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Analog Devices Inc. LTC2462IMS#PBF
- Part No.:
- LTC2462IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2462IMS#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:191
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Product details
Overview
LTC2462IMS#PBF 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 MSOP-12 package. It delivers 60 conversions per second, 2 LSB offset error, 0.01% gain error, and operates from 2.7V to 5.5V supply - enabling high-accuracy sensor digitization in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2462IMS#PBF datasheet, LTC2462IMS#PBF pinout, LTC2462IMS#PBF application, or LTC2462IMS#PBF equivalent, key selection considerations include its differential input architecture, 2µA max sleep current, internal oscillator eliminating external timing components, and guaranteed no missing codes across –40°C to +85°C.
Technical Context
The LTC2462IMS#PBF implements a proprietary delta-sigma modulator with sinc³ decimation filtering, continuous internal offset and full-scale calibration, and single-cycle conversion settling for multiplexed inputs. Its differential input stage accepts ±1.25V signals referenced to REF–, with overrange tolerance up to ±8 LSB beyond full scale.
It uses an internal oscillator (no external crystal required), supports CPOL = 0 or 1 SPI modes, and features automatic power-down after conversion - reducing supply current to 200nA when both ADC and reference are disabled. Reference startup time is 12ms with 0.1µF COMP and REFOUT capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, no missing codes - ensures monotonicity and unambiguous digital representation of analog inputs. |
| Input Type | Differential (±VREF) - rejects common-mode noise and enables true bipolar signal measurement. |
| Reference Voltage | 1.25V ±3mV (1.247V–1.253V), 5ppm/°C max drift (I-grade) - provides stable full-scale scaling without external reference. |
| Conversion Rate | 60 conversions/second - supports real-time sampling of slow-varying physical parameters (e.g., temperature, pressure). |
| Supply Current | 1.5mA typical during conversion; 2µA max in sleep mode - enables battery-powered or ultra-low-power system operation. |
| Offset Error | 2 LSB max - limits zero-input output deviation to ≤0.038mV at VREF = 1.25V. |
| Gain Error | ±0.01% of full scale - contributes ≤1.25µV error per mV of input span. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 3mm), exposed pad optional, rated for –40°C to +85°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V precision voltage source; must be bypassed with 0.1µF to GND for stability. |
| COMP (2) | Reference compensation | Connects to 0.1µF capacitor to GND 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 transfer timing; supports idle-high (CPOL=1) or idle-low (CPOL=0) SPI modes. |
| SDO (6) | Serial data output | 3-state output delivering 16-bit conversion result MSB-first on SCK falling edges. |
| GND (7, 11) | Ground | Low-impedance return path for analog/digital circuits; pins 7 and 11 both connect to substrate ground. |
| REF– (8) | Negative reference input | Sets zero-input level; typically connected to system ground or remote sensor ground sense point. |
| 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 rejection of shared noise between IN+ and IN– paths. |
| VCC (12) | Positive supply | 2.7V–5.5V operation; requires 10µF + 0.1µF parallel bypassing at pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.25V reference | 5ppm/°C max drift (I-grade), 0.1% initial accuracy - eliminates external reference IC and associated layout complexity. |
| No-latency data output | Output corresponds exactly to last completed conversion - enables deterministic timing in multiplexed sensor systems. |
| Ultra-low input sampling current | 50nA average - allows direct connection of RC antialiasing filters (e.g., 1kΩ + 0.1µF) with <1 LSB error. |
| Auto shutdown architecture | Reduces supply current to 200nA when both ADC and reference are powered down - extends battery life in intermittent-read applications. |
| Internal oscillator | Eliminates need for external crystal or clock source - reduces BOM count and PCB area in compact designs. |
Applications
| Environmental Monitoring | Industrial Process Control |
|---|---|
Use Scenario: Measuring thermistor or RTD outputs in HVAC or weather stations with wide ambient temperature variation. IC Role / Device Role / Timing Role: Differential ADC digitizing ratiometric bridge or voltage outputs while rejecting common-mode EMI from motors or switching supplies. Use Value: 16-bit resolution and continuous calibration maintain ±0.1°C accuracy over –40°C to +85°C without recalibration. |
Use Scenario: Digitizing 4–20mA loop sensor outputs via precision shunt resistor in PLC analog input modules. IC Role / Device Role / Timing Role: High-accuracy, low-drift ADC providing isolated current-to-digital conversion with minimal external components. Use Value: Integrated 1.25V reference and 2 LSB offset error enable <0.05% total unadjusted error (TUE) in 16-bit current measurement. |
| Direct Temperature Measurements | Data Acquisition |
