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Analog Devices Inc. LTC2344IUH-16#TRPBF
- Part No.:
- LTC2344IUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2344IUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,224
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Product details
Overview
LTC2344IUH-16#TRPBF from Analog Devices is a 16-bit, quad-channel simultaneous-sampling SAR ADC with differential wide common-mode inputs, ±1.25LSB INL, 93.4dB SNR, and per-channel SoftSpan configuration (±4.096V/0–4.096V/±2.048V/0–2.048V). It operates at 400ksps per channel with integrated 4.096V reference buffer and supports CMOS/LVDS serial interfaces - ideal for high-precision industrial process control data acquisition.
For engineers reviewing the LTC2344IUH-16#TRPBF datasheet, LTC2344IUH-16#TRPBF pinout, LTC2344IUH-16#TRPBF application, or LTC2344IUH-16#TRPBF equivalent, this page delivers verified specifications, package mapping, real-world use scenarios, and validated alternative options for signal chain design in harsh-temperature embedded systems.
Technical Context
The LTC2344IUH-16#TRPBF implements a true simultaneous-sampling architecture across four independent SAR ADC cores, each with configurable SoftSpan input ranges and rail-to-rail input overdrive tolerance. Its analog front-end delivers 102dB CMRR at 200Hz and supports fully differential, bipolar, or unipolar drive modes without external level-shifting circuitry.
Digital interface flexibility includes pin-selectable SPI CMOS (1.8V–5V) or LVDS I/O, with programmable lane count (1–4 lanes in CMOS mode) and no cycle latency due to internal conversion clocking. The device guarantees operation from –40°C to +85°C and features integrated reference buffer with 5ppm/°C tempco and 47μF bypass requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full dynamic range for precision measurement applications. |
| Sampling Rate | 400ksps per channel (simultaneous) - enables real-time capture of fast transients across all four channels without time skew. |
| INL | ±1.25LSB max - ensures accurate end-point linearity critical for closed-loop control and calibration-critical systems. |
| SNR | 93.4dB typical - supports >15.5 effective bits (ENOB) for high-fidelity signal reconstruction in medical imaging or spectral analysis. |
| Input Common Mode Range | 0V to VDD (5V) - allows direct interfacing with sensors, op-amps, or isolated amplifiers without level-shifting components. |
| Reference | Integrated 4.096V buffered reference (±0.005V typ) - eliminates need for external voltage reference and reduces BOM count. |
| Power Dissipation | 81mW typical (CMOS mode, 4 ch @ 400ksps) - enables thermally constrained designs in dense industrial modules. |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and factory-floor deployment without derating. |
Pinout & Package
32-lead (5mm × 5mm) QFN package with exposed thermal pad (Pin 33 = GND), requiring soldering to PCB ground plane for thermal and EMI performance. Pin functions are defined per Analog Devices LTC2344-16 Rev A datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ / IN0– to IN3+ / IN3– (Pins 1–8) | Differential analog inputs, Channels 0–3 | Simultaneously sampled; support ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V SoftSpan ranges with 102dB CMRR. |
| REFIN (Pin 10) | Bandgap reference output / external reference input | Nominally outputs 2.048V; accepts 1.25V–2.2V external reference to overdrive internal buffer. |
| REFBUF (Pin 12) | Internal reference buffer output | Delivers 4.096V (2×REFIN); requires 47μF ceramic bypass; disable by grounding REFIN. |
| PD (Pin 13) | Power-down control | Active-high; initiates low-power state (0.33mW) and global reset on double assertion. |
| CS / CNV / BUSY / SDOx / SCKI / SCKO (Pins 14–32) | Digital interface signals | Configurable for CMOS (1.8V–5V) or LVDS; supports 1–4 data lanes; no latency between conversions. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan configuration | Each channel independently selects ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V on every conversion - eliminates external gain-switching circuitry. |
| Simultaneous sampling | Four independent SAR cores sample at exact same instant - essential for phase-coherent multi-sensor acquisition (e.g., motor current/voltage). |
| Rail-to-rail input overdrive tolerance | Accepts differential input overvoltage up to ±VDD without damage or corruption - simplifies anti-aliasing filter and protection design. |
| Integrated reference buffer | 4.096V output with 5ppm/°C tempco and 47μF bypass - achieves <±0.13% full-scale error drift over temperature without external components. |
| LVDS/CMOS dual-interface select | Pin-strapped interface mode supports noise-immune LVDS (200–600mV diff) or flexible CMOS (1.8V–5V) - adapts to host controller capability. |
| Channel disable for throughput boost | Disabling unused channels increases per-channel sampling rate (e.g., 3 ch → 500ksps, 1 ch → 1000ksps) - optimizes bandwidth allocation dynamically. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-speed analog input modules acquiring current/voltage feedback from multiple field instruments (4–20mA loops, RTDs, strain gauges) in real time. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC digitizing four sensor channels with synchronized timestamps for deterministic control loop execution. Use Value: Eliminates inter-channel timing skew and enables precise derivative-based control algorithms without interpolation artifacts. |
Use Scenario: Distributed I/O systems monitoring pressure, flow, and temperature in chemical plants with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Precision ADC with integrated reference and wide common-mode range directly interfaces with industrial-grade op-amp signal conditioners. Use Value: Reduces component count by integrating reference buffer and supporting 0–5V/±2.5V sensor outputs without external level shifters. |
