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Analog Devices Inc. LTC2382CDE-16#PBF
- Part No.:
- LTC2382CDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2382CDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,218
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Product details
Overview
LTC2382CDE-16#PBF 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 no missing codes. It operates from a single 2.5V supply, consumes 6.5mW at full speed, and targets high-speed data acquisition in medical imaging and portable instrumentation.
For engineers reviewing the LTC2382CDE-16#PBF datasheet, LTC2382CDE-16#PBF pinout, LTC2382CDE-16#PBF application, or LTC2382CDE-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, extended 1.25µs acquisition time enabling low-power ADC drivers, SPI-compatible serial interface with daisy-chain mode, internal conversion clock, and 4mm × 3mm DFN package rated for 0°C to 70°C.
Technical Context
The LTC2382CDE-16#PBF implements a proprietary sampling architecture that allows acquisition of the next sample during the current conversion cycle, eliminating pipeline delay and achieving zero cycle latency. Its internal oscillator fixes conversion time at 1–1.5µs, removing external clocking complexity.
It features a high-impedance, fully differential analog front-end with 45pF input capacitance in sample mode and 5pF in hold mode, ±2.5V input range referenced to an external 2.5V reference, and 1.8V–5V I/O voltage support via dedicated OVDD supply. The device powers down automatically between conversions, scaling quiescent current from 0.5µA (idle) to 3.3mA (500ksps).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full 65,536-level quantization without missing codes across temperature. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth. |
| SNR | 92dB (typ) at fIN = 20kHz - supports >15 effective bits (ENOB ≈ 15.0) in narrowband applications. |
| INL | ±2LSB (max) - ensures monotonicity and <0.003% full-scale linearity error over temperature. |
| Acquisition Time | 1.25µs - permits use of ultra-low-power op-amp drivers (e.g., LT6350) with relaxed settling requirements. |
| Power Dissipation | 6.5mW at 500ksps - achieves 13µW at 1ksps, ideal for battery-operated systems with variable throughput. |
| Reference Input | 2.5V external reference (2.4V–2.6V range) - requires low-noise, low-drift source (e.g., LTC6652-2.5) for full performance. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17), RoHS-compliant, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog inputs | Accept ±2.5V fully differential signal; 45pF input capacitance in sample mode demands careful driver selection. |
| REF (Pins 7, 8) | External reference input | Defines full-scale range; draws up to 495µA DC load at 500ksps; requires 47µF X5R ceramic bypass capacitor. |
| VDD (Pin 2) | Digital core supply | 2.5V ±62.5mV supply; must be decoupled with 10µF ceramic capacitor to GND. |
| OVDD (Pin 15) | I/O interface supply | 1.71V–5.25V logic supply; sets voltage levels for SDO, SCK, RDL/SDI, BUSY; bypass with 0.1µF capacitor. |
| CNV (Pin 9) | Convert trigger input | Rising-edge initiates conversion; device auto-powers-down while CNV remains high. |
| BUSY (Pin 11) | Conversion status indicator | Active-high open-drain output; asserts high at conversion start, deasserts on completion. |
| SDO (Pin 14) | Serial data output | 2's complement 16-bit result shifted MSB-first on SCK rising edge; tri-state controlled by RDL/SDI or CHAIN pin. |
| SCK (Pin 13) | Serial clock input | Supports up to 100MHz clock rate; timing validated across 1.71V–5.25V OVDD range. |
| RDL/SDI (Pin 12) | Bus enable / serial data input | Function depends on CHAIN pin state: enables SDO in Normal Mode; serves as SDI in Daisy-Chain Mode. |
| CHAIN (Pin 1) | Mode selector | High = Daisy-Chain Mode (RDL/SDI becomes SDI); Low = Normal Mode (RDL/SDI enables SDO bus). |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay, zero cycle latency | Enables deterministic real-time control loops without output code buffering or timing uncertainty. |
| Extended 1.25µs acquisition window | Reduces required op-amp slew rate and bandwidth, allowing use of lower-power, lower-cost ADC drivers. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate-13µW at 1ksps extends battery life in intermittent-sampling systems. |
| SPI-compatible interface with daisy-chain mode | Supports multi-ADC synchronization and compact PCB layout with shared SCK/MISO/MOSI lines. |
| Guaranteed operation to 125°C (H-grade variants) | Validates thermal robustness for industrial and automotive environments; C-grade (LTC2382CDE-16#PBF) specified 0°C–70°C. |
Applications
| Medical Imaging Signal Digitization | Portable High-Speed Data Logger |
|---|---|
Use Scenario: Digitizing ultrasound echo return signals or MRI gradient coil feedback in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 500ksps differential sensor outputs with 16-bit precision and minimal latency. Use Value: 92dB SNR and ±2LSB INL preserve weak signal fidelity; 6.5mW power enables all-day battery operation in Class II medical devices. |
Use Scenario: Recording vibration, temperature, and pressure waveforms in field-deployable environmental monitors. IC Role / Device Role / Timing Role: High-fidelity analog front-end digitizer interfacing with low-power microcontrollers via SPI. Use Value: Extended 1.25µs acquisition time allows use of rail-to-rail op-amps powered from same 3.3V rail, reducing BOM count and board area. |
| Industrial Process Control Loop Sampling | Automated Test Equipment (ATE) Channel |
Use Scenario: Closed-loop monitoring of motor current, position, and thermal sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Precision ADC providing deterministic 2µs conversion cycle for real-time PID execution. Use Value: Zero cycle latency and no missing codes ensure reliable fault detection and control stability under transient load conditions. |
