My Inquiry
My Account
Analog Devices Inc. LTC2341IUH-18#PBF
- Part No.:
- LTC2341IUH-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2341IUH-18#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,018
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2341IUH-18#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, 18-bit, simultaneous-sampling SAR ADC with differential inputs, ±4LSB INL, 95dB SNR, and per-channel SoftSpan™ configurable input ranges (±4.096V, 0–4.096V, ±2.048V, or 0–2.048V). It operates at 666ksps per channel with integrated 4.096V reference buffer and supports both CMOS (1.8–5V) and LVDS serial interfaces - ideal for high-precision industrial data acquisition systems requiring wide dynamic range and flexible signal conditioning.
For engineers reviewing the LTC2341IUH-18#PBF datasheet, LTC2341IUH-18#PBF pinout, LTC2341IUH-18#PBF application, or LTC2341IUH-18#PBF equivalent, this page delivers verified specifications, validated pin functions, temperature-grade–specific performance (–40°C to +85°C), interface configuration options (LVDS/CMOS), and real-world use cases in PLCs and medical imaging where simultaneous sampling, rail-to-rail common-mode tolerance, and no missing codes at 18 bits are critical.
Technical Context
The LTC2341IUH-18#PBF implements a successive approximation register (SAR) architecture with internal conversion clock and zero-cycle latency, enabling deterministic timing for synchronized multi-channel acquisition. Its analog front-end features 105dB CMRR at 200Hz and rail-to-rail input overdrive tolerance (±VDD), allowing direct digitization of bipolar, unipolar, or arbitrary common-mode signals without external level-shifting circuitry.
Per-channel SoftSpan™ configuration is controlled via SPI register writes, enabling independent range selection (e.g., Channel 0 = ±4.096V, Channel 1 = 0–2.048V) on a conversion-by-conversion basis. The device supports two serial I/O modes: pin-selectable CMOS (with 1–2 lane output) or LVDS, each with distinct timing parameters, supply requirements (OVDD = 1.71–5.25V for CMOS; 2.375–5.25V for LVDS), and power dissipation profiles (74mW typical in CMOS mode).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - guarantees no missing codes across full temperature range (–40°C to +85°C) for precision measurement integrity. |
| Sampling Rate | 666ksps per channel (dual-channel simultaneous) - enables real-time capture of fast transients in process control loops. |
| INL | ±4LSB max - ensures monotonicity and <0.0015% full-scale linearity error for calibration-critical applications. |
| SNR | 95dB typical (fIN = 2kHz, ±4.096V range) - delivers >15.8 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| Input Common Mode Range | 0V to VDD (5V) - allows direct interfacing with sensors, op-amps, or isolated amplifiers operating at varying DC offsets. |
| Reference | Integrated 4.096V buffered reference (REFBUF) with 5ppm/°C tempco - eliminates need for external precision reference in space-constrained designs. |
| Power Dissipation | 74mW typical (CMOS mode, 2 channels, 666ksps) - balances performance and thermal management in dense PCB layouts. |
| Package | 32-lead 5mm × 5mm QFN (UH) with exposed pad - provides low-inductance ground path and thermal efficiency for stable ADC operation. |
Pinout & Package
32-lead (5mm × 5mm) plastic QFN package (UH) with exposed thermal pad (Pin 33 = GND, must be soldered to PCB). Pin numbering follows top-view layout with Pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+, IN0– (Pins 8, 7) | Differential analog input, Channel 0 | Accepts simultaneous sampling of fully differential, bipolar, or unipolar signals with 0V–5V common-mode range and 105dB CMRR. |
| IN1+, IN1– (Pins 2, 1) | Differential analog input, Channel 1 | Independent simultaneous sampling path; supports per-channel SoftSpan™ range configuration without cross-talk degradation (–119dB typical). |
| REFIN (Pin 10) | Bandgap reference output / external reference input | Nominally outputs 2.048V; accepts 1.25–2.2V external reference to overdrive internal buffer for improved accuracy or tempco. |
| REFBUF (Pin 12) | Internal reference buffer output | Provides 4.096V master reference (2×REFIN); bypassed with 47μF ceramic capacitor; disable by grounding REFIN to use external 2.5–5V reference. |
| LVDS/CMOS (Pin 14) | I/O interface mode select | Tie to OVDD for LVDS; tie to GND for CMOS - configures digital interface voltage levels, timing, and power before power-up. |
| CNV (Pin 15) | Conversion start trigger | Edge-triggered input (min 40ns high time); initiates simultaneous sampling on both channels with deterministic aperture delay (1ns). |
| SDO+, SDO– (Pins 24, 25) | LVDS serial data output pair | Differential output for high-noise immunity; requires 100Ω termination; supports 1- or 2-lane CMOS mode when LVDS disabled. |
