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Analog Devices Inc. LTC2368IDE-16#TRPBF
- Part No.:
- LTC2368IDE-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2368IDE-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,544
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Product details
Overview
LTC2368IDE-16#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers ±0.75 LSB INL (max), guaranteed no missing codes, and 94.7 dB SNR (typ) at fIN = 2 kHz with VREF = 5 V - enabling high-fidelity data acquisition in portable instrumentation and industrial process control systems.
For engineers reviewing the LTC2368IDE-16#TRPBF datasheet, LTC2368IDE-16#TRPBF pinout, LTC2368IDE-16#TRPBF application, or LTC2368IDE-16#TRPBF equivalent, key selection considerations include its 16-lead 4 mm × 3 mm DFN package, –40°C to +85°C operating range, SPI-compatible serial interface with daisy-chain mode, and auto power-down capability scaling dissipation from 13.5 mW at 1 Msps to 13.5 µW at 1 ksps.
Technical Context
The LTC2368IDE-16#TRPBF employs a charge-redistribution CDAC architecture with internal conversion clock, eliminating external timing constraints. Its pseudo-differential input stage accepts 0 V to VREF on IN+ and ±100 mV on IN–, supporting common-mode rejection of 80 dB at 500 kHz while maintaining true 16-bit resolution without pipeline delay or cycle latency.
Conversion is initiated by a rising edge on CNV; BUSY goes high during conversion and returns low upon completion. The SPI-compatible serial interface supports 1.8 V to 5 V I/O logic levels via OVDD and enables daisy-chaining via CHAIN and RDL/SDI pins - allowing synchronized multi-channel sampling without additional framing overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels for high dynamic range measurement |
| Sampling Rate | 1 Msps - supports real-time capture of signals up to 500 kHz Nyquist bandwidth |
| SNR | 94.7 dB (typ) at fIN = 2 kHz - enables >15.7 ENOB for precision sensor and medical imaging applications |
| INL | ±0.75 LSB (max) - ensures monotonicity and accurate full-scale linearity across temperature |
| Power Dissipation | 13.5 mW at 1 Msps - enables battery-operated designs with thermal budget under 500 mW |
| VREF Range | 2.5 V to 5.1 V - allows flexible scaling of input range without external gain stages |
| Operating Temp | –40°C to +85°C - qualified for industrial environments with guaranteed performance over full range |
Pinout & Package
Package: 16-lead (4 mm × 3 mm) 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 integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | High enables daisy-chain mode; low enables normal bus-enable operation on RDL/SDI |
| VDD (2) | Analog supply | 2.5 V ±62.5 mV supply for core ADC circuitry; bypass with 10 µF ceramic capacitor |
| GND (3,6,10,16) | Ground reference | Four dedicated analog/digital ground connections minimize noise coupling and improve PSRR |
| IN+ (4) | Pseudo-differential input | Accepts 0 V to VREF signal; sampled via 45 pF capacitance and 40 Ω switch resistance |
| IN– (5) | Common-mode sense | Accepts ±100 mV w.r.t. GND; used for remote ground sensing and CMRR enhancement |
| REF (7,8) | Reference input | Dual-pin connection for low-impedance 2.5 V–5.1 V external reference; requires 47 µF X5R decoupling |
| CNV (9) | Convert trigger | Rising-edge–initiated conversion; powers up ADC and starts acquisition phase |
| BUSY (11) | Status indicator | Active-high open-drain output signaling conversion in progress; synchronizes host read timing |
| RDL/SDI (12) | Serial interface control/data | Bus enable (CHAIN = low) or serial data input (CHAIN = high); compatible with 1.8 V–5 V logic |
| SCK (13) | Serial clock | Up to 100 MHz SCK frequency supported; defines timing for SDO data output and SDI sampling |
| SDO (14) | Serial data output | MSB-first straight-binary output; valid within 9.5 ns of SCK↑ (CL = 20 pF) |
| OVDD (15) | I/O supply | 1.71 V–5.25 V digital interface supply; sets logic thresholds for all serial pins |
| GND (17) | Exposed pad | Thermal and electrical ground connection; mandatory soldering required for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 16 bits | Guaranteed monotonic transfer function across full temperature range - eliminates code ambiguity in closed-loop control |
| Internal conversion clock | Eliminates need for external timing source or clock distribution network - simplifies layout and reduces jitter sensitivity |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate - enables ultra-low-power burst-mode operation |
| SPI-compatible daisy-chain mode | Enables synchronous multi-ADC acquisition with single SCK and SDO lines - cuts interconnect count and routing complexity |
| Pseudo-differential input architecture | Provides 80 dB CMRR at 500 kHz while retaining unipolar input simplicity - suppresses ground noise without differential driver |
Applications
| Medical Imaging Signal Chain | Portable Data Logger |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer front-ends or MRI gradient monitoring circuits. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 16-bit samples at ≥1 Msps with minimal added noise or distortion. Use Value: 94.7 dB SNR and –118 dB THD preserve weak signal fidelity; ±0.75 LSB INL ensures accurate amplitude reconstruction for diagnostic algorithms. | Use Scenario: Battery-powered environmental sensor node acquiring temperature, pressure, and gas concentration over extended field deployments. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC interfacing with microcontroller via SPI, entering auto power-down between readings. Use Value: 13.5 µW standby power at 1 ksps extends battery life; 16-bit resolution captures subtle long-term drift trends in sensor outputs. |
| Industrial Process Controller | Automated Test Equipment (ATE) |
