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Analog Devices Inc. LTC2415IGN#TRPBF
- Part No.:
- LTC2415IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2415IGN#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,964
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Product details
Overview
LTC2415IGN#TRPBF from Analog Devices (formerly Linear Technology) is a micropower 24-bit delta-sigma analog-to-digital converter with differential input and differential reference, 2ppm INL, 0.23ppm RMS noise, and single-cycle settling time. It operates from 2.7V to 5.5V and delivers 15Hz output rate with >110dB 50/60Hz notch rejection-ideal for precision bridge sensor digitization in industrial weighing systems.
For engineers reviewing the LTC2415IGN#TRPBF datasheet, LTC2415IGN#TRPBF pinout, LTC2415IGN#TRPBF application, or LTC2415IGN#TRPBF equivalent, key selection considerations include its internal oscillator eliminating external timing components, GND-to-VCC common-mode input/reference flexibility, 200µA supply current in conversion mode, and SSOP-16 package compatibility with SO-8 footprints.
Technical Context
The LTC2415IGN#TRPBF implements a decimating FIR-based delta-sigma modulator with auto-calibration, enabling true no-latency conversion where each output corresponds directly to one analog sample-critical for multiplexed sensor arrays. Its digital filter is clocked by an integrated oscillator, yielding fixed 50Hz or 60Hz rejection depending on FO pin state.
It supports both internal SCK (SCK as output) and external SCK (SCK as input) modes via power-up detection, and uses a 3-wire SPI/MICROWIRE-compatible interface. The FO pin selects between 50Hz rejection (FO = VCC), 60Hz rejection (FO = GND), or user-defined notch frequency (FO = external clock at fEOSC/2560).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity across full scale for metrology-grade measurements. |
| INL | 2 ppm of VREF-enables ±0.0002% linearity error in 6½-digit DVM or strain-gage applications. |
| RMS Noise | 0.23 ppm of VREF-translates to ~1.1 µVRMS at 5V reference, supporting sub-microvolt signal resolution. |
| Supply Current | 200 µA in conversion mode, 20 µA in sleep-allows battery-powered operation for >1 year in low-duty-cycle sensor nodes. |
| Common-Mode Rejection | 140 dB DC-rejects shared-mode interference from noisy industrial grounds without external instrumentation amps. |
| Output Rate | 15 Hz with internal oscillator-optimized for stable, low-drift readings in weight scales and temperature sensors. |
| Reference Range | 0.1 V to VCC differential-supports ratiometric sensing with any bridge excitation voltage from 100 mV to 5.5 V. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 5.0 mm × 6.2 mm, 0.635 mm pitch, SO-8 footprint compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 7, 8, 9, 10, 15, 16) | Ground reference | Seven internally connected ground pins minimize ground bounce and improve PSRR; all must be tied to low-impedance ground plane. |
| VCC (Pin 2) | Positive supply | 2.7 V to 5.5 V operation; requires local 10 µF tantalum + 0.1 µF ceramic bypassing for stable conversion performance. |
| REF+ / REF– (Pins 3, 4) | Differential reference inputs | Accept 0.1 V to VCC differential range; common-mode voltage independently set from GND to VCC-enables remote sensing topologies. |
| IN+ / IN– (Pins 5, 6) | Differential analog inputs | Support –0.5×VREF to +0.5×VREF differential input range; common-mode voltage independently adjustable from GND–0.3 V to VCC+0.3 V. |
| CS (Pin 11) | Chip select | Active-low control: initiates data output when pulled low; device auto-enters sleep mode when high-key for power cycling. |
| SDO (Pin 12) | Serial data output | Three-state output; holds conversion result during sleep; outputs 32-bit data stream synchronized to SCK edges. |
| SCK (Pin 13) | Serial clock | Bidirectional: output in internal-clock mode (driven by ADC), input in external-clock mode-mode auto-detected at power-up. |
| FO (Pin 14) | Frequency control | Selects notch behavior: FO = VCC → 50 Hz rejection; FO = GND → 60 Hz rejection; FO = external clock → fEOSC/2560 notch. |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit no-latency ΔΣ architecture | Single-cycle settling eliminates filter delay-enables real-time multiplexed sampling of multiple sensors without data alignment overhead. |
| Integrated oscillator | Removes need for external crystal, capacitor, or clock generator-reduces BOM count and PCB area in space-constrained designs. |
| Differential input & reference with independent common-mode ranges | Allows direct connection to unbuffered Wheatstone bridges while rejecting common-mode noise up to 140 dB DC. |
| 15 Hz output rate with >110 dB 50/60 Hz rejection | Meets IEC 61000-4-8 immunity requirements for industrial environments without external notch filters or software compensation. |
| 200 µA conversion current, 20 µA sleep current | Enables multi-year battery life in portable instrumentation when paired with microcontroller-driven CS gating. |
| SSOP-16 package with SO-8 footprint | Provides 24-bit performance in legacy SO-8 layout-compatible form factor-simplifies upgrade paths from 16-bit ADCs. |
Applications
| Weight Scales | Strain Gage Transducers |
|---|---|
|
Use Scenario: High-precision load cell readout in platform scales and hopper weighers under AC mains noise. IC Role / Device Role / Timing Role: Direct digitizer of mV-level bridge outputs with built-in 50/60 Hz line rejection and ratiometric reference tracking. Use Value: Eliminates external instrumentation amplifier and analog notch filter stages-reducing component count by ≥4 and system drift by 3×. |
