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Analog Devices Inc. LTC2480CMS#TRPBF
- Part No.:
- LTC2480CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2480CMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:230
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Product details
Overview
LTC2480CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit + sign no-latency delta-sigma ADC with patented Easy Drive input current cancellation, enabling rail-to-rail differential inputs (0V to VCC) with zero net differential input current. It features programmable gain (1–256), simultaneous 50Hz/60Hz line rejection, internal oscillator, and operates from 2.7V to 5.5V supply. It directly digitizes high-impedance sensors-e.g., strain gauges or load cells-in industrial process control systems.
For engineers reviewing the LTC2480CMS#TRPBF datasheet, LTC2480CMS#TRPBF pinout, LTC2480CMS#TRPBF application, or LTC2480CMS#TRPBF equivalent, key selection criteria include its 2ppm INL, 1ppm offset error, 15ppm full-scale error, 0.6µVRMS noise (normal mode), and support for 10-Lead MSOP package with –40°C to 85°C operating range.
Technical Context
The LTC2480CMS#TRPBF implements a third-order ∆Σ modulator with automatic on-chip offset and full-scale calibration, achieving true no-latency digital filter settling in a single conversion cycle. Its Easy Drive sampling scheme cancels dynamic input current errors without requiring external buffering, allowing direct connection to sensors with source impedances up to 100kΩ while maintaining DC accuracy.
It supports dual clocking modes: internal oscillator (307.2kHz) for fixed 15Hz output rate in normal mode, or external clock via fO pin for configurable data rates and enhanced line rejection flexibility. The 4-wire SPI-compatible interface includes SDI for configuration (gain, rejection mode, temperature sensor enable) and SDO for 24-bit output with status indication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit + sign, no missing codes - guarantees monotonicity and unambiguous code mapping across full input range. |
| INL | 2ppm of VREF (0.25LSB at 5V reference) - enables high-precision weight scale or DVM applications without calibration interpolation. |
| Offset Error | ±0.5µV typical - eliminates need for system-level zero-point trimming in microvolt-level sensor measurements. |
| Full-Scale Error | ±25ppm of VREF - ensures <±0.0025% gain accuracy over temperature for calibrated transducer interfaces. |
| Output Noise | 0.6µVRMS (5V ref, GAIN=1) - supports 19.5 effective bits at 15Hz with 2.5V reference and low-noise layout. |
| Line Rejection | 140dB common-mode, 110dB normal-mode at 50/60Hz - rejects mains interference in industrial environments without external notch filters. |
| Supply Range | 2.7V to 5.5V - compatible with both 3.3V and 5V logic domains and battery-powered instrumentation. |
Pinout & Package
Package: 10-Lead Plastic MSOP (3mm × 3mm), exposed pad grounded. Operating temperature range: –40°C to 85°C (I-grade).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDI) | Serial Data Input | Configures gain (1–256), line rejection mode (50Hz/60Hz/simultaneous), temperature sensor enable, and 2x speed via 8-bit command on rising SCK edge. |
| 2 (VCC) | Positive Supply | 2.7V–5.5V analog/digital supply; requires local 1µF tantalum + 0.1µF ceramic bypass to Pin 8 (GND). |
| 3 (VREF) | Reference Input | Accepts 0.1V to VCC; reference common-mode range is GND to VCC - enables ratiometric or low-voltage reference designs. |
| 4 (IN+), 5 (IN–) | Differential Analog Inputs | Rail-to-rail common-mode (GND–0.3V to VCC+0.3V); differential range = ±0.5×VREF/GAIN - supports direct connection to bridge sensors. |
| 6 (CS) | Active-Low Chip Select | Wakes device from sleep (1µA) into conversion/data mode; falling edge initiates new conversion; rising edge during transfer aborts and restarts. |
| 7 (SDO) | Three-State Serial Output | Outputs 24-bit result on falling SCK edges; tri-states when CS high; doubles as conversion status indicator (low = busy, high = ready). |
| 8 (GND) | Ground | Single shared analog/digital/reference ground plane connection point - critical for noise immunity and reference stability. |
| 9 (SCK) | Bidirectional Clock | Internal mode: outputs 38.4kHz clock; external mode: accepts ≤4MHz clock - determines timing control autonomy and interface flexibility. |
| 10 (fO) | Frequency Control | GND = internal 307.2kHz oscillator; driven externally = overrides conversion clock for custom data rates or adaptive line rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive Input Current Cancellation | Zero net differential input current enables direct digitization of high-Z sources (e.g., thermistors, pH electrodes) without buffer-induced errors or drift. |
| No-Latency ∆Σ Architecture | Digital filter settles in one conversion cycle - eliminates pipeline delay and simplifies real-time control loop synchronization. |
| Programmable Gain (1–256) | Eight discrete gain steps allow optimal full-scale utilization across sensor types (e.g., 1 for 10mV/V load cells, 128 for µV-level thermocouples). |
| Simultaneous 50Hz/60Hz Rejection | Single configuration rejects both global mains frequencies - eliminates need for region-specific hardware revisions in export-grade instruments. |
| On-Chip Temperature Sensor | Internal PTAT signal (390–450mV at 27°C) provides system-level thermal monitoring without external components or calibration. |
| Auto-Calibration Engine | Continuous transparent offset and full-scale calibration maintains accuracy over time and temperature - no user intervention required. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
Use Scenario: High-resolution weighing in commercial scales, platform scales, and checkweighers with 10,000+ divisions. IC Role / Device Role / Timing Role: Primary analog front-end ADC digitizing mV-level bridge output with 1µV resolution and 0.001% linearity. Use Value: Eliminates external instrumentation amplifier and precision voltage reference, reducing BOM count and thermal drift errors. |
