Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Analog Devices Inc. LTC2439-1IGN#TRPBF

Name: LTC2439-1IGN#TRPBF
Brand: Analog Devices Inc.
SKU: LTC2439-1IGN#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: LTC2439-1IGN#TRPBF

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

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

Datasheet:: LTC2439-1IGN#TRPBF.pdf

Description:: IC ADC 16BIT SIGMA-DELTA 28SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,249

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

LTC2439-1IGN#TRPBF from Analog Devices (formerly Linear Technology) is a 16-channel (8-differential), micropower, 16-bit delta-sigma ADC with no latency, 1 µV RMS noise, 0.12 LSB INL, and integrated oscillator. It operates from 2.7V to 5.5V, supports rail-to-rail differential input/reference, and delivers single-cycle settling for multiplexed sensor digitization in industrial instrumentation.

For engineers reviewing the LTC2439-1IGN#TRPBF datasheet, LTC2439-1IGN#TRPBF pinout, LTC2439-1IGN#TRPBF application, or LTC2439-1IGN#TRPBF equivalent, key selection criteria include 50/60 Hz simultaneous notch rejection, 4 µA autosleep current, flexible 0.1V–V_CC reference range, and SPI/MICROWIRE-compatible 4-wire interface with no external timing components required.

Technical Context

The LTC2439-1IGN#TRPBF implements a 3rd-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 provides ≥87 dB rejection at 49–61.2 Hz when using the internal oscillator, or user-defined rejection centered at f_EOSC/2560 with external clock on FO pin.

It supports two serial interface timing modes: internal SCK (SCK pin outputs clock) and external SCK (SCK pin accepts clock), selected automatically at power-up or CS edge. Channel selection is updated via 8-bit SDI word with 3 control bits (EN, SGL, ODD/SIGN) and 5 address bits, enabling dynamic reconfiguration without registers.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	16-bit, no missing codes - guarantees monotonicity and unambiguous code mapping across full input range.
INL	0.12 LSB (typ) - ensures ≤±0.0019% full-scale error for precision weight scale or strain gauge transducer applications.
Noise	1 µV RMS - independent of V_REF; enables effective resolution improvement down to 1.5 µV/LSB at 100 mV reference.
Supply Current	200 µA (conversion), 4 µA (autosleep) - supports battery-powered data loggers with multi-week runtime.
Common-Mode Rejection	≥140 dB DC - rejects ground loop errors and supply ripple in remote sensing configurations.
Notch Rejection	≥87 dB at 50/60 Hz ±2% - eliminates mains interference without external filtering in industrial environments.
Input Range	±0.5 × V_REF, V_REF = 0.1V to V_CC - allows direct digitization of low-level thermocouple or bridge outputs with ratiometric accuracy.

Pinout & Package

Package: 28-lead plastic SSOP (GN), –40°C to +85°C operating temperature range, RoHS-compliant lead-free finish.

Pin/Terminal	Circuit Role	Design Meaning
CH0–CH15 (Pins 1–8, 21–28)	Analog multiplexer inputs	Configurable as 16 single-ended (vs COM) or 8 differential pairs; support ±0.3V beyond rails with 100 nA leakage.
COM (Pin 10)	Single-ended reference node	Serves as IN– for all single-ended channels; common-mode voltage independently set between GND and V_CC.
REF+, REF– (Pins 11, 12)	Differential reference inputs	Accept 0.1V–V_CC differential voltage; common-mode range spans full supply, enabling remote sensing.
FO (Pin 19)	Frequency control input	Selects internal oscillator (50/60 Hz rejection) or external clock (user-defined notch center); no pull-up/down required.
SDI, SDO, SCK, CS (Pins 16–20)	4-wire SPI/MICROWIRE interface	CS-active-low enables output; SCK bidirectional (input/output depending on mode); 19-bit frame includes EOC, sign, and 16-bit result.

Key Features

Feature	Design Value
No-latency delta-sigma architecture	Single-cycle settling eliminates filter delay - critical for real-time multiplexed control loops and fast channel scanning.
Integrated oscillator	Eliminates crystals, capacitors, or external clocks - reduces BOM count and PCB area in space-constrained modules.
Autocalibration per conversion	Compensates for offset and full-scale drift due to temperature, supply variation, and aging - ensures long-term stability without host intervention.
Rail-to-rail differential input/reference	Supports direct connection to sensors with wide common-mode swing (e.g., load cells, RTDs) without level-shifting circuitry.
Flexible channel configuration	Software-selectable 8-diff / 16-SE modes via SDI command - enables one hardware design to serve multiple sensor topologies.

