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Analog Devices Inc. LTC2487IDE#TRPBF
- Part No.:
- LTC2487IDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC2487IDE#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,220
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Product details
Overview
LTC2487IDE#TRPBF from Analog Devices is a 16-bit, 4-channel (2 differential) delta-sigma ADC with integrated PGA, Easy Drive input current cancellation, I²C interface, and on-chip temperature sensor. It delivers 2 ppm INL, 600 nV RMS noise, and programmable gain (1–256) for high-accuracy sensor digitization in industrial process control systems.
For engineers reviewing the LTC2487IDE#TRPBF datasheet, LTC2487IDE#TRPBF pinout, LTC2487IDE#TRPBF application, or LTC2487IDE#TRPBF equivalent, key selection criteria include its rail-to-rail input capability with zero differential input current, simultaneous 50/60 Hz rejection, no-latency conversion, and operation from 2.7V to 5.5V single supply.
Technical Context
The LTC2487IDE#TRPBF employs a 3rd-order delta-sigma modulator with decimating FIR filter and auto-calibration per conversion cycle, eliminating offset and full-scale drift across temperature, supply, and channel switching. Its Easy Drive architecture uses passive sampling network to cancel differential input current without on-chip buffers.
It supports 9 selectable I²C addresses via CA0/CA1 pins and global address for synchronization, operates with internal 307.2 kHz oscillator or external clock (10–1000 kHz), and provides configurable 1× or 2× speed modes with distinct noise and power trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage over full input range. |
| INL | 2 ppm of VREF - enables ±0.0002% linearity error in precision measurement applications. |
| Output Noise | 600 nV RMS (1× mode) - supports sub-microvolt signal resolution with 256× gain. |
| Gain Range | Programmable 1 to 256 in 8 steps - allows flexible scaling for mV-level thermocouples or high-voltage industrial sensors. |
| Temp Sensor Accuracy | ±2°C absolute, 0.5°C resolution - enables direct on-board temperature compensation without external sensor. |
| Common Mode Range | GND to VCC independent of reference - permits rail-to-rail analog inputs even with low VREF (e.g., 0.1V). |
| Power Supply | 2.7V to 5.5V single supply - compatible with standard logic rails and battery-powered instrumentation. |
Pinout & Package
The LTC2487IDE#TRPBF is housed in a 14-lead (4 mm × 3 mm) plastic DFN package with exposed pad (Pin 15) tied to GND and required to be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| fO | Frequency control input | Selects internal oscillator (GND) or external clock (10–1000 kHz); determines output data rate and filter null placement. |
| CA0, CA1 | I²C address configuration | Three-state (LOW/HIGH/FLOAT) pins enabling 9 unique I²C addresses plus global sync address. |
| SCL, SDA | I²C serial interface | Standard 2-wire slave interface supporting up to 400 kHz clock; SDA is open-drain requiring pull-up. |
| GND, Exposed Pad | Ground reference | Primary ground return path; exposed pad must be soldered for thermal and electrical integrity. |
| COM | Common negative input | Shared IN– for all single-ended channels; supports bipolar input range relative to selected CHx. |
| CH0–CH3 | Analog multiplexer inputs | Configurable as 4 single-ended or 2 differential inputs; voltage range extends beyond rails (–0.3V to VCC+0.3V). |
| REF+, REF– | Differential reference inputs | Set full-scale range (±0.5·VREF/Gain); VREF = REF+ – REF– must be ≥0.1V and ≤VCC. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency conversion | Digital filter settles in one cycle after channel change - first result is fully accurate, eliminating dead time in multiplexed systems. |
| Easy Drive input current cancellation | Zero differential input current - enables direct connection of high-impedance sensors (e.g., RTDs, thermistors) without external buffers or RC compensation. |
| Simultaneous 50/60 Hz rejection | Hardware-based notch filtering at both line frequencies - eliminates need for software averaging or external notch filters in AC-coupled environments. |
| Auto-calibration per conversion | Continuous offset and full-scale correction - maintains 1 ppm offset drift and 15 ppm full-scale error over temperature and time without user intervention. |
| Integrated temperature sensor | On-die PTAT element with 93.5 µV/°C coefficient - provides real-time die temperature for system-level compensation with <2°C absolute error. |
Applications
| Industrial Process Monitoring | Multi-Sensor Data Acquisition |
|---|---|
Use Scenario: Continuous monitoring of pressure, flow, and level transmitters in PLC-controlled factory lines. IC Role / Device Role / Timing Role: Precision digitizer for 4–20 mA loop sensors and bridge-based transducers, providing calibrated 16-bit readings every 131–164 ms. Use Value: Eliminates external op-amps and anti-aliasing filters while maintaining 2 ppm INL and 600 nV noise floor across –40°C to +85°C operating range. | Use Scenario: Simultaneous acquisition of thermocouple, RTD, and strain gauge signals in portable test equipment. IC Role / Device Role / Timing Role: Single-chip 4-channel front-end with programmable gain and automatic channel sequencing via I²C register writes. Use Value: Reduces BOM count by integrating PGA, temperature sensor, and line-frequency rejection - cuts PCB area by >30% vs discrete solutions. |
| Temperature-Compensated Instrumentation | Low-Power Remote Sensing |
