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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc. LTC2418CGN#PBF

Name: LTC2418CGN#PBF
Brand: Analog Devices Inc.
SKU: LTC2418CGN#PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC2418CGN#PBF

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

Package:: 28-SSOP (0.154", 3.90mm Width)

Datasheet:: LTC2418CGN#PBF.pdf

Description:: IC ADC 24BIT SIGMA-DELTA 28SSOP

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Product details

Overview

LTC2418CGN#PBF from Analog Devices (formerly Linear Technology) is a 16-channel (8-differential), 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 flexible ratiometric sensing via 0.1V–V_CC differential reference input, used in high-precision industrial instrumentation and sensor digitization.

For engineers reviewing the LTC2418CGN#PBF datasheet, LTC2418CGN#PBF pinout, LTC2418CGN#PBF application, or LTC2418CGN#PBF equivalent, key selection considerations include its 110 dB 50/60 Hz notch rejection, 200 µA active supply current, 28-pin SSOP package, 24-bit resolution with no missing codes, and SPI/MICROWIRE-compatible 4-wire interface.

Technical Context

The LTC2418CGN#PBF implements a third-order delta-sigma modulator with decimating FIR filter and on-chip autocalibration that performs offset and full-scale correction every conversion cycle. Its digital filter achieves first nulls at 50 Hz (FO = V_CC) or 60 Hz (FO = GND), or user-defined frequencies via external oscillator (f_EOSC/2560).

It supports programmable input configuration: 16 single-ended or 8 differential channels with bipolar input range of –0.5×V_REF to +0.5×V_REF; VINCM and VREFCM are independently adjustable from GND to V_CC, enabling true remote sensing and wide common-mode rejection (>140 dB DC).

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	24-bit with no missing codes - guarantees monotonicity and full dynamic range utilization.
INL	2 ppm max over temperature - enables sub-ppm-level system accuracy without external trimming.
RMS Noise	0.2 ppm of V_REF - supports <1 µV_RMS noise floor for microvolt-level signal digitization.
Supply Current	200 µA in conversion mode, 4 µA in autosleep - suitable for battery-powered precision data loggers.
Notch Rejection	≥110 dB at 50 Hz or 60 Hz ±2% - eliminates mains interference without external filtering.
Reference Range	0.1 V to V_CC differential - allows direct interfacing with low-voltage sensors and ratiometric bridges.
Common-Mode Rejection	>140 dB DC - rejects ground shifts and cable-induced offsets in remote transducer applications.

Pinout & Package

Package: 28-lead plastic SSOP (GN package), 0°C to 70°C operating temperature range.

Pin/Terminal	Circuit Role	Design Meaning
CH0–CH7 (Pins 21–28)	Analog Input Channel (Single-Ended/Differential)	Positive inputs for first 8 channels; configurable as IN+ in differential pairs with COM or CH8–CH15.
CH8–CH15 (Pins 1–8)	Analog Input Channel (Single-Ended/Differential)	Positive inputs for second 8 channels; enables full 16-channel single-ended or 8-differential operation.
COM (Pin 10)	Common Negative Input	Shared IN– for all single-ended configurations; supports GND-to-V_CC common-mode voltage range.
REF+ / REF– (Pins 11/12)	Differential Reference Inputs	Accept 0.1V–V_CC differential reference; enable ratiometric measurement and remote sensing.
FO (Pin 19)	Frequency Control Input	Selects internal 50 Hz (FO = V_CC) or 60 Hz (FO = GND) notch, or enables external oscillator (f_EOSC = 2.56–500 kHz).
CS (Pin 16)	Active-Low Chip Select	Wakes device from sleep, enables SDO output, and initiates data transfer; HIGH = autosleep mode.
SDO / SCK / SDI (Pins 17/18/20)	4-Wire SPI/MICROWIRE Interface	SDO outputs 32-bit conversion result; SCK is bidirectional clock; SDI accepts channel address bits.

