My Inquiry
My Account
Analog Devices Inc. LTC2487IDE#PBF
- Part No.:
- LTC2487IDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC2487IDE#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:688
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2487IDE#PBF 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 and instrumentation systems.
For engineers reviewing the LTC2487IDE#PBF datasheet, LTC2487IDE#PBF pinout, LTC2487IDE#PBF application, or LTC2487IDE#PBF equivalent, key selection criteria include its rail-to-rail input capability with zero differential input current, simultaneous 50/60 Hz rejection, no-latency output, and –40°C to +85°C operating range.
Technical Context
The LTC2487IDE#PBF employs a 3rd-order delta-sigma modulator with decimating FIR filter and auto-calibration that runs every conversion cycle-ensuring stable offset (<1 µV), full-scale error (<15 ppm), and linearity (2 ppm INL) across temperature and supply voltage. Its Easy Drive architecture eliminates dynamic differential input current via passive sampling network cancellation.
It supports both internal oscillator (307.2 kHz) and external clock (10–1000 kHz) for configurable output data rates (7.5–15 sps in normal mode; 15–30 sps in 2× speed mode), with programmable 50 Hz, 60 Hz, or simultaneous 50/60 Hz rejection-all while maintaining GND-to-VCC common-mode input range independent of reference voltage.
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 error in 5 V reference systems (±10 µV max deviation). |
| Output Noise | 600 nV RMS (normal mode)-supports 19.5 ENOB at 7.5 sps for ultra-low-noise DC sensing. |
| Offset Error | 0.5 µV typical (–40°C to +85°C)-minimizes calibration burden in temperature-compensated systems. |
| Common-Mode Rejection | 140 dB DC & 50/60 Hz-rejects ground bounce and power-line interference without external filtering. |
| Supply Range | 2.7 V to 5.5 V-operates from single Li-ion or 3.3 V/5 V rails with 160 µA conversion current. |
| Temperature Sensor | ±2°C absolute accuracy, 0.5°C resolution-enables on-chip thermal monitoring without external components. |
Pinout & Package
14-lead (4 mm × 3 mm) plastic DFN package with exposed pad (Pin 15 = GND). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| fO (Pin 1) | Frequency control input | Selects internal oscillator (GND) or external clock source; determines output data rate and filter null placement. |
| CA0, CA1 (Pins 2, 3) | I²C address configuration | Three-state inputs (LOW/HIGH/FLOAT) set one of nine device addresses plus global sync address. |
| SCL (Pin 4) | I²C serial clock input | Slave-only interface; defines timing for SDA read/write-supports up to 400 kHz standard-mode I²C. |
| SDA (Pin 5) | I²C bidirectional data line | Open-drain output with high-impedance input; transmits 24-bit result (16-bit + sign) on falling SCL edge. |
| GND (Pin 6) | Analog/digital ground reference | Low-impedance return path for all analog and digital currents; must connect to system ground plane. |
| COM (Pin 7) | Common negative input | Shared IN– for all single-ended channels; supports rail-to-rail input signals (GND – 0.3 V to VCC + 0.3 V). |
| CH0–CH3 (Pins 8–11) | Configurable analog inputs | Programmable as single-ended (vs. COM) or differential pairs (e.g., CH0/CH1); support high-impedance sensors directly. |
| VCC (Pin 12) | Positive supply | 2.7 V–5.5 V operation; requires local 10 µF tantalum + 0.1 µF ceramic bypass for low-noise performance. |
| REF+, REF– (Pins 13, 14) | Differential reference inputs | Set full-scale range (±0.5·VREF/Gain); VREF = REF+ – REF– must be ≥0.1 V and ≤VCC. |
| Exposed Pad (Pin 15) | Thermal & electrical ground | Must be soldered to PCB ground plane for thermal dissipation (θJA = 37°C/W) and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma conversion | Digital filter settles in one cycle-even after channel change-enabling deterministic real-time multiplexing. |
| Easy Drive input current cancellation | Eliminates differential input current errors, allowing direct connection of high-Z sensors (e.g., RTDs, thermocouples) without buffer amplifiers. |
| Integrated temperature sensor | On-die PTAT sensor with ±2°C absolute accuracy enables self-thermal compensation and system health monitoring. |
| Programmable 50/60 Hz rejection | Configurable notch filtering for AC line interference-supports single, dual, or simultaneous rejection modes without external components. |
| Auto-calibration per conversion | Continuous offset and full-scale correction removes drift from temperature, supply, and channel switching-no user intervention required. |
Applications
| Industrial Process Monitoring | High-Precision Sensor Interface |
|---|---|
|
Use Scenario: Continuous monitoring of pressure, flow, and level transducers in chemical plants with 4–20 mA loop integration. IC Role / Device Role / Timing Role: Direct digitizer for ratiometric bridge sensors and millivolt-level outputs; provides synchronized 50/60 Hz rejection for noisy plant-floor environments. Use Value: Eliminates external instrumentation amplifiers and line-frequency filters-reducing BOM count and layout area while maintaining ±0.005% measurement accuracy. |
