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Analog Devices Inc. LTC2430CGN#TRPBF
- Part No.:
- LTC2430CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2430CGN#TRPBF.pdf
- Description:
- IC ADC 20BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,342
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Product details
Overview
LTC2430CGN#TRPBF from Analog Devices (formerly Linear Technology) is a 20-bit micropower delta-sigma analog-to-digital converter with integrated oscillator, 3ppm integral nonlinearity, 0.56ppm RMS noise, and single-cycle settling time. It operates from 2.7V to 5.5V, supports differential input and reference with GND-to-VCC common mode range, and delivers 110dB 50/60Hz notch rejection - ideal for precision weigh scales and strain gauge transducers.
For engineers reviewing the LTC2430CGN#TRPBF datasheet, LTC2430CGN#TRPBF pinout, LTC2430CGN#TRPBF application, or LTC2430CGN#TRPBF equivalent, key selection criteria include its no-latency ∆Σ architecture, internal oscillator eliminating external timing components, flexible 3-wire SPI/MICROWIRE interface, and guaranteed no missing codes across temperature.
Technical Context
The LTC2430CGN#TRPBF implements a decimating FIR filter with on-chip auto-calibration that performs offset and full-scale correction in every conversion cycle. Its digital filter achieves first nulls at 50Hz or 60Hz ±2% depending on FO pin state, and supports external clocking for user-defined rejection frequencies.
It uses a 3-wire serial interface where SCK operates bidirectionally - as output in internal clock mode (19.2kHz) or input in external clock mode - and SDO provides conversion status during sleep/conversion and 24-bit data during output. CS controls wake/sleep transitions without register programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit with no missing codes - ensures monotonicity and unambiguous code mapping over full operating range. |
| INL | 3ppm of VREF - enables high-accuracy ratiometric measurements in precision sensor interfaces. |
| RMS Noise | 0.56ppm (2.8µVRMS at 5V) - supports >20.8 ENOB for low-drift DC measurements. |
| Supply Current | 200µA in conversion mode, 4µA in autosleep - enables battery-powered instrumentation with long duty cycles. |
| Common Mode Rejection | 120dB DC, 140dB at 50/60Hz - rejects ground shifts and line interference in industrial sensor nodes. |
| Input Range | ±0.5VREF differential with independent GND-to-VCC common mode on IN+/IN− - allows direct connection to bridge sensors without level-shifting. |
| Reference Range | 0.1V to VCC differential - supports flexible ratiometric sensing and remote voltage references. |
Pinout & Package
Package: 10-lead MSOP (GN), 3mm × 3mm, exposed pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | 2.7V–5.5V operation; requires local 10µF tantalum + 0.1µF ceramic bypass to GND. |
| REF+ / REF− (Pins 2, 3) | Differential reference inputs | Accept 0.1V–VCC differential reference; common mode range spans GND to VCC independently. |
| IN+ / IN− (Pins 4, 5) | Differential analog inputs | Support ±0.5VREF full-scale range; absolute voltage range extends to GND−0.3V/VCC+0.3V. |
| GND (Pin 6) | Analog/digital ground | Low-impedance connection required; serves as reference for all analog and digital circuitry. |
| CS (Pin 7) | Active-low chip select | Wakes ADC from autosleep (4µA) into conversion mode; aborts data transfer if toggled high mid-read. |
| FO (Pin 10) | Frequency control input | Selects 50Hz (FO = VCC), 60Hz (FO = GND), or external clock (FO = fEOSC) notch filtering. |
| SDO (Pin 8) | Three-state serial data output | Outputs 24-bit conversion result; shows conversion status (busy/idle) when CS is high. |
| SCK (Pin 9) | Bidirectional serial clock | Functions as output (19.2kHz) in internal mode or input in external mode; auto-configured at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| No latency ∆Σ architecture | Single-cycle digital filter settling ensures each output corresponds precisely to its input sample - critical for multiplexed sensor arrays. |
| Per-conversion auto-calibration | Continuous offset and full-scale correction eliminates drift due to temperature, supply variation, and aging - no manual recalibration needed. |
| Flexible 50/60Hz rejection | Hardware-selectable notch via FO pin eliminates need for software-based digital filtering or external notch circuits. |
| True differential input/reference | Independent GND-to-VCC common mode ranges on IN+/IN− and REF+/REF− enable direct interfacing with isolated or floating bridges. |
| 3-wire SPI/MICROWIRE compatibility | Zero-configuration interface with CS/SCK/SDO - interoperable with standard microcontroller peripherals without protocol translation. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
Use Scenario: High-resolution load cell readout in commercial and industrial weighing systems requiring <10ppm repeatability. IC Role / Device Role / Timing Role: Direct digitizer for mV-level bridge outputs; provides ratiometric measurement referenced to excitation voltage. Use Value: 3ppm INL and 0.56ppm RMS noise enable sub-gram resolution at 10kg full scale with minimal post-processing. | Use Scenario: Structural health monitoring using bonded foil or MEMS strain gauges in civil infrastructure or aerospace test benches. IC Role / Device Role / Timing Role: Precision front-end ADC with programmable 50/60Hz rejection to suppress ambient EMI in noisy environments. Use Value: 140dB 60Hz normal-mode rejection and GND-to-VCC input common mode range eliminate need for instrumentation amplifiers. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: RTD or thermistor-based temperature sensing in HVAC controllers and medical diagnostic equipment. