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Analog Devices Inc. LTC2486CDE#TRPBF
- Part No.:
- LTC2486CDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC2486CDE#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
LTC2486CDE#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 4-channel (2-differential) delta-sigma ADC with integrated PGA, Easy Drive input current cancellation, and on-chip temperature sensor. It delivers 2 ppm INL, 600 nV RMS noise, and simultaneous 50/60 Hz rejection - enabling direct digitization of rail-to-rail, high-impedance sensor signals in industrial process monitoring systems.
For engineers reviewing the LTC2486CDE#TRPBF datasheet, LTC2486CDE#TRPBF pinout, LTC2486CDE#TRPBF application, or LTC2486CDE#TRPBF equivalent, key selection criteria include its zero-differential-input-current architecture, programmable gain (1–256), internal oscillator, GND-to-VCC common-mode input range, and 14-lead DFN package with exposed thermal pad.
Technical Context
The LTC2486CDE#TRPBF employs a 3rd-order delta-sigma modulator with decimating FIR filter and auto-calibration to achieve no-latency settling in a single conversion cycle - even after channel reconfiguration. Its Easy Drive technology actively cancels differential input current via patented sampling, eliminating buffer requirements and preserving DC accuracy across source impedances up to 100 kΩ.
It supports dual-speed operation (1×/2× output rate), programmable line-frequency rejection (50 Hz, 60 Hz, or both), and flexible interface modes: internal SCK (output) or external SCK (input). The integrated PTAT temperature sensor provides 0.5°C resolution and ±2°C absolute accuracy over 0°C to 70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full-scale fidelity for precision measurement. |
| INL | ±2 ppm of VREF - enables sub-μV-level linearity in 5V or 2.5V reference systems. |
| Offset Error | ±0.5 µV typical - eliminates need for system-level offset trimming in low-drift applications. |
| RMS Noise | 600 nV (1× speed), 850 nV (2× speed) - supports 19+ ENOB at 7.5 SPS with gain = 256. |
| Input Common-Mode Range | GND to VCC - allows direct interfacing with sensors operating at rail voltages without level-shifting. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with single Li-ion, 3.3 V, and 5 V industrial rails. |
| Power Consumption | 160 µA typical (conversion), 1 µA (sleep) - enables battery-powered remote sensing. |
Pinout & Package
Package: 14-lead (4 mm × 3 mm) plastic DFN with exposed thermal pad (Pin 15 = GND, must be soldered).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| fO (1) | Frequency control input | Selects internal oscillator (GND) or external clock (10–1000 kHz); determines data rate and filter null placement. |
| SDI (2) | Serial data input | Configures gain, rejection mode, speed, channel, and temperature measurement via SPI command. |
| SCK (3) | Bidirectional clock I/O | Output in internal SCK mode; input in external SCK mode - defines timing for 24-bit read/write cycles. |
| CS (4) | Active-low chip select | Wakes device from sleep; initiates data transfer; aborting CS↑ mid-cycle triggers new conversion. |
| SDO (5) | Three-state serial output | Outputs 24-bit result (MSB first); also serves as conversion status flag (HIGH = in progress). |
| GND (6) | Analog/digital ground | Common return for all analog and digital circuits; requires low-impedance PCB connection. |
| COM (7) | Common negative input | Shared IN− for single-ended channels; supports bipolar input range relative to selected CHx. |
| CH0–CH3 (8–11) | Programmable analog inputs | Support single-ended or differential pairs (e.g., CH0/CH1, CH2/CH3); tolerate −0.3 V to VCC + 0.3 V. |
| VCC (12) | Positive supply | Power source for analog/digital core; requires 10 µF + 0.1 µF local bypassing. |
| REF+ / REF− (13–14) | Differential reference inputs | Set full-scale range (±0.5·VREF/Gain); support 0.1 V to VCC common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive input current cancellation | Eliminates dynamic input current errors - enables direct connection to >100 kΩ source impedances without accuracy loss. |
| No-latency digital filter | Settles in one conversion cycle after channel or configuration change - no waiting for filter stabilization. |
| Integrated temperature sensor | Delivers calibrated on-chip die temperature with ±2°C absolute accuracy and 0.5°C resolution - usable for system compensation. |
| Simultaneous 50/60 Hz rejection | Single configuration rejects both line frequencies - critical for global industrial equipment deployed across AC grid standards. |
| Programmable gain (1–256) | Eight discrete steps allow optimal signal scaling for microvolt-level sensor outputs while maintaining full 16-bit resolution. |
Applications
| Industrial Process Transmitter | High-Impedance Sensor Interface |
|---|---|
Use Scenario: Digitizing 4–20 mA loop signals conditioned by precision voltage-to-current converters in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC with integrated PGA and line-rejection filtering - performs synchronized multi-channel acquisition with <1 µV offset drift. Use Value: Eliminates external instrumentation amplifiers and notch filters, reducing BOM count and layout area while meeting IEC 61000-4-7 harmonic immunity requirements. | Use Scenario: Direct digitization of thermocouple, RTD, or strain gauge bridges with series resistive elements exceeding 50 kΩ. IC Role / Device Role / Timing Role: Rail-to-rail delta-sigma ADC with zero-differential-input-current architecture - acquires stable readings without buffer-induced errors or CMRR degradation. Use Value: Achieves ±0.005% full-scale accuracy at 7.5 SPS without external op-amps, simplifying sensor front-end design and calibration. |
| Portable Environmental Monitor | Multi-Sensor Data Acquisition Node |
