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Analog Devices Inc. LTC2412CGN#TRPBF
- Part No.:
- LTC2412CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2412CGN#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
LTC2412CGN#TRPBF from Analog Devices (formerly Linear Technology) is a 2-channel, 24-bit no-latency delta-sigma ADC with integrated oscillator, differential input/reference support, and 2 ppm INL. It operates from 2.7V to 5.5V, draws only 200 µA in conversion mode, and delivers 0.16 ppm RMS noise-enabling high-precision direct sensor digitization in weight scales and strain-gage transducers.
For engineers reviewing the LTC2412CGN#TRPBF datasheet, LTC2412CGN#TRPBF pinout, LTC2412CGN#TRPBF application, or LTC2412CGN#TRPBF equivalent, key selection criteria include its 2-channel ping-pong differential architecture, 50/60 Hz notch filtering via FO pin configuration, GND-to-VCC common-mode input/reference flexibility, and SPI/MICROWIRE-compatible 3-wire interface with no external timing components required.
Technical Context
The LTC2412CGN#TRPBF implements a third-order ∆Σ modulator with decimating FIR filter, achieving single-cycle digital filter settling and true no-latency operation-each conversion result corresponds precisely to the sampled input without delay or averaging artifacts. Its autocalibration engine performs offset and full-scale correction every cycle, eliminating drift-induced errors without interrupting continuous measurement flow.
Channel selection is fully automatic: CH0 is selected at power-up, then alternates (ping-pong) between CH0 and CH1 on successive conversions, with channel ID embedded in the 32-bit output word. The FO pin selects internal 50 Hz (FO = VCC), 60 Hz (FO = GND), or external clock-driven rejection-enabling precise line-frequency interference suppression in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full dynamic range utilization for precision metrology. |
| INL | 2 ppm of VREF-ensures sub-ppm linearity error across full scale, critical for 6-digit DVM and calibration-grade instrumentation. |
| RMS Noise | 0.16 ppm of VREF-translates to ~0.8 µV RMS noise with 5V reference, enabling 22.5 ENOB in low-frequency sensing. |
| Supply Current | 200 µA (conversion), 4 µA (autosleep)-supports battery-powered portable instruments with multi-year runtime. |
| Input Range | ±0.5 × VREF differential, with independent GND-to-VCC common-mode for VINCM and VREFCM-enables ratiometric remote sensing and floating bridge interfaces. |
| Notch Rejection | ≥110 dB at 50 Hz or 60 Hz ±2%-rejects mains interference without external filters or software post-processing. |
| Interface | 3-wire SPI/MICROWIRE compatible-requires only CS, SCK, SDO; supports both internal and external clock modes with no configuration registers. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0°C to 70°C operating temperature range, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (1) | Positive supply input | 2.7V–5.5V analog/digital supply; requires local 10µF + 0.1µF bypass for stable low-noise operation. |
| REF+ (2), REF– (3) | Differential reference inputs | Accept 0.1V–VCC differential voltage; common-mode range independent of input channels-enables flexible ratiometric sensor excitation. |
| CH0+, CH0– (4,5) | Channel 0 differential analog inputs | Full GND-to-VCC common-mode range; ±0.5×VREF differential span-supports direct connection to strain gages or thermocouples. |
| CH1+, CH1– (6,7) | Channel 1 differential analog inputs | Identical electrical specs to CH0; automatic ping-pong switching eliminates need for external multiplexer control logic. |
| GND (8,9,10,15,16) | Ground terminals | Five dedicated ground pins internally tied-must all be connected to low-impedance ground plane to minimize noise and ensure PSRR performance. |
| CS (11) | Active-low chip select | Wakes device from sleep (4 µA) into data output mode; HIGH = auto-sleep after conversion; LOW = enable SDO and initiate serial read. |
| SDO (12) | 3-state serial data output | Outputs 32-bit conversion result (including channel ID and sign bit); Hi-Z when CS = HIGH-allows bus sharing with other SPI peripherals. |
| SCK (13) | Bidirectional serial clock | Auto-configures as output (internal clock mode) or input (external clock mode) based on power-up state-no register writes needed. |
| FO (14) | Frequency control input | Selects 50 Hz (FO = VCC), 60 Hz (FO = GND), or user-defined notch (FO = external clock)-determines digital filter null location without changing hardware. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency conversion | Single-cycle digital filter settling ensures each 32-bit output corresponds exactly to the most recent analog sample-no history-dependent averaging or group delay. |
| Automatic channel ping-pong | Hardware-managed alternating conversion between CH0 and CH1 with embedded channel ID in output word-eliminates firmware polling or timing-critical MUX control. |
| Integrated oscillator | On-chip precision oscillator requires zero external components-reduces BOM count, PCB area, and susceptibility to layout-induced clock jitter. |
| GND-to-VCC common-mode flexibility | Independent VINCM and VREFCM ranges allow simultaneous use of grounded sensors and floating references-ideal for isolated bridge or thermocouple front-ends. |
| Per-conversion autocalibration | Offset and full-scale corrections applied every cycle without interrupting measurement flow-maintains accuracy over temperature and time without user intervention. |
Applications
| Weight Scales | Strain-Gage Transducers |
|---|---|