Use Scenario: Cold-junction compensation in thermocouple interfaces using onboard temperature sensing. IC Role / Device Role / Timing Role: Precision ADC measuring thermistor voltage with differential input to cancel trace resistance errors. Use Value: 60 sps sampling rate and no-latency output allow synchronized multi-channel acquisition without inter-channel skew. |
Use Scenario: Portable multimeter or handheld test equipment requiring high-resolution DC voltage measurement. IC Role / Device Role / Timing Role: Core digitizer with integrated reference and SPI interface for microcontroller-based metering firmware. Use Value: 2µA sleep current and auto-shutdown enable >1-year battery life in standby between measurements. |
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 | Better suited for I²C-based microcontrollers; lacks differential input flexibility and ultra-low sleep current | Select when I²C bus availability outweighs need for lowest power and differential input robustness |
| MAX11206ETL+ | 16-bit, SPI interface, integrated 2.048V ref (2ppm/°C), 125SPS max, 350µA active current, 500nA sleep | Higher speed and lower reference drift, but larger 16-pin TQFN package and no overrange tolerance | Select when higher throughput and tighter reference stability are prioritized over board space and input overrange capability |
Compared with ADS1115IDGSR and MAX11206ETL+, the LTC2462IMS#PBF offers superior differential input resilience, lowest sleep current (200nA), and smallest footprint (MSOP-12), making it optimal for space- and power-constrained industrial sensor nodes where SPI is available.
Availability
LTC2462IMS#PBF is available at Aetrix Electronics and suitable for environmental monitoring, industrial process control, and portable data acquisition requiring stable component supply across extended temperature ranges.
Supply support for LTC2462IMS#PBF 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 LTC2462IMS#PBF belongs to the ultra-low-power, integrated-reference delta-sigma ADC product line designed specifically for high-accuracy, space-constrained sensor interface applications in industrial and instrumentation markets.
FAQ
What is the operating temperature range of the LTC2462IMS#PBF?
The LTC2462IMS#PBF is specified for –40°C to +85°C operation (I-grade). This rating is confirmed by the "IMS" suffix in the part number and the Electrical Characteristics table's "l" notation indicating full-range specification compliance. The MSOP-12 package supports this extended range with θJA = 120°C/W.
Does the LTC2462IMS#PBF require an external clock source?
No, the LTC2462IMS#PBF does not require an external clock source. It includes a fully integrated oscillator, as explicitly stated in the Features list and Applications Information section. This eliminates the need for crystals, resonators, or external clock generators, simplifying design and reducing bill-of-materials cost.
How does the LTC2462IMS#PBF handle input overrange conditions?
The LTC2462IMS#PBF supports up to ±8 LSB overrange beyond its ±VREF full-scale range. As documented in the Electrical Characteristics table and Figure 3, it can digitize inputs slightly below GND or above VREF while maintaining code integrity - a feature enabled by its proprietary input sampling architecture.
What is the reference voltage accuracy and drift specification for the LTC2462IMS#PBF?
The LTC2462IMS#PBF provides a 1.25V reference with ±3mV initial accuracy (1.247V to 1.253V) and maximum drift of ±5ppm/°C over –40°C to +85°C. These values are directly extracted from the "Electrical Characteristics" table under VREF and "Reference Voltage Coefficient" rows for I-grade devices.
Can the LTC2462IMS#PBF be used in single-ended configurations?
No, the LTC2462IMS#PBF is exclusively a differential-input ADC. Its pinout (IN+, IN–) and functional description confirm it accepts only differential signals across ±VREF. For single-ended operation, the pin-compatible LTC2460IMS#PBF must be used - a distinct part with IN and GND pins instead of IN+ and IN–.
LTC2462IMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC2462IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2462IMS#PBF 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#PBF reliable?
The price and inventory of LTC2462IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2462IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2462IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2462IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2462IMS#PBF?
LTC2462IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2462IMS#PBF 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#PBF?
For technical support, including LTC2462IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2462IMS#PBF requirements.
6.How does Aetrix verify that LTC2462IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2462IMS#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC2462IMS#PBF?
All LTC2462IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2462IMS#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC2462IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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