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Analog Devices Inc. LTC2414IGN#PBF
- Part No.:
- LTC2414IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2414IGN#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:723
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Product details
Overview
LTC2414IGN#PBF from Analog Devices (formerly Linear Technology) is an 8-channel, 24-bit no-latency delta-sigma ADC with integrated oscillator, 2 ppm INL, 0.2 ppm RMS noise, and single-cycle settling. It operates from 2.7V to 5.5V and supports both differential (4-channel) and single-ended (8-channel) inputs for precision sensor digitization in industrial instrumentation and weight scales.
For engineers reviewing the LTC2414IGN#PBF datasheet, LTC2414IGN#PBF pinout, LTC2414IGN#PBF application, or LTC2414IGN#PBF equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts, and supply-ready availability details - all specific to the –40°C to 85°C industrial-grade SSOP-28 variant.
Technical Context
The LTC2414IGN#PBF implements a 3rd-order delta-sigma modulator with decimating FIR filter, enabling true no-latency operation: each conversion result is valid immediately after completion, with no filter settling delay. Its internal oscillator eliminates external timing components and provides configurable 50 Hz or 60 Hz notch rejection via the FO pin.
It supports flexible reference architecture: differential reference input (REF+/REF–) accepts 0.1 V to VCC, while input common mode (VINCM) and reference common mode (VREFCM) are independently set from GND to VCC. DC common mode rejection exceeds 140 dB, and normal-mode rejection reaches 110 dB at line frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes - guarantees monotonicity and full dynamic range utilization across temperature. |
| INL | 2 ppm max over full temperature range - ensures sub-LSB linearity error in 24-bit systems without calibration. |
| RMS Noise | 0.2 ppm of VREF - enables <1 µV RMS noise floor with 5 V reference, critical for microvolt-level sensor signals. |
| Supply Current | 200 µA in conversion mode, 4 µA in autosleep - supports battery-powered or energy-constrained designs. |
| Input Range | ±0.5 × VREF bipolar differential - allows direct ratiometric measurement with bridge sensors or thermocouples. |
| Common Mode Rejection | 140 dB DC - rejects ground offsets and PCB layout-induced common-mode interference in noisy industrial environments. |
| Notch Rejection | 110 dB min at 50/60 Hz ±2% - suppresses mains-borne interference without external filtering or software post-processing. |
Pinout & Package
Package: 28-lead plastic SSOP (GN package), industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 21–28, 1–8) | Analog input channels | Supports 8 single-ended or 4 differential inputs; CH8–CH15 unconnected on LTC2414 - defines channel count limitation vs LTC2418. |
| COM (Pin 10) | Common negative input | Serves as IN– for all single-ended configurations; voltage range extends beyond rails (GND–0.3V to VCC+0.3V) for flexibility with transducer outputs. |
| REF+/REF– (Pins 11/12) | Differential reference inputs | Accept 0.1 V to VCC differential span; independent common-mode setting enables remote sensing and ratiometric accuracy. |
| FO (Pin 19) | Frequency control | Selects 50 Hz (FO = VCC), 60 Hz (FO = GND), or user-defined notch (external clock) - configures digital filter null without firmware. |
| CS (Pin 16) | Chip select | Active-low wake-up signal; high-Z SDO when CS = HIGH enables ultra-low-power sleep (4 µA) between conversions. |
| SDO/SCK/SDI (Pins 17/18/20) | 4-wire SPI-compatible interface | Three-state SDO, bidirectional SCK (input/output depending on mode), and SDI for channel address - requires no configuration registers. |
Key Features
| Feature | Design Value |
|---|---|
| No latency output | Single-cycle filter settling ensures every conversion yields a valid, calibrated 32-bit result - eliminates multiplexing dead time and simplifies real-time channel switching. |
| Auto-calibration per cycle | Continuous offset and full-scale correction removes drift due to temperature, supply variation, or aging - maintains 2.5 µV offset and 2.5 ppm full-scale error stability. |
| Flexible input configuration | Software-selectable single-ended (8 ch) or differential (4 ch) mode using SDI address bits - adapts to diverse sensor topologies without hardware change. |
| Rail-to-rail common mode | VINCM and VREFCM independently adjustable from GND to VCC - supports grounded sensors, floating bridges, and wide-range transducers without level-shifting circuitry. |
| Integrated oscillator | Eliminates crystals, capacitors, or external clocks - reduces BOM count, board area, and EMI risk while guaranteeing precise 50/60 Hz rejection. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
Use Scenario: High-precision load cell readout in platform scales and industrial weighing systems requiring 0.001% resolution and long-term stability. IC Role / Device Role / Timing Role: Direct digitizer for mV/V bridge outputs; uses differential inputs, internal reference rejection, and auto-calibration to maintain accuracy across temperature cycles. Use Value: Achieves ≤2 ppm INL and 0.2 ppm noise with 5 V reference - resolves sub-microvolt signals from 350 Ω strain gauges without external amplification or filtering. | Use Scenario: Static and dynamic force measurement in structural health monitoring, material testing, and factory automation. IC Role / Device Role / Timing Role: Low-drift ADC capturing low-frequency analog outputs from bonded foil or semiconductor strain gauges; leverages 140 dB CMRR to reject mechanical ground loops. Use Value: Enables direct connection to Wheatstone bridges with ±0.5 × VREF input range and ratiometric reference - eliminates gain drift errors and simplifies calibration traceability. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: Cold-junction compensation and thermocouple linearization in process control systems operating from –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Precision cold-junction sensor digitizer; uses COM pin as reference node and supports thermocouple input directly on CH0/CH1 with programmable gain emulation via reference scaling. Use Value: 200 µA supply current and 4 µA autosleep enable battery-backed operation; 110 dB 50/60 Hz rejection prevents mains-coupled noise from corrupting µV-level thermocouple EMF. | Use Scenario: Electrochemical gas sensor signal conditioning in portable air quality monitors and industrial safety equipment. IC Role / Device Role / Timing Role: Low-noise front-end ADC for picoampere-current-to-voltage converters; uses differential input mode to reject common-mode leakage currents and EMI. Use Value: 0.2 ppm RMS noise and 2.5 µV offset error ensure detection of sub-nA sensor currents - critical for ppb-level CO, NO₂, or O₃ concentration resolution. |
