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Analog Devices Inc. LTC2462CMS#TRPBF
- Part No.:
- LTC2462CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2462CMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,629
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Product details
Overview
LTC2462CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma ADC with integrated 1.25V precision reference, differential ±VREF input range, SPI interface, and ultra-low 2µA sleep current. It operates from 2.7V to 5.5V, delivers 60 conversions per second, and targets high-accuracy sensor digitization in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2462CMS#TRPBF datasheet, LTC2462CMS#TRPBF pinout, LTC2462CMS#TRPBF application, or LTC2462CMS#TRPBF equivalent, key selection factors include its guaranteed no-missing-codes performance, 2LSB offset error, ±0.01% gain error, internal oscillator eliminating external timing components, and MSOP-12 package compatibility with legacy board layouts.
Technical Context
The LTC2462CMS#TRPBF implements a proprietary delta-sigma architecture with continuous internal offset and full-scale calibration, ensuring stable accuracy across temperature without user intervention. Its differential input stage accepts ±1.25V signals referenced to REF–, enabling true bipolar measurement with common-mode rejection.
It uses an integrated oscillator and single-cycle conversion settling, delivering latency-free data output for multiplexed sensor arrays. The device transitions automatically between CONVERT (1.5mA), NAP (800µA), and SLEEP (≤2µA) modes based on CS and SLP bit control, with 12ms reference startup time after wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, no missing codes - guarantees monotonicity and unambiguous digital representation of analog inputs. |
| Input Range | Differential ±VREF (±1.25V) - supports true bipolar signal acquisition without external level-shifting. |
| Reference Accuracy | 1.247V to 1.253V (±0.1% initial), ±2ppm/°C drift (C-grade) - enables direct use in precision metrology without external trimming. |
| Conversion Rate | 60 conversions/second - provides sufficient sampling for slow-varying physical parameters (e.g., temperature, pressure). |
| Supply Current | 1.5mA (active), ≤2µA (sleep) - allows battery-powered operation for >1 year in duty-cycled sensor nodes. |
| Offset Error | 2LSB max - limits zero-scale uncertainty to <38.1µV at 1.25V reference, critical for low-level signal fidelity. |
| Gain Error | ±0.01% of full scale - ensures end-point linearity within ±125µV over ±1.25V range. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), RoHS-compliant, exposed pad optional for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V precision voltage source; must be decoupled with ≤0.1µF capacitor to GND for stability. |
| COMP (2) | Reference compensation | Connects to same 0.1µF capacitor as REFOUT to stabilize internal reference loop dynamics. |
| CS (3) | Chip select (active low) | Enables SDO output and initiates DATA INPUT/OUTPUT state; HIGH places SDO in high-Z. |
| SDI (4) | Serial data input | Accepts 4-bit programming word (EN1/EN2/SPD/SLP); tied to GND/VCC for simplified configuration. |
| SCK (5) | Serial clock input | Controls data shift timing; supports CPOL = 0 or 1; max 2MHz frequency. |
| SDO (6) | Serial data output | 3-state output delivering 16-bit result MSB-first; indicates conversion status when SCK = HIGH and CS = LOW. |
| GND (7, 11) | Analog/digital ground | Low-impedance connection to PCB ground plane; pins 7 and 11 are internally bonded. |
| REF– (8) | Negative reference input | Sets zero-input point; typically connected to system ground or remote sensor ground sense. |
| IN+ (9) | Differential positive input | Accepts signal up to VREF above REF–; supports 8LSB overrange below GND under specified conditions. |
| IN– (10) | Differential negative input | Accepts signal up to VREF below REF–; enables true differential measurement with common-mode rejection. |
| VCC (12) | Positive supply | 2.7V–5.5V operation; requires 10µF + 0.1µF parallel bypassing at pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.25V reference | ±2ppm/°C drift (C-grade) eliminates need for external precision reference and associated layout complexity. |
| No-latency data output | 16-bit result corresponds exactly to last completed conversion - enables deterministic timing in multiplexed sensor systems. |
| Proprietary input sampling | Average input current ≤50nA - permits direct connection of RC anti-alias filters (e.g., 1kΩ + 0.1µF) with <1LSB error. |
| Auto-calibration engine | Continuous internal offset and full-scale correction - maintains accuracy over time and temperature without host intervention. |
| Ultra-low sleep current | ≤2µA with ADC and reference powered down - extends battery life in intermittent-read applications like environmental loggers. |
Applications
| Industrial Process Monitoring | Environmental Sensor Nodes |
|---|---|
Use Scenario: Continuous logging of thermocouple or RTD outputs in factory automation cabinets with limited airflow and wide ambient temperature swings (0°C to 70°C). IC Role / Device Role / Timing Role: Differential ADC digitizing µV-level thermocouple EMF against local cold-junction reference; provides stable 16-bit resolution without external amplification. Use Value: Eliminates external instrumentation amplifier and precision reference, reducing BOM count by 3 components while maintaining ±0.1°C temperature accuracy. |
Use Scenario: Solar-powered air quality monitor measuring PM2.5, CO₂, and humidity using analog-output sensors in outdoor enclosures. IC Role / Device Role / Timing Role: Low-power ADC acquiring sensor outputs every 30 seconds; enters 2µA sleep mode between conversions to maximize battery runtime. Use Value: Enables 2-year battery life on two AA cells due to sub-2µA sleep current and no external biasing requirements. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
