source.
What is the long-term drift behavior of the LTC6652AHLS8-5?
The LTC6652AHLS8-5 exhibits 20ppm/√kHr long-term drift in the LS8 package, based on accelerated testing of >100 soldered units at 35°C. This logarithmic aging characteristic means drift slows over time: ~20ppm in first 1000 hours, <7ppm in second 1000 hours. Humidity immunity from hermetic sealing ensures this drift remains predictable and unaffected by environmental moisture.
LTC6652AHLS8-5 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 2ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.8ppmp-p
- Noise - 10Hz to 10kHz:
- 3µVrms
- Voltage - Input:
- 5.3V ~ 13.2V
- Current - Supply:
- 560µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
LTC6652AHLS8-5 FAQ
1.How can I place an order for LTC6652AHLS8-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6652AHLS8-5 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 LTC6652AHLS8-5 reliable?
The price and inventory of LTC6652AHLS8-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6652AHLS8-5 is usually 5 days.
3.What payment methods are accepted for LTC6652AHLS8-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6652AHLS8-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6652AHLS8-5?
LTC6652AHLS8-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6652AHLS8-5 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 LTC6652AHLS8-5?
For technical support, including LTC6652AHLS8-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6652AHLS8-5 requirements.
6.How does Aetrix verify that LTC6652AHLS8-5 is sourced from the original manufacturer or authorized distributors?
All LTC6652AHLS8-5 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 LTC6652AHLS8-5 meets industry standards.
7.What is the process for return or replacement of LTC6652AHLS8-5?
All LTC6652AHLS8-5 units undergo pre-shipment inspection (PSI). If there is an issue with LTC6652AHLS8-5, 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 LTC6652AHLS8-5 part is unused and in its original packaging.
Return procedure for LTC6652AHLS8-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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