My Inquiry
My Account
Analog Devices Inc. LTC2368IMS-18#TRPBF
- Part No.:
- LTC2368IMS-18#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2368IMS-18#TRPBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,918
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2368IMS-18#TRPBF from Analog Devices (formerly Linear Technology) is an 18-bit, 1 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5 V supply. It delivers 97 dB SNR (typ), ±2.5 LSB INL (max), and guaranteed no missing codes at full 18-bit resolution, with VREF support from 2.5 V to 5.1 V. It is deployed in high-speed data acquisition systems requiring precision, low power, and operation up to 85°C.
For engineers reviewing the LTC2368IMS-18#TRPBF datasheet, LTC2368IMS-18#TRPBF pinout, LTC2368IMS-18#TRPBF application, or LTC2368IMS-18#TRPBF equivalent, key selection criteria include guaranteed 18-bit monotonicity, internal conversion clock eliminating external timing constraints, daisy-chain SPI interface compatibility across 1.8–5 V logic, and thermal performance validated to 85°C ambient.
Technical Context
The LTC2368IMS-18#TRPBF implements a charge-redistribution SAR architecture with a pseudo-differential input stage, where IN+ accepts 0 V to VREF and IN– serves as a ground-sense reference with ±100 mV range. Its internal oscillator fixes tCONV at 460–527 ns, enabling deterministic 1 µs cycle time and zero pipeline latency.
It features dual-supply operation: 2.375–2.625 V on VDD for analog core and 1.71–5.25 V on OVDD for digital I/O, supporting seamless interfacing with mixed-voltage host controllers. Auto power-down between conversions reduces idle current to 0.9 µA (typ), scaling total dissipation from 13.5 mW at 1 Msps to 13.5 µW at 1 ksps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 discrete output levels with guaranteed monotonicity and no missing codes. |
| Sampling Rate | 1 Msps - enables real-time capture of signals up to 500 kHz Nyquist bandwidth without undersampling. |
| SNR | 97 dB (typ, fIN = 2 kHz, VREF = 5 V) - supports >15.8 effective bits (ENOB) in high-fidelity measurement applications. |
| INL | ±2.5 LSB (max) - ensures linearity error ≤ ±0.0038% of full scale, critical for calibration-critical instrumentation. |
| Power Dissipation | 13.5 mW at 1 Msps - achieves 13.5 nJ/conversion efficiency, suitable for thermally constrained portable designs. |
| Reference Range | 2.5 V to 5.1 V - allows flexible dynamic range tuning and compatibility with precision references like LTC6655-5. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating; H-grade variant extends to 125°C. |
Pinout & Package
Package: 16-lead plastic MSOP (5.0 mm × 4.4 mm × 1.1 mm), exposed pad not present (DFN variant has exposed GND pad; MSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects normal mode (RDL/SDI = bus enable) or daisy-chain mode (RDL/SDI = serial data input); referenced to OVDD. |
| VDD (2) | Analog core supply | 2.5 V ±62.5 mV supply; requires 10 µF ceramic bypass to GND for noise suppression during sampling. |
| GND (3,6,10,16) | Analog/digital ground | Four dedicated GND pins minimize ground bounce; must be connected to low-impedance PCB ground plane. |
| IN+ (4) | Pseudo-differential analog input | Accepts 0 V to VREF voltage; sees 45 pF capacitance and 40 Ω switch resistance during acquisition. |
| IN– (5) | Ground sense reference | Range ±100 mV vs GND; used to reject common-mode noise; must connect to local ground or remote sense point. |
| REF (7,8) | Reference voltage inputs | Dual-pin connection for low-impedance 2.5–5.1 V reference; requires 47 µF X5R ceramic decoupling at pin. |
| CNV (9) | Convert trigger input | Rising-edge–initiated conversion start; powers up ADC core; timing-critical for synchronous sampling. |
| BUSY (11) | Status indicator output | Active-high open-drain signal indicating conversion in progress; referenced to OVDD. |
| RDL/SDI (12) | Configurable serial I/O | Function depends on CHAIN state: bus enable (low) or SDI (high); supports multi-device daisy chains. |
| SCK (13) | Serial clock input | Accepts up to 100 MHz SCK (10 ns period); controls MSB-first data shift timing for readout. |
| SDO (14) | Serial data output | Drives straight-binary 18-bit result; valid 9.5 ns after SCK↑; compatible with 1.8–5 V host logic. |
| OVDD (15) | I/O interface supply | 1.71–5.25 V digital supply; sets VIH/VIL thresholds and drives SDO/BUSY/RDL outputs. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay, zero cycle latency | Enables deterministic real-time control loops and immediate post-conversion processing without FIFO buffering. |
| Internal conversion clock | Eliminates need for external clock source or synchronization circuitry-reduces BOM count and layout complexity. |
| 1.8 V to 5 V I/O voltage support | Interoperates directly with FPGA, MCU, and DSP interfaces across legacy and modern logic families without level shifters. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate-critical for battery-powered burst-acquisition instruments. |
| Pseudo-differential input architecture | Rejects common-mode noise on IN+/IN– pair while maintaining unipolar 0–VREF range-simplifies front-end design vs true differential. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer receive paths or MRI gradient coil sensors. IC Role / Device Role / Timing Role: High-resolution, low-latency ADC capturing baseband signals with minimal harmonic distortion and aperture jitter. Use Value: 97 dB SNR and –120 dB THD preserve weak signal integrity; 1 Msps throughput supports real-time beamforming computation. | Use Scenario: Continuous monitoring of pressure, temperature, and flow sensor outputs in PLC-based control cabinets. IC Role / Device Role / Timing Role: Precision data acquisition node converting conditioned analog sensor voltages into deterministic digital streams. Use Value: ±2.5 LSB INL ensures accurate calibration traceability; –40°C to +85°C rating guarantees reliability in unconditioned industrial enclosures. |
| Portable Test Equipment | Automated Test Equipment (ATE) |
