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Analog Devices Inc. LTC2412CGN#PBF
- Part No.:
- LTC2412CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2412CGN#PBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,114
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Product details
Overview
LTC2412CGN#PBF from Analog Devices (formerly Linear Technology) is a 2-channel, 24-bit no-latency delta-sigma ADC with integrated oscillator, 2 ppm INL, 0.16 ppm RMS noise, and differential input/reference support across GND to VCC common-mode range. It delivers 110 dB line-frequency rejection at 50/60 Hz and operates from 2.7V to 5.5V - ideal for precision weight scales and strain-gage transducer interfaces.
For engineers reviewing the LTC2412CGN#PBF datasheet, LTC2412CGN#PBF pinout, LTC2412CGN#PBF application, or LTC2412CGN#PBF equivalent, key selection criteria include its dual-channel ping-pong conversion architecture, internal notch filter configurability via FO pin, 200 µA active / 4 µA autosleep current, SPI/MICROWIRE-compatible 3-wire interface, and SSOP-16 package with five ground pins for low-noise layout.
Technical Context
The LTC2412CGN#PBF employs a third-order ∆Σ modulator with decimating FIR filter and on-chip autocalibration that performs offset and full-scale correction every conversion cycle. Its digital filter settles in a single cycle, eliminating latency and ensuring each output corresponds precisely to the just-completed conversion.
Channel selection is automatic and alternating (CH0/CH1 ping-pong), with channel ID embedded in the 32-bit output word. The FO pin selects internal 50 Hz (FO = VCC) or 60 Hz (FO = GND) notch filtering, or enables external clocking (fEOSC = 2.56–500 kHz) for user-defined rejection frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes - guarantees monotonicity and full dynamic range utilization in high-precision measurement. |
| INL | 2 ppm of VREF - ensures sub-1 LSB error over full scale at 24-bit resolution, critical for 6½-digit DVMs. |
| RMS Noise | 0.16 ppm (0.8 µVRMS at 5V reference) - enables 22.5 ENOB and stable 24-bit effective resolution in low-drift applications. |
| Supply Current | 200 µA active, 4 µA autosleep - supports battery-powered instrumentation with minimal power budget impact. |
| Input Range | ±0.5 × VREF differential, with independent VINCM and VREFCM from GND to VCC - allows ratiometric sensing and remote sensor excitation without level-shifting. |
| Line Rejection | ≥110 dB at 50/60 Hz ±2% - eliminates mains interference in industrial environments without external filtering. |
| Reference Range | 0.1 V to VCC - supports flexible scaling from low-voltage sensors to full-supply references. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0°C to 70°C operating temperature range, with five dedicated ground pins (Pins 8, 9, 10, 15, 16) for optimal analog grounding and supply decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | 2.7V–5.5V operation; requires 10 µF tantalum + 0.1 µF ceramic bypass close to pin for stable low-noise performance. |
| REF+ / REF– (Pins 2, 3) | Differential reference inputs | Accept 0.1V–VCC differential voltage; enable ratiometric measurements and eliminate reference drift coupling. |
| CH0+, CH0– (Pins 4, 5) | Channel 0 differential analog inputs | Support bipolar input range ±0.5×VREF; common-mode voltage independently set from GND to VCC. |
| CH1+, CH1– (Pins 6, 7) | Channel 1 differential analog inputs | Identical specs to CH0; alternated automatically with CH0 for seamless dual-sensor monitoring. |
| GND (Pins 8, 9, 10, 15, 16) | Analog/digital ground return | Five internally connected pins minimize ground impedance and reduce noise coupling between analog and digital sections. |
| CS (Pin 11) | Active-low chip select | Wakes device from sleep (4 µA) into data output mode; aborting transfer by pulling high restarts conversion immediately. |
| SDO (Pin 12) | Three-state serial data output | Outputs 32-bit conversion result (including channel ID and sign); high-Z when CS = HIGH for bus sharing. |
| SCK (Pin 13) | Bidirectional serial clock | Auto-configures as output (internal SCK mode) or input (external SCK mode) based on power-up state or CS edge. |
| FO (Pin 14) | Frequency control input | Selects 50 Hz (FO = VCC), 60 Hz (FO = GND), or external clock (FO = fEOSC) for programmable notch filtering. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency conversion | Digital filter settles in one cycle - output data corresponds exactly to the completed conversion, enabling real-time closed-loop control. |
| Automatic channel ping-pong | Alternates between CH0 and CH1 without software intervention; channel ID included in output word simplifies multi-sensor firmware. |
| Integrated oscillator | Eliminates external crystals/capacitors - reduces BOM count and PCB area while guaranteeing precise 50/60 Hz rejection. |
| DC common-mode rejection | >140 dB - rejects ground offsets and sensor common-mode drift, critical for bridge-based transducers. |
| Flexible reference interface | Supports any VREF from 0.1V to VCC with independent VREFCM - enables direct connection to low-voltage references or sensor excitation outputs. |
Applications
| Weight Scales | Strain-Gage Transducers |
|---|---|
Use Scenario: High-resolution load cell readout in commercial and industrial weighing systems requiring NTEP or OIML certification. IC Role / Device Role / Timing Role: Direct digitizer for mV/V bridge outputs; provides 24-bit resolution with <2 ppm INL and 0.16 ppm noise to resolve sub-gram changes at full scale. Use Value: Eliminates external amplification and calibration circuitry - reduces system cost and thermal drift while meeting 6000d+ resolution requirements. | Use Scenario: Precision force and pressure measurement using Wheatstone bridge sensors in test equipment and process control. IC Role / Device Role / Timing Role: Ratiometric ADC with independent VINCM/VREFCM - accepts bridge excitation directly and rejects common-mode shifts from cable length or temperature gradients. Use Value: Achieves >140 dB DC common-mode rejection and 110 dB 50/60 Hz line rejection - enables stable readings in electrically noisy factory environments. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: High-accuracy RTD or thermocouple digitization in environmental monitoring and HVAC control systems. IC Role / Device Role / Timing Role: Dual-channel differential converter with autosleep - measures cold-junction compensation (CJC) and thermocouple voltage simultaneously with no software multiplexing overhead. Use Value: 4 µA sleep current extends battery life in portable meters; 24-bit resolution resolves <0.01°C steps with platinum RTDs. | Use Scenario: Low-drift concentration detection in electrochemical or NDIR gas sensors where microvolt-level signal integrity is critical. IC Role / Device Role / Timing Role: Low-noise, low-power ADC with autocalibration - performs continuous offset/full-scale correction per conversion to suppress sensor aging and thermal hysteresis. Use Value: 0.16 ppm RMS noise and 2 ppm INL ensure long-term stability required for ppm-level gas detection accuracy over temperature and time. |
