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Analog Devices Inc. LTC2376IDE-18#PBF
- Part No.:
- LTC2376IDE-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2376IDE-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,659
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Product details
Overview
LTC2376IDE-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 250ksps successive approximation register (SAR) analog-to-digital converter with ±1.75LSB INL max, 102dB SNR at 2kHz, and fully differential ±VREF input range (2.5V to 5.1V reference). It operates from a single 2.5V analog supply and supports 1.8V–5V I/O logic, enabling high-precision data acquisition in compact, low-power systems such as portable instrumentation and industrial process control.
For engineers reviewing the LTC2376IDE-18#PBF datasheet, LTC2376IDE-18#PBF pinout, LTC2376IDE-18#PBF application, or LTC2376IDE-18#PBF equivalent, key selection criteria include guaranteed 18-bit no-missing-codes performance, digital gain compression (DGC) for single-supply amplifier interfacing, internal conversion clock, daisy-chain SPI interface, and operation across –40°C to +85°C.
Technical Context
The LTC2376IDE-18#PBF implements a charge-redistribution SAR architecture with a 18-bit CDAC and differential comparator, achieving zero-cycle latency and no pipeline delay. Its conversion timing is governed by an internal oscillator (tCONV = 1.9–3µs), eliminating external clock dependency.
It features dual power domains: VDD (2.375–2.625V) for analog core and OVDD (1.71–5.25V) for digital I/O, enabling flexible host interface voltage selection. The REF/DGC pin selects between full ±VREF input range (DGC disabled) or compressed 0.1×VREF to 0.9×VREF range (DGC enabled), preserving 18-bit resolution while relaxing driver amplifier supply requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 distinct output codes with guaranteed no missing codes across temperature. |
| Sampling Rate | 250ksps - enables real-time capture of signals up to ~125kHz Nyquist bandwidth without undersampling. |
| SNR | 102dB (typ, fIN = 2kHz, VREF = 5V) - corresponds to ~16.7 effective bits, supporting high-fidelity signal reconstruction. |
| INL | ±1.75LSB (max) - ensures monotonicity and accurate end-point linearity for precision measurement applications. |
| Power Dissipation | 3.4mW at 250ksps - enables battery-operated or thermally constrained designs without active cooling. |
| Digital Gain Compression | Enabled via REF/DGC = GND - maps input range to 0.1×VREF to 0.9×VREF, allowing single 5.5V-supply amplifier drive. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments with full parametric performance over range. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17 = GND, must be soldered to PCB ground plane).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog inputs | Accept ±VREF fully differential signal; input capacitance = 45pF (sample mode); common-mode range = VREF/2 ± 0.1V. |
| REF | Reference voltage input | Accepts 2.5V–5.1V external reference; requires 47µF X5R ceramic decoupling close to pin. |
| REF/DGC | Reference/Digital Gain Compression control | Tied to REF → DGC disabled (full ±VREF range); tied to GND → DGC enabled (0.1–0.9×VREF range). |
| CNV | Convert trigger input | Rising edge initiates conversion and powers up ADC; no external timing circuitry required. |
| BUSY | Conversion status indicator | High during conversion; transitions low when 18-bit result is ready for serial readout. |
| SDO, SCK, RDL/SDI, CHAIN | SPI-compatible serial interface | Supports 1.8V–5V logic levels; daisy-chain mode enabled when CHAIN = high; MSB-first 2's complement output. |
| VDD, OVDD, GND | Analog/digital power and ground | VDD = 2.5V ±62.5mV analog supply; OVDD sets I/O voltage level; multiple GND pins and exposed pad ensure low-noise grounding. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Delivers first valid conversion result immediately after CNV rising edge-no pipeline delay or initialization overhead. |
| Auto power-down | Reduces current to ≤0.9µA between conversions, scaling power with sampling rate (e.g., 3.4µW at 250sps). |
| Digital Gain Compression (DGC) | Eliminates need for negative supply on driving amplifier by digitally remapping full-scale range to 10–90% of VREF. |
| Internal conversion clock | Removes requirement for external timing source-simplifies layout and improves jitter immunity in noise-sensitive systems. |
| Wide reference range | Accepts 2.5V–5.1V reference voltage, enabling optimization of dynamic range and SNR for varying signal amplitudes. |
| Industrial temperature grade | Specified and tested from –40°C to +85°C with full performance guarantees on INL, SNR, THD, and timing parameters. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeters, portable oscilloscopes, and battery-powered sensor analyzers requiring high-resolution DC and low-frequency AC measurements. IC Role / Device Role / Timing Role: Primary high-accuracy ADC digitizing conditioned analog sensor outputs with minimal power consumption. Use Value: 102dB SNR and ±1.75LSB INL enable sub-0.001% measurement accuracy; 3.4mW dissipation extends battery life beyond 24 hours at 250ksps. |
Use Scenario: PLC analog input modules and distributed control systems monitoring pressure, temperature, and flow transmitters in factory environments. IC Role / Device Role / Timing Role: Precision front-end ADC interfacing with isolated signal conditioners and communicating via SPI to microcontroller-based controllers. Use Value: –40°C to +85°C operation ensures reliability in uncontrolled cabinets; DGC simplifies single-supply 24V system design for analog input stages. |
| Medical Imaging Signal Chain | Automated Test Equipment (ATE) |