Use Scenario: Digitizing output of AD590 or LM35 temperature sensors in medical diagnostic equipment requiring traceable calibration. IC Role / Device Role / Timing Role: Single-chip solution providing 16-bit linearized temperature readout with built-in reference; replaces discrete op-amp + external ADC + reference stack. Use Value: Reduces total unadjusted error to <±0.05°C over 0°C–70°C via integrated calibration and low-drift reference. |
Use Scenario: Retrofitting legacy 12-bit microcontroller-based systems (e.g., PLC I/O modules) to meet new 16-bit resolution requirements without PCB redesign. IC Role / Device Role / Timing Role: Pin-compatible upgrade path from LTC2452/LTC2450; retains identical MSOP-12 footprint and SPI timing interface. Use Value: Achieves 4× resolution improvement with zero layout changes and minimal firmware modification (only data width extension). |
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, 4-channel MUX, 860SPS max | Requires external 2.048V reference and level-shifting for ±VREF operation; better for multi-sensor polling | Choose ADS1115IDGSR when I²C bus availability and channel multiplexing outweigh need for integrated reference and differential simplicity. |
| LTC2450CMS#TRPBF | 16-bit, single-ended only, same package, 1.25V reference, but no differential input capability | Limited to unipolar 0–1.25V inputs; lacks IN+/IN– terminals and bipolar measurement support | Choose LTC2450CMS#TRPBF only for cost-sensitive single-ended applications where differential rejection is unnecessary. |
Compared with ADS1115IDGSR and LTC2450CMS#TRPBF, the LTC2462CMS#TRPBF uniquely combines differential input architecture, integrated low-drift reference, and SPI interface in an MSOP-12 package-making it optimal for precision bipolar sensor digitization where board space and component count are constrained.
Availability
LTC2462CMS#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, direct temperature measurement, and embedded ADC upgrades requiring stable component supply and long-term manufacturability.
Supply support for LTC2462CMS#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, serving industrial, automotive, communications, and healthcare markets.
The LTC2462CMS#TRPBF belongs to ADI's ultra-precision delta-sigma ADC product line, designed specifically for space-constrained, low-power applications demanding high DC accuracy without external support components.
FAQ
What is the operating temperature range for the LTC2462CMS#TRPBF?
The LTC2462CMS#TRPBF is rated for 0°C to 70°C (C-grade). This is confirmed by the "CMS" suffix in the part number and explicitly stated in the Absolute Maximum Ratings table of the official datasheet. It is not rated for extended industrial (–40°C to 85°C) operation - that variant is designated LTC2462IMS#TRPBF.
Does the LTC2462CMS#TRPBF require an external crystal or oscillator?
No, the LTC2462CMS#TRPBF does not require an external crystal or oscillator. It integrates a precision internal oscillator, enabling full functionality with only power, ground, reference decoupling capacitors, and SPI interface connections - as verified in the Features list and Applications Information section of the datasheet.
Can the LTC2462CMS#TRPBF measure signals below ground (negative voltages)?
Yes, the LTC2462CMS#TRPBF can digitize inputs slightly below ground: its proprietary architecture supports up to 8 LSBs (≈0.305mV at 1.25V reference) below GND on IN+ when IN– is tied to GND, provided the differential input remains within ±VREF. This is documented in the Input Voltage Range (LTC2462) section and Figure 3 of the datasheet.
What is the maximum SCK frequency supported by the LTC2462CMS#TRPBF?
The LTC2462CMS#TRPBF supports an SCK frequency up to 2 MHz across its full operating temperature range, as specified in the Timing Characteristics table (parameter fSCK). This allows fast data retrieval - all 16 bits can be read in ≤8µs - making it suitable for time-critical polling in real-time control loops.
How does the LTC2462CMS#TRPBF achieve such low sleep current?
The LTC2462CMS#TRPBF achieves ≤2µA sleep current by powering down both the delta-sigma modulator and the integrated 1.25V reference simultaneously when the SLP bit is set and CS is HIGH. This dual-shutdown mode is architecturally distinct from simpler ADCs that retain reference bias in sleep - a feature validated in the Electrical Characteristics table under "ICC Sleep".
LTC2462CMS#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):
- 60
- 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:
- -
LTC2462CMS#TRPBF FAQ
1.How can I place an order for LTC2462CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2462CMS#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 LTC2462CMS#TRPBF reliable?
The price and inventory of LTC2462CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2462CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2462CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2462CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2462CMS#TRPBF?
LTC2462CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2462CMS#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 LTC2462CMS#TRPBF?
For technical support, including LTC2462CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2462CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2462CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2462CMS#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 LTC2462CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2462CMS#TRPBF?
All LTC2462CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2462CMS#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 LTC2462CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2462CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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