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Analog Devices Inc. LTC2430IGN#PBF
- Part No.:
- LTC2430IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2430IGN#PBF.pdf
- Description:
- IC ADC 20BIT SIGMA-DELTA 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:200
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Product details
Overview
LTC2430IGN#PBF 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/reference with GND-to-VCC common mode range, and delivers 110dB 50/60Hz notch rejection-ideal for precision weigh scales and strain gauge transducers in industrial instrumentation.
For engineers reviewing the LTC2430IGN#PBF datasheet, LTC2430IGN#PBF pinout, LTC2430IGN#PBF application, or LTC2430IGN#PBF 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 LTC2430IGN#PBF implements a decimating FIR filter with on-chip auto-calibration that performs offset and full-scale correction every conversion cycle-ensuring stability over temperature, supply voltage, and time. Its delta-sigma modulator uses an internal 153.6kHz oscillator (FO = GND) or 128kHz oscillator (FO = VCC), enabling precise 60Hz or 50Hz line-frequency rejection without external components.
It supports two serial interface modes: internal SCK (SCK pin outputs clock at 19.2kHz) or external SCK (SCK pin accepts user-provided clock up to 2MHz). The FO pin selects internal oscillator frequency and thus notch location (fEOSC/2560), while CS controls power state transitions between sleep (4µA), conversion (200µA), and data output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit with no missing codes-guarantees monotonicity and unambiguous digital representation of analog input. |
| INL | 3ppm of VREF-enables high-accuracy ratiometric measurements in precision sensor interfaces. |
| RMS Noise | 0.56ppm (2.8µV RMS at VREF = 5V)-supports >20.8 ENOB for low-drift DC measurements. |
| Supply Current | 200µA in conversion mode, 4µA in autosleep-enables battery-powered portable instrumentation. |
| Common Mode Rejection | 120dB DC, 140dB at 50/60Hz-rejects ground bounce and EMI in noisy industrial environments. |
| Reference Range | 0.1V to VCC differential-allows flexible ratiometric sensing with low-voltage references or remote sensing. |
| Input Range | –0.5VREF to +0.5VREF differential, VINCM = GND to VCC-supports true bipolar measurement with wide common mode tolerance. |
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 10µF tantalum + 0.1µF ceramic bypass to GND for noise immunity. |
| REF+ / REF– (Pins 2, 3) | Differential reference inputs | Accept 0.1V–VCC differential voltage; common mode range spans GND to VCC-enables remote sensing and ratiometric configurations. |
| IN+ / IN– (Pins 4, 5) | Differential analog inputs | Support –0.5VREF to +0.5VREF differential range; absolute voltage range extends beyond rails (GND–0.3V to 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 | Controls power state: LOW enables data output and wakes ADC; HIGH forces autosleep (4µA). |
| FO (Pin 8) | Frequency control input | Configures internal oscillator: GND → 60Hz notch, VCC → 50Hz notch, external clock → fEOSC/2560 null. |
| SCK (Pin 9) | Bidirectional serial clock | Outputs internal 19.2kHz clock (mode auto-selected at power-up) or accepts external clock ≤2MHz for custom data rates. |
| SDO (Pin 10) | Three-state serial data output | Delivers 24-bit conversion result; high-Z when CS = HIGH; indicates conversion status during sleep/conversion phases. |
Key Features
| Feature | Design Value |
|---|---|
| No latency ∆Σ architecture | Single-cycle digital filter settling ensures each output corresponds exactly to the most recent conversion-critical for multiplexed sensor arrays. |
| Per-conversion auto-calibration | Continuous offset and full-scale correction eliminates drift-related errors without interrupting operation or requiring user intervention. |
| Flexible 50/60Hz rejection | Hardware-selectable notch via FO pin-no software configuration or external filtering needed for AC-line-immune measurements. |
| True differential input/reference | Independent GND-to-VCC common mode ranges for IN+/IN– and REF+/REF– enable robust remote sensing and floating bridge interfaces. |
| Ultra-low sleep current | 4µA autosleep current allows multi-year battery life in portable DVMs and handheld test equipment. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
|
Use Scenario: High-resolution load cell readout in platform scales and industrial weighing systems operating in 50Hz/60Hz mains environments. IC Role / Device Role / Timing Role: Direct digitizer for mV-level bridge outputs; provides 20-bit resolution with 110dB line-frequency rejection and zero-latency output. Use Value: Eliminates need for external anti-aliasing filters or software averaging-reduces BOM cost and firmware complexity while maintaining ±0.001% accuracy. |
Use Scenario: Precision measurement of mechanical stress in structural monitoring and material testing equipment. IC Role / Device Role / Timing Role: Ratiometric ADC interfacing to Wheatstone bridges; leverages differential reference and wide common mode range to reject common-mode noise from long cable runs. Use Value: Enables direct connection to unamplified strain gauges with <1ppm/°C offset drift-improving long-term calibration stability without recalibration. |
| Direct Temperature Measurement | Gas Analyzers |
|
Use Scenario: High-accuracy RTD or thermistor readout in environmental chambers and HVAC control systems. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC with programmable 50/60Hz rejection-configured for 2-, 3-, or 4-wire RTD sensing using external reference. Use Value: Achieves <0.01°C resolution over –40°C to +85°C without external gain stages or chopper amplifiers-reducing system size and thermal EMF errors. |
