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Analog Devices Inc. LTC2344IUH-16#PBF
- Part No.:
- LTC2344IUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2344IUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:291
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Product details
Overview
LTC2344IUH-16#PBF from Analog Devices is a 16-bit, quad-channel simultaneous-sampling SAR ADC with differential SoftSpan inputs, ±1.25LSB INL, 93.4dB SNR, and 400ksps per channel throughput. It operates from a 5V supply with integrated 4.096V reference and buffer, supports ±4.096V/0–4.096V/±2.048V/0–2.048V per-channel input ranges, and targets high-precision industrial data acquisition systems requiring wide common-mode range and rail-to-rail overdrive tolerance.
For engineers reviewing the LTC2344IUH-16#PBF datasheet, LTC2344IUH-16#PBF pinout, LTC2344IUH-16#PBF application, or LTC2344IUH-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, 102dB CMRR at 200Hz, SPI CMOS/LVDS dual-interface flexibility, 32-lead 5mm × 5mm QFN package, and –40°C to 85°C industrial temperature grade.
Technical Context
The LTC2344IUH-16#PBF implements a successive approximation register (SAR) architecture with internal conversion clock and zero-cycle latency. Its analog front-end features independently configurable per-channel SoftSpan ranges, enabling mixed bipolar/unipolar signal acquisition across four fully differential input pairs (IN0± to IN3±) with 0V to VDD common-mode support and rail-to-rail overdrive tolerance.
Digital interface options include pin-selectable CMOS (1.8V–5V) or LVDS serial I/O, supporting 1–4 data lanes in CMOS mode. The device integrates a 2.048V bandgap reference (REFIN) and 4.096V reference buffer (REFBUF), both externally bypassable, and includes dedicated PD, CNV, BUSY, and CS control signals for deterministic timing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization without code gaps in critical measurement applications. |
| Sampling Rate | 400ksps per channel (4-channel simultaneous) - enables real-time capture of fast transients across all inputs without inter-channel skew. |
| INL / DNL | ±1.25LSB max INL, ±0.9LSB max DNL - maintains accuracy across full scale for precision sensor interfacing and closed-loop control. |
| SNR / THD | 93.4dB SNR, –114dB THD at 2kHz - delivers high-fidelity digitization for audio-grade and medical imaging signal chains. |
| CMRR | 102dB typical at 200Hz - rejects common-mode noise in noisy industrial environments with unshielded or long-trace analog routing. |
| Supply & Temp | 4.75–5.25V VDD, –40°C to +85°C operating range - supports robust deployment in programmable logic controllers and process control cabinets. |
| Power Dissipation | 81mW typical (CMOS mode, 4 channels) - balances performance and thermal management in dense PCB layouts. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN (UH package); exposed pad (Pin 33) is GND and must be soldered to PCB for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ / IN0– to IN3+ / IN3– (Pins 1–8) | Differential analog inputs, Channels 0–3 | Simultaneously sampled inputs with 0V–VDD common-mode range; each pair accepts SoftSpan-configurable ranges (±4.096V, 0–4.096V, etc.). |
| REFIN (Pin 10), REFBUF (Pin 12) | Internal reference input/output | REFIN outputs 2.048V bandgap; REFBUF provides 4.096V buffered reference; both require external bypassing (0.1µF and 47µF). |
| CNV (Pin 24), BUSY (Pin 23), CS (Pin 22) | Conversion control & status | CNV initiates sampling; BUSY indicates active conversion; CS enables serial interface - enables precise timing synchronization. |
| SDO0–SDO3 / SCKO / SCKI / SDI (Pins 14–21) | Serial data I/O (CMOS or LVDS) | Configurable 1–4 lane CMOS (1.8–5V) or differential LVDS interface; supports high-speed deterministic readout with low EMI. |
| PD (Pin 13), VDD (Pins 17, 26), OVDD (Pin 16), GND (Pins 9,11,20,29,31,32,33) | Power management & supply | PD enables hardware power-down (0.33mW); VDD = 5V core, OVDD = 1.71–5.25V I/O; multiple GND pins minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan configuration | Independent selection of ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V per channel - eliminates external gain-switching circuitry in multi-sensor systems. |
| 102dB CMRR at 200Hz | Enables direct connection to field transducers without instrumentation amplifiers in electrically noisy factory-floor environments. |
| Rail-to-rail input overdrive tolerance | Withstands ±VDD differential overvoltage without corruption - protects against transient surges and sensor disconnect events. |
| Integrated 4.096V reference buffer | Eliminates need for external voltage reference ICs and associated layout complexity while maintaining <±0.13%FS full-scale error. |
| Guaranteed operation to 85°C | Validated performance across full industrial temperature range - suitable for enclosed PLC backplanes and motor drive feedback loops. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density analog input modules acquiring current/voltage signals from pressure, temperature, and flow sensors in distributed I/O racks. IC Role / Device Role / Timing Role: Simultaneous 4-channel sampling ADC with per-channel SoftSpan range selection handles mixed 4–20mA, ±10V, and 0–5V sensor outputs on a single chip. Use Value: Reduces component count by eliminating external programmable gain amplifiers and reference buffers while maintaining 16-bit fidelity across all channels. |
Use Scenario: Closed-loop control systems monitoring reactor temperatures, valve positions, and chemical concentrations in continuous manufacturing plants. IC Role / Device Role / Timing Role: Precision ADC providing synchronized, low-latency feedback for PID controllers with <1ns aperture jitter and 150ps channel matching. Use Value: Enables sub-0.1% control stability via 93.4dB SNR and ±1.25LSB INL - critical for meeting ASME BPE and ISA-88 compliance. |
