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Analog Devices Inc. LTC2411CMS#PBF
- Part No.:
- LTC2411CMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2411CMS#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:478
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Product details
Overview
LTC2411CMS#PBF from Analog Devices (formerly Linear Technology) is a 24-bit micropower delta-sigma analog-to-digital converter with differential input and reference, integrated oscillator, 2 ppm INL, 0.29 ppm RMS noise, and single-cycle settling time. It operates from 2.7V to 5.5V and is used in precision sensor digitization for weight scales, strain gauge transducers, and industrial process control.
For engineers reviewing the LTC2411CMS#PBF datasheet, LTC2411CMS#PBF pinout, LTC2411CMS#PBF application, or LTC2411CMS#PBF equivalent, key selection criteria include its 110 dB 50/60 Hz notch rejection (FO = VCC/GND), 10-lead MSOP package, 200 µA conversion current, differential ratiometric measurement capability, and SPI/MICROWIRE-compatible 3-wire interface.
Technical Context
The LTC2411CMS#PBF implements a decimating FIR digital filter with internal oscillator-based clocking, enabling true no-latency operation-each conversion result corresponds directly to the sampled input without filter settling delay. Its auto-calibration engine performs offset and full-scale correction every cycle, ensuring long-term stability against temperature, supply, and time drift.
It supports two internal notch configurations via the FO pin: 50 Hz rejection (FO = VCC) or 60 Hz rejection (FO = GND); when driven by an external oscillator (fEOSC), it achieves programmable rejection at fEOSC/2560. Input and reference common-mode voltages are independently configurable from GND to VCC, supporting remote sensing and flexible ratiometric setups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full dynamic range utilization for high-precision measurements. |
| INL | 2 ppm max over temperature-enables 6½-digit DVM-grade accuracy without system-level linearization. |
| RMS Noise | 0.29 ppm of VREF (1.45 µVRMS at 5V reference)-supports sub-microvolt signal resolution in low-frequency sensor applications. |
| Supply Current | 200 µA in conversion mode, 4 µA in autosleep-allows battery-powered instrumentation with multi-year runtime. |
| Common-Mode Rejection | >140 dB DC input CMR-rejects ground loop errors and enables direct connection to bridge sensors without instrumentation amplifiers. |
| Notch Rejection | 110 dB min at 50 Hz or 60 Hz ±2%-eliminates mains interference in industrial environments without external filtering. |
| Reference Range | 0.1 V to VCC differential-permits ratiometric operation with any sensor excitation voltage or remote reference sourcing. |
Pinout & Package
Package: 10-lead plastic MSOP (MS10), 3 mm × 3 mm, 0.5 mm pitch, exposed pad not electrically connected. Thermal resistance θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (1) | Positive supply rail | 2.7–5.5 V operation; requires local 10 µF tantalum + 0.1 µF ceramic bypass to GND for stable conversion performance. |
| REF+ (2), REF– (3) | Differential reference inputs | Accept 0.1 V to VCC differential voltage; common-mode range independent of input, enabling isolated reference topologies. |
| IN+ (4), IN– (5) | Differential analog inputs | Support –0.5×VREF to +0.5×VREF differential range; absolute voltage range extends beyond rails (GND–0.3 V to VCC+0.3 V). |
| GND (6) | Analog/digital ground reference | Single ground pin; must connect to low-impedance ground plane to maintain 140 dB CMR and noise immunity. |
| CS (7) | Active-low chip select | Wakes ADC from sleep (4 µA) into conversion mode; aborts data transfer on rising edge and initiates new conversion. |
| SDO (8) | 3-state serial data output | Outputs 32-bit conversion result MSB-first; high-Z when CS = HIGH; status indicator during conversion/sleep. |
| SCK (9) | Bidirectional serial clock | Auto-configures as input (external SCK mode) or output (internal SCK mode) based on power-up state; weak internal pull-up active in output mode. |
| FO (10) | Frequency control input | Selects internal 50 Hz (FO = VCC), 60 Hz (FO = GND), or simultaneous 50/60 Hz rejection (LTC2411-1 only); accepts external clock up to 500 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma architecture | Single-cycle digital filter settling ensures each output corresponds exactly to its input sample-critical for multiplexed sensor arrays and real-time control loops. |
| Per-conversion auto-calibration | Continuous offset and full-scale correction eliminates drift-related recalibration needs in field-deployed instrumentation and medical devices. |
| Configurable 50/60 Hz notch | Pin-selectable line-frequency rejection via FO pin-no firmware or register writes required, simplifying design for global markets. |
| Independent input/reference common-mode ranges | Allows VINCM and VREFCM to be set anywhere from GND to VCC-enables direct Kelvin sensing, floating bridge interfaces, and remote reference routing. |
| Flexible 3-wire SPI/MICROWIRE interface | Hardware-mode detection (SCK power-up state) eliminates configuration registers-reduces firmware overhead and startup complexity. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
Use Scenario: High-resolution load cell digitization in platform scales and industrial weighing systems operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Direct sigma-delta digitizer for mV-level bridge outputs; provides 24-bit resolution with built-in 110 dB 50/60 Hz rejection to suppress AC mains coupling. Use Value: Eliminates need for external instrumentation amplifier and analog notch filters-reducing BOM count, PCB area, and calibration complexity while maintaining NTEP/EC type approval accuracy. | Use Scenario: Precision force and pressure measurement using quarter-, half-, or full-bridge configurations in test equipment and structural monitoring. IC Role / Device Role / Timing Role: Ratiometric ADC with independent VINCM/VREFCM control-accepts excitation-referenced bridge signals while rejecting common-mode shifts from cable length or thermal gradients. Use Value: Enables direct connection to 100 Ω–10 kΩ bridges without gain stages; 2 ppm INL and 0.29 ppm noise support sub-0.001% full-scale accuracy over temperature. |
| Gas Analyzers | Industrial Process Control |
