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Analog Devices Inc. LTC2367IDE-18#PBF
- Part No.:
- LTC2367IDE-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2367IDE-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,274
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Product details
Overview
LTC2367IDE-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit pseudo-differential unipolar successive approximation register (SAR) ADC with 500ksps throughput, 97dB SNR (typ), ±2.5LSB INL (max), and operation from a single 2.5V supply. It supports VREF from 2.5V to 5.1V and delivers no missing codes at full resolution, making it suitable for high-precision data acquisition in portable instrumentation and industrial process control.
For engineers reviewing the LTC2367IDE-18#PBF datasheet, LTC2367IDE-18#PBF pinout, LTC2367IDE-18#PBF application, or LTC2367IDE-18#PBF equivalent, key selection criteria include guaranteed 18-bit no-missing-codes performance, low 6.8mW power at full speed, daisy-chain SPI interface compatibility, and –40°C to +85°C extended temperature operation in the 4mm × 3mm DFN package.
Technical Context
The LTC2367IDE-18#PBF employs a charge-redistribution CDAC architecture with internal conversion clock, eliminating external timing dependencies. Its pseudo-differential input stage accepts 0V to VREF on IN+, with IN– referenced to GND (±100mV range), enabling common-mode noise rejection without requiring true differential signal sources.
Conversion is initiated by a rising edge on CNV; BUSY goes high during conversion and returns low upon completion. The SPI-compatible serial interface operates across 1.8V–5V OVDD logic levels and supports both normal mode (RDL/SDI as bus enable) and daisy-chain mode (RDL/SDI as SDI input when CHAIN = high), enabling multi-ADC synchronization without additional control lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - guarantees monotonic transfer function and no missing codes across full operating temperature range. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with zero pipeline latency. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - supports >15.8 effective bits (ENOB) in high-fidelity measurement systems. |
| INL | ±2.5LSB (max) - ensures absolute accuracy within ±0.00095% of full scale, critical for calibration-grade applications. |
| Power Dissipation | 6.8mW at 500ksps - enables battery-powered operation with thermal budget compatible with compact PCB layouts. |
| VREF Range | 2.5V to 5.1V - allows flexible dynamic range scaling while maintaining 19µV LSB size at 5V reference. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments where ambient temperature swings impact long-term stability. |
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 |
|---|---|---|
| CHAIN (1) | Mode selector | High enables daisy-chain SPI mode; low configures RDL/SDI as bus-enable input - determines serial interface topology. |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply powering core ADC circuitry; requires 10µF ceramic bypass to GND. |
| GND (3,6,10,16) | Ground reference | Four dedicated analog/digital ground pins minimize ground bounce and improve PSRR. |
| IN+ (4) | Positive analog input | Pseudo-differential input with 0V to VREF range; sees 45pF sampling capacitance and 40Ω switch resistance. |
| IN– (5) | Common-mode sense | Ground-referenced input (±100mV range) used for common-mode rejection - must connect to system ground or remote sense point. |
| REF (7,8) | Reference voltage input | Dual-pin connection for 2.5V–5.1V external reference; requires 47µF X5R ceramic decoupling at pin. |
| CNV (9) | Convert trigger | Rising-edge–sensitive input initiating acquisition and conversion; minimum pulse width 20ns. |
| BUSY (11) | Conversion status | Active-high open-drain output indicating conversion in progress; timing-critical for synchronous readout. |
| RDL/SDI (12) | Serial I/O control/data | Function depends on CHAIN state: bus enable (low) or serial data input (high) - enables multi-device chaining. |
| SCK (13) | Serial clock input | Accepts 10ns min period (100MHz max); controls MSB-first data shift timing for SDO output. |
| SDO (14) | Serial data output | 3-state output delivering 18-bit straight-binary result; data valid 9.5ns after SCK↑ (CL = 20pF). |
| OVDD (15) | I/O supply | 1.71V–5.25V digital interface supply - sets logic thresholds for all digital pins and enables mixed-voltage system interfacing. |
| GND (17, EP) | Thermal ground | Exposed pad - mandatory solder connection to PCB ground plane for thermal dissipation (θJA = 40°C/W) and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 18 bits | Guaranteed over full –40°C to +85°C range - eliminates code ambiguity in closed-loop control and metrology systems. |
| Internal conversion clock | Removes need for external timing source - simplifies layout and reduces BOM count in space-constrained designs. |
| Auto power-down between conversions | Reduces current to 0.9µA typical - extends battery life in intermittent-sampling applications like sensor nodes. |
| Daisy-chain SPI mode | Enables synchronized sampling across multiple LTC2367IDE-18#PBF devices using single SCK/SDO line - eliminates inter-device skew. |
| Pseudo-differential input architecture | Rejects common-mode noise without requiring matched differential drivers - lowers system cost vs true differential ADCs. |
Applications
| Medical Imaging Signal Chain | Portable Precision Instrumentation |
|---|---|
Use Scenario: Digitizing low-amplitude analog outputs from ultrasound transducer front-ends or MRI gradient monitoring circuits. IC Role / Device Role / Timing Role: High-resolution SAR ADC capturing transient waveforms with minimal harmonic distortion and jitter-induced noise floor degradation. Use Value: 97dB SNR and –120dB THD preserve weak signal integrity in time-domain analysis, supporting accurate tissue characterization. | Use Scenario: Battery-powered handheld multimeters, insulation testers, or portable oscilloscope front-ends requiring lab-grade accuracy. IC Role / Device Role / Timing Role: Primary digitizer converting conditioned sensor voltages into calibrated digital values with traceable linearity. Use Value: ±2.5LSB INL and guaranteed no-missing-codes ensure measurement repeatability across temperature and time without periodic recalibration. |
