My Inquiry
My Account
Analog Devices Inc. LTC2493CDE#TRPBF
- Part No.:
- LTC2493CDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC2493CDE#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,324
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2493CDE#TRPBF from Analog Devices (formerly Linear Technology) is a 24-bit, 4-channel (2-differential) delta-sigma ADC with I²C interface, Easy Drive input current cancellation, integrated temperature sensor, and no-latency digital filtering. It operates from 2.7V to 5.5V, delivers 600nV RMS noise, 2ppm INL, and supports simultaneous 50Hz/60Hz rejection - ideal for precision industrial sensor digitization in data acquisition systems.
For engineers reviewing the LTC2493CDE#TRPBF datasheet, LTC2493CDE#TRPBF pinout, LTC2493CDE#TRPBF application, or LTC2493CDE#TRPBF equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and noise performance, real-world application mappings, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The LTC2493CDE#TRPBF implements a 3rd-order delta-sigma modulator with decimating FIR filter and auto-calibration engine that performs full offset and full-scale correction every conversion cycle. Its patented Easy Drive architecture eliminates differential input current errors without on-chip buffers, enabling rail-to-rail analog inputs with source impedances up to 10MΩ while maintaining DC accuracy.
It features a programmable I²C address (9 options + global sync), internal oscillator (307.2kHz), and flexible channel configuration: any combination of single-ended (CH0–CH3 vs COM) or differential (e.g., CH0–CH1) inputs. Conversion time is 131–164ms in normal mode and 66–82ms in 2× speed mode, with output rates from 7.5SPS to 15SPS.
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 | 2ppm of VREF - enables ±0.0002% linearity error over full scale, critical for calibration-grade instrumentation. |
| Offset Error | ±0.5µV typical - allows direct digitization of µV-level thermocouple or strain gauge outputs without zero-adjust circuitry. |
| RMS Noise | 0.6µV RMS - supports 21.5 effective number of bits (ENOB) at 7.5SPS, suitable for 0.1°C temperature resolution. |
| Input Common Mode Range | GND to VCC - permits direct interfacing with sensors operating outside reference rails, e.g., 4–20mA loop-powered transducers. |
| Power Supply | 2.7V to 5.5V, 160µA typical - enables battery-powered portable meters and low-power IoT edge nodes. |
| Temperature Sensor Accuracy | ±2°C absolute, 1/30°C resolution - provides on-chip cold-junction compensation or system health monitoring without external sensors. |
Pinout & Package
14-lead (4mm × 3mm) plastic DFN package with exposed pad (Pin 15 = GND). Pin 15 must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| fO (Pin 1) | Frequency control input | Selects internal oscillator (GND) or external clock; determines output rate and 50/60Hz rejection null placement. |
| CA0, CA1 (Pins 2, 3) | I²C address configuration | Three-state pins (LOW/HIGH/floating) set one of nine device addresses for multi-drop bus operation. |
| SCL (Pin 4) | I²C serial clock input | Slave-only interface; rising edge samples SDA input, falling edge drives SDA output - no internal clock generation required. |
| SDA (Pin 5) | I²C bidirectional data line | Open-drain output during read; high-impedance input during write - requires external pull-up to VCC. |
| GND (Pin 6) | Analog/digital ground reference | Common return for all analog and digital circuits; must connect to low-impedance ground plane. |
| COM (Pin 7) | Common negative input | Shared IN– for all single-ended channels; supports rail-to-rail common-mode voltage (GND to VCC). |
| CH0–CH3 (Pins 8–11) | Analog input channels | Configurable as single-ended (vs COM) or differential pairs (e.g., CH0–CH1); each has 11pF sampling capacitance. |
| VCC (Pin 12) | Positive supply | 2.7V–5.5V operation; requires 10µF tantalum + 0.1µF ceramic bypass close to pin for stable conversion. |
| REF+, REF– (Pins 13, 14) | Differential reference inputs | Set full-scale range (0.1V ≤ VREF ≤ VCC); independent of input common-mode - enables ratiometric or absolute measurements. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency conversion | Digital filter settles in one cycle after channel change - first reading post-mux switch is fully accurate, eliminating dead-time in multiplexed systems. |
| Easy Drive input current cancellation | Zero differential input current - removes RC network settling errors and enables direct connection to high-impedance pH electrodes or piezoresistive sensors. |
| Integrated temperature sensor | 1/30°C resolution, ±2°C absolute accuracy - provides on-chip cold-junction compensation for thermocouples without external components. |
| Programmable 50Hz/60Hz rejection | Simultaneous dual-frequency notch - suppresses both AC power-line interference sources in global deployments without hardware changes. |
| Auto-calibration per conversion | Continuous offset and full-scale correction - eliminates drift-induced recalibration cycles in field-deployed equipment over temperature and time. |
Applications
| Industrial Process Monitoring | High-Precision Temperature Measurement |
|---|---|
Use Scenario: Continuous monitoring of pressure, flow, and level transmitters in chemical plant control loops. IC Role / Device Role / Timing Role: Primary ADC digitizing 4–20mA loop outputs and RTD/thermocouple signals with cold-junction compensation. Use Value: 24-bit resolution and 600nV noise enable detection of sub-0.01% process deviations; simultaneous 50/60Hz rejection ensures immunity across regional grid frequencies. |
Use Scenario: Embedded temperature logging in medical diagnostic equipment requiring traceable calibration. IC Role / Device Role / Timing Role: Dual-role ADC: digitizes external Pt100 sensors via CH0–CH1 differential pair while using internal sensor for ambient reference. Use Value: ±2°C on-chip sensor accuracy and 1/30°C resolution allow self-compensated readings; no-latency output enables real-time thermal safety interlocks. |
| Portable Data Acquisition | Strain Gauge & Load Cell Interface |