Use Scenario: Low-power, high-stability digitization of electrochemical or NDIR sensor outputs in portable and fixed gas detection units. IC Role / Device Role / Timing Role: Micropower ADC with 4 µA autosleep current and per-cycle calibration-maintains baseline stability across battery life while rejecting ambient EMI. Use Value: Extends battery life to multi-year operation in Class I Div 2 hazardous locations; 140 dB DC CMR rejects ground noise from pump drivers and solenoid actuators. | Use Scenario: Analog input module for PLCs and distributed control systems measuring temperature (RTD), pressure, and flow in chemical plants and refineries. IC Role / Device Role / Timing Role: Isolated channel ADC with programmable line-frequency rejection-interfaces to 4–20 mA loops or direct sensor inputs in high-noise 50/60 Hz industrial settings. Use Value: Delivers 24-bit integrity without external anti-aliasing or digital post-processing; FO pin configuration allows single BOM for global deployments (EU vs. US mains frequency). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 24-bit delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit, 4-kSPS, integrated PGA and burn-out current sources; requires external reference; no internal oscillator; SPI-only interface. | Better suited for multi-channel RTD/thermocouple systems needing programmable gain; lacks pin-selectable 50/60 Hz notch. | Choose ADS124S08IPWR when PGA flexibility and sensor excitation are required; LTC2411CMS#PBF preferred for fixed-gain, ultra-low-noise, notch-critical applications. |
| MAX11206ETL+ | 24-bit, 10 SPS, 1.7 µA sleep current, internal oscillator, but only 85 dB 50/60 Hz rejection; 12-pin TDFN package. | Lower power and smaller footprint, but insufficient notch depth for high-noise industrial sites where 110 dB rejection is mandatory. | Choose MAX11206ETL+ for ultra-low-power portable instruments; LTC2411CMS#PBF remains optimal where mains interference dominates measurement error budget. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2411CMS#PBF delivers superior 110 dB line-frequency rejection and true no-latency operation-making it the preferred choice for high-accuracy, mains-immune sensor digitization where external filtering or digital post-processing must be avoided.
Availability
LTC2411CMS#PBF is available at Aetrix Electronics and suitable for weight scales, strain gauge transducers, and gas analyzers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2411CMS#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2411CMS#PBF belongs to ADI's legacy Linear Technology precision ADC product line, designed specifically for low-power, high-accuracy sensor signal conditioning in demanding industrial and instrumentation applications.
FAQ
What is the operating temperature range for the LTC2411CMS#PBF?
The LTC2411CMS#PBF is specified for operation from 0°C to 70°C. This commercial-grade temperature range is defined by the "C" grade suffix in the part number and aligns with the LTC2411CMS#PBF's MS10 package qualification. It is suitable for indoor industrial equipment, laboratory instruments, and consumer-grade test gear where ambient conditions remain within this envelope.
Does the LTC2411CMS#PBF require external passive components for its internal oscillator?
No, the LTC2411CMS#PBF does not require external passive components for its internal oscillator. The oscillator is fully integrated and self-contained; no crystals, resonators, or timing capacitors are needed. This simplifies layout, reduces BOM cost, and improves reliability-especially in vibration-prone or thermally cycling environments where external timing components may drift or fail.
Can the LTC2411CMS#PBF interface directly with a 3.3V microcontroller SPI bus?
Yes, the LTC2411CMS#PBF supports 3.3V logic levels. Its digital inputs (CS, FO, SCK) accept VIH ≥ 2.0 V and VIL ≤ 0.6 V at VCC = 3.3V, and its SDO output drives VOH ≥ VCC – 0.5 V and VOL ≤ 0.4 V-fully compatible with standard 3.3V CMOS microcontrollers. No level-shifting circuitry is required when VCC = 3.3V.
How does the FO pin configure 50 Hz vs. 60 Hz rejection on the LTC2411CMS#PBF?
On the LTC2411CMS#PBF, the FO pin selects internal notch frequency: connecting FO to VCC configures 50 Hz rejection (±2%), while connecting FO to GND configures 60 Hz rejection (±2%). This hardware-selectable mode requires no software configuration or register writes-enabling simple, robust design for region-specific EMI compliance without firmware dependencies.
Is the LTC2411CMS#PBF pin-compatible with the LTC2411IMS#PBF?
Yes, the LTC2411CMS#PBF and LTC2411IMS#PBF share identical pinout, package (10-lead MSOP), and electrical interface. The only difference is temperature grade: the "C" version is 0°C to 70°C, while the "I" version is –40°C to 85°C. PCB layouts designed for LTC2411CMS#PBF can accommodate LTC2411IMS#PBF without modification-enabling seamless upgrade to extended temperature operation.
LTC2411CMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 7.5
- 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:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2411CMS#PBF FAQ
1.How can I place an order for LTC2411CMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2411CMS#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 LTC2411CMS#PBF reliable?
The price and inventory of LTC2411CMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2411CMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2411CMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2411CMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2411CMS#PBF?
LTC2411CMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2411CMS#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 LTC2411CMS#PBF?
For technical support, including LTC2411CMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2411CMS#PBF requirements.
6.How does Aetrix verify that LTC2411CMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2411CMS#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 LTC2411CMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC2411CMS#PBF?
All LTC2411CMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2411CMS#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 LTC2411CMS#PBF part is unused and in its original packaging.
Return procedure for LTC2411CMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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