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Analog Devices Inc. LTC2382IDE-16#PBF
- Part No.:
- LTC2382IDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2382IDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,972
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Product details
Overview
LTC2382IDE-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 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 high-speed data acquisition systems.
For engineers reviewing the LTC2382IDE-16#PBF datasheet, LTC2382IDE-16#PBF pinout, LTC2382IDE-16#PBF application, or LTC2382IDE-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation over –40°C to +85°C, extended 1.25µs acquisition time for low-power driver compatibility, SPI-compatible serial interface with daisy-chain mode, and internal conversion clock eliminating external timing constraints.
Technical Context
The LTC2382IDE-16#PBF implements a proprietary sampling architecture that allows acquisition of the next sample during the current conversion cycle, enabling 1.25µs acquisition time and eliminating pipeline delay or cycle latency. Its fully differential input stage features 45pF sampling capacitance and 40Ω switch on-resistance, with 70dB common-mode rejection and ±1µA input leakage across temperature.
Conversion is initiated by a rising edge on CNV; BUSY goes high at start and low upon completion. The internal oscillator sets tCONV = 1–1.5µs and tCYC = 2µs, supporting deterministic 500ksps throughput. Serial output uses MSB-first 2's complement format on SDO, synchronized to SCK edges, with RDL/SDI configurable as bus enable (CHAIN = low) or serial data input (CHAIN = high).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across full operating range. |
| Sampling Rate | 500ksps - fixed maximum throughput with zero cycle latency, enabling real-time control loop closure. |
| INL (Max) | ±2 LSB - ensures end-point linearity error ≤ ±0.003% of FSR, critical for precision measurement accuracy. |
| SNR (Typ) | 92 dB at fIN = 20 kHz - corresponds to effective resolution >15.0 bits, suitable for high-fidelity signal capture. |
| Power (500ksps) | 6.5 mW - achieved with 2.5V VDD and auto power-down between conversions, scaling linearly with sample rate. |
| Input Range | ±2.5 V differential - supports wide dynamic range with external 2.4–2.6V reference, enabling ±10V single-ended inputs via LT6350. |
| Acquisition Time | 1.25 µs - extends hold-phase window, permitting use of ultra-low-power op-amps (e.g., LT6350) without settling errors. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments; H-grade variant supports up to +125°C. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17), RoHS-compliant, moisture sensitivity level 1. Thermal resistance θJA = 43°C/W; exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CHAIN) | Chain Mode Selector | High enables daisy-chain mode (RDL/SDI = SDI); low enables normal mode (RDL/SDI = bus enable). |
| 2 (VDD) | Digital Core Supply | 2.375–2.625V supply for ADC core and logic; bypass with 10µF ceramic capacitor to GND. |
| 3,6,10,16 (GND) | Analog/Digital Ground | Four dedicated ground pins minimize noise coupling; Pin 17 (exposed pad) is additional GND for DFN package. |
| 4,5 (IN+, IN–) | Differential Analog Input | High-impedance inputs with 45pF sampling capacitance; require matched drive for optimal CMRR and THD. |
| 7,8 (REF) | Reference Input | Accepts 2.4–2.6V external reference; draws up to 495µA at 500ksps; bypass with 47µF X5R ceramic capacitor. |
| 9 (CNV) | Convert Trigger | Rising-edge initiates conversion; device powers down automatically while CNV remains high. |
| 11 (BUSY) | Conversion Status | Active-high open-drain indicator; asserts at conversion start, deasserts when result is ready on SDO. |
| 12 (RDL/SDI) | Configurable Serial I/O | Bus enable (CHAIN = low) or serial data input (CHAIN = high); supports multi-device daisy-chaining. |
| 13 (SCK) | Serial Clock Input | Accepts 10ns min period (100MHz max); controls SDO data shift-out timing in both normal and chain modes. |
| 14 (SDO) | Serial Data Output | MSB-first 2's complement output; tri-state when RDL/SDI = low (normal mode) or after chain transmission. |
| 15 (OVDD) | I/O Interface Supply | 1.71–5.25V logic supply; sets VIH/VIL thresholds and drives SDO; bypass with 0.1µF capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 16-bit resolution | Guaranteed over –40°C to +85°C, ensuring monotonicity and eliminating code ambiguities in closed-loop control. |
| Extended 1.25µs acquisition time | Enables use of low-power, low-bandwidth drivers (e.g., LT6350) without sacrificing settling accuracy or SNR. |
| SPI-compatible serial interface with daisy-chain mode | Reduces host GPIO count and simplifies multi-channel synchronization; eliminates need for external glue logic. |
| Internal conversion clock | Removes dependency on external clock source, simplifying layout and reducing jitter-sensitive timing paths. |
| Auto power-down between conversions | Reduces idle power to 13µW at 1ksps, enabling battery-operated instrumentation with extended runtime. |
| Guaranteed operation to 125°C (H-grade variants) | Validated performance across extended temperature range supports harsh industrial and automotive under-hood applications. |
Applications
| Medical Imaging Signal Chain | Industrial Process Control |
|---|---|
|
Use Scenario: Digitizing low-noise sensor outputs (e.g., CT detector arrays, ultrasound beamformers) requiring high dynamic range and minimal harmonic distortion. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 500ksps differential signals with 92dB SNR and ±2LSB INL to preserve diagnostic image fidelity. Use Value: Extended 1.25µs acquisition time allows integration with low-power, low-distortion drivers like LT6350, reducing system thermal load and power supply complexity. |
