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Analog Devices Inc. LTC2367CDE-18#TRPBF
- Part No.:
- LTC2367CDE-18#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2367CDE-18#TRPBF.pdf
- Description:
- IC ADC 18BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
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Product details
Overview
LTC2367CDE-18#TRPBF from Analog Devices (formerly Linear Technology) is an 18-bit pseudo-differential unipolar successive approximation register (SAR) ADC with 500ksps throughput, 97dB typical SNR at 2kHz, ±2.5LSB max INL, and guaranteed no missing codes. It operates from a single 2.5V supply, accepts 2.5V–5.1V external reference, and targets high-precision data acquisition in medical imaging and portable instrumentation.
For engineers reviewing the LTC2367CDE-18#TRPBF datasheet, LTC2367CDE-18#TRPBF pinout, LTC2367CDE-18#TRPBF application, or LTC2367CDE-18#TRPBF equivalent, key selection considerations include its 16-pin 4mm × 3mm DFN package, SPI-compatible serial interface with daisy-chain mode, internal conversion clock, and guaranteed operation from 0°C to 70°C.
Technical Context
The LTC2367CDE-18#TRPBF uses a charge redistribution capacitor DAC (CDAC) architecture with pseudo-differential sampling, where IN+ accepts 0V to VREF and IN– is biased near GND (±100mV range). Conversion is initiated by a rising edge on CNV, with no pipeline delay and fixed 1.5µs conversion time set by an internal oscillator.
Its SPI-compatible serial interface supports 1.8V–5V I/O logic via OVDD, includes BUSY indicator and RDL/SDI dual-function pin for normal/chain modes, and delivers straight-binary 18-bit output MSB-first. Power scales with sampling rate: 6.8mW at 500ksps, 6.8µW at 500sps, with automatic power-down between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 discrete output levels for high dynamic range digitization |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth |
| SNR | 97dB typ at fIN = 2kHz, VREF = 5V - supports >15.8 effective bits (ENOB) in low-noise applications |
| INL | ±2.5LSB max - ensures monotonicity and accurate full-scale linearity across temperature |
| Power Consumption | 6.8mW at 500ksps - enables battery-operated designs without thermal derating in DFN package |
| Reference Range | 2.5V to 5.1V - allows flexible scaling of input range while maintaining LSB size from 9.5µV to 19.5µV |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade embedded systems and test equipment |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17), RoHS-compliant, moisture sensitivity level 3. Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects daisy-chain (high) or normal bus-enable (low) operation; referenced to OVDD |
| VDD (2) | Analog supply | 2.5V ±62.5mV main supply; bypass with 10µF ceramic capacitor to GND |
| GND (3,6,10,16) | Analog/digital ground | Four dedicated ground pins minimize noise coupling; exposed pad (17) is additional GND |
| IN+ (4) | Pseudo-differential analog input | Accepts 0V to VREF signal; 45pF input capacitance during acquisition |
| IN– (5) | Common-mode sense input | Biased near GND (±100mV); rejects common-mode noise but not true differential |
| REF (7,8) | Reference voltage inputs | Dual-pinned for low-inductance connection; requires 47µF X5R ceramic decoupling |
| CNV (9) | Convert trigger | Rising-edge initiates acquisition/conversion; no minimum low time required beyond 20ns |
| BUSY (11) | Conversion status indicator | Active-high open-drain output; asserts for 1.5µs, synchronized to internal clock |
| RDL/SDI (12) | Serial interface control/data input | In normal mode: bus enable; in chain mode: serial data input (MSB-first) |
| SCK (13) | Serial clock input | Supports up to 100MHz SCK (10ns period); timing referenced to OVDD logic levels |
| SDO (14) | Serial data output | Push-pull output delivering 18-bit straight-binary code MSB-first on SCK rising edges |
| OVDD (15) | I/O supply | 1.71V–5.25V digital interface supply; sets VIH/VIL thresholds and drives SDO/BUSY |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 18 bits | Guaranteed monotonic transfer function across full temperature range (0°C to 70°C) |
| Internal conversion clock | Eliminates need for external timing circuitry; ensures consistent 1.5µs conversion time |
| Flexible I/O voltage (1.8V–5V) | Enables direct interfacing with mixed-voltage systems without level shifters |
| Daisy-chain mode | Allows cascading multiple LTC2367 devices on single SPI bus, reducing GPIO count |
| Auto power-down | Reduces current to 0.9µA typical between conversions, scaling linearly with sample rate |
Applications
| Medical Imaging Signal Chain | Portable High-Speed DAQ |
|---|---|
Use Scenario: Digitizing low-amplitude ultrasound echo signals with minimal added noise in handheld scanners. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 500ksps RF envelope data with 97dB SNR to preserve tissue contrast resolution. Use Value: Enables 15.8-bit ENOB performance without external amplification, reducing system BOM and board area. |
Use Scenario: Battery-powered vibration analyzer acquiring accelerometer waveforms in field maintenance tools. IC Role / Device Role / Timing Role: Low-power 18-bit ADC sampling at 500ksps with auto power-down between bursts to extend runtime. Use Value: 6.8mW active power and 0.9µA shutdown current allow >10-hour operation on 2000mAh Li-ion cell. |
| Industrial Process Monitoring | ATE Front-End Digitizer |