| PD (Pin 13) | Power-down control | Active-high input; reduces current to 0.33μA (I-grade); double-pulse triggers global reset equivalent to power-on-reset. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input range selection | Enables independent, conversion-by-conversion configuration of ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V - eliminating external gain-switching circuitry and reducing BOM count. |
| Simultaneous sampling with 150ps matching | Guarantees sub-LSB timing alignment between channels for accurate phase-sensitive measurements in motor control or vibration analysis. |
| Rail-to-rail input overdrive tolerance | Withstands ±5V differential overdrive without damage or conversion corruption - simplifies anti-aliasing filter design and improves system robustness. |
| Integrated reference buffer with 5ppm/°C drift | Delivers 4.096V reference with <±0.13% full-scale error drift over –40°C to +85°C - removes need for external trimming or calibration in field-deployed equipment. |
| Pin-selectable LVDS or CMOS serial interface | Supports noise-immune differential signaling (LVDS) or low-power single-ended I/O (CMOS) - adapts to host controller capabilities without redesign. |
| Guaranteed operation to +85°C (I-grade) | Validated performance across full industrial temperature range - ensures reliability in programmable logic controllers and factory automation environments. |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Process Control |
|---|---|
|
Use Scenario: High-accuracy analog input modules acquiring sensor data (pressure, temperature, flow) from multiple field transmitters simultaneously. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC with per-channel SoftSpan™ range selection handles mixed-signal inputs (4–20mA loop receivers, thermocouple amps, RTD bridges) without external gain switching. Use Value: ±4LSB INL and 95dB SNR enable <0.01% measurement accuracy; 105dB CMRR rejects common-mode noise from long cable runs in electrically noisy factory floors. |
Use Scenario: Distributed control systems monitoring chemical reactor parameters (pH, dissolved oxygen, conductivity) with tight synchronization requirements. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC capturing correlated multi-sensor waveforms for real-time feedback control algorithms. Use Value: 150ps aperture delay matching ensures phase coherence across channels; rail-to-rail input tolerance accommodates diverse sensor output ranges without level-shifting circuitry. |
| Medical Imaging Signal Chain | High-Speed Data Acquisition Systems |
|
Use Scenario: Ultrasound beamformer front-ends digitizing echo signals from phased-array transducers with minimal inter-channel skew. IC Role / Device Role / Timing Role: Dual 18-bit SAR ADC providing synchronized digitization of adjacent receive channels for coherent beamforming. Use Value: –114dB THD preserves harmonic content of weak echo signals; 22MHz –3dB input bandwidth supports wideband RF envelope detection without aliasing. |
Use Scenario: Portable oscilloscopes and spectrum analyzers requiring high-resolution, multi-channel acquisition with flexible input scaling. IC Role / Device Role / Timing Role: Configurable ADC enabling user-selectable input ranges (±5V, 0–5V) per channel via SPI, supporting both AC-coupled and DC-coupled signal paths. Use Value: SoftSpan™ reconfiguration on-the-fly eliminates hardware switches; LVDS interface maintains signal integrity at high sample rates over longer PCB traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 18-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-18 (Analog Devices) | 8-channel, parallel/serial interface; ±10V/±5V/±2.5V fixed ranges; no per-channel SoftSpan™; higher power (120mW) | Better suited for multi-channel systems needing >2 inputs; lacks independent range per channel and LVDS option | Select when expanding beyond 2 channels or requiring parallel interface; avoid if per-channel range flexibility or LVDS noise immunity is required. |
| ADS8900B (Texas Instruments) | Single-channel, 20-bit, 1MSPS; SPI-only CMOS interface; ±5V/0–5V fixed ranges; no integrated reference buffer | Higher resolution but no simultaneous dual-channel capability; requires external reference and level-shifting for bipolar inputs | Select for ultra-high-resolution single-channel applications; avoid for simultaneous sampling or systems requiring integrated reference and SoftSpan™ flexibility. |
Compared with AD7606C-18 and ADS8900B, the LTC2341IUH-18#PBF uniquely combines dual-channel simultaneous sampling, per-channel SoftSpan™ configurability, integrated 4.096V reference buffer, and pin-selectable LVDS/CMOS I/O - making it optimal for compact, noise-sensitive industrial and medical systems where channel independence and interface robustness are critical.
