My Inquiry
My Account
Analog Devices Inc. LTC2369IMS-18#PBF
- Part No.:
- LTC2369IMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2369IMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,869
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2369IMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 1.6 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5 V supply. It delivers ±2.5 LSB INL (max), guaranteed no missing codes at 18 bits, and 96.5 dB SNR (typ) at 2 kHz input with 5 V reference - enabling high-fidelity data acquisition in medical imaging and portable instrumentation.
For engineers reviewing the LTC2369IMS-18#PBF datasheet, LTC2369IMS-18#PBF pinout, LTC2369IMS-18#PBF application, or LTC2369IMS-18#PBF equivalent, key selection considerations include its 16-lead MSOP package with –40°C to +85°C temperature rating, SPI-compatible serial interface supporting daisy-chain mode, internal conversion clock eliminating external timing constraints, and low 18 mW power consumption at full throughput.
Technical Context
The LTC2369IMS-18#PBF employs a charge-redistribution capacitor DAC (CDAC) architecture with pseudo-differential sampling: IN+ accepts 0 V to VREF signals while IN– serves as ground sense (±100 mV range). Conversion initiates on CNV rising edge, with internal oscillator setting fixed 360–412 ns conversion time and zero cycle latency.
Its SPI-compatible serial interface supports 1.8 V to 5 V I/O logic via OVDD, includes BUSY indicator and RDL/SDI dual-function pin for normal/chain modes, and outputs straight-binary 18-bit data MSB-first. Auto power-down between conversions scales quiescent current from 8.6 mA (1.6 Msps) to 0.9 μA (idle).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - provides 262,144 distinct output levels for high dynamic range measurement. |
| Sampling Rate | 1.6 Msps - enables real-time capture of signals up to ~34 MHz input bandwidth (–3 dB). |
| SNR | 96.5 dB (typ, fIN = 2 kHz, VREF = 5 V) - corresponds to ~15.7 effective number of bits (ENOB). |
| INL | ±2.5 LSB (max) - ensures monotonicity and linearity critical for precision control loops and calibration systems. |
| Power Consumption | 18 mW at 1.6 Msps - achieves 11.25 nJ/conversion efficiency, suitable for battery-powered instrumentation. |
| Reference Range | 2.5 V to 5.1 V - allows flexible full-scale adjustment without external gain stages. |
| Operating Temp | –40°C to +85°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
Package: 16-lead plastic MSOP (small outline package), 3 mm × 4.9 mm footprint, exposed pad not present (DFN variant has exposed pad; MSOP does not). Thermal resistance θJA = 110°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | Low = normal mode (RDL/SDI = bus enable); high = daisy-chain mode (RDL/SDI = serial data input). |
| VDD (2) | Analog supply | 2.5 V ±62.5 mV supply for core ADC; bypass with 10 μF ceramic capacitor to GND. |
| GND (3,6,10,16) | Ground reference | Four dedicated analog/digital ground pins minimize noise coupling and ensure stable reference return path. |
| IN+ (4) | Pseudo-differential input (+) | Accepts 0 V to VREF unipolar signal; input capacitance = 45 pF in sample mode. |
| IN– (5) | Pseudo-differential input (–) | Ground sense pin with ±100 mV range; must connect to system ground or remote ground plane. |
| REF (7,8) | Reference voltage inputs | Dual-pin connection for low-impedance 2.5 V–5.1 V reference; requires 47 μF X5R ceramic decoupling. |
| CNV (9) | Convert trigger | Rising-edge–sensitive start-of-conversion signal; initiates acquisition and powers up ADC core. |
| BUSY (11) | Status indicator | Active-high open-drain output signaling conversion in progress; logic referenced to OVDD. |
| RDL/SDI (12) | Serial interface control/data | Configurable: bus enable (normal) or serial data input (chain); OVDD-referenced logic thresholds. |
| SCK (13) | Serial clock input | Accepts up to 100 MHz SCK (10 ns period); controls timing of SDO data output and SDI sampling. |
| SDO (14) | Serial data output | MSB-first straight-binary 18-bit result; tri-state when RDL = low or during BUSY high. |
| OVDD (15) | I/O supply | 1.71 V–5.25 V digital interface supply; sets logic thresholds for all digital pins except VDD. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 18 bits | Guaranteed monotonic transfer function across full temperature range - essential for closed-loop control accuracy. |
| Internal conversion clock | Eliminates need for external timing circuitry or master clock synchronization - simplifies PCB layout and reduces BOM count. |
| Daisy-chain SPI mode | Enables multi-ADC synchronization with single SCK/SCK chain - reduces host GPIO count and simplifies firmware for channel expansion. |
| Auto power-down between conversions | Reduces idle power to 0.9 μA - extends battery life in intermittent-sampling applications like portable diagnostics. |
| Pseudo-differential input architecture | Rejects common-mode noise on IN+/IN– pair while maintaining unipolar 0 V–VREF range - improves EMI immunity without differential driver complexity. |
Applications
| Medical Imaging Signal Chain | High-Speed Industrial DAQ |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer front-ends or MRI gradient coil monitors. IC Role / Device Role / Timing Role: Primary high-resolution ADC capturing transient waveforms with minimal latency and distortion. Use Value: 96.5 dB SNR and –120 dB THD preserve diagnostic image fidelity; 1.6 Msps throughput supports real-time beamforming. |
Use Scenario: Real-time monitoring of motor phase currents, vibration sensors, or pressure transducers in predictive maintenance systems. IC Role / Device Role / Timing Role: High-speed sampling node in distributed sensor networks requiring deterministic timing and low jitter. Use Value: 4 ps aperture jitter and 500 ps aperture delay ensure precise time-domain analysis; SPI daisy-chain simplifies multi-channel sync. |
| Portable Precision Instrumentation | Automated Test Equipment (ATE) |
