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Analog Devices Inc. LTC2415CGN#PBF
- Part No.:
- LTC2415CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2415CGN#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:325
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Product details
Overview
LTC2415CGN#PBF from Analog Devices (formerly Linear Technology) is a micropower 24-bit delta-sigma analog-to-digital converter with differential input and reference, 2 ppm INL, 0.23 ppm RMS noise, and single-cycle settling time. It operates from 2.7V to 5.5V, supports 50Hz/60Hz notch rejection via FO pin configuration, and targets precision sensor digitization in industrial instrumentation and weight scales.
For engineers reviewing the LTC2415CGN#PBF datasheet, LTC2415CGN#PBF pinout, LTC2415CGN#PBF application, or LTC2415CGN#PBF equivalent, key selection considerations include its 15Hz output rate, internal oscillator eliminating external timing components, GND-to-VCC common-mode input/reference range, and 110dB 50/60Hz normal-mode rejection at FO = VCC or GND.
Technical Context
The LTC2415CGN#PBF implements a decimating FIR filter with auto-calibration architecture, enabling true no-latency ∆Σ conversion where each output corresponds directly to one completed conversion-critical for multiplexed sensor arrays. Its digital filter nulls are fixed at 50Hz (FO = VCC) or 60Hz (FO = GND), with no programmable register interface required.
It uses an integrated oscillator (no external crystal) and supports both internal SCK output mode (SCK as clock source) and external SCK input mode (SCK as clock sink), with timing governed by fEOSC/2560 for notch frequency placement. Reference and input common-mode voltages are independently configurable across the full GND-to-VCC range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full-scale linearity for high-precision measurement systems. |
| INL | 2 ppm of VREF-enables sub-1ppm system-level accuracy when paired with stable reference and low-drift front-end. |
| RMS Noise | 0.23 ppm of VREF (1.1 µVRMS at 5V ref)-supports 6½-digit DVM-grade resolution without external averaging. |
| Output Rate | 15 Hz-optimized for low-frequency industrial sensors (strain gages, RTDs, load cells) with inherent thermal stability. |
| Supply Current | 200 µA in conversion mode, 20 µA in sleep-enables battery-powered portable instrumentation with multi-year life. |
| Common-Mode Rejection | 140 dB DC-rejects ground loop errors and supply coupling in remote-sensing configurations with floating bridges. |
| Normal-Mode Rejection | 110 dB at 50Hz or 60Hz ±2%-eliminates mains interference without external notch filters or synchronous sampling. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0°C to 70°C operating temperature, SO-8 footprint compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 7–10, 15, 16) | Ground reference | Seven dedicated ground pins internally tied-must all be connected to low-impedance ground plane to maintain 140 dB CMR and minimize PSRR degradation. |
| VCC (Pin 2) | Positive supply | 2.7V–5.5V operation; requires 10µF tantalum + 0.1µF ceramic bypass close to pin for stable 200µA dynamic current delivery. |
| REF+ / REF– (Pins 3, 4) | Differential reference inputs | Accept 0.1V–VCC differential range; common-mode voltage independently set from GND to VCC-enables ratiometric bridge sensing with remote excitation. |
| IN+ / IN– (Pins 5, 6) | Differential analog inputs | Support –0.5VREF to +0.5VREF differential range; input common-mode from GND–0.3V to VCC+0.3V-accommodates wide-range transducer outputs. |
| CS (Pin 11) | Chip select | Active-low enable: LOW wakes ADC and enables SDO; HIGH forces sleep mode (20 µA) and tri-states SDO-key for power-gated sensor polling. |
| SDO (Pin 12) | Serial data output | 3-state output; delivers 32-bit conversion result MSB-first on falling SCK edge-compatible with SPI/MICROWIRE controllers without level-shifting. |
| SCK (Pin 13) | Serial clock | Bidirectional: output in internal-clock mode (19.2 kHz), input in external-clock mode (≤2 MHz)-auto-detected at CS fall edge. |
| FO (Pin 14) | Frequency control | Digital input selecting 50Hz (FO = VCC), 60Hz (FO = GND), or user-defined notch (external fEOSC)-configures filter null without firmware or registers. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency ∆Σ architecture | Single-cycle settling ensures each 15Hz output corresponds exactly to one analog sample-enables deterministic real-time multiplexing of multiple sensors. |
| Integrated oscillator | Eliminates crystals, capacitors, or external clocks-reduces BOM count and PCB area while guaranteeing 50/60Hz rejection accuracy over temperature. |
| Independent VREFCM and VINCM | Allows reference and signal paths to operate at different common-mode voltages-essential for isolated or remote-sensing bridge configurations. |
| Auto shutdown on CS high | Reduces supply current from 200 µA to 20 µA automatically-enables ultra-low-power wake-on-read architectures in battery-operated devices. |
| Flexible 3-wire interface | Hardware-configurable SCK direction and CS-triggered data flow-requires no initialization sequence or command protocol, simplifying MCU firmware integration. |
Applications
| Weight Scales | Direct Temperature Measurement |
|---|---|
Use Scenario: High-resolution weighing of industrial loads using strain-gage-based load cells with mV/V output. IC Role / Device Role / Timing Role: Precision ADC digitizing bridge differential output; 15Hz output rate matches mechanical settling time of load platforms. Use Value: 24-bit resolution and 2 ppm INL enable 1:1,000,000 dynamic range-supporting Class III legal-for-trade accuracy without external gain stages. | Use Scenario: Direct digitization of thermistor or RTD voltage outputs in HVAC and process control sensors. IC Role / Device Role / Timing Role: Ratiometric ADC using same excitation source for reference and sensor-rejects lead-wire resistance drift via differential topology. Use Value: 140 dB DC common-mode rejection eliminates ground-loop errors from long sensor cables; 0.23 ppm noise enables <0.01°C resolution at 25°C. |
