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Analog Devices Inc. LTC2472CMS#TRPBF
- Part No.:
- LTC2472CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2472CMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,294
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Product details
Overview
LTC2472CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma ADC with integrated 1.25V precision reference, differential ±VREF input range, selectable 208sps/833sps output rate, and SPI interface - designed for high-accuracy sensor digitization in industrial monitoring systems.
For engineers reviewing the LTC2472CMS#TRPBF datasheet, LTC2472CMS#TRPBF pinout, LTC2472CMS#TRPBF application, or LTC2472CMS#TRPBF equivalent, key selection criteria include its 2ppm/°C reference drift, 1mV offset error, 0.01% gain error, single-cycle settling for multiplexed inputs, and 2µA max sleep current - all critical for low-power, high-stability measurement designs.
Technical Context
The LTC2472CMS#TRPBF implements a proprietary delta-sigma architecture with internal oscillator and no external timing components required. Its differential input stage supports ±1.25V full-scale range referenced to the integrated 1.25V reference, and it achieves true single-conversion settling without filter latency.
Operation cycles between CONVERT, NAP, and DATA INPUT/OUTPUT states; conversion time is 4ms at 208sps or 1ms at 833sps, and reference startup time is 12ms (with 0.1µF COMP/REFOUT capacitors). Sleep mode reduces supply current to ≤2µA by powering down both ADC and reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct codes for high-fidelity analog capture |
| Reference Output Voltage | 1.25V ±3mV - sets full-scale differential input range of ±1.25V |
| Reference Drift | ±2ppm/°C (C-grade) - ensures <±0.25mV drift over 0°C–70°C operating range |
| Offset Error | ±1mV - contributes ≤0.016% FS error at 1.25V full scale |
| Gain Error | ±0.01% of FS - limits scaling inaccuracy to <1 LSB at 16-bit resolution |
| Supply Current (Conversion) | 3.5mA typical - enables continuous sampling at 833sps with minimal thermal load |
| Sleep Current | 2µA maximum - supports battery-powered operation for extended idle periods |
| Input Sampling Current | 50nA average - allows direct RC filtering (e.g., 1kΩ + 0.1µF) with <1 LSB added error |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), rated for 0°C to 70°C operation. Exposed pad not electrically connected; optional thermal relief.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REFOUT) | Reference output | Nominally 1.25V precision voltage source; must be decoupled to GND with ≤0.1µF capacitor |
| 2 (COMP) | Reference compensation | Stabilizes internal reference; requires 0.1µF capacitor to GND matching REFOUT cap value |
| 3 (CS) | Chip select (active-low) | Enables SDO output and initiates DATA INPUT/OUTPUT state; rising edge aborts transfer and starts new conversion |
| 4 (SDI) | Serial data input | Accepts 4-bit command (EN1/EN2/SPD/SLP) to configure output rate (208/833sps) and sleep mode |
| 5 (SCK) | Serial clock input | Drives SPI timing; supports CPOL = 0 or 1; falling edge clocks out data on SDO |
| 6 (SDO) | Serial data output | 3-state output delivering 16-bit MSB-first binary result; high-impedance when CS = HIGH |
| 7, 11 (GND) | Analog/digital ground | Low-impedance return path for reference, ADC core, and digital logic; connect directly to PCB ground plane |
| 8 (REF–) | Negative reference input | Sets zero-input point; tied to system ground or sensor ground sense point |
| 9 (IN+) | Differential positive input | Accepts signal up to VREF above REF–; high-impedance input with 0.35pF sampling capacitance |
| 10 (IN–) | Differential negative input | Accepts signal up to VREF below REF–; matched to IN+ for common-mode rejection |
| 12 (VCC) | Positive supply | 2.7V–5.5V operation; requires parallel 10µF + 0.1µF bypassing at pin |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma conversion | Delivers valid 16-bit result per conversion cycle with zero filter settling delay - essential for multiplexed sensor arrays |
| User-selectable output rate | 208sps (8192× oversampling) or 833sps (2048× oversampling) - relaxes anti-aliasing filter requirements and adapts to dynamic signal bandwidth |
| Integrated 1.25V reference | 2ppm/°C drift, 0.1% initial accuracy, and 30nV/√Hz noise density - eliminates external reference component and layout complexity |
| Ultra-low power sleep mode | 2µA max supply current with both ADC and reference powered down - extends battery life in intermittent-read applications |
| Proprietary input sampling scheme | 50nA average input current - enables direct connection of passive RC filters without significant loading or error |
| Single-supply SPI interface | Operates from same 2.7V–5.5V rail as ADC core; supports CPOL = 0/1 and flexible CS/SCK timing for microcontroller compatibility |
Applications
| Industrial Process Monitoring | Environmental Sensor Nodes |
|---|---|
Use Scenario: Continuous logging of pressure, flow, or temperature transducer outputs in factory automation PLCs. IC Role / Device Role / Timing Role: Differential ADC digitizing ratiometric bridge sensors with self-referenced accuracy and immunity to common-mode noise. Use Value: 16-bit resolution and 2ppm/°C reference drift ensure <±0.02% total measurement uncertainty over 0°C–70°C ambient range. |
Use Scenario: Battery-powered air quality monitors measuring gas concentration via electrochemical or NDIR sensors. IC Role / Device Role / Timing Role: Low-power ADC acquiring differential sensor outputs during periodic wake-up intervals. Use Value: 2µA sleep current and single-cycle conversion enable >1-year battery life on coin-cell power while maintaining 16-bit fidelity. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
