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Analog Devices Inc. LTC6652AHMS8-2.048#TRPBF
- Part No.:
- LTC6652AHMS8-2.048#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6652AHMS8-2.048#TRPBF.pdf
- Description:
- IC VREF SERIES 0.05% 8MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC6652AHMS8-2.048#TRPBF from Analog Devices (formerly Linear Technology) is a precision buffered voltage reference IC delivering 2.048V output with ±0.05% initial accuracy, <5ppm/°C temperature drift, and 2.1ppmP-P (0.1Hz–10Hz) low-frequency noise. It operates from 2.7V to 13.2V supply, sinks/sources ±1mA (sourcing up to ±5mA), and features shutdown mode (<2µA). It is used in high-resolution ADC/DAC biasing, automotive sensor signal conditioning, and industrial data acquisition systems requiring stable reference under –40°C to 125°C.
For engineers reviewing the LTC6652AHMS8-2.048#TRPBF datasheet, LTC6652AHMS8-2.048#TRPBF pinout, LTC6652AHMS8-2.048#TRPBF application, or LTC6652AHMS8-2.048#TRPBF equivalent, key selection criteria include guaranteed ±1mA sink capability (vs ±5mA for ≥2.5V variants), MSOP-8 package thermal performance (θJA = 200°C/W), low dropout (300mV), and hermetic LS8 alternative for humidity-sensitive environments.
Technical Context
The LTC6652AHMS8-2.048#TRPBF employs high-order curvature-compensated bandgap architecture to achieve predictable, monotonic temperature behavior across –40°C to 125°C. Its buffered output provides low output impedance (<1Ω at DC) and exceptional line regulation (2ppm/V typical) without requiring external capacitors.
It integrates an active-low shutdown input (SHDN) that reduces quiescent current to <2µA while placing VOUT in high-impedance state (≈20kΩ × 2.048V ≈ 41kΩ). The device is fully tested at –40°C, 25°C, and 125°C, with long-term drift specified at 60ppm/√kHr for the MSOP-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V ±0.05% (±1.024mV) at 25°C - enables precise 12-bit DAC/ADC full-scale calibration without trimming. |
| Temp Coefficient | ≤5ppm/°C max (A-grade) - ensures ≤0.61mV total drift over –40°C to 125°C span. |
| Low-Freq Noise | 2.1ppmP-P (0.1Hz–10Hz) - translates to 4.3µVP-P, critical for 20+ bit measurement resolution. |
| Sink/Source | ±1mA guaranteed sink, ±5mA source - supports direct driving of SAR ADC reference inputs and op-amp bias networks. |
| Dropout Voltage | 300mV min - allows operation from 2.348V supply, enabling use with low-voltage LDOs or battery-powered systems. |
| Shutdown Current | <2µA max - reduces system standby power by >99% vs active mode (560µA typical). |
| Line Regulation | 2ppm/V typical - limits output change to <26ppm (53µV) over full 2.7V–13.2V input range. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3mm × 3mm, 0.65mm pitch, θJA = 200°C/W. Pin 1 (DNC) must remain unconnected; Pins 5, 7, and 8 are internal ground terminals and must be connected to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DNC) | Do Not Connect | Unbonded pad - floating connection causes no function or reliability impact. |
| 2 (VIN) | Power Input | Accepts 2.7V–13.2V; 0.1µF bypass capacitor recommended near pin for PSRR improvement. |
| 3 (SHDN) | Active-Low Enable | Logic low (<0.8V) enters shutdown; logic high (>2.0V) enables output; hysteresis prevents chatter near threshold. |
| 4 (GND) | Primary Ground | Main reference ground return path; must be low-impedance connection to system ground plane. |
| 5, 7, 8 (GND*) | Internal Ground | Die substrate connections - require direct PCB ground via multiple vias to minimize thermal and IR errors. |
| 6 (VOUT) | Reference Output | Buffered 2.048V source/sink node; stable without capacitor; optional 0.1–10µF improves transient response. |
Key Features
| Feature | Design Value |
|---|---|
| High-Accuracy Trim | Factory-trimmed to ±0.05% at 25°C - eliminates need for system-level calibration in cost-sensitive instrumentation. |
| Wide-Temp Operation | Full specification over –40°C to 125°C - qualified for under-hood automotive and industrial control applications. |
| No-Load Stability | Stable with 0µF output capacitance - simplifies layout in space-constrained PCBs where decoupling caps are omitted. |
| Low Thermal Hysteresis | 80ppm max (–40°C ↔ 125°C cycle) in MSOP - minimizes repeatability error in cyclic thermal environments. |
| Hermetic Alternative | LS8 package option available - eliminates humidity-induced drift (up to 100ppm in plastic MSOP) for medical or outdoor deployments. |
Applications
| Automotive Sensor Signal Conditioning | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Reference for 16-bit delta-sigma ADC measuring exhaust gas oxygen concentration in engine control units. IC Role / Device Role / Timing Role: Provides stable 2.048V reference for ratiometric sensor excitation and ADC conversion, rejecting supply ripple and thermal gradients. Use Value: Enables <±0.01% full-scale measurement accuracy over vehicle lifetime, meeting ISO 26262 ASIL-B functional safety requirements. | Use Scenario: Precision reference for portable multichannel EEG amplifier front-end with 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift bias to programmable gain instrumentation amplifiers and ADC reference inputs. Use Value: Delivers 2.1ppmP-P noise floor, supporting sub-1µV input-referred resolution without external filtering. |
| Industrial Process Controller | Medical Diagnostic Equipment |