Use Scenario: Structural health monitoring in industrial machinery using bonded foil or MEMS strain gauges. IC Role / Device Role / Timing Role: Direct sensor digitizer interfacing to quarter-bridge configurations with programmable gain and 50/60Hz rejection. Use Value: Enables sub-microstrain resolution without external filtering or chopper-stabilized amplifiers, improving long-term stability. |
| Industrial Process Control | DVMs and Meters |
Use Scenario: Analog input modules in PLCs and distributed I/O systems measuring 4–20mA loops, RTDs, or thermocouples. IC Role / Device Role / Timing Role: Precision ADC with integrated reference and auto-calibration for multi-channel, isolated field transmitter interfaces. Use Value: Reduces calibration labor and improves channel-to-channel matching across temperature, supporting SIL-2 functional safety compliance. |
Use Scenario: Portable handheld digital multimeters requiring 5½-digit accuracy and battery life >100 hours. IC Role / Device Role / Timing Role: Core measurement engine providing 16-bit resolution, low power (160µA active), and simultaneous AC/DC rejection. Use Value: Achieves 0.005% basic accuracy at 15Hz update rate while consuming <1mW - extends battery runtime without sacrificing precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit resolution, lower noise (0.15µVRMS), but requires external reference and op-amp buffering; no built-in line rejection. | Better suited for ultra-low-noise applications (e.g., medical EEG) where external circuitry is acceptable and mains rejection is handled digitally. | Select ADS124S08IPWR when higher resolution and lower noise outweigh integration benefits and board space constraints. |
| MAX11206ETL+ | 20-bit resolution, integrated PGA (1–128), 12ppm INL, but only 50Hz or 60Hz (not simultaneous) line rejection; 1.8V–3.6V supply only. | Targeted at portable, low-voltage systems (e.g., handheld gas analyzers) where simultaneous dual-frequency rejection is not required. | Choose MAX11206ETL+ for compact 3V-only designs needing moderate precision and single-frequency rejection, not industrial 5V systems. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2480CMS#TRPBF delivers superior integration (on-chip oscillator, simultaneous 50/60Hz rejection, rail-to-rail inputs) and wider supply range (2.7V–5.5V), making it optimal for cost-sensitive, space-constrained industrial sensors where ease of use and robustness matter most.
Availability
LTC2480CMS#TRPBF is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2480CMS#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2480CMS#TRPBF belongs to ADI's legacy Linear Technology precision delta-sigma ADC family, designed specifically for direct sensor digitization in harsh industrial environments where accuracy, noise immunity, and minimal external components are critical.
FAQ
What is the operating temperature range for the LTC2480CMS#TRPBF?
The LTC2480CMS#TRPBF is rated for –40°C to +85°C (I-grade), validated per manufacturer specifications in the LTC2480 datasheet. This range supports deployment in industrial control cabinets, outdoor metering enclosures, and factory-floor instrumentation without derating. The MSOP package's thermal performance is characterized with θJA = 120°C/W.
Does the LTC2480CMS#TRPBF require an external crystal or oscillator?
No, the LTC2480CMS#TRPBF includes an on-chip trimmed oscillator that runs at 307.2kHz when the fO pin is tied to GND, enabling standalone operation at 15Hz output rate. An external clock may be applied to fO only if custom data rates or adaptive line rejection are needed - no crystal or oscillator component is required for standard use.
How does the Easy Drive technology in the LTC2480CMS#TRPBF improve sensor interface performance?
Easy Drive technology in the LTC2480CMS#TRPBF automatically cancels differential input current during sampling, eliminating dynamic errors caused by source impedance mismatch. This allows direct connection to high-impedance sensors (e.g., 100kΩ thermistors or piezoresistive elements) without external buffers, preserving DC accuracy and reducing PCB area and component count.
Can the LTC2480CMS#TRPBF measure temperature internally?
Yes, the LTC2480CMS#TRPBF integrates a PTAT (proportional-to-absolute-temperature) sensor delivering 390–450mV at 27°C. By asserting the appropriate command on the SDI pin, users can select the internal temperature signal instead of the external IN+/IN– inputs - enabling system thermal monitoring without adding discrete sensors or ADC channels.
What are the supported line frequency rejection modes for the LTC2480CMS#TRPBF?
The LTC2480CMS#TRPBF supports three line rejection modes selectable via SDI: 50Hz only, 60Hz only, or simultaneous 50Hz/60Hz rejection - all achieving ≥140dB common-mode and ≥110dB normal-mode attenuation. This eliminates the need for external notch filters or firmware-based digital cancellation in globally deployed equipment.
LTC2480CMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 7.5
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- Temperature Sensor
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2480CMS#TRPBF FAQ
1.How can I place an order for LTC2480CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2480CMS#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 LTC2480CMS#TRPBF reliable?
The price and inventory of LTC2480CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2480CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2480CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2480CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2480CMS#TRPBF?
LTC2480CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2480CMS#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 LTC2480CMS#TRPBF?
For technical support, including LTC2480CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2480CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2480CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2480CMS#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 LTC2480CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2480CMS#TRPBF?
All LTC2480CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2480CMS#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 LTC2480CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2480CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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