Use Scenario: Battery-powered handheld multimeter with 4-channel analog front-end for voltage, current, resistance, and temperature. IC Role / Device Role / Timing Role: Single-chip ADC handling all measurement modes; leverages Easy Drive to eliminate buffer op-amps and reduce BOM count. Use Value: 160µA typical supply current extends battery life; rail-to-rail input range accepts ±10V inputs directly; I²C simplifies microcontroller integration. |
Use Scenario: Structural health monitoring node measuring microstrain in bridges or aircraft components using quarter-bridge configurations. IC Role / Device Role / Timing Role: Low-noise ADC digitizing mV-level Wheatstone bridge outputs with programmable gain via external resistor networks. Use Value: 0.6µV RMS noise resolves <1µε strain; auto-calibration maintains accuracy over 10+ year deployments; GND-to-VCC common mode accommodates floating bridge supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1248IPWR | 24-bit, 4-channel, SPI interface; no integrated temp sensor; 1.8V–5.25V supply; 120nV RMS noise at 10SPS. | Requires external temperature sensor for cold-junction compensation; SPI interface demands more MCU GPIOs than I²C. | Preferred when lower noise floor and SPI-based system architecture exist; not drop-in due to interface and feature differences. |
| MAX11206ETL+ | 24-bit, 8-channel, I²C interface; no integrated temp sensor; 2.7V–3.6V supply only; 570nV RMS noise at 10SPS. | Higher channel count but narrower supply range; lacks on-chip oscillator - requires external clock for precise 50/60Hz rejection. | Valid for space-constrained 3.3V systems needing >4 channels; requires redesign of clocking and thermal compensation circuitry. |
Compared with ADS1248IPWR and MAX11206ETL+, the LTC2493CDE#TRPBF uniquely combines I²C simplicity, integrated temperature sensing, simultaneous 50/60Hz rejection, and rail-to-rail input capability - making it optimal for compact, self-contained sensor nodes where board area and component count are critical.
Availability
LTC2493CDE#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, structural health monitoring, and medical diagnostics requiring stable component supply across extended product lifecycles.
Supply support for LTC2493CDE#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2493CDE#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in environments demanding long-term stability, noise immunity, and minimal external component count.
FAQ
What is the operating temperature range for the LTC2493CDE#TRPBF?
The LTC2493CDE#TRPBF is specified for 0°C to 70°C ambient operation, matching the 'C' grade designation in its part number. This range covers commercial and light industrial applications where ambient conditions remain within controlled environments. The device's internal temperature sensor provides ±2°C absolute accuracy across this span, supporting reliable cold-junction compensation without external calibration.
Does the LTC2493CDE#TRPBF require external components for basic operation?
Yes - the LTC2493CDE#TRPBF requires a 10µF tantalum capacitor and 0.1µF ceramic capacitor between VCC and GND, plus pull-up resistors on SDA and SCL lines for I²C communication. No external op-amps or buffers are needed due to Easy Drive technology, but reference decoupling (e.g., 100nF across REF+/REF–) is recommended for optimal noise performance in precision applications.
How does the Easy Drive technology in the LTC2493CDE#TRPBF improve sensor interface design?
Easy Drive technology in the LTC2493CDE#TRPBF cancels differential input current at the sampling network level, eliminating settling errors caused by external RC filters or high-impedance sensors like pH electrodes or thermistors. This allows direct connection without buffer amplifiers, reducing component count, board area, and potential drift sources - while preserving 24-bit accuracy and 600nV noise performance.
Can the LTC2493CDE#TRPBF measure both external signals and its internal temperature simultaneously?
No - the LTC2493CDE#TRPBF operates in either external signal mode (using CH0–CH3 inputs) or internal temperature sensor mode, selected via configuration register. It cannot perform concurrent measurements. However, rapid channel switching enables interleaved sampling (e.g., temperature every 10th conversion) with full accuracy preserved on each reading due to no-latency filtering.
What I²C address options are supported by the LTC2493CDE#TRPBF?
The LTC2493CDE#TRPBF supports nine unique I²C addresses via CA0 and CA1 pins, configured as LOW, HIGH, or floating (high-impedance). This enables up to nine devices on a single bus without address conflict. Additionally, a global address (0x00) allows synchronized START/STOP commands across multiple LTC2493CDE#TRPBF units for time-aligned sampling in distributed sensor arrays.
LTC2493CDE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 15
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- 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:
- PGA, Selectable Address, Temperature Sensor
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 14-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2493CDE#TRPBF FAQ
1.How can I place an order for LTC2493CDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2493CDE#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 LTC2493CDE#TRPBF reliable?
The price and inventory of LTC2493CDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2493CDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2493CDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2493CDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2493CDE#TRPBF?
LTC2493CDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2493CDE#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 LTC2493CDE#TRPBF?
For technical support, including LTC2493CDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2493CDE#TRPBF requirements.
6.How does Aetrix verify that LTC2493CDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2493CDE#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 LTC2493CDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2493CDE#TRPBF?
All LTC2493CDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2493CDE#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 LTC2493CDE#TRPBF part is unused and in its original packaging.
Return procedure for LTC2493CDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2493CDE#TRPBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