Applications

Weight Scales	Strain Gauge Transducers
Use Scenario: High-precision weighing of industrial loads using 4-wire bridge sensors with millivolt-level outputs. IC Role / Device Role / Timing Role: Direct bridge digitizer with ratiometric reference; converts differential mV signals to 16-bit digital values with <1 µV noise floor. Use Value: Enables 1:30,000+ dynamic range and <0.002% linearity without external amplification or calibration firmware.	Use Scenario: Monitoring mechanical stress in structural health monitoring systems deployed in harsh factory or outdoor environments. IC Role / Device Role / Timing Role: Low-power analog front-end for Wheatstone bridge outputs; rejects 50/60 Hz EMI from nearby motors and lighting. Use Value: Delivers stable measurements over –40°C to +85°C with <0.12 LSB INL drift, eliminating thermal recalibration cycles.
Direct Temperature Measurement	Gas Analyzers
Use Scenario: Cold-junction compensation and linearized thermocouple readout in HVAC and process control panels. IC Role / Device Role / Timing Role: Precision differential ADC with programmable gain-less input; digitizes µV/°C thermocouple EMF directly against stable reference. Use Value: Achieves ±0.5°C accuracy over 0–1000°C range using only internal calibration - no lookup tables or external cold-junction sensors needed.	Use Scenario: Signal conditioning for electrochemical gas sensors requiring ultra-low-noise, high-impedance input and stable reference. IC Role / Device Role / Timing Role: Low-leakage (±100 nA) analog input stage with 140 dB CMRR - preserves weak nA-level sensor currents amid noisy 24V plant wiring. Use Value: Reduces false alarms and improves detection limits by maintaining sub-µV RMS noise floor even with 100 mV reference.

Weight Scales

Strain Gauge Transducers

Use Scenario: High-precision weighing of industrial loads using 4-wire bridge sensors with millivolt-level outputs.

IC Role / Device Role / Timing Role: Direct bridge digitizer with ratiometric reference; converts differential mV signals to 16-bit digital values with <1 µV noise floor.

Use Value: Enables 1:30,000+ dynamic range and <0.002% linearity without external amplification or calibration firmware.

Use Scenario: Monitoring mechanical stress in structural health monitoring systems deployed in harsh factory or outdoor environments.

IC Role / Device Role / Timing Role: Low-power analog front-end for Wheatstone bridge outputs; rejects 50/60 Hz EMI from nearby motors and lighting.

Use Value: Delivers stable measurements over –40°C to +85°C with <0.12 LSB INL drift, eliminating thermal recalibration cycles.

Direct Temperature Measurement

Gas Analyzers

Use Scenario: Cold-junction compensation and linearized thermocouple readout in HVAC and process control panels.

IC Role / Device Role / Timing Role: Precision differential ADC with programmable gain-less input; digitizes µV/°C thermocouple EMF directly against stable reference.

Use Value: Achieves ±0.5°C accuracy over 0–1000°C range using only internal calibration - no lookup tables or external cold-junction sensors needed.

Use Scenario: Signal conditioning for electrochemical gas sensors requiring ultra-low-noise, high-impedance input and stable reference.

IC Role / Device Role / Timing Role: Low-leakage (±100 nA) analog input stage with 140 dB CMRR - preserves weak nA-level sensor currents amid noisy 24V plant wiring.

Use Value: Reduces false alarms and improves detection limits by maintaining sub-µV RMS noise floor even with 100 mV reference.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit multichannel delta-sigma ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADS124S08IPBSR	24-bit resolution, 4kSPS max, integrated PGA and burn-out current sources; requires external reference.	Better suited for high-resolution RTD/thermistor systems needing programmable gain; lacks internal oscillator and 50/60 Hz notch.	Choose ADS124S08IPBSR when higher resolution and sensor excitation are required; LTC2439-1IGN#TRPBF preferred for simpler, lower-power, mains-rejecting designs.
LTC2418CGN#PBF	24-bit version, pin-compatible, same package and interface; higher noise (0.25 µV RMS), 2x conversion time.	Drop-in upgrade path for resolution-critical applications where layout reuse is mandatory and sleep current (6 µA) is acceptable.	LTC2418CGN#PBF offers resolution headroom but trades off speed and power; LTC2439-1IGN#TRPBF delivers optimal balance for 16-bit industrial DAQ.