Use Scenario: Electrochemical gas sensor signal conditioning in portable air quality monitors and industrial safety detectors. IC Role / Device Role / Timing Role: Low-power, high-precision ADC for nA-level current-to-voltage conversion; operates in autosleep between readings to extend battery life. Use Value: Delivers sub-ppm RMS noise and 3ppm INL at 200µA supply current-enabling detection of trace gas concentrations (<1ppm) with minimal power budget. |
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 |
|---|---|---|---|
| ADS124S08IPW | 24-bit, 4kSPS, SPI interface, integrated PGA and reference; requires external clock for 50/60Hz rejection. | Higher resolution but higher power (350µA active); better suited for multi-channel sensor hubs with programmable gain. | Select ADS124S08IPW when system requires on-chip PGA, multiple analog inputs, or higher throughput-accept trade-off in quiescent current and external notch implementation. |
| LTC2410CGN#PBF | 24-bit, pin-compatible, same package; higher resolution but slower conversion (133ms vs 131ms), no FO pin-fixed 50Hz rejection only. | Identical footprint and interface; lacks FO-configurable notch-requires redesign if 60Hz operation is needed. | Select LTC2410CGN#PBF only when 24-bit resolution is mandatory and 50Hz-only rejection suffices; verify layout compatibility with identical pinout. |
Compared with ADS124S08IPW and LTC2410CGN#PBF, the LTC2430IGN#PBF uniquely combines 20-bit precision, hardware-selectable 50/60Hz rejection, and 4µA autosleep-making it optimal for cost-sensitive, single-channel, battery-powered instrumentation where flexibility and ultra-low standby power are critical.
Availability
LTC2430IGN#PBF is available at Aetrix Electronics and suitable for precision weigh scales, strain gauge transducers, and direct temperature measurement systems requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.
Supply support for LTC2430IGN#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2430IGN#PBF belongs to ADI's legacy Linear Technology precision ADC family, designed specifically for low-power, high-accuracy sensor digitization in demanding industrial and instrumentation applications-emphasizing stability, ease of use, and minimal external component count.
FAQ
What is the operating temperature range for the LTC2430IGN#PBF?
The LTC2430IGN#PBF is specified for operation from –40°C to +85°C (Industrial grade). This range is confirmed in the Absolute Maximum Ratings table and applies to all electrical characteristics unless otherwise noted. The "I" suffix in the part number explicitly denotes this extended temperature capability, distinguishing it from the commercial-grade "C" version (0°C to 70°C).
Does the LTC2430IGN#PBF require external passive components for basic operation?
No, the LTC2430IGN#PBF requires only two external capacitors for stable operation: a 10µF tantalum capacitor and a 0.1µF ceramic capacitor placed in parallel between VCC and GND. No external crystal, oscillator, or timing resistors are needed-the internal oscillator is fully self-contained and configurable via the FO pin for 50Hz or 60Hz rejection.
How does the FO pin affect conversion time and filter performance in the LTC2430IGN#PBF?
When FO = GND, the LTC2430IGN#PBF uses a 153.6kHz internal oscillator, resulting in a typical conversion time of 132.0ms and a 60Hz ±2% notch. When FO = VCC, it uses a 128kHz oscillator, extending conversion time to 160.2ms and shifting the notch to 50Hz ±2%. Both configurations deliver ≥110dB rejection at the respective line frequency without external components.
Can the LTC2430IGN#PBF interface directly with a microcontroller SPI peripheral?
Yes, the LTC2430IGN#PBF supports standard SPI protocol via its 3-wire interface (CS, SCK, SDO). In internal SCK mode, it outputs a 19.2kHz clock synchronized to data; in external SCK mode, it accepts clocks up to 2MHz. The device is compatible with both SPI and MICROWIRE protocols, requiring no configuration registers-data is read on SCK falling edge with CS held LOW.
What is the maximum differential reference voltage supported by the LTC2430IGN#PBF?
The LTC2430IGN#PBF supports a differential reference voltage (VREF = REF+ – REF–) from 0.1V up to VCC. For example, with VCC = 5.5V, VREF may be as high as 5.5V. The specification is explicitly stated in the Electrical Characteristics table under "VREF Reference Differential Voltage Range" and applies across the full operating temperature range.
LTC2430IGN#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:
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2430IGN#PBF FAQ
1.How can I place an order for LTC2430IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2430IGN#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 LTC2430IGN#PBF reliable?
The price and inventory of LTC2430IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2430IGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC2430IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2430IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2430IGN#PBF?
LTC2430IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2430IGN#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 LTC2430IGN#PBF?
For technical support, including LTC2430IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2430IGN#PBF requirements.
6.How does Aetrix verify that LTC2430IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2430IGN#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 LTC2430IGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC2430IGN#PBF?
All LTC2430IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2430IGN#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 LTC2430IGN#PBF part is unused and in its original packaging.
Return procedure for LTC2430IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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