Use Scenario: Precision thermocouple or RTD front-end in HVAC control units requiring cold-junction compensation. IC Role / Device Role / Timing Role: High-accuracy differential ADC capturing µV-level thermocouple EMF with integrated reference stability. Use Value: 1mV offset error and 0.01% gain error minimize calibration burden and support <0.1°C temperature resolution. |
Use Scenario: Retrofitting legacy 12-bit or 14-bit ADC subsystems in medical or test equipment to improve dynamic range. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement offering 16-bit resolution, integrated reference, and SPI simplicity. Use Value: Eliminates external reference and op-amp buffer components while reducing BOM count and board area by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, I²C interface, no integrated reference (requires external 2.048V ref), 860sps max, 150µA active current | Lower integration; requires external reference and level-shifting for 5V systems; better suited for I²C-based microcontrollers | Select if I²C bus availability and lower pin count outweigh need for integrated reference and ultra-low sleep current |
| MAX11200EUB+ | 18-bit, SPI interface, integrated 2.048V reference (3ppm/°C), 120sps max, 300nA sleep current | Higher resolution but slower output rate; tighter reference drift spec but larger package (10-pin µMAX); no differential input option | Select when 18-bit resolution and sub-1ppm/°C effective drift are mandatory, and 120sps suffices for signal dynamics |
Compared with ADS1115IDGSR and MAX11200EUB+, the LTC2472CMS#TRPBF uniquely balances 16-bit precision, integrated 1.25V reference with 2ppm/°C drift, differential input, SPI simplicity, and 2µA sleep current - making it optimal for space-constrained, battery-aware industrial sensor nodes requiring guaranteed single-cycle accuracy.
Availability
LTC2472CMS#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, direct temperature measurement, and embedded ADC upgrade applications requiring stable component supply across production lifecycles.
Supply support for LTC2472CMS#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2472CMS#TRPBF belongs to the Linear Technology LTC24xx family of precision delta-sigma ADCs, engineered specifically for low-power, high-accuracy sensor interfacing in industrial and instrumentation applications where reference stability and conversion integrity are critical.
FAQ
What is the operating temperature range for the LTC2472CMS#TRPBF?
The LTC2472CMS#TRPBF is specified for 0°C to 70°C operation (C-grade). This is confirmed by the "CMS" package suffix and Order Information table, which lists "LTC2472CMS#TRPBF" under "0°C to 70°C" temperature range. It uses the 12-lead MSOP package and is not rated for industrial –40°C to 85°C operation - that variant is designated LTC2472IMS#TRPBF.
Does the LTC2472CMS#TRPBF require external clocking components?
No, the LTC2472CMS#TRPBF does not require external clocking components. It integrates a precision oscillator, enabling autonomous operation with only VCC, GND, and SPI signals needed. The datasheet explicitly states "Internal Oscillator-No External Components Required" and confirms this in the Block Diagram and Applications Information sections.
How does the LTC2472CMS#TRPBF achieve single-cycle settling for multiplexed inputs?
The LTC2472CMS#TRPBF achieves single-cycle settling through its proprietary input sampling architecture and no-latency delta-sigma design. Unlike conventional sigma-delta converters requiring multiple output cycles to settle after input changes, the LTC2472CMS#TRPBF delivers a fully settled 16-bit result each conversion - verified by the "Single Conversion Settling Time for Multiplexed Applications" feature and functional block diagram showing direct path from input to output register.
What is the maximum sleep current specification for the LTC2472CMS#TRPBF?
The maximum sleep current for the LTC2472CMS#TRPBF is 2µA, as stated in the "Features" list and confirmed in the Electrical Characteristics table under "Power Requirements" (ICC Sleep, max = 2µA). This occurs when both the ADC and integrated reference are powered down via the SLP bit, and is measured across the full 0°C to 70°C operating range.
Can the LTC2472CMS#TRPBF interface directly with a thermocouple without external amplification?
The LTC2472CMS#TRPBF can interface directly with thermocouples only when used with appropriate external signal conditioning. Its ±1.25V differential input range and 1mV offset error are insufficient for raw µV-level thermocouple outputs; a low-noise, high-gain instrumentation amplifier (e.g., LT1167 or AD8495) is required upstream to scale and cold-junction compensate the signal before connection to IN+/IN–.
LTC2472CMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 833
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2472CMS#TRPBF FAQ
1.How can I place an order for LTC2472CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2472CMS#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 LTC2472CMS#TRPBF reliable?
The price and inventory of LTC2472CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2472CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2472CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2472CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2472CMS#TRPBF?
LTC2472CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2472CMS#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 LTC2472CMS#TRPBF?
For technical support, including LTC2472CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2472CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2472CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2472CMS#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 LTC2472CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2472CMS#TRPBF?
All LTC2472CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2472CMS#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 LTC2472CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2472CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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