My Inquiry
My Account
Analog Devices Inc. LTC2341CUH-18#PBF
- Part No.:
- LTC2341CUH-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2341CUH-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2341CUH-18#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, 18-bit, simultaneous-sampling SAR ADC with differential wide common-mode inputs, ±4LSB INL, 95dB SNR, and per-channel SoftSpan™ configurable input ranges (±4.096V, 0–4.096V, ±2.048V, 0–2.048V). It operates at 666ksps per channel from a 5V supply and integrates a 4.096V reference buffer, enabling direct digitization of industrial sensor, PLC, and medical imaging signals without external signal conditioning.
For engineers reviewing the LTC2341CUH-18#PBF datasheet, LTC2341CUH-18#PBF pinout, LTC2341CUH-18#PBF application, or LTC2341CUH-18#PBF equivalent, this device delivers guaranteed 18-bit no-missing-codes performance, rail-to-rail input overdrive tolerance, 105dB CMRR, and selectable CMOS/LVDS serial interfaces - critical for high-fidelity, multi-channel data acquisition in temperature-stable industrial environments.
Technical Context
The LTC2341CUH-18#PBF implements a successive approximation register (SAR) architecture with two independent analog front-ends sharing a single conversion core, enabling true simultaneous sampling. Its SoftSpan™ configuration logic allows per-conversion range selection via digital control, supporting bipolar and unipolar modes without hardware reconfiguration.
It features an integrated 4.096V reference buffer (REFBUF) with 20ppm/°C max drift, internal conversion clock with zero cycle latency, and dual I/O modes: SPI-compatible CMOS (1.8V–5V) or LVDS (2.375V–5.25V OVDD), each supporting one- or two-lane output for throughput optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - guarantees full 262,144-code dynamic range with no missing codes across temperature. |
| Sampling Rate | 666 ksps per channel (dual-channel simultaneous) - enables real-time capture of 333 kHz bandwidth signals per channel. |
| INL / DNL | ±4 LSB max INL, ±0.9 LSB max DNL - ensures monotonicity and <0.015% end-point linearity error in precision measurement systems. |
| SNR / THD | 95 dB SNR, –114 dB THD @ 2 kHz - supports >15.5 ENOB for low-distortion spectral analysis in medical and test equipment. |
| Input Common Mode Range | 0 V to VDD (5 V) - accepts arbitrary DC-biased or AC-coupled inputs without level-shifting circuitry. |
| CMRR | 105 dB @ 200 Hz - rejects shared noise in differential sensor bridges and motor current sensing applications. |
| Power Dissipation | 74 mW typical @ 666 ksps, 2 channels - enables thermally constrained designs in sealed industrial enclosures. |
Pinout & Package
Package: 32-lead (5 mm × 5 mm) plastic QFN (UH package); exposed pad (Pin 33) must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+, IN0– | Differential analog input, Channel 0 | Accepts ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V signals with 0V–5V common mode; 105 dB CMRR suppresses noise coupling. |
| IN1+, IN1– | Differential analog input, Channel 1 | Independent simultaneous sampling path; crosstalk <–119 dB prevents inter-channel interference in dual-sensor systems. |
| REFIN | Internal bandgap reference output / external reference input | Outputs 2.048 V (±5 mV); accepts 1.25–2.2 V external reference to calibrate system gain and offset. |
| REFBUF | Reference buffer output (2× REFIN) | Provides 4.096 V (±5 mV) master reference; requires 47 µF ceramic bypass; disable by grounding REFIN when overdriving externally. |
| LVDS/CMOS | I/O interface mode select | Tie to OVDD for LVDS (low-noise, high-speed), tie to GND for CMOS (1.8–5 V logic compatibility). |
| CNV | Conversion start trigger | Edge-triggered; initiates simultaneous sampling on both channels; timing-critical for synchronized multi-axis acquisition. |
| SDO0/SDO1, SCKO, SCKI, SDI, CS, BUSY | Serial interface signals | Supports 100 MHz CMOS SPI or 250 Mbps LVDS; BUSY indicates conversion completion; CS enables output drivers. |
| PD | Power-down control | Active-high; reduces current to ≤0.33 µA (H-grade); double-pulse triggers global reset for deterministic startup. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input range selection | Enables runtime switching between ±4.096V, 0–4.096V, ±2.048V, and 0–2.048V - eliminates external gain-switching components in multi-range sensor systems. |
| Simultaneous sampling with aperture matching | 150 ps max aperture delay mismatch between channels - preserves phase coherence for vector measurements in motor control and power quality analyzers. |
| Rail-to-rail input overdrive tolerance | Withstands ±5 V differential overvoltage without damage or conversion corruption - simplifies protection design for field-connected industrial sensors. |
| Guaranteed operation to 125°C | Validated for H-grade (–40°C to +125°C) operation - suitable for under-hood automotive data loggers and downhole oilfield instrumentation. |
| Integrated reference buffer with low drift | 4.096 V output, 20 ppm/°C max tempco, 0.13%FS full-scale error - removes need for external precision voltage references in portable test gear. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-accuracy analog input modules acquiring 4–20 mA current loop signals and RTD/thermocouple outputs in factory automation cabinets. IC Role / Device Role / Timing Role: Dual-channel simultaneous ADC digitizes two sensor inputs (e.g., pressure + temperature) with matched timing for closed-loop PID computation. Use Value: ±4LSB INL and 105 dB CMRR ensure <0.02% reading error despite shared ground noise and EMI in noisy plant floors. |
Use Scenario: Distributed I/O nodes monitoring flow, level, and valve position in chemical processing plants with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Precision ADC interfaces with isolated signal conditioners and microcontrollers via CMOS SPI, supporting 666 ksps burst sampling during fault events. Use Value: SoftSpan™ configurability allows single BOM to support multiple sensor types (bipolar strain gauges, unipolar pH probes) without layout changes. |