Use Scenario: High-precision monitoring of pressure, temperature, and flow sensors in PLC I/O modules operating in factory-floor environments. IC Role / Device Role / Timing Role: Industrial-grade ADC providing guaranteed 16-bit no-missing-codes operation from –40°C to +85°C with robust ESD-protected inputs. Use Value: Fully differential ±2.5V input range rejects common-mode noise from motor drives and switching power supplies, improving measurement stability. |
| Portable Test Equipment | Automated Test Equipment (ATE) |
|
Use Scenario: Battery-powered oscilloscopes and spectrum analyzers needing high-resolution sampling with minimal power draw. IC Role / Device Role / Timing Role: Low-power 16-bit ADC consuming only 6.5mW at 500ksps and scaling to 13µW at 1ksps during idle periods. Use Value: Internal oscillator and auto power-down eliminate external clock circuitry and reduce standby current, extending battery life. |
Use Scenario: Multi-channel parametric test systems requiring synchronized sampling across dozens of channels with deterministic latency. IC Role / Device Role / Timing Role: SPI-compatible ADC with daisy-chain mode enabling precise inter-device timing alignment using shared SCK and CNV. Use Value: Zero cycle latency and 2µs conversion cycle ensure predictable timing margins for high-throughput production testing. |
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; requires external reference and clock; higher power (34mW at 5MSPS). | Better resolution and speed but demands more complex support circuitry and higher power budget. | Select AD7960BCPZ-RL7 only when 18-bit resolution and ≥1MSPS throughput are mandatory; LTC2382IDE-16#PBF offers superior power efficiency per bit at 500ksps. |
| ADS8860IDRCT | 16-bit, 1MSPS, single-supply 2.5–5V; SPI interface; no daisy-chain mode; typical SNR = 91.5dB. | Lacks extended acquisition time and guaranteed no-missing-codes spec; lower temperature grade (–40°C to +85°C same, but no H-grade option). | Choose ADS8860IDRCT for cost-sensitive, space-constrained designs where daisy-chain and 1.25µs acquisition are not required. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2382IDE-16#PBF uniquely balances 16-bit precision, 500ksps throughput, ultra-low 6.5mW power, and integrated daisy-chain capability-making it optimal for portable, multi-channel, and thermally constrained industrial systems.
Availability
LTC2382IDE-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process control modules, and portable test equipment requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for LTC2382IDE-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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets.
The LTC2382IDE-16#PBF belongs to Linear's precision SAR ADC product line, designed specifically for applications demanding high resolution, low power, and deterministic timing in harsh environments-emphasizing ease of use through integrated clocks and flexible I/O voltage support.
FAQ
What is the guaranteed operating temperature range for the LTC2382IDE-16#PBF?
The LTC2382IDE-16#PBF is specified for operation from –40°C to +85°C. This industrial temperature grade is validated across all key AC and DC specifications including INL, SNR, and power consumption. The "I" suffix in the part number explicitly denotes this temperature range, distinct from the commercial (C) and high-reliability (H) grades.
Does the LTC2382IDE-16#PBF require an external clock source?
No, the LTC2382IDE-16#PBF includes an internal oscillator that sets conversion timing, eliminating the need for an external clock. This simplifies system design by removing jitter-sensitive clock distribution paths and reducing component count. External SCK is used only for serial data transfer timing-not for conversion control.
How does the daisy-chain mode work on the LTC2382IDE-16#PBF?
Daisy-chain mode is enabled by driving CHAIN (Pin 1) high. In this mode, RDL/SDI becomes a serial data input, allowing multiple LTC2382IDE-16#PBF devices to share one SCK and CNV line. Conversion results cascade from device to device on SDO, enabling synchronized multi-channel sampling with minimal host interface overhead.
What reference voltage is recommended for optimal performance of the LTC2382IDE-16#PBF?
The LTC6652-2.5 is the recommended reference for the LTC2382IDE-16#PBF, offering 0.05% initial accuracy and 5ppm/°C max drift-matching the ADC's precision requirements. It is bypassed with a 47µF X5R ceramic capacitor at the REF pin, and all published performance data (e.g., 92dB SNR) was measured using this reference.
Can the LTC2382IDE-16#PBF interface directly with a 1.8V microcontroller?
Yes-the LTC2382IDE-16#PBF supports 1.8V logic levels via its independent OVDD supply pin (Pin 15). When OVDD = 1.8V, VIH = 1.44V min and VIL = 0.36V max, ensuring reliable communication with 1.8V MCUs without level-shifting circuitry. VDD remains at 2.5V for core ADC operation.
LTC2382IDE-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2382IDE-16#PBF FAQ
1.How can I place an order for LTC2382IDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2382IDE-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 LTC2382IDE-16#PBF reliable?
The price and inventory of LTC2382IDE-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 LTC2382IDE-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2382IDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2382IDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2382IDE-16#PBF?
LTC2382IDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2382IDE-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 LTC2382IDE-16#PBF?
For technical support, including LTC2382IDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2382IDE-16#PBF requirements.
6.How does Aetrix verify that LTC2382IDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2382IDE-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 LTC2382IDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2382IDE-16#PBF?
All LTC2382IDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2382IDE-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 LTC2382IDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2382IDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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