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Analog Devices Inc. LTC2415-1CGN#TRPBF
- Part No.:
- LTC2415-1CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2415-1CGN#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
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Product details
Overview
LTC2415-1CGN#TRPBF from Analog Devices (formerly Linear Technology) is a micropower 24-bit delta-sigma analog-to-digital converter with differential input and reference, single-cycle settling time, 87dB simultaneous 50Hz/60Hz normal-mode rejection, 0.23ppm RMS noise, and 2ppm INL. It operates from 2.7V to 5.5V and targets high-precision sensor digitization in industrial instrumentation and weigh scales.
For engineers reviewing the LTC2415-1CGN#TRPBF datasheet, LTC2415-1CGN#TRPBF pinout, LTC2415-1CGN#TRPBF application, or LTC2415-1CGN#TRPBF equivalent, key selection considerations include its simultaneous 49Hz–61.2Hz line-frequency rejection, GND-to-VCC common-mode input/reference flexibility, internal oscillator (no external components), and 13.75Hz output rate in default configuration.
Technical Context
The LTC2415-1CGN#TRPBF implements a decimating FIR filter synchronized to an internal oscillator or external clock, enabling deterministic notch placement at 50Hz and 60Hz ±2% simultaneously-unlike the LTC2415 which supports only one frequency at a time. Its autocalibration architecture continuously corrects offset and gain errors without user intervention.
It uses a 3-wire SPI-compatible interface where SCK operates bidirectionally: as output during internal-clock mode (17.5kHz typical) or input during external-clock mode (up to 2MHz). The FO pin selects between internal 50/60Hz rejection (FO = GND) or external clock synchronization (fEOSC/2560).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full-scale fidelity for precision measurement systems. |
| INL | 2ppm of VREF-enables ≤0.00005% full-scale error in ratiometric bridge or thermocouple applications. |
| RMS Noise | 0.23ppm (1.1µVRMS at 5V ref)-supports 21.5 effective bits at 15Hz output rate with low-noise front-end design. |
| Normal-Mode Rejection | 87dB over 49Hz–61.2Hz-rejects both 50Hz and 60Hz interference without manual frequency switching. |
| Supply Current | 200µA in conversion mode, 20µA in sleep-enables battery-powered portable DVMs and field instruments. |
| Output Rate | 13.75Hz (internal oscillator, FO = GND)-provides stable, jitter-free sampling for slow-varying sensor outputs. |
| Common-Mode Rejection | 140dB DC-allows independent setting of VINCM and VREFCM across full GND-to-VCC range for remote sensing. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0°C to 70°C operating temperature, SO-8 footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,7,8,9,10,15,16) | Ground reference | Seven dedicated ground pins internally bonded for low-impedance return paths and optimal VCC decoupling-requires connection to ground plane on all pins. |
| VCC (Pin 2) | Positive supply | 2.7V–5.5V single supply; requires 10µF tantalum + 0.1µF ceramic bypass close to pin for noise immunity. |
| REF+ / REF– (Pins 3,4) | Differential reference inputs | Accept 0.1V–VCC differential voltage; enable flexible ratiometric measurements with independent common-mode biasing. |
| IN+ / IN– (Pins 5,6) | Differential analog inputs | Support –0.5VREF to +0.5VREF differential range; tolerate GND–0.3V to VCC+0.3V absolute voltage per pin. |
| CS (Pin 11) | Chip select | Active-low control: initiates data output when pulled low; automatically enters sleep mode when high to reduce current to 20µA. |
| SDO (Pin 12) | Serial data output | Three-state output; holds conversion result during sleep; shifts out 32-bit data on falling SCK edge. |
| SCK (Pin 13) | Serial clock | Bidirectional: output in internal-clock mode (17.5kHz), input in external-clock mode (≤2MHz); auto-configured at power-up. |
| FO (Pin 14) | Frequency control | Selects rejection profile: GND enables simultaneous 50/60Hz notch; external clock enables programmable fEOSC/2560 rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50Hz/60Hz rejection | 87dB minimum over 49Hz–61.2Hz-eliminates need for region-specific hardware or firmware reconfiguration in global instrumentation. |
| No-latency ∆Σ architecture | Single-cycle settling-enables true multiplexed operation without inter-channel crosstalk or filter delay compensation. |
| Internal oscillator | No external crystal or timing components required-reduces BOM count and layout area while ensuring consistent 13.75Hz output rate. |
| GND-to-VCC common-mode range | Independent VINCM and VREFCM settings across full supply rail-supports direct connection to unbuffered bridge sensors or thermocouples. |
| Auto shutdown | 20µA sleep current with CS = HIGH-extends battery life in portable DVMs and handheld test equipment. |
| 3-wire SPI/MICROWIRE interface | No configuration registers or initialization sequence-simplifies firmware integration and reduces startup latency. |
Applications
| Direct Sensor Digitizer | Weight Scales |
|---|---|
|
Use Scenario: Direct digitization of millivolt-level outputs from load cells, RTDs, or thermocouples without signal conditioning. IC Role / Device Role / Timing Role: High-resolution ADC with integrated reference and auto-calibration-acts as primary data acquisition engine. Use Value: Eliminates external op-amps and reference ICs; achieves ≤0.001% linearity error over temperature with 2ppm INL and 140dB CMR. |
Use Scenario: Precision weighing in commercial and industrial scales requiring 6-digit resolution and NTEP/EC type approval. IC Role / Device Role / Timing Role: Primary A/D converter in scale controller-handles bridge excitation feedback and digital filtering. Use Value: 87dB simultaneous 50/60Hz rejection ensures stable readings in electrically noisy factory environments without shielding or software averaging. |
| Gas Analyzers | Strain Gage Transducers |
|
