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Analog Devices Inc. LTC2411IMS#PBF
- Part No.:
- LTC2411IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2411IMS#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,787
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Product details
Overview
LTC2411IMS#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 MSOP-10 package. It operates from 2.7V to 5.5V, delivers single-cycle settling, and supports 50/60 Hz notch filtering via pin-selectable FO configuration - ideal for precision weight scales and strain gauge transducers.
For engineers reviewing the LTC2411IMS#PBF datasheet, LTC2411IMS#PBF pinout, LTC2411IMS#PBF application, or LTC2411IMS#PBF equivalent, key selection criteria include its 24-bit no-latency architecture, ±0.5VREF differential input range, GND-to-VCC common-mode flexibility, 110 dB 50/60 Hz normal-mode rejection (LTC2411 variant), and 4 µA autosleep current - all validated for industrial sensor digitization under –40°C to +85°C.
Technical Context
The LTC2411IMS#PBF implements a decimating FIR-based ∆Σ modulator with auto-calibrating offset and full-scale correction in every conversion cycle. Its internal oscillator eliminates external timing components and enables fixed 50 Hz or 60 Hz notch filtering depending on FO pin state (GND or VCC).
It uses a 3-wire SPI/MICROWIRE-compatible interface with bidirectional SCK and tri-state SDO, supporting both internal clock (SCK output) and external clock (SCK input) modes determined at power-up. The digital filter settles in one conversion cycle, ensuring no latency between analog step and valid output code.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes - guarantees monotonicity and full dynamic range utilization in high-precision measurement. |
| INL | 2 ppm max over temperature - ensures linearity error ≤ ±0.0002% of full scale for metrology-grade accuracy. |
| RMS Noise | 0.29 ppm of VREF - enables <1 µVRMS noise floor with 5 V reference, critical for sub-microvolt signal resolution. |
| Supply Current | 200 µA in conversion mode, 4 µA in autosleep - supports battery-powered instrumentation with multi-year runtime. |
| Common-Mode Rejection | 140 dB DC - rejects shared-mode interference from noisy industrial grounds without external amplification. |
| Normal-Mode Rejection | 110 dB min at 50/60 Hz ±2% - suppresses mains-borne noise without external notch filters or synchronous sampling. |
| Reference Range | 0.1 V to VCC differential - allows ratiometric sensing with any stable reference, including bridge excitation voltages. |
Pinout & Package
Package: 10-lead plastic MSOP (MS10), –40°C to +85°C operating temperature range, θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (1) | Positive supply input | 2.7–5.5 V operation; requires local 10 µF tantalum + 0.1 µF ceramic bypass to GND for low-noise performance. |
| REF+ (2), REF– (3) | Differential reference inputs | Accept 0.1 V to VCC differential voltage; VREFCM independently set from GND to VCC for remote sensing. |
| IN+ (4), IN– (5) | Differential analog inputs | Support –0.5VREF to +0.5VREF differential range; common-mode voltage (VINCM) independently adjustable from GND to VCC. |
| GND (6) | Analog/digital ground | Low-impedance connection to system ground plane required 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 if toggled during SDO readout. |
| SDO (8) | 3-state serial data output | Outputs 32-bit conversion result; high-Z when CS = HIGH; status indicator during conversion/sleep when CS = LOW. |
| SCK (9) | Bidirectional serial clock | Functions as output (internal clock mode) or input (external clock mode); mode latched at power-up or CS falling edge. |
| FO (10) | Frequency control input | Selects 50 Hz (FO = VCC), 60 Hz (FO = GND), or user-defined notch (external oscillator) - determines filter null location and conversion time. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency ∆Σ architecture | Single-cycle digital filter settling ensures each output corresponds exactly to its input sample - essential for multiplexed sensor arrays. |
| Auto-calibration per conversion | Continuous offset and full-scale correction eliminates drift-induced errors over time, temperature, and supply variation. |
| Flexible common-mode handling | Independent VINCM and VREFCM ranges (GND to VCC) enable direct connection to unbuffered bridges and thermocouples without level-shifting circuitry. |
| Programmable line-frequency rejection | Pin-selectable 50/60 Hz notch via FO pin - no firmware or register writes needed; maintains 110 dB rejection without external components. |
| True 3-wire SPI compatibility | Operates with standard microcontroller SPI peripherals using CS/SCK/SDO - no dedicated protocol engine or software overhead required. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
Use Scenario: High-resolution weighing in commercial and industrial platforms with AC mains noise exposure. IC Role / Device Role / Timing Role: Direct digitizer of millivolt-level bridge outputs; provides 24-bit resolution with built-in 50/60 Hz rejection. Use Value: Eliminates need for external instrumentation amplifiers and analog notch filters - reduces BOM count and layout area while maintaining NTEP-class accuracy. | Use Scenario: Precision force and pressure measurement in test equipment and structural monitoring systems. IC Role / Device Role / Timing Role: Ratiometric ADC interfacing to 350 Ω–10 kΩ Wheatstone bridges; supports remote excitation and sensing. Use Value: GND-to-VCC common-mode range allows direct bridge connection without level shifters; 2 ppm INL ensures traceable calibration across temperature. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: Cold-junction compensation and RTD/thermistor digitization in environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC for µV/°C thermocouple signals and 2-/3-/4-wire RTDs. Use Value: 4 µA autosleep current extends battery life in wireless sensor nodes; 0.29 ppm RMS noise enables <0.01°C resolution with Pt100 sensors. | Use Scenario: Electrochemical gas sensor signal conditioning in portable safety analyzers. IC Role / Device Role / Timing Role: Digitizing low-current, high-impedance sensor outputs with ultra-low noise and high CMRR. Use Value: 140 dB DC common-mode rejection suppresses EMI from onboard pumps and heaters; differential input rejects cable-induced noise in long sensor leads. |
