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Analog Devices Inc. LTC2382CDE-16#TRPBF
- Part No.:
- LTC2382CDE-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2382CDE-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
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Product details
Overview
LTC2382CDE-16#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with fully differential ±2.5V input range, 92dB SNR at 20kHz, ±2LSB INL max, and 6.5mW power consumption at full throughput. It operates from a single 2.5V VDD supply and supports 1.8V–5V I/O logic via separate OVDD, enabling direct interfacing with diverse host processors in portable instrumentation and industrial data acquisition systems.
For engineers reviewing the LTC2382CDE-16#TRPBF datasheet, LTC2382CDE-16#TRPBF pinout, LTC2382CDE-16#TRPBF application, or LTC2382CDE-16#TRPBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, extended 1.25µs acquisition time for low-power driver compatibility, internal conversion clock eliminating external timing constraints, and daisy-chain SPI mode for multi-ADC synchronization.
Technical Context
The LTC2382CDE-16#TRPBF implements a proprietary sampling architecture that allows acquisition of the next sample during the current conversion cycle, enabling a 1.25µs acquisition window while maintaining 500ksps throughput and zero cycle latency. Its fully differential SAR core uses a 16-bit CDAC and high-precision comparator referenced to an external 2.5V source, delivering 76µV LSB resolution and bipolar 2's complement output coding.
Conversion is initiated by a rising edge on CNV; BUSY asserts high during conversion and returns low upon completion. The SPI-compatible serial interface supports MSB-first 2's complement data transfer via SDO, with RDL/SDI functioning as bus enable (CHAIN = low) or daisy-chain input (CHAIN = high), and SCK tolerating up to 100MHz clock rates with 10ns minimum period.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full 65,536-level quantization with no missing codes across temperature. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth without undersampling. |
| SNR | 92dB (typ) at fIN = 20kHz - ensures >15-bit effective resolution for precision measurement applications. |
| INL | ±2LSB (max) - limits integral nonlinearity error to ≤±0.003% of full-scale, critical for calibration-sensitive systems. |
| Power Dissipation | 6.5mW at 500ksps - reduces thermal load and extends battery life in portable instrumentation. |
| Acquisition Time | 1.25µs - permits use of ultra-low-power op-amps (e.g., LT6350) with minimal settling burden. |
| Input Range | ±2.5V fully differential - supports high dynamic range signal conditioning without gain stages. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CHAIN) | Chain Mode Selector | High enables daisy-chain SPI mode (RDL/SDI becomes SDI); low enables normal bus-enable mode. |
| 2 (VDD) | Digital Core Supply | 2.375V–2.625V supply for ADC logic and CDAC; bypass with 10µF ceramic capacitor. |
| 4,5 (IN+, IN–) | Differential Analog Inputs | Accept ±2.5V differential signal; 45pF input capacitance in sample mode requires low-Z drive. |
| 7,8 (REF) | Reference Input | 2.4V–2.6V external reference; draws up to 495µA at 500ksps; bypass with 47µF X5R capacitor. |
| 9 (CNV) | Convert Trigger | Rising edge initiates conversion; high state enables auto power-down between conversions. |
| 11 (BUSY) | Conversion Status | Active-high open-drain indicator; asserts during conversion, releases when result ready. |
| 12 (RDL/SDI) | Serial Data Control/Input | Bus enable (CHAIN = low) or daisy-chain data input (CHAIN = high); 5V-tolerant with OVDD. |
| 13 (SCK) | Serial Clock Input | Accepts 1.8V–5V logic; 10ns min period supports up to 100MHz clock for high-speed readout. |
| 14 (SDO) | Serial Data Output | 2's complement 16-bit result; MSB-first, tri-stateable, driven by OVDD voltage domain. |
| 15 (OVDD) | I/O Interface Supply | 1.71V–5.25V supply for digital I/O; sets VIH/VIL thresholds and drives SDO/RDL/SDI levels. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Enables deterministic real-time control loops without output phase shift or buffering overhead. |
| Internal conversion oscillator | Eliminates need for external clock source or timing circuitry-reduces BOM count and layout complexity. |
| Auto power-down between conversions | Reduces idle power to 13µW at 1ksps, scaling linearly with sampling rate for optimal energy efficiency. |
| SPI-compatible daisy-chain mode | Allows synchronous sampling of multiple LTC2382CDE-16#TRPBF devices using single SCK/SCK chain. |
| Guaranteed operation to 125°C (H-grade variants) | Validated thermal robustness supports deployment in harsh environments like motor control and downhole tools. |
Applications
| Medical Imaging Signal Chain | Portable High-Speed DAQ |
|---|---|
Use Scenario: Digitizing ultrasound echo return signals with wide dynamic range and low distortion. IC Role / Device Role / Timing Role: Primary 16-bit SAR ADC capturing baseband RF echoes at 500ksps with precise timing alignment. Use Value: 92dB SNR and ±2LSB INL preserve weak signal fidelity; 1.25µs acquisition enables low-noise, low-power front-end amplifiers. |
Use Scenario: Battery-powered oscilloscope or spectrum analyzer requiring high-resolution waveform capture. IC Role / Device Role / Timing Role: Core ADC in handheld test equipment, synchronized via CNV trigger for single-shot or repetitive acquisition. Use Value: 6.5mW power at full speed extends runtime; daisy-chain mode supports multi-channel expansion without added controllers. |
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