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 |
|---|---|---|---|
| ADS124S08IPBS | 24-bit, 4-kSPS, integrated PGA and burnout current sources; SPI interface; 32-QFN package. | Includes programmable gain amplifier and sensor diagnostics - suited for RTD/thermistor arrays but adds complexity for simple bridge inputs. | Choose ADS124S08IPBS when PGA gain flexibility and sensor excitation are required; LTC2414IGN#PBF offers lower noise floor and simpler interface for fixed-gain, low-drift applications. |
| MAX11206ETJ+ | 24-bit, 10 SPS, internal reference only (no external REF±); 24-TQFN; 16-channel mux. | Lacks differential reference input and rail-to-rail common mode - limits ratiometric accuracy and remote sensing capability. | Choose MAX11206ETJ+ for cost-sensitive, space-constrained designs where external reference independence is not needed; LTC2414IGN#PBF provides superior flexibility for precision sensor interfaces. |
Compared with ADS124S08IPBS and MAX11206ETJ+, the LTC2414IGN#PBF delivers the lowest RMS noise (0.2 ppm), highest DC common-mode rejection (140 dB), and true differential reference support - making it optimal for metrology-grade bridge and thermocouple digitization where absolute accuracy and long-term stability are prioritized over integrated features or channel count.
Availability
LTC2414IGN#PBF is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and weight scale applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2414IGN#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 acquired Linear Technology in 2017 and maintains its legacy high-precision analog portfolio, emphasizing metrology-grade performance, low power, and robustness for industrial and scientific applications.
The LTC2414IGN#PBF belongs to Linear's no-latency delta-sigma ADC family, designed specifically for direct sensor digitization in environments demanding ultra-low drift, high line-rejection, and minimal external components - targeting weigh scales, strain gauge systems, and temperature measurement.
FAQ
What is the operating temperature range of the LTC2414IGN#PBF?
The LTC2414IGN#PBF is rated for –40°C to +85°C, as indicated by the "I" grade in its part number. This industrial temperature range is validated across all electrical specifications including INL (2 ppm), noise (0.2 ppm RMS), and supply current (200 µA typical in conversion mode), ensuring reliable operation in harsh environments such as factory floors or outdoor instrumentation enclosures.
Does the LTC2414IGN#PBF require external passive components for oscillator operation?
No, the LTC2414IGN#PBF integrates a precision internal oscillator and requires no external crystals, capacitors, or resistors for clock generation. The FO pin selects between 50 Hz (FO = VCC) or 60 Hz (FO = GND) notch frequencies, and the oscillator automatically calibrates to maintain ±2% accuracy - eliminating BOM cost, board space, and frequency tolerance risks associated with discrete timing components.
How many analog input channels does the LTC2414IGN#PBF support, and what configurations are possible?
The LTC2414IGN#PBF supports 8 analog input pins (CH0–CH7), configurable as either 8 single-ended channels or 4 differential pairs. Unlike the LTC2418, CH8–CH15 are unconnected on this device. Channel selection is controlled via SDI during the data output phase, and the COM pin serves as the common negative input for single-ended mode - enabling flexible sensor interfacing without hardware rework.
What reference voltage options does the LTC2414IGN#PBF support, and how does it handle ratiometric measurements?
The LTC2414IGN#PBF accepts a fully differential external reference (REF+/REF–) ranging from 0.1 V to VCC, with independent common-mode settings for VINCM and VREFCM (both GND to VCC). This architecture enables true ratiometric operation: when the same supply powers both the sensor bridge and REF+/REF–, gain errors cancel out - preserving accuracy even with supply variation, making it ideal for battery-operated or unregulated systems using the LTC2414IGN#PBF.
Is the LTC2414IGN#PBF pin-compatible with the LTC2418IGN#PBF?
No, the LTC2414IGN#PBF is not pin-compatible with the LTC2418IGN#PBF despite sharing the same 28-lead SSOP package and pinout layout. While both devices use identical physical pin assignments, the LTC2414IGN#PBF leaves CH8–CH15 (Pins 1–8) unconnected, whereas the LTC2418IGN#PBF utilizes them as active inputs. Interchanging them without schematic and layout review will result in undefined behavior or loss of 8 channels - always verify channel mapping and datasheet revision before substitution.
LTC2414IGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 7.5
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Single Ended
- 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:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2414IGN#PBF FAQ
1.How can I place an order for LTC2414IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2414IGN#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 LTC2414IGN#PBF reliable?
The price and inventory of LTC2414IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2414IGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2414IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2414IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2414IGN#PBF?
LTC2414IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2414IGN#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 LTC2414IGN#PBF?
For technical support, including LTC2414IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2414IGN#PBF requirements.
6.How does Aetrix verify that LTC2414IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2414IGN#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 LTC2414IGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2414IGN#PBF?
All LTC2414IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2414IGN#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 LTC2414IGN#PBF part is unused and in its original packaging.
Return procedure for LTC2414IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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