Availability
LTC2341IUH-18#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and medical imaging equipment requiring stable component supply, guaranteed –40°C to +85°C operation, and long-term production continuity.
Supply support for LTC2341IUH-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets.
The LTC2341 family was designed for high-precision, multi-channel data acquisition in harsh industrial and medical environments - emphasizing simultaneous sampling integrity, flexible input signal handling, and integrated reference stability across extended temperature ranges.
FAQ
What is the operating temperature range for the LTC2341IUH-18#PBF?
The LTC2341IUH-18#PBF is rated for industrial operation from –40°C to +85°C (I-grade), with guaranteed performance including ±4LSB INL, 95dB SNR, and 105dB CMRR across this full range. This makes the LTC2341IUH-18#PBF suitable for deployment in factory automation, outdoor instrumentation, and other thermally demanding environments without derating.
Does the LTC2341IUH-18#PBF require an external reference?
No - the LTC2341IUH-18#PBF includes an integrated 2.048V bandgap reference (REFIN) and a buffered 4.096V master reference (REFBUF) with 5ppm/°C temperature coefficient. An external reference is optional: REFIN accepts 1.25–2.2V for improved accuracy, or REFBUF can be overdriven with 2.5–5V when the internal buffer is disabled by grounding REFIN.
How does the SoftSpan™ feature work on the LTC2341IUH-18#PBF?
SoftSpan™ allows independent, per-channel input range configuration via SPI register writes - selecting ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V on a conversion-by-conversion basis. This eliminates external gain-switching components and enables mixed-signal acquisition (e.g., Channel 0 = ±4.096V for strain gauges, Channel 1 = 0–2.048V for thermocouples) within a single LTC2341IUH-18#PBF device.
Can the LTC2341IUH-18#PBF operate in LVDS mode and CMOS mode interchangeably?
Yes - the LTC2341IUH-18#PBF supports pin-selectable I/O modes: tie LVDS/CMOS (Pin 14) to GND for CMOS (1.8–5V logic), or to OVDD for LVDS. Mode selection must be set before power-up and cannot be changed dynamically. Each mode has distinct timing specs, supply requirements (OVDD range differs), and power consumption - CMOS uses 74mW typical, LVDS uses 97mW typical at 666ksps.
What is the maximum sampling rate when only one channel is enabled on the LTC2341IUH-18#PBF?
When only one channel is enabled, the LTC2341IUH-18#PBF achieves up to 1000ksps (1MSPS) sampling rate - a 50% increase over the dual-channel 666ksps rate. This is achieved by reallocating internal timing resources, reducing conversion time to 460ns (vs. 500ns dual-channel), and maintaining full 18-bit resolution, ±4LSB INL, and 95dB SNR performance.
LTC2341IUH-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoftSpan™
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 666k
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2341IUH-18#PBF FAQ
1.How can I place an order for LTC2341IUH-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2341IUH-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 LTC2341IUH-18#PBF reliable?
The price and inventory of LTC2341IUH-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 LTC2341IUH-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2341IUH-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2341IUH-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2341IUH-18#PBF?
LTC2341IUH-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2341IUH-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 LTC2341IUH-18#PBF?
For technical support, including LTC2341IUH-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2341IUH-18#PBF requirements.
6.How does Aetrix verify that LTC2341IUH-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2341IUH-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 LTC2341IUH-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2341IUH-18#PBF?
All LTC2341IUH-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2341IUH-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 LTC2341IUH-18#PBF part is unused and in its original packaging.
Return procedure for LTC2341IUH-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2341IUH-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…