Compared with ADS124S08IPBSR and LTC2418CGN#PBF, the LTC2439-1IGN#TRPBF uniquely combines 16-bit precision, 1 µV RMS noise, integrated 50/60 Hz rejection, and 4 µA autosleep in a pin-compatible 28-SSOP footprint - making it the most efficient choice for cost-sensitive, noise-immune, battery-aware sensor nodes.

Availability

LTC2439-1IGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, and embedded data acquisition requiring stable component supply, extended temperature operation (–40°C to +85°C), and long-term lifecycle continuity.

Supply support for LTC2439-1IGN#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2439-1IGN#TRPBF belongs to ADI's legacy Linear Technology precision delta-sigma ADC family, designed specifically for low-power, high-accuracy sensor digitization in electrically noisy, thermally variable industrial environments.

FAQ

What is the operating temperature range for the LTC2439-1IGN#TRPBF?

The LTC2439-1IGN#TRPBF is rated for –40°C to +85°C operation, matching the "I" grade specification. This extended range supports deployment in industrial control cabinets, outdoor metering equipment, and automotive under-hood sensing applications where ambient temperatures exceed commercial-grade limits. All key specifications-including INL, noise, and 50/60 Hz rejection-are guaranteed across this full range.

Does the LTC2439-1IGN#TRPBF require external passive components for its oscillator function?

No, the LTC2439-1IGN#TRPBF integrates a precision internal oscillator and requires no external crystals, resonators, or timing capacitors. When the FO pin is tied to GND or V_CC, the device automatically uses this oscillator to achieve simultaneous 50 Hz and 60 Hz notch rejection. This eliminates BOM cost, layout area, and calibration effort associated with external timing elements.

How does the LTC2439-1IGN#TRPBF handle reference voltage flexibility?

The LTC2439-1IGN#TRPBF accepts any differential reference voltage from 0.1 V to V_CC, with independent common-mode ranges for REF+ and REF– spanning GND to V_CC. This enables true ratiometric measurement (e.g., bridge sensors powered from same supply) and remote sensing without level shifters. At 100 mV reference, LSB size is 1.5 µV-ideal for low-level thermocouple or microamp gas sensor outputs.

Can the LTC2439-1IGN#TRPBF be used in single-ended mode, and how is it configured?

Yes, the LTC2439-1IGN#TRPBF supports 16 single-ended channels referenced to the COM pin. Configuration is done via the 3-bit SGL control field in the SDI command: SGL = 1 selects single-ended mode, where CH0–CH15 become IN+ and COM becomes IN–. The full-scale range remains ±0.5 × V_REF, and DC common-mode rejection exceeds 140 dB-ensuring accurate readings even with ground potential differences.

What is the significance of the 19-bit output format of the LTC2439-1IGN#TRPBF?

The LTC2439-1IGN#TRPBF outputs a 19-bit serial word: Bit 18 = EOC (end-of-conversion flag), Bit 17 = dummy (always LOW), Bit 16 = sign, Bits 15–0 = 16-bit result (MSB first). This structure enables real-time status monitoring (EOC) and unambiguous sign/magnitude interpretation without host-side bit manipulation. Overrange and underrange conditions are flagged by concurrent states of Bits 16 and 15-providing immediate fault detection in safety-critical systems.

LTC2439-1IGN#TRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: microPOWER™

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Number of Bits:: 16

Sampling Rate (Per Second):: 6.8

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:: -40°C ~ 85°C

Supplier Device Package:: 28-SSOP

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

LTC2439-1IGN#TRPBF FAQ

1.How can I place an order for LTC2439-1IGN#TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC2439-1IGN#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 LTC2439-1IGN#TRPBF reliable?

The price and inventory of LTC2439-1IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2439-1IGN#TRPBF is usually 5 days.

3.What payment methods are accepted for LTC2439-1IGN#TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2439-1IGN#TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC2439-1IGN#TRPBF?

LTC2439-1IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC2439-1IGN#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 LTC2439-1IGN#TRPBF?

For technical support, including LTC2439-1IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2439-1IGN#TRPBF requirements.

6.How does Aetrix verify that LTC2439-1IGN#TRPBF is sourced from the original manufacturer or authorized distributors?

All LTC2439-1IGN#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 LTC2439-1IGN#TRPBF meets industry standards.

7.What is the process for return or replacement of LTC2439-1IGN#TRPBF?

All LTC2439-1IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2439-1IGN#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 LTC2439-1IGN#TRPBF part is unused and in its original packaging.

Return procedure for LTC2439-1IGN#TRPBF:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…