Use Scenario: Low-drift conversion of electrochemical sensor outputs in portable gas detection units. IC Role / Device Role / Timing Role: Low-power ADC with 200µA active current-enables >100-hour battery life in handheld analyzers. Use Value: 0.23ppm RMS noise and 2ppm INL support sub-ppm gas concentration resolution with minimal post-processing. |
Use Scenario: High-accuracy strain measurement in structural health monitoring and materials testing systems. IC Role / Device Role / Timing Role: Differential ADC with GND-to-VCC common-mode range-interfaces directly to Wheatstone bridges with wide excitation voltage tolerance. Use Value: Independent VINCM/VREFCM biasing allows use of 2.5V or 5V bridge excitation while maintaining full 24-bit dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2415CGN#TRPBF | 15Hz output rate; 110dB rejection at either 50Hz or 60Hz (not both); FO pin selects single-frequency mode. | Preferred for fixed-region deployments (e.g., EU-only or NA-only products) where higher notch depth is prioritized over dual-frequency support. | Select when 50Hz-only or 60Hz-only line rejection suffices and maximum 110dB attenuation is required. |
| ADS124S08IPW | 24-bit, 4kSPS max, integrated PGA and burn-out current sources; requires external reference; SPI interface. | Targets multi-channel sensor arrays with programmable gain; lacks simultaneous 50/60Hz rejection and internal oscillator. | Choose when channel count, on-chip PGA, or sensor diagnostics (e.g., open-wire detection) outweigh the need for ultra-low-noise, self-contained line rejection. |
Compared with LTC2415CGN#TRPBF, the LTC2415-1CGN#TRPBF trades 23dB notch depth for universal 50/60Hz operation-critical for export-grade instrumentation-while ADS124S08IPW adds system-level features at the cost of higher power and external component dependencies.
Availability
LTC2415-1CGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, precision weigh scales, and portable gas analyzers requiring stable component supply and long-term lifecycle support.
Supply support for LTC2415-1CGN#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 technologies.
The LTC2415/LTC2415-1 product line was designed for ultra-precision, low-power sensor digitization in instrumentation, industrial automation, and portable test equipment-emphasizing ease of use, self-calibration, and robust line-frequency rejection.
FAQ
What is the primary functional distinction between LTC2415-1CGN#TRPBF and LTC2415CGN#TRPBF?
The LTC2415-1CGN#TRPBF provides simultaneous 50Hz and 60Hz line-frequency rejection (87dB minimum over 49Hz–61.2Hz), whereas the LTC2415CGN#TRPBF offers higher 110dB rejection but only at one frequency (50Hz or 60Hz) selected via the FO pin. This makes the LTC2415-1CGN#TRPBF ideal for globally deployed instrumentation that must operate reliably in both 50Hz and 60Hz grid environments without hardware or firmware changes.
Does LTC2415-1CGN#TRPBF require external passive components for oscillator operation?
No. The LTC2415-1CGN#TRPBF integrates a precision internal oscillator and requires no external crystals, capacitors, or resistors to achieve its specified 13.75Hz output rate and 87dB simultaneous 50/60Hz rejection. This simplifies PCB layout, reduces BOM cost, and improves long-term timing stability compared to externally clocked alternatives.
How does the LTC2415-1CGN#TRPBF handle common-mode voltage mismatches between input and reference?
The LTC2415-1CGN#TRPBF allows independent setting of input common-mode voltage (VINCM) and reference common-mode voltage (VREFCM) anywhere within the GND-to-VCC range-each with >140dB DC rejection. This enables direct interfacing to unbuffered bridge sensors where excitation voltage differs from ADC supply, eliminating level-shifting circuitry and associated errors.
What is the guaranteed data integrity guarantee for LTC2415-1CGN#TRPBF over temperature?
The LTC2415-1CGN#TRPBF guarantees 24-bit resolution with no missing codes across its full 0°C to 70°C operating range. Integral nonlinearity remains ≤2ppm of VREF, offset error drift is ≤20nV/°C, and gain error drift is ≤0.03ppm of VREF/°C-ensuring metrology-grade accuracy without periodic recalibration in stable thermal environments.
Can LTC2415-1CGN#TRPBF be used with external clock sources, and what is the supported frequency range?
Yes. When the FO pin is driven by an external clock, the LTC2415-1CGN#TRPBF accepts frequencies from 2.56kHz to 500kHz. The first digital filter notch is placed at fEOSC/2560, allowing programmable rejection tuning-for example, a 460.8kHz clock yields a 180Hz notch. This extends utility beyond line-frequency rejection into custom anti-aliasing or harmonic suppression applications.
LTC2415-1CGN#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):
- 13.75
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2415-1CGN#TRPBF FAQ
1.How can I place an order for LTC2415-1CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2415-1CGN#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 LTC2415-1CGN#TRPBF reliable?
The price and inventory of LTC2415-1CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2415-1CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2415-1CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2415-1CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2415-1CGN#TRPBF?
LTC2415-1CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2415-1CGN#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 LTC2415-1CGN#TRPBF?
For technical support, including LTC2415-1CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2415-1CGN#TRPBF requirements.
6.How does Aetrix verify that LTC2415-1CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2415-1CGN#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 LTC2415-1CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2415-1CGN#TRPBF?
All LTC2415-1CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2415-1CGN#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 LTC2415-1CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2415-1CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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