Use Scenario: High-resolution load cell measurement in platform scales and industrial weighing systems. IC Role / Device Role / Timing Role: Direct digitizer for mV/V bridge outputs, providing 24-bit resolution and 2 ppm INL without signal conditioning. Use Value: Enables 1:10⁶ dynamic range and <10 µg repeatability in Class III legal-for-trade applications using single-chip solution. | Use Scenario: Precision force and pressure sensing in test equipment and structural monitoring. IC Role / Device Role / Timing Role: Differential ADC with ratiometric reference support, accepting excitation-referenced bridge signals. Use Value: Eliminates need for separate instrumentation amplifier and reference buffer-reducing offset drift and thermal mismatch errors. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: Cold-junction compensation and thermocouple voltage digitization in process control systems. IC Role / Device Role / Timing Role: Dual-channel ADC measuring thermocouple voltage (CH0) and RTD/thermistor (CH1) simultaneously. Use Value: Hardware ping-pong enables synchronized temperature and reference measurements-improving CJC accuracy without CPU overhead. | Use Scenario: Low-drift concentration detection in electrochemical or NDIR gas sensors. IC Role / Device Role / Timing Role: High-stability ADC for microamp-level current-to-voltage conversion outputs. Use Value: 0.16 ppm RMS noise and 140 dB DC common-mode rejection suppress EMI in noisy factory environments-reducing false alarms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 24-bit delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit, 4-kSPS, integrated PGA and reference; requires external crystal; no built-in 50/60 Hz notch. | Targets multi-sensor systems needing programmable gain; less suitable for ultra-low-noise, mains-rejected single-sensor apps. | Choose ADS124S08IPWR when system requires on-chip PGA or higher throughput; LTC2412CGN#TRPBF preferred for lowest noise, no-latency, and self-contained notch filtering. |
| MAX11206ETL+ | 24-bit, 10 SPS, internal oscillator, but single-channel only; 3.5 ppm INL vs 2 ppm; 0.25 ppm noise. | Designed for cost-sensitive single-input applications; lacks dual-channel ping-pong and identical line-rejection capability. | Choose MAX11206ETL+ for space-constrained single-sensor designs; LTC2412CGN#TRPBF required when dual-channel synchronization and superior line rejection are mandatory. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2412CGN#TRPBF uniquely combines dual-channel ping-pong operation, on-chip 50/60 Hz notch filtering, and 2 ppm INL in a single SSOP-16 package-making it optimal for high-accuracy, low-power, mains-immune sensor digitization where minimal external components and deterministic latency are critical.
Availability
LTC2412CGN#TRPBF is available at Aetrix Electronics and suitable for weight scales, strain-gage transducers, and direct temperature measurement requiring stable component supply across industrial production lifecycles.
Supply support for LTC2412CGN#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2412CGN#TRPBF belongs to ADI's precision delta-sigma ADC product line, engineered specifically for ultra-low-noise, mains-rejected, direct sensor interfacing in battery-powered and metrology-grade instrumentation.
FAQ
What is the operating temperature range for the LTC2412CGN#TRPBF?
The LTC2412CGN#TRPBF is specified for operation from 0°C to 70°C (Commercial grade). This range is confirmed by the "C" suffix in the part number and documented in the Absolute Maximum Ratings table. It is distinct from the industrial-grade LTC2412IGN#TRPBF (–40°C to 85°C) and must be selected accordingly for ambient thermal requirements.
How does the FO pin configure the LTC2412CGN#TRPBF for 50 Hz versus 60 Hz rejection?
The FO pin configures the LTC2412CGN#TRPBF's digital filter null: tying FO to VCC selects internal 50 Hz rejection (fEOSC = 128 kHz), while tying FO to GND selects 60 Hz rejection (fEOSC = 153.6 kHz). Both configurations deliver ≥110 dB attenuation at the respective line frequency ±2%, with no external components required.
Does the LTC2412CGN#TRPBF require external calibration components or registers?
No-the LTC2412CGN#TRPBF performs full offset and full-scale autocalibration automatically every conversion cycle using on-chip circuitry. No external components, EEPROM storage, or register writes are needed. Calibration is transparent, maintains accuracy over temperature, and does not interrupt the conversion/data output cycle.
What is the function of the multiple GND pins (8, 9, 10, 15, 16) on the LTC2412CGN#TRPBF?
The five GND pins on the LTC2412CGN#TRPBF are internally connected and optimized for low-impedance ground return paths for analog, digital, and supply currents. All five must be soldered to a solid ground plane to ensure specified PSRR (>120 dB), noise performance, and thermal stability-omitting any degrades common-mode rejection and increases measurement uncertainty.
Can the LTC2412CGN#TRPBF interface directly with a microcontroller SPI port?
Yes-the LTC2412CGN#TRPBF uses a 3-wire interface compatible with standard SPI and MICROWIRE protocols. It supports both internal clock mode (SCK output) and external clock mode (SCK input), requires no configuration registers, and outputs 32-bit words with channel ID and sign bit-enabling seamless integration with most MCU SPI peripherals without custom timing firmware.
LTC2412CGN#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):
- 7.5
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI
- 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:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2412CGN#TRPBF FAQ
1.How can I place an order for LTC2412CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2412CGN#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 LTC2412CGN#TRPBF reliable?
The price and inventory of LTC2412CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2412CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2412CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2412CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2412CGN#TRPBF?
LTC2412CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2412CGN#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 LTC2412CGN#TRPBF?
For technical support, including LTC2412CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2412CGN#TRPBF requirements.
6.How does Aetrix verify that LTC2412CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2412CGN#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 LTC2412CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2412CGN#TRPBF?
All LTC2412CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2412CGN#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 LTC2412CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2412CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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