Use Scenario: Multi-channel waveform capture in benchtop ATE systems requiring synchronized sampling across 8+ channels. IC Role / Device Role / Timing Role: One of multiple daisy-chained LTC2382CDE-16#PBF units sharing a single SCK line for time-aligned acquisitions. Use Value: Daisy-chain mode eliminates per-channel GPIO overhead and simplifies FPGA firmware for parallel data aggregation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7616BSTZ | 2-channel simultaneous sampling, 16-bit, 1Msps, internal reference, parallel + SPI interface; larger 64-lead LQFP package. | Requires PCB redesign for dual-channel sync and higher power (25mW); better suited for multi-sensor correlation tasks. | Select when simultaneous dual-channel acquisition and integrated reference simplify system design, accepting higher cost and footprint. |
| ADS8860IDRCT | 16-bit, 1MSPS, pseudo-differential input, 1.8V supply only, no daisy-chain mode, 10-pin VSSOP package. | Lacks fully differential input and extended acquisition time; unsuitable for low-distortion ±2.5V signal chains. | Choose only for space-constrained, single-ended, low-voltage systems where 1.25µs acquisition and ±2.5V range are not required. |
Compared with AD7616BSTZ and ADS8860IDRCT, the LTC2382CDE-16#PBF uniquely balances 500ksps throughput, true differential input, zero-latency operation, and ultra-low 6.5mW power in a compact DFN-making it optimal for portable, battery-powered, and thermally constrained 16-bit acquisition nodes.
Availability
LTC2382CDE-16#PBF is available at Aetrix Electronics and suitable for medical imaging, portable instrumentation, and industrial process control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for LTC2382CDE-16#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 high-performance precision analog portfolio, including data converters, references, and signal conditioning ICs.
The LTC2382-16 family was designed for high-speed, low-power, high-accuracy data acquisition in space-, power-, and thermal-constrained systems-emphasizing zero-latency SAR architecture, extended acquisition time, and flexible digital interfacing.
FAQ
What is the maximum sampling rate of the LTC2382CDE-16#PBF?
The LTC2382CDE-16#PBF achieves a guaranteed maximum sampling rate of 500ksps across its full operating temperature range (0°C to 70°C). This rate is supported by its internal oscillator and fixed 1–1.5µs conversion time, with no pipeline delay or cycle latency affecting throughput determinism. At this rate, the LTC2382CDE-16#PBF consumes 6.5mW and delivers 92dB SNR at 20kHz input frequency.
Does the LTC2382CDE-16#PBF require an external reference voltage?
Yes, the LTC2382CDE-16#PBF requires an external 2.5V reference applied to its REF pins (7 and 8). The device accepts 2.4V–2.6V and draws up to 495µA DC current at 500ksps. For full datasheet performance-including 92dB SNR and ±2LSB INL-the LTC6652-2.5 low-noise reference is recommended, bypassed with a 47µF X5R ceramic capacitor placed adjacent to the REF pins.
How does the daisy-chain mode work on the LTC2382CDE-16#PBF?
Daisy-chain mode is enabled by driving the CHAIN pin (Pin 1) high. In this mode, the RDL/SDI pin (Pin 12) functions as serial data input (SDI), allowing cascaded SDO-to-SDI connections across multiple LTC2382CDE-16#PBF units. A single SCK line clocks all devices, and conversion results shift out sequentially-enabling synchronized multi-channel acquisition without additional GPIO or timing complexity.
What is the significance of the 1.25µs acquisition time in the LTC2382CDE-16#PBF?
The 1.25µs acquisition time in the LTC2382CDE-16#PBF is an extended window during which the internal sampling capacitor settles-enabled by its proprietary architecture that overlaps acquisition with conversion. This relaxes op-amp slew rate and bandwidth requirements, permitting use of lower-power, lower-cost drivers like the LT6350 while maintaining full 16-bit accuracy and 92dB SNR performance.
Is the LTC2382CDE-16#PBF pin-compatible with other members of the LTC2382-16 family?
Yes, the LTC2382CDE-16#PBF shares identical pinout and footprint with all LTC2382-16 DFN variants (e.g., LTC2382IDE-16#PBF, LTC2382HDE-16#PBF), differing only in temperature grade and part marking. All DFN versions use the same 16-lead (4mm × 3mm) package with exposed GND pad (Pin 17), enabling drop-in replacement across commercial (C), industrial (I), and high-temp (H) grades without PCB modification.
LTC2382CDE-16#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:
- 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#PBF FAQ
1.How can I place an order for LTC2382CDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2382CDE-16#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 LTC2382CDE-16#PBF reliable?
The price and inventory of LTC2382CDE-16#PBF 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#PBF is usually 5 days.
3.What payment methods are accepted for LTC2382CDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2382CDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2382CDE-16#PBF?
LTC2382CDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2382CDE-16#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 LTC2382CDE-16#PBF?
For technical support, including LTC2382CDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2382CDE-16#PBF requirements.
6.How does Aetrix verify that LTC2382CDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2382CDE-16#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 LTC2382CDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2382CDE-16#PBF?
All LTC2382CDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2382CDE-16#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 LTC2382CDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2382CDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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