Use Scenario: Ultrasound beamformer receive paths and MRI gradient monitoring where low distortion and high SNR are critical for image fidelity. IC Role / Device Role / Timing Role: High-linearity digitizer capturing low-amplitude, wide-dynamic-range analog signals from low-noise amplifiers. Use Value: –126dB THD preserves harmonic integrity; fully differential input rejects common-mode noise from high-voltage switching circuits. |
Use Scenario: Modular ATE digitizer cards performing fast, repeatable parametric testing of ICs and passive components. IC Role / Device Role / Timing Role: High-throughput ADC providing deterministic 4µs conversion cycle time with no latency for synchronized multi-channel sampling. Use Value: Daisy-chain SPI mode allows stacking multiple LTC2376IDE-18#PBF units on one bus-reducing FPGA I/O count and board space in dense test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7986BCPZ-RL7 | 18-bit, 1MSPS, 12.5mW at full speed; requires external reference; no DGC; SPI-only (no daisy-chain). | Better throughput but higher power; lacks DGC and daisy-chain-less suitable for low-power multi-ADC systems. | Select when maximum sampling rate >250ksps is required and system can accommodate higher power and external ref design. |
| ADS8860IDRCT | 16-bit, 1MSPS, 3.3V supply only; no DGC; internal reference option; SPI with daisy-chain support. | Lower resolution (16-bit), no DGC, but lower cost and smaller 3mm × 3mm WSON package. | Select for cost-sensitive, space-constrained applications where 16-bit resolution suffices and single-supply drive is not required. |
Compared with AD7986BCPZ-RL7 and ADS8860IDRCT, the LTC2376IDE-18#PBF uniquely balances ultra-low power (3.4mW), integrated DGC for simplified analog front-end design, and daisy-chain capability-making it optimal for industrial and portable systems demanding 18-bit fidelity with thermal and layout efficiency.
Availability
LTC2376IDE-18#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and automated test equipment requiring stable component supply, long-term manufacturability, and guaranteed industrial temperature performance.
Supply support for LTC2376IDE-18#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 LTC2376IDE-18#PBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered for applications demanding uncompromised DC accuracy, low noise, and low power in harsh operating environments.
FAQ
What is the operating temperature range for the LTC2376IDE-18#PBF?
The LTC2376IDE-18#PBF is rated for operation from –40°C to +85°C and is fully specified across this industrial temperature range-including INL, SNR, THD, and timing parameters. This makes the LTC2376IDE-18#PBF suitable for deployment in factory automation, outdoor instrumentation, and other thermally variable environments without derating.
Does the LTC2376IDE-18#PBF require an external clock source?
No, the LTC2376IDE-18#PBF integrates an internal oscillator that controls conversion timing, eliminating the need for an external clock. The tCONV specification (1.9–3µs) is internally generated and guaranteed across temperature and supply voltage, simplifying system timing design and reducing jitter sensitivity in the LTC2376IDE-18#PBF signal chain.
How does Digital Gain Compression (DGC) work in the LTC2376IDE-18#PBF?
In the LTC2376IDE-18#PBF, DGC is activated by pulling the REF/DGC pin to GND. This configures the ADC to map zero-scale code to 0.1×VREF and full-scale code to 0.9×VREF, compressing the usable input range to 0.5V–4.5V (for VREF = 5V). The LTC2376IDE-18#PBF preserves full 18-bit resolution while enabling single-supply amplifier drive-e.g., LT6350 powered from +5.5V only.
What package type does the LTC2376IDE-18#PBF use, and how is thermal performance managed?
The LTC2376IDE-18#PBF uses a 16-lead (4mm × 3mm) plastic DFN package with an exposed thermal pad (Pin 17 = GND). This pad must be soldered directly to the PCB ground plane to achieve θJA = 40°C/W. Proper thermal land design ensures the LTC2376IDE-18#PBF maintains full performance at 3.4mW dissipation even in compact enclosures.
Can multiple LTC2376IDE-18#PBF devices be connected on a single SPI bus?
Yes-the LTC2376IDE-18#PBF supports daisy-chain mode via the CHAIN pin. When CHAIN = high, the RDL/SDI pin becomes a serial data input, allowing up to N devices to share one SPI bus (SCK, SDO, CNV, BUSY) with only one chip select line. This reduces FPGA/GPIO count and simplifies routing in multi-channel data acquisition systems using the LTC2376IDE-18#PBF.
LTC2376IDE-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2376IDE-18#PBF FAQ
1.How can I place an order for LTC2376IDE-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2376IDE-18#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 LTC2376IDE-18#PBF reliable?
The price and inventory of LTC2376IDE-18#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2376IDE-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2376IDE-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2376IDE-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2376IDE-18#PBF?
LTC2376IDE-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2376IDE-18#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 LTC2376IDE-18#PBF?
For technical support, including LTC2376IDE-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2376IDE-18#PBF requirements.
6.How does Aetrix verify that LTC2376IDE-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2376IDE-18#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 LTC2376IDE-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2376IDE-18#PBF?
All LTC2376IDE-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2376IDE-18#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 LTC2376IDE-18#PBF part is unused and in its original packaging.
Return procedure for LTC2376IDE-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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