Use Scenario: Reference for 4–20mA loop transmitter DAC in hazardous-area PLC I/O modules. IC Role / Device Role / Timing Role: Serves as isolated, temperature-stable reference for current-output DAC, ensuring loop accuracy across ambient extremes. Use Value: Maintains ≤5ppm/°C drift and ±0.05% initial tolerance, guaranteeing <0.1% total error over –40°C to 70°C operating range. | Use Scenario: Calibration reference for portable ultrasound beamformer ASIC requiring stable timing and amplitude references. IC Role / Device Role / Timing Role: Provides primary voltage reference for time-of-flight measurement circuits and analog front-end gain stages. Use Value: Long-term drift of 60ppm/√kHr ensures <100ppm total shift over 5-year product life, meeting FDA Class II device stability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5020AIDR | 2.048V, ±0.05%, 3ppm/°C max, 10µVP-P (0.1–10Hz), SOIC-8, 1.2mA max supply current | Lower drift but higher noise (10µVP-P ≈ 4.9ppmP-P) and no shutdown mode | Select when ultra-low drift dominates over noise and power; avoid where shutdown or low-noise is mandatory. |
| LTC6655AHMS8-2.048#TRPBF | 2.048V, ±0.025%, 2ppm/°C max, 1.2ppmP-P (0.1–10Hz), same MSOP-8 package, 1.3mA supply current | Higher accuracy, lower noise, lower drift - but no shutdown and higher cost | Choose for metrology-grade systems where 0.025% initial error and 1.2ppmP-P noise justify premium pricing. |
Compared with REF5020AIDR and LTC6655AHMS8-2.048#TRPBF, the LTC6652AHMS8-2.048#TRPBF uniquely balances A-grade accuracy, industry-leading low noise, and integrated shutdown in a cost-optimized MSOP package - making it optimal for battery-aware industrial sensors and automotive ECUs where power cycling is routine.
Availability
LTC6652AHMS8-2.048#TRPBF is available at Aetrix Electronics and suitable for automotive sensor modules, high-resolution data loggers, and industrial process controllers requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LTC6652AHMS8-2.048#TRPBF 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 specifically for demanding precision applications requiring guaranteed performance over –40°C to 125°C, including automotive, industrial, and medical systems where reference stability directly impacts measurement integrity.
FAQ
What is the maximum sink current supported by the LTC6652AHMS8-2.048#TRPBF?
The LTC6652AHMS8-2.048#TRPBF guarantees ±1mA sink current capability across –40°C to 125°C. This is explicitly specified for the 1.25V and 2.048V variants in the Electrical Characteristics table, distinguishing it from higher-voltage versions (≥2.5V) which support ±5mA sink. Exceeding ±1mA may cause output voltage deviation beyond datasheet limits.
Does the LTC6652AHMS8-2.048#TRPBF require an output capacitor for stability?
No, the LTC6652AHMS8-2.048#TRPBF is unconditionally stable with 0µF output capacitance. An optional 0.1µF to 10µF capacitor can improve transient response for load steps, but is not required for stability. The Typical Performance Characteristics section confirms no region of marginal stability exists for COUT = 0µF across all load conditions.
How does shutdown mode affect the output impedance of the LTC6652AHMS8-2.048#TRPBF?
In shutdown mode (SHDN ≤ 0.8V), the LTC6652AHMS8-2.048#TRPBF disables its internal buffer and presents a high-impedance output approximating 20kΩ × VOUT = ~41kΩ. This is explicitly stated in the Applications Information section and verified in Figure 11's shutdown response waveform, where VOUT settles to an open-circuit value determined by external loading.
What is the minimum input voltage required for the LTC6652AHMS8-2.048#TRPBF to maintain 0.1% output accuracy?
The minimum input voltage for the LTC6652AHMS8-2.048#TRPBF is VOUT + 300mV = 2.348V, as specified in the Absolute Maximum Ratings and confirmed in the Electrical Characteristics table under "Minimum Operating Voltage". At this VIN, output error remains ≤0.1% even with 5mA sourcing load.
Is the LTC6652AHMS8-2.048#TRPBF compatible with lead-free reflow processes?
Yes, the LTC6652AHMS8-2.048#TRPBF is qualified for lead-free reflow per the JEDEC J-STD-020 standard. Its specified peak reflow temperature is 260°C (Figure 14), and experimental data (Figure 15a) shows mean output voltage shift of only +0.003% after double reflow, well within A-grade ±0.05% initial tolerance.
LTC6652AHMS8-2.048#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.1ppmp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.7V ~ 13.2V
- Current - Supply:
- 560µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6652AHMS8-2.048#TRPBF FAQ
1.How can I place an order for LTC6652AHMS8-2.048#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6652AHMS8-2.048#TRPBF 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 LTC6652AHMS8-2.048#TRPBF reliable?
The price and inventory of LTC6652AHMS8-2.048#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6652AHMS8-2.048#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6652AHMS8-2.048#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6652AHMS8-2.048#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6652AHMS8-2.048#TRPBF?
LTC6652AHMS8-2.048#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6652AHMS8-2.048#TRPBF 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 LTC6652AHMS8-2.048#TRPBF?
For technical support, including LTC6652AHMS8-2.048#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6652AHMS8-2.048#TRPBF requirements.
6.How does Aetrix verify that LTC6652AHMS8-2.048#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6652AHMS8-2.048#TRPBF 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 LTC6652AHMS8-2.048#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6652AHMS8-2.048#TRPBF?
All LTC6652AHMS8-2.048#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6652AHMS8-2.048#TRPBF, 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 LTC6652AHMS8-2.048#TRPBF part is unused and in its original packaging.
Return procedure for LTC6652AHMS8-2.048#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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