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 temperature sensor; SPI-only interface; 2.5–5.5V supply; 350 µA active current. | Includes programmable gain amplifier and internal temperature diode - suited for single-ended sensors and embedded diagnostics, but lacks dual-differential channels and FO-configurable notch. | Select when system requires on-chip signal conditioning and temperature monitoring; avoid when strict 2-channel ping-pong or 50/60 Hz rejection is mandatory. |
| MAX11206ETL+ | 24-bit, 10 SPS, internal oscillator, 1.2 µA sleep current; SPI interface; 2.7–3.6V supply only; 16-pin TQFN. | Ultra-low sleep current and narrower supply range - optimized for energy-harvesting or coin-cell applications, but lacks 5.5V tolerance and SSOP package compatibility. | Select for ultra-low-power portable designs with 3.3V-only rails; avoid when 5V operation, 2.7–5.5V flexibility, or SSOP footprint is required. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2412CGN#PBF uniquely combines dual differential channels with FO-selectable 50/60 Hz notch filtering, 2.7–5.5V operation, and SSOP-16 packaging - making it optimal for industrial weigh scales and bridge-based transducer systems requiring robust line-frequency immunity and layout simplicity.
Availability
LTC2412CGN#PBF is available at Aetrix Electronics and suitable for weight scales, strain-gage transducers, and direct temperature measurement systems requiring stable component supply, long-term calibration retention, and industrial-grade temperature performance (0°C to 70°C).
Supply support for LTC2412CGN#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-performance delta-sigma ADCs, voltage references, and power management ICs.
The LTC2412CGN#PBF belongs to Linear's micropower precision ADC family, designed specifically for high-resolution, low-drift industrial and instrumentation applications where line-frequency rejection, ratiometric accuracy, and dual-channel efficiency are essential.
FAQ
What is the operating temperature range for the LTC2412CGN#PBF?
The LTC2412CGN#PBF is rated for 0°C to 70°C operation, as indicated by the "C" grade suffix in its part number. This commercial-grade temperature range is validated per the Absolute Maximum Ratings table and applies to all electrical specifications unless otherwise noted in the datasheet. The LTC2412IGN#PBF variant extends this to –40°C to 85°C.
How does the FO pin configure the LTC2412CGN#PBF's notch filter?
The FO pin on the LTC2412CGN#PBF selects the first null frequency of its digital filter: tying FO to VCC configures 50 Hz rejection, tying FO to GND configures 60 Hz rejection, and driving FO with an external clock (fEOSC) sets rejection at fEOSC/2560. This configuration is active during conversion and requires no register writes - the LTC2412CGN#PBF uses the FO state at power-up or after CS falling edge.
Does the LTC2412CGN#PBF require external components for its oscillator?
No, the LTC2412CGN#PBF includes a fully integrated oscillator and requires no external crystals, capacitors, or resistors to achieve specified 50/60 Hz line-frequency rejection. The oscillator is factory-trimmed and temperature-compensated, delivering stable timing across the full 0°C to 70°C range without calibration - a key advantage over discrete oscillator solutions.
What is the function of the five GND pins on the LTC2412CGN#PBF SSOP package?
The five GND pins (Pins 8, 9, 10, 15, 16) on the LTC2412CGN#PBF are internally connected and provide low-impedance return paths for analog, digital, and supply currents. They minimize ground bounce, reduce noise coupling between sections, and improve PSRR - especially critical for 24-bit resolution. All five must be soldered to a solid ground plane for specified INL, noise, and rejection performance.
Can the LTC2412CGN#PBF interface directly with a 3.3V microcontroller SPI bus?
Yes, the LTC2412CGN#PBF supports 2.7V–5.5V operation and its digital I/O levels (VIH/VIL) are compatible with 3.3V logic: VIH ≥ 2.0V (for VCC = 2.7–3.3V) and VIL ≤ 0.6V ensure reliable communication with standard 3.3V MCUs. The SDO output drives VOH ≥ VCC – 0.5V and VOL ≤ 0.4V, meeting SPI voltage thresholds without level shifters.
LTC2412CGN#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):
- 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#PBF FAQ
1.How can I place an order for LTC2412CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2412CGN#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 LTC2412CGN#PBF reliable?
The price and inventory of LTC2412CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2412CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2412CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2412CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2412CGN#PBF?
LTC2412CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2412CGN#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 LTC2412CGN#PBF?
For technical support, including LTC2412CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2412CGN#PBF requirements.
6.How does Aetrix verify that LTC2412CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2412CGN#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 LTC2412CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2412CGN#PBF?
All LTC2412CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2412CGN#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 LTC2412CGN#PBF part is unused and in its original packaging.
Return procedure for LTC2412CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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