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Analog Devices Inc. LTC2462IMS#TRPBF
- Part No.:
- LTC2462IMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2462IMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2462IMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma ADC with integrated 1.25V precision reference, differential input architecture (±VREF 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 LTC2462IMS#TRPBF datasheet, LTC2462IMS#TRPBF pinout, LTC2462IMS#TRPBF application, or LTC2462IMS#TRPBF equivalent, key selection criteria include guaranteed no-missing-codes performance, ±2 LSB offset error, 0.01% gain error, internal oscillator eliminating external timing components, and MSOP-12 package compatibility with legacy board layouts.
Technical Context
The LTC2462IMS#TRPBF implements a proprietary delta-sigma modulator with continuous internal offset and full-scale calibration, ensuring stability over temperature without user intervention. Its differential input stage accepts ±1.25V signals referenced to REF–, with clamping at ±VREF and 8-LSB overrange capability below GND or above VREF.
Conversion is synchronized by an integrated oscillator; no external clock is required. The device transitions automatically between CONVERT (16.6 ms typical), NAP (ADC off, reference on), and SLEEP (ADC + reference off) states, achieving 200 nA total supply current when both blocks are powered down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and eliminates code gaps in critical measurement systems. |
| Input Type | Differential (IN+, IN–) with ±VREF range - enables rejection of common-mode noise in sensor bridges and transducers. |
| Reference Output | 1.25V ±3mV (1.247V to 1.253V) with ±5 ppm/°C max drift (I-grade) - supports stable full-scale scaling across –40°C to +85°C. |
| Conversion Rate | 60 conversions per second - provides sufficient throughput for slow-varying physical parameters (e.g., temperature, pressure). |
| Supply Current | 1.5 mA during conversion, 2 µA in sleep mode - enables battery-powered operation with multi-year runtime in duty-cycled sensing nodes. |
| Offset Error | ±2 LSB maximum - ensures sub-0.03% zero-scale accuracy without factory trimming or system-level nulling. |
| Gain Error | ±0.01% of full scale - minimizes span calibration burden in precision instrumentation designs. |
Pinout & Package
Package: 12-lead MSOP (3mm × 4.9mm), exposed pad optional, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V reference voltage source; requires 0.1µF bypass to GND for stability and low noise. |
| 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 SPI data transfer and controls state transition into DATA INPUT/OUTPUT mode. |
| SDI (4) | Serial data input | Accepts 4-bit configuration word (EN1/EN2/SPD/SLP) to set sleep mode and output rate (60Hz fixed for LTC2462). |
| SCK (5) | Serial clock input | Drives SPI timing; supports up to 2 MHz; idle-high or idle-low (CPOL = 0 or 1) compatible. |
| SDO (6) | Serial data output | 3-state output delivering 16-bit MSB-first result; indicates conversion status (HIGH = in progress, LOW = complete) when monitored with CS low and SCK high. |
| GND (7, 11) | Analog/digital ground | Low-impedance return path for reference, analog inputs, and digital logic; pins 7 and 11 must be tied to common ground plane. |
| REF– (8) | Negative reference input | Sets zero-input level; typically connected to system ground or remote sensor ground to minimize offset drift. |
| IN+ (9) | Differential positive input | Accepts signal up to VREF; supports 8-LSB overrange below GND when IN– = GND. |
| IN– (10) | Differential negative input | Completes differential pair; enables common-mode rejection and bipolar signal acquisition. |
| VCC (12) | Positive supply | 2.7V–5.5V input; requires local 10µF + 0.1µF bypassing to suppress supply noise coupling into reference and ADC core. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.25V reference | ±5 ppm/°C max drift (I-grade) and 0.1% initial accuracy eliminate need for external precision reference ICs or trimming. |
| No-latency serial output | Data corresponds exactly to last completed conversion - enables deterministic multiplexed sampling without pipeline delay or buffer management. |
| Proprietary input sampling | Average input current <50 nA - permits direct connection of RC antialiasing filters (e.g., 1kΩ + 0.1µF) with <1 LSB added error. |
| Auto-calibration engine | Continuous internal offset and full-scale correction - maintains accuracy over time and temperature without interrupting conversion flow or requiring host intervention. |
| Single-cycle shutdown | Enters 2 µA sleep mode after one conversion - ideal for event-triggered or wake-on-interrupt sensing architectures. |
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. IC Role / Device Role / Timing Role: Differential ADC digitizing low-level mV-range signals while rejecting power-line noise and ground-loop interference. Use Value: 16-bit resolution and ±2 LSB offset error enable detection of <0.01°C temperature changes without external amplification or calibration. |
Use Scenario: Battery-powered air quality sensor measuring CO₂, humidity, and particulate matter in smart building HVAC ducts. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned analog outputs from electrochemical and capacitive sensors at 60 Hz. Use Value: 2 µA sleep current extends 10-year battery life; integrated reference removes component count and layout area for external voltage references. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
Use Scenario: Precision cold-junction compensation using thermistor networks in portable test equipment with tight PCB real estate. IC Role / Device Role / Timing Role: High-accuracy differential front-end converting ratiometric bridge outputs into calibrated digital values. Use Value: ±VREF input range and 8-LSB overrange below GND allow direct digitization of thermistor voltages spanning –0.3 mV to +1.25 V without level-shifting circuitry. |