Use Scenario: High-accuracy digital multimeter with on-board cold-junction compensation and sensor linearization. IC Role / Device Role / Timing Role: Dual-role ADC: digitizes external thermocouple voltage while concurrently measuring die temperature for real-time offset correction. Use Value: Achieves <±0.5°C total system accuracy using internal 0.5°C-resolution sensor and 1 ppm offset stability - no calibration lookup tables required. | Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and gas concentration. IC Role / Device Role / Timing Role: Ultra-low-power ADC operating in 2× speed mode (7.5 Hz output) with 80 µA average current and sleep-mode current of 1 µA. Use Value: Enables >5-year battery life on CR2032 with 100% duty cycling - leverages sleep state power reduction of two orders of magnitude between conversions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS114S08BIPBSR | 24-bit resolution, SPI interface, no integrated temp sensor, higher power (350 µA) | Requires external temperature sensing and SPI host; better for ultra-high-resolution but less integrated systems | Choose when 24-bit resolution outweighs I²C simplicity and on-chip temperature sensing. |
| MAX11206ETN+ | 18-bit resolution, 2-wire I²C, no PGA, no temp sensor, lower noise (250 nV RMS) | Lacks programmable gain and temperature compensation; requires external signal conditioning | Prefer when fixed-gain, ultra-low-noise performance is critical and system already includes temperature management. |
Compared with ADS114S08BIPBSR and MAX11206ETN+, the LTC2487IDE#TRPBF offers unique integration of Easy Drive, simultaneous 50/60 Hz rejection, and on-die temperature sensor - reducing design complexity and component count in space-constrained industrial nodes.
Availability
LTC2487IDE#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, multi-sensor data acquisition, and temperature-compensated measurement systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2487IDE#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 (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2487IDE#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in harsh environments where rail-to-rail input, line-frequency rejection, and long-term stability are critical.
FAQ
What is the operating temperature range of the LTC2487IDE#TRPBF?
The LTC2487IDE#TRPBF is rated for –40°C to +85°C operation, matching the "I" grade specification. This extended range ensures reliable performance in industrial control cabinets, outdoor sensor enclosures, and factory automation equipment where ambient temperatures exceed commercial limits. The device maintains full 2 ppm INL and 600 nV RMS noise specifications across this entire range.
Does the LTC2487IDE#TRPBF require external components for basic operation?
The LTC2487IDE#TRPBF requires only a 10 µF tantalum capacitor and 0.1 µF ceramic capacitor on VCC, pull-up resistors on SDA/SCL, and proper grounding of the exposed pad. No external op-amps, anti-aliasing filters, or reference buffers are needed due to its Easy Drive architecture, rail-to-rail input capability, and integrated reference rejection - simplifying layout and reducing BOM cost.
How does the Easy Drive technology in the LTC2487IDE#TRPBF eliminate input current errors?
The LTC2487IDE#TRPBF uses a proprietary passive sampling network that automatically cancels differential input current during conversion. This eliminates dynamic errors caused by source impedance mismatch, allowing direct connection of high-impedance sensors (e.g., thermistors >100 kΩ) without external compensation networks - preserving DC accuracy and simplifying front-end design.
Can the LTC2487IDE#TRPBF perform simultaneous 50 Hz and 60 Hz rejection?
Yes, the LTC2487IDE#TRPBF supports a dedicated simultaneous 50/60 Hz rejection mode enabled via configuration register. In this mode, its digital filter places nulls at both frequencies, rejecting common-mode interference from dual-standard AC mains environments - such as export-grade industrial equipment deployed globally - without requiring external notch filters or software post-processing.
What is the function of the fO pin on the LTC2487IDE#TRPBF?
The fO pin on the LTC2487IDE#TRPBF controls the conversion clock source: tying it to GND selects the internal 307.2 kHz oscillator for standard operation, while driving it with an external clock (10–1000 kHz) allows precise adjustment of output data rate and repositioning of the digital filter's rejection null - essential for custom line-frequency rejection or synchronized multi-device sampling.
LTC2487IDE#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:
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2487IDE#TRPBF FAQ
1.How can I place an order for LTC2487IDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2487IDE#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 LTC2487IDE#TRPBF reliable?
The price and inventory of LTC2487IDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2487IDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2487IDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2487IDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2487IDE#TRPBF?
LTC2487IDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2487IDE#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 LTC2487IDE#TRPBF?
For technical support, including LTC2487IDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2487IDE#TRPBF requirements.
6.How does Aetrix verify that LTC2487IDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2487IDE#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 LTC2487IDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2487IDE#TRPBF?
All LTC2487IDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2487IDE#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 LTC2487IDE#TRPBF part is unused and in its original packaging.
Return procedure for LTC2487IDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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