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. | Optimized for multi-channel sensor arrays with programmable gain; lacks pin-selectable 50/60 Hz rejection. | Choose ADS124S08IPWR when PGA flexibility and channel count outweigh need for autonomous line-frequency rejection. |
| MAX11206ETL+ | 24-bit, 10 SPS, 2.5 µA sleep current, internal reference; no FO pin for notch selection; 100 dB 50/60 Hz rejection. | Targeted at ultra-low-power portable meters; lower rejection margin and no differential reference support. | Choose MAX11206ETL+ only for space-constrained, single-supply battery devices where 100 dB rejection suffices. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2411IMS#PBF uniquely combines pin-configurable 110 dB 50/60 Hz rejection, differential reference capability, and true no-latency operation - making it optimal for standalone, high-stability bridge and thermocouple digitizers without MCU intervention.
Availability
LTC2411IMS#PBF is available at Aetrix Electronics and suitable for weight scales, strain gauge transducers, and direct temperature measurement requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC2411IMS#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 LTC2411IMS#PBF belongs to ADI's legacy Linear Technology precision ADC product line, designed specifically for low-power, high-accuracy sensor digitization in harsh electrical environments - emphasizing ease of use, self-calibration, and robust noise immunity.
FAQ
What is the operating temperature range of the LTC2411IMS#PBF?
The LTC2411IMS#PBF is rated for –40°C to +85°C operation, as indicated by the "I" grade suffix in its part number. This extended industrial temperature range ensures reliable performance in factory automation, outdoor instrumentation, and vehicle-mounted sensor systems where ambient conditions vary widely. All key specifications - including INL, noise, and rejection ratios - are guaranteed across this full range.
How does the FO pin configure line-frequency rejection in the LTC2411IMS#PBF?
The FO pin on the LTC2411IMS#PBF selects the digital filter's first null frequency: connecting FO to GND configures 60 Hz rejection, connecting FO to VCC configures 50 Hz rejection, and driving FO with an external oscillator sets rejection at fEOSC/2560. This pin-based configuration requires no software or register writes, enabling hardware-only adaptation to regional AC power standards without firmware changes.
Can the LTC2411IMS#PBF operate with a 3.3 V supply and a 2.5 V reference?
Yes, the LTC2411IMS#PBF fully supports 3.3 V operation with a 2.5 V differential reference (REF+ = 2.5 V, REF– = GND). Its input common-mode range (GND to VCC) and reference range (0.1 V to VCC) allow this configuration. At 3.3 V, typical supply current remains 200 µA in conversion mode and 4 µA in autosleep, preserving low-power operation while delivering 24-bit resolution and 2 ppm INL.
Does the LTC2411IMS#PBF require external passive components for basic operation?
No external passive components are required for core ADC functionality. The LTC2411IMS#PBF integrates a precision oscillator, eliminating crystals or RC networks. Only two bypass capacitors (10 µF tantalum + 0.1 µF ceramic) on VCC are mandatory for noise suppression. No external filters, amplifiers, or reference buffers are needed - enabling direct sensor-to-digital conversion with minimal external circuitry.
What is the meaning of "no latency" in the LTC2411IMS#PBF datasheet?
"No latency" means the LTC2411IMS#PBF's digital filter settles in exactly one conversion cycle - the 32-bit output corresponds precisely to the analog input sampled during that cycle, with no delay, averaging, or redundant samples. Unlike conventional ∆Σ converters requiring multiple cycles to settle after an input step, the LTC2411IMS#PBF delivers immediate, accurate results - critical for multiplexed multi-sensor systems and real-time control loops.
LTC2411IMS#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2411IMS#PBF FAQ
1.How can I place an order for LTC2411IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2411IMS#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 LTC2411IMS#PBF reliable?
The price and inventory of LTC2411IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2411IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2411IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2411IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2411IMS#PBF?
LTC2411IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2411IMS#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 LTC2411IMS#PBF?
For technical support, including LTC2411IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2411IMS#PBF requirements.
6.How does Aetrix verify that LTC2411IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2411IMS#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 LTC2411IMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC2411IMS#PBF?
All LTC2411IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2411IMS#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 LTC2411IMS#PBF part is unused and in its original packaging.
Return procedure for LTC2411IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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