| Gas Analyzers | Industrial Process Control |
Use Scenario: Low-drift measurement of electrochemical sensor outputs in toxic gas detection modules. IC Role / Device Role / Timing Role: Low-power ADC sampling microamp-level currents converted to voltage via precision transimpedance amplifier. Use Value: 200 µA supply current and auto-sleep allow continuous monitoring on 2xAA batteries for >2 years; 110 dB 50/60Hz rejection prevents false alarms from ambient EMI. | Use Scenario: Analog input module in PLC I/O cards acquiring signals from pressure, flow, and level transmitters. IC Role / Device Role / Timing Role: Isolated channel ADC with galvanically separated reference and input paths-configured for 4–20 mA loop-powered sensors. Use Value: GND-to-VCC independent common-mode range allows direct interfacing to field-side grounded transmitters without level-shifting circuitry. |
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, 4kSPS max, integrated PGA and burn-out current sources; requires external clock or crystal; 100 µA typical active current. | Targets higher-speed multi-channel systems with onboard signal conditioning; lacks built-in 50/60Hz notch-requires digital post-processing. | Select when PGA gain flexibility and sensor diagnostics (burn-out) are needed; avoid if 50/60Hz line rejection must be hardware-guaranteed. |
| MAX11206ETL+ | 24-bit, 10SPS, internal oscillator, 105dB 50/60Hz rejection, 125 µA active current; 12-pin TDFN package. | Lower integration (no FO pin for dual-frequency selection); reduced common-mode range (0.1V to VCC–0.1V for REF/IN). | Select for space-constrained designs needing similar noise/line-rejection but accepting narrower common-mode compliance and fixed 50Hz-only notch. |
Compared with ADS124S08IPW and MAX11206ETL+, the LTC2415CGN#PBF uniquely combines hardware-selectable 50Hz/60Hz rejection, full GND-to-VCC common-mode support, and zero-latency output-making it optimal for cost-sensitive, low-power, mains-immune industrial sensor nodes where firmware simplicity and guaranteed EMI immunity are critical.
Availability
LTC2415CGN#PBF is available at Aetrix Electronics and suitable for weight scales, industrial process control, and gas analyzers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LTC2415CGN#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2415CGN#PBF belongs to ADI's legacy Linear Technology precision delta-sigma ADC family, engineered specifically for low-power, high-accuracy sensor digitization in harsh industrial environments where line-frequency immunity and long-term stability are non-negotiable.
FAQ
What is the maximum output data rate of the LTC2415CGN#PBF?
The LTC2415CGN#PBF has a fixed output data rate of 15 Hz when using its internal oscillator. This rate is determined by the internal digital filter structure and cannot be increased via external clocking-the device is optimized for low-frequency, high-resolution measurements rather than speed.
Can the LTC2415CGN#PBF operate with a 3.3V supply?
Yes, the LTC2415CGN#PBF operates over a 2.7V to 5.5V supply range, fully supporting 3.3V systems. At 3.3V, typical supply current remains 200 µA in conversion mode, and all specified AC/DC performance-including 110dB 50/60Hz rejection and 2 ppm INL-is maintained per datasheet conditions.
How does the FO pin configure 50Hz vs 60Hz rejection on the LTC2415CGN#PBF?
On the LTC2415CGN#PBF, connecting FO to VCC selects 50Hz notch rejection, while connecting FO to GND selects 60Hz notch rejection. This hardware-selectable configuration fixes the digital filter null without firmware or register writes-ensuring deterministic, jitter-free line-frequency immunity.
Does the LTC2415CGN#PBF require external passive components for its oscillator?
No, the LTC2415CGN#PBF includes a fully integrated oscillator requiring no external crystals, resonators, or timing capacitors. This eliminates component count, layout sensitivity, and temperature drift associated with external timing elements-directly enabling its specified 50/60Hz rejection performance.
What is the purpose of the seven GND pins on the LTC2415CGN#PBF SSOP package?
The seven GND pins (Pins 1, 7–10, 15, 16) on the LTC2415CGN#PBF are internally connected to minimize ground impedance and improve PSRR/CMRR. All must be soldered to a low-inductance ground plane-failure to connect any compromises the specified 140 dB DC common-mode rejection and introduces measurement offset drift.
LTC2415CGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2415CGN#PBF FAQ
1.How can I place an order for LTC2415CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2415CGN#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 LTC2415CGN#PBF reliable?
The price and inventory of LTC2415CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2415CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2415CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2415CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2415CGN#PBF?
LTC2415CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2415CGN#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 LTC2415CGN#PBF?
For technical support, including LTC2415CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2415CGN#PBF requirements.
6.How does Aetrix verify that LTC2415CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2415CGN#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 LTC2415CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2415CGN#PBF?
All LTC2415CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2415CGN#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 LTC2415CGN#PBF part is unused and in its original packaging.
Return procedure for LTC2415CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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