| Medical Imaging Signal Chain | High-Speed Data Acquisition |
|
Use Scenario: Ultrasound beamformer front-end capturing echo signals from multiple transducer elements with sub-ns timing alignment. IC Role / Device Role / Timing Role: Quad-channel simultaneous ADC providing phase-coherent digitization for digital beamforming and synthetic aperture processing. Use Value: 150ps aperture delay matching and 93.4dB SNR enable high-resolution B-mode image reconstruction with minimal noise floor elevation. |
Use Scenario: Portable test equipment capturing transient waveforms (e.g., power quality analyzers, oscilloscope front-ends) with multi-channel correlation. IC Role / Device Role / Timing Role: Low-latency SAR ADC with no cycle latency and configurable SoftSpan ranges for mixed-signal stimulus-response testing. Use Value: Supports both bipolar (±4.096V) and unipolar (0–4.096V) inputs in same system, reducing need for separate signal path hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 16-bit, 8-channel, ±10V/±5V/±2.5V input ranges; uses external reference; 200ksps/ch; SPI-only interface. | Higher channel count but lower sampling rate; requires external reference and level-shifting for wide common-mode signals. | Choose when needing >4 channels or higher input voltage ranges, but accept reduced speed and added BOM complexity. |
| ADS8684 | 16-bit, 4-channel, pseudo-simultaneous sampling (multiplexed SAR); 500ksps aggregate; internal 4.096V ref; SPI interface only. | No true simultaneous sampling; aperture mismatch >1ns; lower CMRR (90dB); unipolar-only input ranges. | Choose for cost-sensitive applications where inter-channel skew <1µs is acceptable and bipolar inputs are not required. |
Compared with AD7606C-16 and ADS8684, the LTC2344IUH-16#TRPBF uniquely delivers true simultaneous sampling with 102dB CMRR, per-channel SoftSpan flexibility, and integrated buffered reference - making it optimal for phase-critical, high-dynamic-range industrial and medical acquisition where timing integrity and analog simplicity are non-negotiable.
Availability
LTC2344IUH-16#TRPBF is available at Aetrix Electronics and suitable for industrial process control, programmable logic controllers, medical imaging subsystems, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2344IUH-16#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. 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' high-precision simultaneous-sampling SAR ADC product line, designed specifically for demanding applications requiring phase coherence, wide input flexibility, and integrated reference stability in harsh environments.
FAQ
What is the operating temperature range of the LTC2344IUH-16#TRPBF?
The LTC2344IUH-16#TRPBF is rated for operation from –40°C to +85°C (I-grade), making it suitable for industrial automation, factory-floor instrumentation, and outdoor deployed systems where ambient temperature extremes are expected. This rating is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet.
Does the LTC2344IUH-16#TRPBF require an external reference?
No - the LTC2344IUH-16#TRPBF integrates a 2.048V bandgap reference and a 4.096V reference buffer (REFBUF pin), eliminating the need for an external reference in most applications. An external reference can be applied to REFIN (1.25V–2.2V) or REFBUF (2.5V–5V) if higher accuracy or custom voltage is required, but it is not mandatory for standard operation.
How does the SoftSpan feature work on the LTC2344IUH-16#TRPBF?
The SoftSpan feature on the LTC2344IUH-16#TRPBF allows each of the four channels to be independently configured per conversion for ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V input ranges via SPI register writes. This eliminates external gain-switching circuitry and enables mixed-signal acquisition (e.g., one channel measuring ±10V sensor, another measuring 0–3.3V microcontroller output) within the same device.
Can the LTC2344IUH-16#TRPBF operate with LVDS and CMOS interfaces simultaneously?
No - the LTC2344IUH-16#TRPBF supports either LVDS or CMOS digital I/O, selected at power-up via the MODE pin (Pin 32). Both interfaces cannot be active concurrently. LVDS mode requires OVDD ≥ 2.375V and provides noise immunity for long traces; CMOS mode supports 1.8V–5V OVDD and offers flexible lane count (1–4 SDO lines) for bandwidth optimization.
What is the power consumption of the LTC2344IUH-16#TRPBF in active and power-down modes?
In active mode (4 channels, 400ksps, CMOS I/O), the LTC2344IUH-16#TRPBF draws 17.6mA from VDD and 3.0mA from OVDD, totaling ~81mW. In power-down mode (PD = HIGH), it consumes just 0.33mW (65µA on VDD, 1µA on OVDD), enabling rapid wake-up (<200ms REFBUF settling) for duty-cycled acquisition systems.
LTC2344IUH-16#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoftSpan™
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2344IUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2344IUH-16#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 LTC2344IUH-16#TRPBF reliable?
The price and inventory of LTC2344IUH-16#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2344IUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2344IUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2344IUH-16#TRPBF?
LTC2344IUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2344IUH-16#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 LTC2344IUH-16#TRPBF?
For technical support, including LTC2344IUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2344IUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2344IUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2344IUH-16#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 LTC2344IUH-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2344IUH-16#TRPBF?
All LTC2344IUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2344IUH-16#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 LTC2344IUH-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2344IUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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