| Industrial Process Control Loop | Automated Test Equipment (ATE) |
Use Scenario: Monitoring analog feedback signals from motor drives, pressure transducers, or thermal sensors in PLC-based control cabinets. IC Role / Device Role / Timing Role: High-speed, low-latency ADC providing real-time loop closure data with deterministic 2µs conversion cycle time. Use Value: Zero-cycle latency and 500ksps throughput enable sub-millisecond control updates, improving system responsiveness and stability margins. | Use Scenario: Channel digitization in modular ATE systems performing parametric testing of analog ICs or RF components. IC Role / Device Role / Timing Role: Precision acquisition node synchronized across multiple channels via daisy-chained CNV and SCK signals. Use Value: Daisy-chain capability and identical timing characteristics across units ensure channel-to-channel phase alignment within <1ns jitter. |
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 |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, 1MSPS, 92dB SNR, 3.3V-only OVDD, no daisy-chain mode | Higher speed but lower resolution; lacks extended temperature grade and flexible logic voltage support | Select when 16-bit precision suffices and system uses only 3.3V I/O; avoid if daisy-chain sync or >85°C operation required. |
| AD7960BCPZ-RL7 | 18-bit, 5MSPS, 91dB SNR, requires external reference buffer, 5V analog supply, larger 40-lead LFCSP | Higher throughput but higher power (45mW), more complex reference design, and less thermally efficient package | Select for ultra-high-speed applications where 5MSPS justifies added power, board area, and reference design complexity. |
Compared with ADS8860IDRCT and AD7960BCPZ-RL7, the LTC2367IDE-18#PBF uniquely balances 18-bit integrity, 500ksps speed, ultra-low 6.8mW power, and robust –40°C to +85°C operation in a thermally optimized DFN - making it optimal for portable, battery-sensitive, and industrial embedded systems demanding verified linearity without design overhead.
Availability
LTC2367IDE-18#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable precision instrumentation, and industrial process control requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LTC2367IDE-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 LTC2367IDE-18#PBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered specifically for applications demanding high resolution, low power, and guaranteed monotonicity in harsh thermal environments.
FAQ
What is the maximum sampling rate supported by the LTC2367IDE-18#PBF?
The LTC2367IDE-18#PBF supports a maximum sampling rate of 500ksps across its full operating temperature range (–40°C to +85°C). This rate is guaranteed with no missing codes, ±2.5LSB INL, and 97dB SNR performance when VREF = 5V and fIN = 2kHz. Conversion time is fixed at 1.5µs, and the minimum time between conversions (tCYC) is 2µs.
Does the LTC2367IDE-18#PBF require an external reference voltage?
Yes, the LTC2367IDE-18#PBF requires an external reference voltage applied to the REF pins (7 and 8). The reference must be stable, low-noise, and fall within 2.5V to 5.1V. Recommended references include the LTC6655-5 for high-precision applications. The device draws up to 0.32mA DC current from REF at 500ksps, necessitating proper decoupling with a 47µF X5R ceramic capacitor.
What package type and thermal characteristics does the LTC2367IDE-18#PBF use?
The LTC2367IDE-18#PBF is supplied in a 16-lead (4mm × 3mm) plastic DFN package with an exposed thermal pad (Pin 17). The exposed pad must be soldered directly to the PCB ground plane. Thermal resistance is θJA = 40°C/W, enabling reliable operation at full load in compact enclosures without forced airflow.
Can the LTC2367IDE-18#PBF interface with 1.8V microcontrollers?
Yes, the LTC2367IDE-18#PBF supports 1.8V logic through its OVDD pin (Pin 15), which accepts 1.71V to 5.25V. When OVDD = 1.8V, digital inputs (CNV, CHAIN, SCK, RDL/SDI) recognize VIH ≥ 1.44V and VIL ≤ 0.36V, and SDO output drives VOH ≥ 1.6V and VOL ≤ 0.2V - ensuring robust interoperability with 1.8V FPGA or MCU interfaces.
How does the daisy-chain mode work on the LTC2367IDE-18#PBF?
Daisy-chain mode is enabled by driving CHAIN (Pin 1) high. In this mode, RDL/SDI becomes a serial data input, allowing SDO of a preceding LTC2367IDE-18#PBF to feed RDL/SDI of the next device. All devices share one SCK line, and conversions are synchronized by a common CNV edge - enabling simultaneous sampling and cascaded readout without additional control signals.
LTC2367IDE-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):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-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:
- -
LTC2367IDE-18#PBF FAQ
1.How can I place an order for LTC2367IDE-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2367IDE-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 LTC2367IDE-18#PBF reliable?
The price and inventory of LTC2367IDE-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 LTC2367IDE-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2367IDE-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2367IDE-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2367IDE-18#PBF?
LTC2367IDE-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2367IDE-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 LTC2367IDE-18#PBF?
For technical support, including LTC2367IDE-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2367IDE-18#PBF requirements.
6.How does Aetrix verify that LTC2367IDE-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2367IDE-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 LTC2367IDE-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2367IDE-18#PBF?
All LTC2367IDE-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2367IDE-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 LTC2367IDE-18#PBF part is unused and in its original packaging.
Return procedure for LTC2367IDE-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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