Use Scenario: Handheld multimeters, portable spectrum analyzers, or field-deployable calibration standards. IC Role / Device Role / Timing Role: Core ADC in battery-operated instruments demanding high resolution and low power. Use Value: 18 mW at full speed and 0.9 μA shutdown current extend runtime; 2.5 V single supply simplifies power architecture. |
Use Scenario: Channel cards in modular ATE platforms performing parametric testing of ICs or RF components. IC Role / Device Role / Timing Role: Precision digitizer with deterministic latency for stimulus-response validation. Use Value: Zero cycle latency and no pipeline delay enable tight loop timing; ±2.5 LSB INL ensures traceable metrology-grade accuracy. |
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, bipolar pseudo-differential input (±VREF), requires external reference and separate analog/digital supplies. | Higher speed but higher power (43 mW) and more complex supply sequencing; lacks integrated daisy-chain mode. | Select when >1.6 Msps throughput is required and system can accommodate higher power and dual-supply design. |
| ADS8860IDRCT | 16-bit, 1 Msps, unipolar pseudo-differential, 1.8 V supply compatible, lower SNR (92 dB typ). | Lower resolution and speed; optimized for ultra-low-power (1.5 mW) portable use, not industrial temperature range. | Select for cost-sensitive, battery-constrained applications where 16-bit resolution suffices and extended temp rating is unnecessary. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2369IMS-18#PBF uniquely balances 18-bit resolution, 1.6 Msps speed, industrial temperature range, and integrated daisy-chain capability - making it optimal for compact, high-channel-count systems needing deterministic latency and low power.
Availability
LTC2369IMS-18#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, high-speed industrial data acquisition, and portable precision instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2369IMS-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 LTC2369IMS-18#PBF belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding high resolution, low noise, and low power in space-constrained industrial and medical systems.
FAQ
What is the maximum sampling rate supported by the LTC2369IMS-18#PBF?
The LTC2369IMS-18#PBF supports a maximum sampling rate of 1.6 Msps, with guaranteed timing performance across its full operating temperature range (–40°C to +85°C). This rate is enabled by its internal oscillator and optimized CDAC architecture, delivering consistent 360–412 ns conversion time without external clock dependency. The LTC2369IMS-18#PBF maintains full 18-bit no-missing-codes performance at this rate.
Does the LTC2369IMS-18#PBF require an external reference voltage?
Yes, the LTC2369IMS-18#PBF requires an external reference voltage applied to the REF pins (7 and 8). It accepts 2.5 V to 5.1 V, and performance metrics such as SNR and INL are specified with VREF = 5 V. A low-noise, low-drift reference like the LTC6655-5 is recommended to achieve datasheet specifications. The LTC2369IMS-18#PBF draws up to 1.1 mA reference current at 1.6 Msps.
How does the daisy-chain mode work on the LTC2369IMS-18#PBF?
Daisy-chain mode is activated by driving the CHAIN pin (1) high. In this mode, the RDL/SDI pin (12) becomes a serial data input, accepting data from the SDO of a preceding ADC in the chain. SDO (14) then outputs the concatenated result of all chained devices on each SCK edge. This enables synchronized multi-channel sampling with a single SPI interface - a feature not available on standard SPI ADCs and critical for minimizing host resource usage in dense sensor arrays.
What is the purpose of the IN– pin on the LTC2369IMS-18#PBF?
The IN– pin (5) on the LTC2369IMS-18#PBF serves as a ground sense reference for the pseudo-differential input stage. It is not a true differential input but rather establishes the common-mode baseline for IN+. Its absolute voltage range is limited to ±100 mV relative to GND, and it must be connected directly to the system ground plane or a remote ground point to maintain CMRR >80 dB. This architecture rejects common-mode noise while preserving unipolar input range - simplifying front-end design versus fully differential ADCs.
Can the LTC2369IMS-18#PBF operate with different I/O voltage levels?
Yes, the LTC2369IMS-18#PBF supports flexible I/O voltage operation via the OVDD pin (15), which accepts 1.71 V to 5.25 V. All digital pins - SCK, BUSY, RDL/SDI, and SDO - use OVDD-referenced logic thresholds (VIH = 0.8×OVDD, VIL = 0.2×OVDD), allowing seamless interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V microcontrollers and FPGAs without level shifters. This eliminates voltage translation components in mixed-supply systems.
LTC2369IMS-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 1.6M
- 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:
- -
LTC2369IMS-18#PBF FAQ
1.How can I place an order for LTC2369IMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2369IMS-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 LTC2369IMS-18#PBF reliable?
The price and inventory of LTC2369IMS-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 LTC2369IMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2369IMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2369IMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2369IMS-18#PBF?
LTC2369IMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2369IMS-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 LTC2369IMS-18#PBF?
For technical support, including LTC2369IMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2369IMS-18#PBF requirements.
6.How does Aetrix verify that LTC2369IMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2369IMS-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 LTC2369IMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2369IMS-18#PBF?
All LTC2369IMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2369IMS-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 LTC2369IMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2369IMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2369IMS-18#PBF 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…