Use Scenario: Digitizing outputs from load cells, strain gauges, and thermistors in portable test equipment. IC Role / Device Role / Timing Role: Low-power, high-resolution ADC with integrated PGA and temperature sensor for on-the-fly gain/offset compensation. Use Value: Enables 16-bit resolution at 7.5 sps with only 160 µA supply current-extending battery life in handheld calibrators and field meters. |
| Temperature-Compensated Instrumentation | Multi-Channel Data Acquisition |
|
Use Scenario: Precision digital multimeters and benchtop analyzers requiring on-chip thermal drift correction. IC Role / Device Role / Timing Role: Simultaneous acquisition of sensor voltage and die temperature; used to correct gain/offset coefficients in firmware. Use Value: Achieves <1 ppm/°C full-scale drift stability by correlating real-time temperature readings with ADC transfer function parameters. |
Use Scenario: Modular DAQ modules for PLCs and SCADA systems with mixed single-ended and differential inputs. IC Role / Device Role / Timing Role: 4-channel multiplexer with automatic channel sequencing and no-latency output-supports deterministic scan intervals. Use Value: Guarantees first-conversion validity after channel select, enabling jitter-free 100 ms cycle times across all four inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 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 standalone measurements | Choose when >16-bit resolution is mandatory and I²C is not required. |
| MAX11206ETL+ | 20-bit resolution, I²C interface, no PGA, no temp sensor, lower noise (250 nV RMS) | Lacks programmable gain and on-chip thermal monitoring-requires external signal conditioning | Prefer for low-noise, fixed-gain applications where temperature compensation is handled externally. |
Compared with ADS124S08IPW and MAX11206ETL+, the LTC2487IDE#PBF uniquely combines I²C simplicity, integrated temperature sensing, Easy Drive input cancellation, and guaranteed first-conversion validity-making it optimal for compact, self-compensating multi-sensor nodes.
Availability
LTC2487IDE#PBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, temperature-compensated sensor modules, and multi-channel data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2487IDE#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 (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#PBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in space- and cost-constrained embedded systems.
FAQ
What is the operating temperature range of the LTC2487IDE#PBF?
The LTC2487IDE#PBF is rated for –40°C to +85°C operation, matching the "I" grade specification. This extended range ensures reliable performance in industrial environments, outdoor instrumentation, and automotive under-hood applications where ambient temperatures exceed commercial-grade limits.
Does the LTC2487IDE#PBF require external amplification for high-impedance sensors?
No-the LTC2487IDE#PBF incorporates Easy Drive technology that cancels differential input current, enabling direct connection of high-impedance sources like RTDs, thermocouples, and piezoresistive sensors without external op-amps or buffers while preserving DC accuracy.
How does the LTC2487IDE#PBF achieve simultaneous 50 Hz and 60 Hz rejection?
The LTC2487IDE#PBF uses a digitally reconfigurable FIR filter synchronized to an internal or external oscillator. In simultaneous mode, its filter nulls are placed at both 50 Hz and 60 Hz using a 280 kHz external clock (or internal equivalent), rejecting line noise regardless of regional AC frequency.
What is the purpose of the fO pin on the LTC2487IDE#PBF?
The fO pin selects the conversion clock source: tied to GND for the internal 307.2 kHz oscillator (default), or driven externally (10–1000 kHz) to adjust output data rate and shift digital filter rejection nulls-enabling custom line-frequency rejection or higher throughput.
Can the LTC2487IDE#PBF measure its own die temperature?
Yes-the LTC2487IDE#PBF integrates a calibrated PTAT temperature sensor with ±2°C absolute accuracy and 0.5°C resolution. It can be selected as an input channel via I²C command, providing real-time thermal data for system-level compensation or health monitoring.
LTC2487IDE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC2487IDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2487IDE#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 LTC2487IDE#PBF reliable?
The price and inventory of LTC2487IDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2487IDE#PBF is usually 5 days.
3.What payment methods are accepted for LTC2487IDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2487IDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2487IDE#PBF?
LTC2487IDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2487IDE#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 LTC2487IDE#PBF?
For technical support, including LTC2487IDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2487IDE#PBF requirements.
6.How does Aetrix verify that LTC2487IDE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2487IDE#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 LTC2487IDE#PBF meets industry standards.
7.What is the process for return or replacement of LTC2487IDE#PBF?
All LTC2487IDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2487IDE#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 LTC2487IDE#PBF part is unused and in its original packaging.
Return procedure for LTC2487IDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2487IDE#PBF 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…