Key Features

Feature	Design Value
No-latency digital filter	Single-cycle settling ensures each conversion output corresponds directly to the selected channel-no filter delay or redundant samples.
Per-conversion autocalibration	Continuous offset and full-scale correction eliminates drift due to temperature, supply variation, and aging-no calibration registers required.
Flexible input configuration	Software-selectable 16 single-ended or 8 differential channels with independent VINCM and VREFCM ranging from GND to V_CC.
Integrated oscillator	Eliminates external crystals/capacitors; supports 50/60 Hz line rejection without component count or layout overhead.
High common-mode rejection	>140 dB DC CMRR enables accurate measurement in noisy industrial environments with ground potential differences.

Applications

Weight Scales	Strain Gauge Transducers
Use Scenario: High-resolution weighing systems measuring load cells with mV/V output under varying ambient conditions. IC Role / Device Role / Timing Role: Direct digitizer for bridge-based sensors; provides 24-bit resolution and 0.2 ppm noise floor to resolve sub-gram changes. Use Value: Eliminates need for external amplification or calibration-full-scale error drift ≤0.03 ppm/°C ensures long-term repeatability.	Use Scenario: Structural health monitoring using bonded foil or semiconductor strain gauges in civil or aerospace infrastructure. IC Role / Device Role / Timing Role: Precision analog front-end with ratiometric reference support; handles low-level differential signals with >140 dB CMRR. Use Value: Enables direct connection to unamplified gauges while rejecting thermal EMF and ground-loop noise in distributed sensor networks.
Gas Analyzers	Industrial Process Control
Use Scenario: Electrochemical or NDIR gas sensors requiring stable, low-drift digitization of weak current/voltage outputs. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC with autosleep mode (4 µA); supports periodic wake-up sampling in battery-operated analyzers. Use Value: 200 µA active current and per-conversion calibration maintain accuracy across temperature swings typical in field-deployed units.	Use Scenario: PLC analog input modules digitizing 4–20 mA loops, thermocouples, and RTDs in factory automation. IC Role / Device Role / Timing Role: Multiplexed 16-channel ADC with 110 dB 50/60 Hz rejection-rejects mains-borne noise in electrically noisy plant floors. Use Value: Single-chip solution reduces BOM count vs. discrete op-amp + ADC + reference stacks; SSOP package supports compact I/O module design.

Weight Scales

Strain Gauge Transducers

Use Scenario: High-resolution weighing systems measuring load cells with mV/V output under varying ambient conditions.

IC Role / Device Role / Timing Role: Direct digitizer for bridge-based sensors; provides 24-bit resolution and 0.2 ppm noise floor to resolve sub-gram changes.

Use Value: Eliminates need for external amplification or calibration-full-scale error drift ≤0.03 ppm/°C ensures long-term repeatability.

Use Scenario: Structural health monitoring using bonded foil or semiconductor strain gauges in civil or aerospace infrastructure.

IC Role / Device Role / Timing Role: Precision analog front-end with ratiometric reference support; handles low-level differential signals with >140 dB CMRR.

Use Value: Enables direct connection to unamplified gauges while rejecting thermal EMF and ground-loop noise in distributed sensor networks.

Gas Analyzers

Industrial Process Control

Use Scenario: Electrochemical or NDIR gas sensors requiring stable, low-drift digitization of weak current/voltage outputs.

IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC with autosleep mode (4 µA); supports periodic wake-up sampling in battery-operated analyzers.

Use Value: 200 µA active current and per-conversion calibration maintain accuracy across temperature swings typical in field-deployed units.

Use Scenario: PLC analog input modules digitizing 4–20 mA loops, thermocouples, and RTDs in factory automation.

IC Role / Device Role / Timing Role: Multiplexed 16-channel ADC with 110 dB 50/60 Hz rejection-rejects mains-borne noise in electrically noisy plant floors.

Use Value: Single-chip solution reduces BOM count vs. discrete op-amp + ADC + reference stacks; SSOP package supports compact I/O module design.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 24-bit multichannel delta-sigma ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADS1256IDBT	24-bit, 8-channel, SPI interface; 30 kSPS max; requires external crystal; 120 µA typical supply current.	Higher speed but lower noise (1 µV_RMS); lacks integrated 50/60 Hz notch and per-cycle autocalibration.	Preferred when higher throughput is needed and external clocking/filtering is acceptable.
MAX11206ETL+	24-bit, 8-channel, SPI interface; 10 SPS; integrated oscillator; 125 µA supply current; 0.15 ppm RMS noise.	Lower channel count (8 vs. 16), same notch capability; smaller 20-pin TQFN package.	Preferred for space-constrained designs where 8-channel capacity suffices and ultra-low noise is critical.