Use Scenario: Battery-powered air quality sensor node measuring CO₂, humidity, and ambient temperature using electrochemical and capacitive transducers. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with integrated temperature sensor and sleep mode - manages power budget while delivering calibrated environmental data. Use Value: Reduces active current to 160 µA and sleep current to 1 µA, extending coin-cell life beyond 2 years at 1 reading/minute. | Use Scenario: Modular test equipment capturing voltage, current, and temperature from multiple DUTs simultaneously in lab-grade bench instruments. IC Role / Device Role / Timing Role: 4-channel configurable ADC with channel-muxing and automatic gain selection - enables flexible front-end routing without FPGA logic. Use Value: Supports mixed single-ended/differential inputs and real-time gain switching - eliminates need for external multiplexers and programmable gain amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit resolution, 4kSPS max, integrated PGA and burnout current sources; no on-chip temperature sensor. | Higher resolution suited for weigh scales; lacks simultaneous 50/60 Hz rejection and Easy Drive architecture. | Choose for ultra-high-resolution weight measurement where line rejection is handled externally. |
| MAX11206ETK+ | 24-bit, 1kSPS, internal oscillator only, no programmable gain; ±2°C temp sensor accuracy same. | Lower power (120 µA) but fixed gain limits flexibility with varying sensor output ranges. | Prefer when gain is fixed and lowest possible quiescent current is critical in space-constrained designs. |
Compared with ADS124S08IPWR and MAX11206ETK+, the LTC2486CDE#TRPBF uniquely combines 16-bit precision, zero-input-current operation, programmable gain, and simultaneous line-frequency rejection - making it optimal for cost-sensitive, multi-sensor industrial nodes requiring robust AC immunity and minimal external components.
Availability
LTC2486CDE#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, and environmental monitoring applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2486CDE#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-performance delta-sigma ADCs, voltage references, and power management ICs.
The LTC2486CDE#TRPBF belongs to Linear's No Latency DS™ family - designed specifically for high-accuracy, low-power, multi-channel sensor digitization in space- and power-constrained industrial and portable systems.
FAQ
What is the operating temperature range for the LTC2486CDE#TRPBF?
The LTC2486CDE#TRPBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is confirmed by the "C" suffix in the part number and specified in the Absolute Maximum Ratings table. It is not qualified for extended industrial (–40°C to 85°C) or automotive temperature ranges - those require the LTC2486IDE#TRPBF variant.
Does the LTC2486CDE#TRPBF require external clocking to operate?
No, the LTC2486CDE#TRPBF includes an integrated oscillator and operates autonomously when fO is tied to GND. External clocking (10–1000 kHz) is optional and used only to adjust output data rate or shift digital filter rejection nulls - it is not required for basic functionality.
How does the Easy Drive technology in the LTC2486CDE#TRPBF improve measurement accuracy?
Easy Drive technology in the LTC2486CDE#TRPBF uses a patented sampling scheme to cancel differential input current dynamically. This eliminates errors caused by source impedance mismatch and removes the need for input buffers - allowing rail-to-rail, high-impedance sensors (e.g., pH electrodes, thermistors) to be digitized directly with full DC accuracy.
Can the LTC2486CDE#TRPBF measure temperature internally, and what is its accuracy?
Yes, the LTC2486CDE#TRPBF integrates a PTAT temperature sensor with 0.5°C resolution and ±2°C absolute accuracy over 0°C to 70°C. This is verified in the Electrical Characteristics table under "Absolute Temperature Error" and used for on-chip die temperature compensation or system-level thermal monitoring.
What is the function of the COM pin on the LTC2486CDE#TRPBF?
The COM pin on the LTC2486CDE#TRPBF serves as the common negative input (IN−) for all single-ended channel configurations. When used in single-ended mode, CH0–CH3 are referenced to COM, which may be set anywhere from GND – 0.3 V to VCC + 0.3 V - enabling true rail-to-rail common-mode operation without external level shifting.
LTC2486CDE#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:
- 16
- Sampling Rate (Per Second):
- 15
- Number of Inputs:
- 2, 4
- 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:
- Temperature Sensor
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 14-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2486CDE#TRPBF FAQ
1.How can I place an order for LTC2486CDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2486CDE#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 LTC2486CDE#TRPBF reliable?
The price and inventory of LTC2486CDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2486CDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2486CDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2486CDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2486CDE#TRPBF?
LTC2486CDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2486CDE#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 LTC2486CDE#TRPBF?
For technical support, including LTC2486CDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2486CDE#TRPBF requirements.
6.How does Aetrix verify that LTC2486CDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2486CDE#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 LTC2486CDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2486CDE#TRPBF?
All LTC2486CDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2486CDE#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 LTC2486CDE#TRPBF part is unused and in its original packaging.
Return procedure for LTC2486CDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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