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC with integrated reference support for 4-wire RTD configurations. Use Value: 200µA conversion current and autosleep mode extend battery life in portable handheld thermometers. | Use Scenario: Electrochemical gas sensor signal conditioning in portable air quality monitors detecting CO, NO₂, or O₃. IC Role / Device Role / Timing Role: Low-noise, low-drift digitizer for picoamp-level sensor currents converted via precision transimpedance amplifier. Use Value: 120dB DC common-mode rejection and 0.56ppm RMS noise preserve weak signal integrity against PCB leakage and thermal EMF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit, 4kSPS, integrated PGA and reference; higher power (380µA), SPI-only interface. | Requires external excitation control for bridge sensors; better suited for multi-channel scan systems. | Choose for higher resolution and integrated signal chain; avoid if board space or sleep current (<4µA) is critical. |
| LTC2410CGN#TRPBF | 24-bit, same pinout and feature set but higher resolution; 5ppm INL, 0.25ppm noise, 350µA conversion current. | Same footprint and interface; targets ultra-high-precision applications where 20-bit resolution is insufficient. | Choose for improved noise/INL at cost of higher supply current and price; verify layout compatibility with shared GN package. |
Compared with ADS124S08IPWR and LTC2410CGN#TRPBF, the LTC2430CGN#TRPBF offers the lowest autosleep current (4µA) and simplest external component count (no crystal, no PGA, no reference IC), making it optimal for space- and power-constrained single-sensor nodes.
Availability
LTC2430CGN#TRPBF is available at Aetrix Electronics and suitable for weight scales, strain gauge transducers, and direct temperature measurement requiring stable component supply, long-term calibration stability, and RoHS-compliant packaging.
Supply support for LTC2430CGN#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 LTC2430CGN#TRPBF belongs to ADI's legacy Linear Technology precision ADC family, designed specifically for low-power, high-accuracy sensor digitization in instrumentation, process control, and portable test equipment.
FAQ
What is the maximum recommended reference voltage for LTC2430CGN#TRPBF?
The LTC2430CGN#TRPBF supports differential reference voltages from 0.1V up to VCC. With VCC rated at 5.5V max, the maximum usable reference voltage is 5.5V. However, typical designs use 2.5V or 5V references to maintain optimal noise performance and headroom. The device guarantees 3ppm INL at 5V reference and 4.5V ≤ VCC ≤ 5.5V.
Does LTC2430CGN#TRPBF require external passive components for its internal oscillator?
No, the LTC2430CGN#TRPBF does not require any external passive components for its internal oscillator. The oscillator is fully integrated and factory-trimmed to deliver precise 50Hz or 60Hz notch filtering based solely on the logic level applied to the FO pin - eliminating crystals, capacitors, or resistors traditionally needed for timing accuracy.
How does the FO pin configure 50Hz vs 60Hz rejection in LTC2430CGN#TRPBF?
The FO pin configures line-frequency rejection by selecting the internal oscillator's base frequency: connecting FO to VCC selects the 128kHz oscillator variant for 50Hz notch (128kHz/2560), while connecting FO to GND selects the 153.6kHz variant for 60Hz notch (153.6kHz/2560). This hardware-selectable configuration requires no firmware changes or register writes in LTC2430CGN#TRPBF.
Can LTC2430CGN#TRPBF operate with a 3.3V supply and 2.5V reference?
Yes, LTC2430CGN#TRPBF is fully specified for operation with VCC = 3.3V and VREF = 2.5V. Electrical characteristics including 3ppm INL, 10ppm full-scale error, and 0.56ppm RMS noise are guaranteed across 2.7V–5.5V VCC and 0.1V–VCC reference range. Performance graphs in the datasheet confirm stable TUE and INL at 3.3V/2.5V conditions.
What is the function of the SDO pin during conversion and sleep states in LTC2430CGN#TRPBF?
In LTC2430CGN#TRPBF, the SDO pin serves dual roles: during conversion and sleep states, it functions as a conversion status indicator (low = busy, high = ready); during data output, it shifts out 24-bit conversion results. When CS is HIGH, SDO enters high-impedance state - enabling bus sharing without external tri-state logic.
LTC2430CGN#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:
- 20
- Sampling Rate (Per Second):
- 7.5
- 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:
- -
LTC2430CGN#TRPBF FAQ
1.How can I place an order for LTC2430CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2430CGN#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 LTC2430CGN#TRPBF reliable?
The price and inventory of LTC2430CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2430CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2430CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2430CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2430CGN#TRPBF?
LTC2430CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2430CGN#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 LTC2430CGN#TRPBF?
For technical support, including LTC2430CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2430CGN#TRPBF requirements.
6.How does Aetrix verify that LTC2430CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2430CGN#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 LTC2430CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2430CGN#TRPBF?
All LTC2430CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2430CGN#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 LTC2430CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2430CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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