| Medical Imaging | High Speed Data Acquisition |
Use Scenario: Ultrasound beamformer front-end digitizing echo signals from phased-array transducers with precise time-of-flight correlation. IC Role / Device Role / Timing Role: Simultaneous sampling captures two adjacent channel pairs for beam steering calculations; LVDS interface minimizes jitter-induced image artifacts. Use Value: 95 dB SNR and –114 dB THD preserve weak echo amplitudes and harmonic content critical for tissue differentiation. |
Use Scenario: Portable oscilloscope or spectrum analyzer capturing transient waveforms in R&D labs and field service tools. IC Role / Device Role / Timing Role: Dual 18-bit ADC channels acquire differential probe inputs with zero-latency internal clock, feeding FPGA-based real-time FFT engines. Use Value: 74 mW power dissipation enables battery-powered operation while maintaining >15.5 ENOB for accurate waveform reconstruction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-18 | 18-bit, 8-channel, 1 MSPS, internal reference, parallel/serial interface; no SoftSpan™; ±1 LSB INL; 100 dB SNR. | Higher channel count but fixed ±10 V input range; lacks per-channel range flexibility and simultaneous sampling guarantee across all 8 channels. | Select for cost-sensitive, multi-input systems where range programmability is not required and parallel bus interface is preferred. |
| ADS8688 | 16-bit, 8-channel, 500 kSPS, integrated PGA, SPI interface; ±0.5 LSB INL; 89 dB SNR; 125°C rated. | Lower resolution and SNR; includes programmable gain amplifier (PGA) but no simultaneous sampling; optimized for direct sensor interfacing. | Select when on-chip PGA eliminates external amplification and 16-bit resolution suffices for vibration monitoring or HVAC control. |
Compared with AD7606C-18 and ADS8688, the LTC2341CUH-18#PBF uniquely combines per-channel SoftSpan™ range selection, guaranteed simultaneous sampling, and 95 dB SNR in a compact 32-pin QFN - making it optimal for space-constrained, high-fidelity dual-sensor applications demanding runtime adaptability and phase coherence.
Availability
LTC2341CUH-18#PBF is available at Aetrix Electronics and suitable for industrial process control, medical imaging subsystems, and high-speed data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed C-grade (0°C to 70°C) performance.
Supply support for LTC2341CUH-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 LTC2341 family was designed specifically for high-accuracy, multi-channel data acquisition in harsh industrial and medical environments - emphasizing simultaneous sampling integrity, input flexibility, and thermal stability across extended temperature ranges.
FAQ
What is the maximum sampling rate of the LTC2341CUH-18#PBF in dual-channel mode?
The LTC2341CUH-18#PBF achieves 666 ksps per channel in dual-channel simultaneous sampling mode. When only one channel is enabled, throughput increases to 1000 ksps. This is enabled by its internal conversion clock and zero-cycle-latency architecture - no pipeline delay or dead time between conversions.
Does the LTC2341CUH-18#PBF require an external reference voltage?
No, the LTC2341CUH-18#PBF includes an integrated 2.048 V bandgap reference (REFIN) and a buffered 4.096 V output (REFBUF) with 20 ppm/°C max drift. External referencing is optional: REFIN accepts 1.25–2.2 V for improved accuracy, or REFBUF can be overdriven with 2.5–5 V when the internal buffer is disabled.
How does the SoftSpan™ feature work on the LTC2341CUH-18#PBF?
The SoftSpan™ feature on the LTC2341CUH-18#PBF allows per-conversion, software-selectable input ranges: ±4.096 V, 0–4.096 V, ±2.048 V, or 0–2.048 V - configured independently for each channel via SPI command. This eliminates external gain-switching circuitry and enables adaptive signal conditioning in real time.
What is the operating temperature range for the LTC2341CUH-18#PBF?
The LTC2341CUH-18#PBF is specified for the C-grade temperature range: 0°C to +70°C. It is pin- and function-compatible with the I-grade (–40°C to +85°C) and H-grade (–40°C to +125°C) variants (LTC2341IUH-18#PBF and LTC2341HUH-18#PBF), allowing seamless upgrade paths for extended environmental requirements.
Can the LTC2341CUH-18#PBF interface directly with an FPGA using LVDS?
Yes, the LTC2341CUH-18#PBF supports native LVDS serial output with differential SDO/SCKO pairs, 250 Mbps data rate, and 1.1–1.3 V common-mode voltage. When LVDS/CMOS pin is tied to OVDD, the device configures for LVDS mode - enabling low-jitter, noise-immune communication with Xilinx or Intel FPGAs without level translators.
LTC2341CUH-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:
- 18
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2341CUH-18#PBF FAQ
1.How can I place an order for LTC2341CUH-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2341CUH-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 LTC2341CUH-18#PBF reliable?
The price and inventory of LTC2341CUH-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 LTC2341CUH-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2341CUH-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2341CUH-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2341CUH-18#PBF?
LTC2341CUH-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2341CUH-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 LTC2341CUH-18#PBF?
For technical support, including LTC2341CUH-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2341CUH-18#PBF requirements.
6.How does Aetrix verify that LTC2341CUH-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2341CUH-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 LTC2341CUH-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2341CUH-18#PBF?
All LTC2341CUH-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2341CUH-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 LTC2341CUH-18#PBF part is unused and in its original packaging.
Return procedure for LTC2341CUH-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2341CUH-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…