Use Scenario: Retrofitting legacy 12-bit microcontroller-based data loggers to meet new regulatory accuracy requirements for energy metering. IC Role / Device Role / Timing Role: Drop-in SPI-compatible ADC replacement adding 4 extra bits of resolution without firmware rewrite or PCB redesign. Use Value: Pin- and software-compatible with LTC2460; identical MSOP-12 footprint and register map simplify migration from single-ended to differential sensing. |
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 reference and level-shifting for ±VREF differential input; better suited for multi-sensor polling than continuous dual-input acquisition | Select when I²C bus availability, channel multiplexing, or higher speed outweighs need for integrated reference and ultra-low sleep current |
| LTC2452CMS#TRPBF | 16-bit, ±2.5V input range, same MSOP-12 package, 2.5V reference, 1.5µA sleep current | Wider input range suits higher-output sensors (e.g., strain gauges); shares identical pinout and SPI protocol but not drop-in due to different reference voltage | Select when full-scale range > ±1.25V is required and board layout allows minor reference decoupling adjustment |
Compared with ADS1115IDGSR and LTC2452CMS#TRPBF, the LTC2462IMS#TRPBF uniquely combines integrated 1.25V reference, true differential ±VREF input, and 2 µA sleep current in an MSOP-12 package-making it optimal for compact, low-power, single-sensor precision measurement where reference stability and minimal BOM count are critical.
Availability
LTC2462IMS#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, and direct temperature measurement requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2462IMS#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. (including former Linear Technology products) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision measurement and control.
The LTC2462IMS#TRPBF belongs to the ultra-low-power, integrated-reference delta-sigma ADC product line designed specifically for space-constrained, battery-operated, and high-accuracy sensor interface applications in industrial and environmental systems.
FAQ
What is the operating temperature range for the LTC2462IMS#TRPBF?
The LTC2462IMS#TRPBF is specified for –40°C to +85°C operation (I-grade). This rating is confirmed by the "IMS" suffix in the part number and aligns with the absolute maximum ratings table showing TJMAX = 125°C and θJA = 120°C/W for the MSOP package. Performance parameters including offset error drift (±0.02 LSB/°C) and reference coefficient (±5 ppm/°C) are guaranteed across this full range.
Does the LTC2462IMS#TRPBF require an external crystal or clock source?
No, the LTC2462IMS#TRPBF does not require an external crystal or clock source. It includes a fully integrated oscillator that drives the delta-sigma modulator and digital timing blocks. The datasheet explicitly states "Internal Oscillator-No External Components Required" under Features, and timing diagrams confirm autonomous operation with only SPI clock (SCK) needed for data readout.
Can the LTC2462IMS#TRPBF measure signals below ground potential?
Yes, the LTC2462IMS#TRPBF can digitize inputs up to 8 LSBs below ground when configured differentially. As documented in the Applications Information section, with IN– tied to GND and VREF = 1.25V, an IN+ voltage of –0.305 mV produces an output code of ~32760 - demonstrating true sub-ground capability without external level-shifting circuitry.
What is the maximum SCK frequency supported by the LTC2462IMS#TRPBF?
The LTC2462IMS#TRPBF supports an SCK frequency up to 2 MHz, as specified in the Timing Characteristics table under "fSCK SCK Frequency Range". This value applies across the full operating temperature range and enables fast data readout - completing the 16-bit serial transfer in ≤8 µs - while maintaining robust noise immunity in electrically noisy industrial environments.
How does the LTC2462IMS#TRPBF achieve 2 µA sleep current?
The LTC2462IMS#TRPBF achieves 2 µA sleep current by powering down both the ADC core and the integrated reference simultaneously. This state is entered via the SLP bit in the SDI programming word; when SLP = 1, the reference shuts down after the next conversion completes. The datasheet confirms "When both the ADC and reference are powered down, the supply current is reduced to 200nA" - and the Electrical Characteristics table lists "Sleep" current as 0.2 µA (typical) and 2 µA (max), matching the LTC2462IMS#TRPBF's I-grade specification.
LTC2462IMS#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2462IMS#TRPBF FAQ
1.How can I place an order for LTC2462IMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2462IMS#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 LTC2462IMS#TRPBF reliable?
The price and inventory of LTC2462IMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2462IMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2462IMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2462IMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2462IMS#TRPBF?
LTC2462IMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2462IMS#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 LTC2462IMS#TRPBF?
For technical support, including LTC2462IMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2462IMS#TRPBF requirements.
6.How does Aetrix verify that LTC2462IMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2462IMS#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 LTC2462IMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2462IMS#TRPBF?
All LTC2462IMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2462IMS#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 LTC2462IMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2462IMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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