Use Scenario: Handheld oscilloscopes and multimeters requiring high ENOB and low power consumption. IC Role / Device Role / Timing Role: Core ADC in battery-operated instruments performing rapid waveform capture and FFT analysis. Use Value: 13.5 mW at 1 Msps and auto power-down extend runtime; daisy-chain SPI simplifies multi-channel board layout. | Use Scenario: High-channel-count ATE systems validating semiconductor parametric performance under production test conditions. IC Role / Device Role / Timing Role: Synchronized multi-ADC digitizer subsystem acquiring stimulus-response data with sub-ns timing alignment. Use Value: Internal oscillator ensures consistent tCONV across units; 18-bit no-missing-codes guarantee metrological confidence in pass/fail decisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit, 5 Msps, bipolar input (±VREF), requires external clock; higher power (43 mW @ 5 Msps); no internal oscillator. | Used where higher throughput and true differential input are mandatory; less suitable for space-constrained or clock-limited designs. | Select when sampling rate >1 Msps is required and system can accommodate external clock generation and bipolar signal conditioning. |
| ADS8860IDRCT | 16-bit, 1 Msps, pseudo-differential unipolar, 1.8 V supply only; lower SNR (92.5 dB typ); smaller 3 mm × 3 mm WSON package. | Targeted at cost-sensitive, ultra-compact portable devices where 16-bit resolution suffices and thermal margin is limited. | Choose for footprint- and budget-constrained applications accepting reduced dynamic range and linearity versus LTC2368IMS-18#TRPBF. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2368IMS-18#TRPBF uniquely balances 18-bit integrity, internal timing autonomy, and 13.5 mW efficiency in an industrial-temperature MSOP-making it optimal for embedded systems prioritizing deterministic latency, low power, and simplified clock tree design.
Availability
LTC2368IMS-18#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2368IMS-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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2368IMS-18#TRPBF belongs to ADI's legacy Linear Technology precision SAR ADC portfolio, engineered for applications demanding high resolution, low noise, and robust operation in thermally demanding environments without sacrificing speed or power efficiency.
FAQ
What is the maximum recommended reference voltage for the LTC2368IMS-18#TRPBF?
The LTC2368IMS-18#TRPBF supports a reference voltage range of 2.5 V to 5.1 V. Operation at 5.1 V maximizes input dynamic range and LSB size (≈19.4 µV), but requires a stable, low-noise reference such as the LTC6655-5. Exceeding 5.1 V violates absolute maximum ratings and may cause permanent damage or degraded INL performance.
Does the LTC2368IMS-18#TRPBF require an external clock source?
No, the LTC2368IMS-18#TRPBF integrates an internal oscillator that sets conversion timing deterministically. This eliminates dependency on external clocks and simplifies system-level timing design. The SCK pin remains active for serial data transfer but does not govern conversion initiation or duration-the CNV rising edge and internal oscillator fully control acquisition and conversion phases.
How does the pseudo-differential input architecture of the LTC2368IMS-18#TRPBF differ from true differential?
The LTC2368IMS-18#TRPBF accepts a single-ended signal on IN+ referenced to a ground-sense IN– pin (±100 mV range), rejecting common-mode noise while maintaining a unipolar 0 V to VREF input span. Unlike true differential ADCs, it does not accept complementary (IN+, IN–) voltage swings around a common-mode bias-simplifying driver design but limiting rejection of large common-mode transients beyond ±100 mV.
Can the LTC2368IMS-18#TRPBF operate with OVDD = 1.8 V while VDD = 2.5 V?
Yes, the LTC2368IMS-18#TRPBF fully supports independent supplies: VDD = 2.5 V (±62.5 mV) for analog core and OVDD = 1.8 V (or 2.5 V, 3.3 V, 5 V) for digital I/O. At OVDD = 1.8 V, VIH = 1.44 V and VIL = 0.36 V, ensuring reliable interface with 1.8 V FPGAs and microcontrollers without level-shifting circuitry.
What is the purpose of the CHAIN pin on the LTC2368IMS-18#TRPBF?
CHAIN (Pin 1) configures serial interface behavior: when low, RDL/SDI acts as a bus-enable input for standalone operation; when high, RDL/SDI becomes a serial data input enabling daisy-chained configurations with multiple LTC2368IMS-18#TRPBF devices sharing one SCK and SDO line. This reduces GPIO count and simplifies multi-channel synchronization in compact systems.
LTC2368IMS-18#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 18
- 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2368IMS-18#TRPBF FAQ
1.How can I place an order for LTC2368IMS-18#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2368IMS-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 LTC2368IMS-18#TRPBF reliable?
The price and inventory of LTC2368IMS-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 LTC2368IMS-18#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2368IMS-18#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2368IMS-18#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2368IMS-18#TRPBF?
LTC2368IMS-18#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2368IMS-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 LTC2368IMS-18#TRPBF?
For technical support, including LTC2368IMS-18#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2368IMS-18#TRPBF requirements.
6.How does Aetrix verify that LTC2368IMS-18#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2368IMS-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 LTC2368IMS-18#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2368IMS-18#TRPBF?
All LTC2368IMS-18#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2368IMS-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 LTC2368IMS-18#TRPBF part is unused and in its original packaging.
Return procedure for LTC2368IMS-18#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2368IMS-18#TRPBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