Use Scenario: Static and dynamic strain measurement in structural health monitoring systems with long cable runs. IC Role / Device Role / Timing Role: Differential ADC with GND-to-VCC input common-mode range, enabling remote sensing without level-shifting circuitry. Use Value: Supports 4-wire Kelvin sensing directly-improving accuracy by removing lead resistance errors up to 10 Ω. |
| Direct Temperature Measurement | 6-Digit DVMs |
|
Use Scenario: Precision RTD or thermistor readout in environmental chambers with ±0.01°C stability requirements. IC Role / Device Role / Timing Role: Low-noise 24-bit converter with 0.23 ppm RMS noise and 2 ppm INL-delivering <100 nV effective resolution. Use Value: Achieves 0.001°C resolution with PT100 sensors using only 2.5 V reference-no oversampling or averaging required. |
Use Scenario: Benchtop digital voltmeter requiring 6½-digit accuracy and metrology-grade linearity. IC Role / Device Role / Timing Role: Primary ADC core with auto-calibration, 2ppm INL, and 140 dB CMRR-meeting ANSI C12.20 Class 0.1 accuracy. Use Value: Enables traceable calibration against standard references without factory trimming-reducing test time by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit, 4 kSPS, integrated PGA and burn-out current sources; requires external reference; 32-pin TQFP. | Better suited for multi-channel sensor arrays with programmable gain; less optimal for ultra-low-power single-sensor nodes. | Choose ADS124S08IPW when PGA flexibility and channel count outweigh power and board space constraints. |
| MAX11206ETL+ | 24-bit, 10 SPS, 1.8 V to 3.6 V supply, integrated oscillator, but only 105 dB 50/60 Hz rejection and 4 ppm INL. | Lower performance ceiling limits use in Class 0.1 metering or lab-grade DVMs; better fit for cost-sensitive portable instruments. | Choose MAX11206ETL+ when operating below 3.6 V and 105 dB rejection suffices-reducing supply complexity. |
Compared with ADS124S08IPW and MAX11206ETL+, the LTC2415IGN#TRPBF delivers superior 110+ dB line rejection and 2 ppm INL in a compact SSOP-16 package at 200 µA-making it optimal for mains-immune, single-channel, battery-aware precision measurement.
Availability
LTC2415IGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and battery-powered sensor nodes requiring stable component supply over extended production lifecycles.
Supply support for LTC2415IGN#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2415IGN#TRPBF belongs to Linear's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy direct sensor digitization in harsh electromagnetic environments.
FAQ
What is the operating temperature range for the LTC2415IGN#TRPBF?
The LTC2415IGN#TRPBF is rated for –40°C to +85°C ambient operation (industrial grade). This is confirmed by the "I" suffix in the part number and the Electrical Characteristics table specifying parameters over the full temperature range with the "l" symbol. All key specs-including INL, noise, and rejection-apply across this range.
Does the LTC2415IGN#TRPBF require external passive components for oscillator operation?
No-the LTC2415IGN#TRPBF integrates a precision internal oscillator and requires zero external timing components. When FO is tied to VCC or GND, the device automatically uses this oscillator to achieve 50 Hz or 60 Hz notch rejection. Only when using an external clock on FO is an external source needed.
Can the LTC2415IGN#TRPBF accept a 100 mV reference voltage?
Yes-the LTC2415IGN#TRPBF supports differential reference voltages from 0.1 V to VCC. A 100 mV reference is explicitly permitted per the Absolute Maximum Ratings and Electrical Characteristics tables, enabling high-resolution measurement of low-output sensors like micro-strain bridges.
How does the LTC2415IGN#TRPBF handle common-mode voltage on the analog inputs?
The LTC2415IGN#TRPBF allows independent setting of input common-mode voltage (VINCM) anywhere from GND – 0.3 V to VCC + 0.3 V-fully decoupled from the reference common-mode voltage. This enables direct interfacing with floating or biased sensor outputs without level-shifting circuitry.
What is the function of the seven GND pins on the LTC2415IGN#TRPBF?
All seven GND pins (1, 7, 8, 9, 10, 15, 16) are internally bonded together and must be connected to a low-impedance ground plane. This multi-pin configuration minimizes ground path inductance, improves PSRR above 100 kHz, and ensures stable reference and analog performance under dynamic load conditions.
LTC2415IGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 15
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- 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:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2415IGN#TRPBF FAQ
1.How can I place an order for LTC2415IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2415IGN#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 LTC2415IGN#TRPBF reliable?
The price and inventory of LTC2415IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2415IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2415IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2415IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2415IGN#TRPBF?
LTC2415IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2415IGN#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 LTC2415IGN#TRPBF?
For technical support, including LTC2415IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2415IGN#TRPBF requirements.
6.How does Aetrix verify that LTC2415IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2415IGN#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 LTC2415IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2415IGN#TRPBF?
All LTC2415IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2415IGN#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 LTC2415IGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2415IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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