| Medical Imaging Subsystems | High-Speed Data Acquisition |
Use Scenario: Ultrasound beamformer front-ends digitizing echo return signals from phased-array transducers with variable gain stages. IC Role / Device Role / Timing Role: Low-noise, simultaneous-sampling ADC capturing time-aligned RF envelope data across multiple receive channels. Use Value: 102dB CMRR suppresses common-mode switching noise from HV pulsers; 22MHz –3dB bandwidth supports >10MHz ultrasound carrier frequencies. |
Use Scenario: Modular test equipment capturing transient waveforms from power electronics, battery cells, and RF components under stress conditions. IC Role / Device Role / Timing Role: High-throughput ADC with LVDS interface delivering deterministic 400ksps/channel data streams to FPGA-based acquisition engines. Use Value: Pin-selectable LVDS mode reduces EMI and supports >100MHz serial clock rates - essential for noise-sensitive lab-grade instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 (Analog Devices) | 8-channel, parallel/serial interface, ±10V/±5V fixed input ranges, no per-channel SoftSpan; 225ksps/ch, 86dB SNR | Better channel density but lower sample rate and SNR; lacks independent range configuration per channel | Select when higher channel count is prioritized over per-channel flexibility and dynamic range. |
| ADS8684 (Texas Instruments) | 4-channel, pseudo-differential inputs (not fully differential), ±10.24V/0–10.24V ranges only, 500ksps/ch, 89dB SNR | Higher throughput but limited to two fixed ranges; no common-mode rejection advantage for noisy environments | Select when unipolar/bipolar range coverage suffices and system-level noise immunity is less critical than speed. |
Compared with AD7606C-16 and ADS8684, the LTC2344IUH-16#PBF uniquely delivers per-channel SoftSpan configurability, 102dB CMRR, and 93.4dB SNR in a 4-channel simultaneous-sampling architecture - making it optimal for mixed-signal industrial systems where signal integrity, range agility, and thermal robustness are co-prioritized.
Availability
LTC2344IUH-16#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and medical imaging subsystems requiring stable component supply across extended temperature operation and long product lifecycles.
Supply support for LTC2344IUH-16#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2344-16 belongs to Analog Devices' precision SAR ADC product line, engineered for applications demanding simultaneous multi-channel acquisition, flexible input scaling, and operation in harsh electromagnetic and thermal environments.
FAQ
What is the maximum sampling rate per channel for the LTC2344IUH-16#PBF?
The LTC2344IUH-16#PBF achieves 400ksps per channel when all four channels are enabled. Throughput increases to 500ksps, 666ksps, and 1000ksps when three, two, or one channel is active respectively - enabling adaptive bandwidth allocation in resource-constrained systems.
Does the LTC2344IUH-16#PBF require an external reference voltage?
No. The LTC2344IUH-16#PBF includes an internal 2.048V bandgap reference (REFIN) and a buffered 4.096V output (REFBUF). External bypassing with 0.1µF (REFIN) and 47µF (REFBUF) capacitors is required, but no external reference IC is needed for standard operation.
How does the SoftSpan feature work on the LTC2344IUH-16#PBF?
The SoftSpan feature allows each of the four channels on the LTC2344IUH-16#PBF to be independently configured on a per-conversion basis for ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V input ranges - implemented via internal digital control without external component changes.
What digital interface options does the LTC2344IUH-16#PBF support?
The LTC2344IUH-16#PBF supports pin-selectable CMOS (1.8V–5V) or LVDS serial interfaces. In CMOS mode, 1–4 data lanes can be used; LVDS mode provides noise-immune differential signaling with 275–425mV differential output swing and 1.1–1.3V common-mode voltage.
Is the LTC2344IUH-16#PBF qualified for industrial temperature operation?
Yes. The LTC2344IUH-16#PBF is rated for –40°C to +85°C operation (I-grade), with guaranteed specifications including ±1.25LSB INL, 93.4dB SNR, and 102dB CMRR across this full range - validated per Analog Devices' industrial qualification standards.
LTC2344IUH-16#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):
- 400k
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- 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:
- -
LTC2344IUH-16#PBF FAQ
1.How can I place an order for LTC2344IUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2344IUH-16#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 LTC2344IUH-16#PBF reliable?
The price and inventory of LTC2344IUH-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2344IUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2344IUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2344IUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2344IUH-16#PBF?
LTC2344IUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2344IUH-16#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 LTC2344IUH-16#PBF?
For technical support, including LTC2344IUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2344IUH-16#PBF requirements.
6.How does Aetrix verify that LTC2344IUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2344IUH-16#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 LTC2344IUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2344IUH-16#PBF?
All LTC2344IUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2344IUH-16#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 LTC2344IUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2344IUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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