Use Scenario: Real-time monitoring of motor current, voltage, and position feedback in servo drives and PLC I/O modules. IC Role / Device Role / Timing Role: High-speed, deterministic ADC with no pipeline latency - critical for closed-loop response time under 1 µs. Use Value: 1 Msps throughput and zero-cycle latency enable sub-microsecond control loop updates; –40°C to +85°C rating ensures reliability in factory environments. | Use Scenario: Precision DC parametric testing and AC functional validation of ICs and passive components on production test platforms. IC Role / Device Role / Timing Role: Reference-grade ADC serving as digitizer in calibrated measurement path with traceable accuracy. Use Value: Guaranteed 16-bit no-missing-codes and ±0.75 LSB INL support metrology-grade pass/fail decisions; daisy-chain mode simplifies multi-channel stimulus-response synchronization. |
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, 5 Msps, 2.5 V supply, requires external reference and clock; higher power (43 mW) | Targeted at higher-resolution, higher-throughput applications where SNR > 100 dB is required | Select when resolution > 16 bits and sampling > 1 Msps are mandatory; verify layout compatibility with faster timing margins |
| ADS8860IRGET | 16-bit, 1 Msps, 2.5 V supply, integrated reference, SPI interface; lower SNR (92 dB typ) | Optimized for space-constrained, cost-sensitive designs requiring simplified BOM and reduced external components | Select when board area and component count are prioritized over peak SNR; confirm reference stability meets system accuracy goals |
Compared with AD7960BCPZ-RL7 and ADS8860IRGET, the LTC2368IDE-16#TRPBF uniquely balances 16-bit integrity, 94.7 dB SNR, and ultra-low 13.5 mW power at 1 Msps - making it optimal for industrial and portable systems demanding both precision and energy efficiency without external clock or reference dependencies.
Availability
LTC2368IDE-16#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable data loggers, and industrial process controllers requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LTC2368IDE-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2368IDE-16#TRPBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered for applications demanding high resolution, low power, and robust operation across extended temperature ranges - especially where deterministic latency and guaranteed monotonicity are critical.
FAQ
What is the maximum sampling rate of the LTC2368IDE-16#TRPBF?
The LTC2368IDE-16#TRPBF achieves a maximum sampling rate of 1 Msps with no cycle latency. This is guaranteed across its full operating temperature range (–40°C to +85°C) and supported by internal timing generation - eliminating dependency on external clock sources or complex synchronization circuits. At this rate, the LTC2368IDE-16#TRPBF maintains ±0.75 LSB INL and 94.7 dB SNR performance.
Does the LTC2368IDE-16#TRPBF require an external reference voltage?
Yes, the LTC2368IDE-16#TRPBF requires an external reference voltage applied to the REF pins (7 and 8). The reference must be stable, low-noise, and fall within 2.5 V to 5.1 V. Recommended references include the LTC6655-5 for high-precision applications. The LTC2368IDE-16#TRPBF draws up to 0.7 mA from the reference at 1 Msps, so adequate decoupling (47 µF X5R ceramic) is essential to maintain accuracy.
What package type and footprint does the LTC2368IDE-16#TRPBF use?
The LTC2368IDE-16#TRPBF uses a 16-lead plastic DFN package measuring 4 mm × 3 mm with an exposed thermal pad (Pin 17). This RoHS-compliant package requires soldering the exposed pad directly to the PCB ground plane for optimal thermal performance and electrical stability. Pin pitch is 0.5 mm, and the device is supplied in tape-and-reel format (TRPBF suffix).
How does the daisy-chain mode work on the LTC2368IDE-16#TRPBF?
In daisy-chain mode (CHAIN pin = high), the LTC2368IDE-16#TRPBF accepts serial data on RDL/SDI and shifts out its own 16-bit result on SDO in response to SCK edges - enabling multiple devices to share one SCK and one SDO line. Each device clocks its data into the next, allowing synchronized sampling and compact multi-channel readout without additional control lines. The LTC2368IDE-16#TRPBF remains fully functional in this mode with identical timing specifications.
Is the LTC2368IDE-16#TRPBF pin-compatible with other variants in the LTC2368 family?
Yes, the LTC2368IDE-16#TRPBF shares identical pinout and functionality with all 16-lead DFN variants (e.g., LTC2368CDE-16#TRPBF, LTC2368HDE-16#TRPBF), differing only in temperature grade (I-grade: –40°C to +85°C). All DFN-packaged LTC2368-16 parts use the same 4 mm × 3 mm footprint and pin assignment - enabling drop-in replacement across temperature grades without PCB redesign.
LTC2368IDE-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):
- 1M
- 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:
- -
LTC2368IDE-16#TRPBF FAQ
1.How can I place an order for LTC2368IDE-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2368IDE-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 LTC2368IDE-16#TRPBF reliable?
The price and inventory of LTC2368IDE-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 LTC2368IDE-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2368IDE-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2368IDE-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2368IDE-16#TRPBF?
LTC2368IDE-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2368IDE-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 LTC2368IDE-16#TRPBF?
For technical support, including LTC2368IDE-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2368IDE-16#TRPBF requirements.
6.How does Aetrix verify that LTC2368IDE-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2368IDE-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 LTC2368IDE-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2368IDE-16#TRPBF?
All LTC2368IDE-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2368IDE-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 LTC2368IDE-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2368IDE-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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