Use Scenario: High-accuracy pressure/temperature sensor readout in PLC analog input modules. IC Role / Device Role / Timing Role: Precision unipolar ADC accepting 0–5V sensor outputs with ±2.5LSB INL for <0.01% total error. Use Value: Eliminates calibration drift over 0°C–70°C operating range due to guaranteed linearity specs. |
Use Scenario: Automated test equipment capturing transient waveforms from DUTs during functional validation. IC Role / Device Role / Timing Role: Zero-latency SAR ADC providing deterministic 2µs cycle time for precise timing-critical measurements. Use Value: No pipeline delay ensures immediate response to trigger events, critical for glitch detection and parametric testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7986BCPZ-RL7 | 18-bit, 1MSPS, 10.5mW, SPI interface, 10-lead LFCSP; no daisy-chain mode; requires external reference | Higher speed but larger package and higher power; lacks integrated chain capability for multi-channel sync | Choose when maximum throughput >500ksps is required and board space permits larger footprint |
| ADS8860IDRCT | 16-bit, 1MSPS, 5.5mW, SPI interface, 10-lead VSSOP; ±0.5LSB INL; 2.5V–5V ref range | 2-bit lower resolution; superior INL but lower SNR (92dB); smaller package but no daisy-chain support | Choose for cost-sensitive, space-constrained applications where 16-bit resolution suffices and chain mode is unused |
Compared with AD7986BCPZ-RL7 and ADS8860IDRCT, the LTC2367CDE-18#TRPBF uniquely balances 18-bit precision, 500ksps throughput, ultra-low 6.8mW power, and hardware daisy-chain support in a compact 4mm × 3mm DFN-making it optimal for multi-channel, battery-aware, high-fidelity acquisition systems.
Availability
LTC2367CDE-18#TRPBF is available at Aetrix Electronics and suitable for medical imaging systems, portable instrumentation, industrial process monitoring, and automated test equipment requiring stable component supply and long-term production continuity.
Supply support for LTC2367CDE-18#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2367CDE-18#TRPBF belongs to ADI's precision SAR ADC product line, engineered for applications demanding high resolution, low power, and deterministic timing-especially in portable, medical, and industrial data acquisition systems.
FAQ
What is the maximum sampling frequency supported by the LTC2367CDE-18#TRPBF?
The LTC2367CDE-18#TRPBF supports a maximum sampling frequency of 500ksps, with guaranteed timing performance across its 0°C to 70°C operating range. At this rate, conversion time is fixed at 1.5µs, acquisition time is 1.46µs, and cycle time is 2µs-enabling deterministic real-time data capture without latency or pipeline delay.
Does the LTC2367CDE-18#TRPBF require an external reference voltage?
Yes, the LTC2367CDE-18#TRPBF requires an external reference voltage applied to its REF pins (7 and 8). The device supports VREF from 2.5V to 5.1V, and performance metrics-including SNR, INL, and LSB size-are specified across this range. A low-noise, low-drift reference such as the LTC6655-5 is recommended to achieve datasheet specifications.
What package type is used for the LTC2367CDE-18#TRPBF?
The LTC2367CDE-18#TRPBF uses a 16-lead plastic DFN package measuring 4mm × 3mm with an exposed ground pad (Pin 17). This RoHS-compliant, tape-and-reel packaged variant is optimized for compact, thermally efficient layouts in space-constrained applications like portable instrumentation and medical devices.
How does the daisy-chain mode work on the LTC2367CDE-18#TRPBF?
Daisy-chain mode on the LTC2367CDE-18#TRPBF is enabled by driving the CHAIN pin (1) high. In this mode, the RDL/SDI pin (12) becomes a serial data input, allowing multiple LTC2367 devices to share one SPI bus. Data from upstream devices shifts through SDO→SDI connections, with SDO of the last device returning the concatenated result-reducing host GPIO requirements for multi-channel systems.
What is the power consumption of the LTC2367CDE-18#TRPBF at 500ksps?
At 500ksps, the LTC2367CDE-18#TRPBF consumes 6.8mW total power: 2.7mA from VDD (2.5V) and 0.1mA from OVDD (2.5V), plus reference current (~0.3mA at VREF = 5V). Its auto power-down feature reduces quiescent current to 0.9µA between conversions, making it highly efficient for burst-mode or low-duty-cycle applications.
LTC2367CDE-18#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:
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2367CDE-18#TRPBF FAQ
1.How can I place an order for LTC2367CDE-18#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2367CDE-18#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 LTC2367CDE-18#TRPBF reliable?
The price and inventory of LTC2367CDE-18#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2367CDE-18#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2367CDE-18#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2367CDE-18#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2367CDE-18#TRPBF?
LTC2367CDE-18#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2367CDE-18#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 LTC2367CDE-18#TRPBF?
For technical support, including LTC2367CDE-18#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2367CDE-18#TRPBF requirements.
6.How does Aetrix verify that LTC2367CDE-18#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2367CDE-18#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 LTC2367CDE-18#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2367CDE-18#TRPBF?
All LTC2367CDE-18#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2367CDE-18#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 LTC2367CDE-18#TRPBF part is unused and in its original packaging.
Return procedure for LTC2367CDE-18#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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