Compared with ADS1256IDBT and MAX11206ETL+, the LTC2418CGN#PBF uniquely delivers 16-channel flexibility, true 0.2 ppm RMS noise, and autonomous 50/60 Hz rejection without external components-making it optimal for low-speed, high-stability industrial sensing where layout simplicity and long-term accuracy are prioritized.

Availability

LTC2418CGN#PBF is available at Aetrix Electronics and suitable for weight scales, strain gauge interfaces, and gas analyzer systems requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for LTC2418CGN#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 precision analog product lines with full technical and manufacturing continuity.

The LTC2418CGN#PBF belongs to Linear's no-latency delta-sigma ADC family, designed specifically for high-accuracy, low-power, multiplexed sensor digitization in industrial, scientific, and test equipment where calibration stability and EMI immunity are critical.

FAQ

What is the maximum number of analog input channels supported by the LTC2418CGN#PBF?

The LTC2418CGN#PBF supports up to 16 single-ended or 8 fully differential analog input channels. Pins CH0–CH7 (21–28) and CH8–CH15 (1–8) provide full 16-channel access, with COM (Pin 10) serving as the shared negative input for single-ended configurations. This matches the LTC2418 designation-distinct from the 8-channel LTC2414CGN#PBF.

Does the LTC2418CGN#PBF require an external crystal or oscillator?

No, the LTC2418CGN#PBF includes a fully integrated oscillator and requires no external frequency-setting components. The FO pin selects between internal 50 Hz (FO = V_CC) or 60 Hz (FO = GND) notch modes, or enables external clocking (2.56–500 kHz) for custom rejection frequencies-eliminating BOM cost and layout complexity.

What reference voltage range does the LTC2418CGN#PBF support?

The LTC2418CGN#PBF accepts a differential reference voltage (REF+ – REF–) from 0.1 V to V_CC, with REF+ and REF– independently ranging from GND to V_CC (subject to ≥0.1 V differential). This enables direct ratiometric interfacing with low-voltage sensors, bridge transducers, and isolated references without level-shifting circuitry.

How does the LTC2418CGN#PBF achieve 110 dB 50/60 Hz rejection without external filters?

The LTC2418CGN#PBF achieves ≥110 dB 50/60 Hz rejection through its on-chip third-order delta-sigma modulator and decimating FIR filter, clocked by a highly stable internal oscillator. When FO = V_CC or GND, the digital filter's first null is precisely aligned to 50 Hz or 60 Hz ±2%, rejecting mains interference inherently-no external passive or active filtering is needed.

What power supply voltage range is valid for the LTC2418CGN#PBF?

The LTC2418CGN#PBF operates from a single supply of 2.7 V to 5.5 V. Absolute maximum rating is –0.3 V to 7 V, but functional operation and specified performance (including INL, noise, and rejection) are guaranteed only within the 2.7 V–5.5 V range across the 0°C to 70°C temperature grade of the LTC2418CGN#PBF.

LTC2418CGN#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:: 8, 16

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:: 0°C ~ 70°C

Supplier Device Package:: 28-SSOP

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

LTC2418CGN#PBF FAQ

1.How can I place an order for LTC2418CGN#PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC2418CGN#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 LTC2418CGN#PBF reliable?

The price and inventory of LTC2418CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2418CGN#PBF is usually 5 days.

3.What payment methods are accepted for LTC2418CGN#PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2418CGN#PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC2418CGN#PBF?

LTC2418CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC2418CGN#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 LTC2418CGN#PBF?

For technical support, including LTC2418CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2418CGN#PBF requirements.

6.How does Aetrix verify that LTC2418CGN#PBF is sourced from the original manufacturer or authorized distributors?

All LTC2418CGN#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 LTC2418CGN#PBF meets industry standards.

7.What is the process for return or replacement of LTC2418CGN#PBF?

All LTC2418CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2418CGN#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 LTC2418CGN#PBF part is unused and in its original packaging.

Return procedure for LTC2418CGN#PBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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