Use Scenario: Continuous monitoring of sensor outputs (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision ADC in isolated analog front-end, interfacing to microcontroller via SPI with configurable OVDD. Use Value: ±2.5V differential input rejects common-mode noise in electrically noisy factory environments; no missing codes ensures traceability. |
Use Scenario: High-throughput parametric testing of ICs requiring fast, accurate DC and AC measurements. IC Role / Device Role / Timing Role: High-speed digitizer in ATE pin electronics, triggered externally and read out over high-frequency SPI. Use Value: 500ksps throughput meets production test cycle time targets; internal oscillator simplifies system clock tree design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit, 5Msps, 1.8V/5V dual-supply, no internal oscillator, requires external clock. | Higher resolution and speed but consumes 39mW; lacks auto power-down and extended acquisition time. | Select when >16-bit resolution and >500ksps are mandatory; accept higher power and external timing complexity. |
| ADS8860IRGET | 16-bit, 1MSPS, 2.5V single-supply, SPI interface, 1.5µs acquisition, 11.5mW at 1MSPS. | Higher speed but lower SNR (90.5dB), no daisy-chain mode, and narrower input range (±2.048V). | Select for cost-sensitive, single-supply systems needing >500ksps where 92dB SNR and daisy-chain are not required. |
Compared with AD7960BCPZ-RL7 and ADS8860IRGET, the LTC2382CDE-16#TRPBF uniquely balances 500ksps throughput, 92dB SNR, ultra-low 6.5mW power, and integrated timing-making it optimal for portable, thermally constrained, or multi-ADC synchronized designs where precision and efficiency coexist.
Availability
LTC2382CDE-16#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable high-speed data acquisition, and industrial process monitoring requiring stable component supply, long-term manufacturability, and guaranteed 0°C to 70°C operation.
Supply support for LTC2382CDE-16#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2382-16 product line was designed for high-accuracy, low-power, high-speed data acquisition in space-constrained and thermally sensitive applications-emphasizing ease of use through integrated timing, flexible I/O, and robust dc/ac performance.
FAQ
What is the operating temperature range for the LTC2382CDE-16#TRPBF?
The LTC2382CDE-16#TRPBF is specified for 0°C to 70°C ambient operation. This commercial-grade variant uses the 4mm × 3mm DFN package with exposed pad, and all electrical specifications-including ±2LSB INL max, 92dB SNR, and 6.5mW power-are guaranteed across this range. For extended temperature operation, consider the LTC2382HDE-16#TRPBF (–40°C to 125°C).
Does the LTC2382CDE-16#TRPBF require an external clock source?
No, the LTC2382CDE-16#TRPBF features an internal oscillator that sets conversion timing, eliminating the need for an external clock. This simplifies system design and reduces component count. The CNV pin serves solely as a start-of-conversion trigger; timing parameters such as tCONV (1–1.5µs) and tCYC (2µs) are internally generated and guaranteed across temperature and supply voltage.
How does the daisy-chain mode work on the LTC2382CDE-16#TRPBF?
In daisy-chain mode (CHAIN = high), the RDL/SDI pin functions as serial data input, allowing multiple LTC2382CDE-16#TRPBF devices to share one SCK and SDO line. The first device's SDO connects to the second device's RDL/SDI, and so on. Each device shifts its 16-bit result on SDO during its allocated SCK cycles, enabling synchronized sampling and compact multi-channel readout without additional GPIOs.
What reference voltage is recommended for the LTC2382CDE-16#TRPBF?
The LTC2382CDE-16#TRPBF requires a stable 2.5V external reference applied to REF pins (7 and 8). The LTC6652-2.5 is explicitly recommended: it delivers 0.05% initial accuracy, 5ppm/°C drift, and is validated to maintain <0.5LSB deviation across code span at 500ksps. A 47µF X5R ceramic capacitor must be placed directly at the REF pin for transient stability during high-speed conversion bursts.
Can the LTC2382CDE-16#TRPBF interface directly with a 1.8V microcontroller?
Yes. The LTC2382CDE-16#TRPBF supports 1.8V–5V logic levels via its OVDD pin (Pin 15). When OVDD = 1.8V, VIH = 1.44V (min) and VIL = 0.36V (max), ensuring reliable communication with 1.8V microcontrollers. SDO output is driven from OVDD, and RDL/SDI accepts 1.8V logic-no level-shifting circuitry is needed for direct connection.
LTC2382CDE-16#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2382CDE-16#TRPBF FAQ
1.How can I place an order for LTC2382CDE-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2382CDE-16#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 LTC2382CDE-16#TRPBF reliable?
The price and inventory of LTC2382CDE-16#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2382CDE-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2382CDE-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2382CDE-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2382CDE-16#TRPBF?
LTC2382CDE-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2382CDE-16#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 LTC2382CDE-16#TRPBF?
For technical support, including LTC2382CDE-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2382CDE-16#TRPBF requirements.
6.How does Aetrix verify that LTC2382CDE-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2382CDE-16#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 LTC2382CDE-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2382CDE-16#TRPBF?
All LTC2382CDE-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2382CDE-16#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 LTC2382CDE-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2382CDE-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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