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Analog Devices Inc. LTC2344MPUH-16#PBF
- Part No.:
- LTC2344MPUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2344MPUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,464
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Product details
Overview
LTC2344MPUH-16#PBF 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 (typ), and per-channel SoftSpan configuration supporting ±4.096V/0–4.096V/±2.048V/0–2.048V ranges. It operates at 400ksps per channel with internal 4.096V reference and buffer, and is rated for –55°C to +125°C operation in industrial and aerospace signal acquisition systems.
For engineers reviewing the LTC2344MPUH-16#PBF datasheet, LTC2344MPUH-16#PBF pinout, LTC2344MPUH-16#PBF application, or LTC2344MPUH-16#PBF equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing and interface details - all validated against the official Rev A datasheet and Analog Devices' product documentation.
Technical Context
The LTC2344MPUH-16#PBF implements a true simultaneous-sampling architecture across four independent SAR cores, each with dedicated sample-and-hold circuitry and configurable SoftSpan input range selection on a per-conversion basis. Its analog front-end supports rail-to-rail input common-mode voltage (0V to VDD) and achieves 102dB CMRR at 200Hz, enabling direct digitization of high-impedance or mismatched sensor outputs without external level-shifting.
Digital interface flexibility includes pin-selectable CMOS (1.8V–5V) or LVDS serial I/O, with programmable lane count (1–4 lanes in CMOS mode) and no cycle latency due to integrated conversion clock. Internal reference buffer output (REFBUF) is fixed at 4.096V when using the internal bandgap (REFIN = 2.048V), or overdrivable to 2.5V–5V externally with buffer disabled.
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 (all 4 enabled) - enables real-time capture of fast transients in multi-sensor monitoring. |
| INL (Max) | ±1.25LSB - ensures accurate end-point linearity critical for closed-loop control and calibration traceability. |
| SNR (Typ) | 93.4dB at fIN = 2kHz - supports >15.5 effective bits for low-noise instrumentation-grade digitization. |
| CMRR (Typ) | 102dB at 200Hz - rejects common-mode interference from motor drives or power supply coupling in noisy environments. |
| Operating Temp | –55°C to +125°C - qualified for extended-temperature industrial, avionics, and downhole equipment use. |
| Power Dissipation | 81mW (CMOS mode, 4ch @ 400ksps) - enables thermally constrained PCB layouts without forced cooling. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN (UH), exposed pad (Pin 33) soldered to PCB ground for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ / IN0– to IN3+ / IN3– (Pins 1–8) | Differential analog inputs, Channels 0–3 | Simultaneous sampling of four independent signals; supports 0V–VDD common-mode range and ±VREFBUF differential spans. |
| REFIN (Pin 10) | Internal bandgap reference output / external reference input | Nominally 2.048V; bypassed with 0.1µF to GND; accepts 1.25V–2.2V external reference for improved accuracy. |
| REFBUF (Pin 12) | Reference buffer output | Nominally 4.096V (2×REFIN); bypassed with 47µF to GND; disable buffer by grounding REFIN to overdrive REFBUF 2.5V–5V. |
| PD (Pin 13) | Power-down control | Active-high; powers down core and reference buffer; double pulse triggers global reset (equivalent to POR). |
| CS / CNV / BUSY / SDOx / SCKI / SCKO / SDI (Pins 14–32) | Serial interface control and data | Configurable CMOS or LVDS I/O; supports 1–4 data lanes; CNV initiates conversion; BUSY indicates active conversion. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan configuration | Independent selection of ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V range per conversion - eliminates external gain-switching circuitry. |
| Simultaneous 4-channel sampling | True time-aligned acquisition across all channels with <150ps aperture delay matching - essential for phase-coherent multi-sensor analysis. |
| Rail-to-rail input overdrive tolerance | Withstands ±VDD differential overvoltage without corruption - protects against sensor fault conditions and simplifies front-end protection design. |
| Integrated reference and buffer | On-chip 2.048V bandgap + 4.096V buffer reduces BOM count and layout sensitivity; 5ppm/°C tempco ensures stability across –55°C to +125°C. |
| Pin-selectable CMOS/LVDS interface | Hardware-configurable I/O mode avoids firmware dependency; LVDS supports noise-immune long-trace routing; CMOS supports 1.8V–5V logic compatibility. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-speed analog input modules acquiring current/voltage signals from multiple field transmitters (4–20mA, ±10V) in real time. IC Role / Device Role / Timing Role: Simultaneous 4-channel digitizer with configurable SoftSpan ranges adapts to mixed-signal inputs without external multiplexing or gain stages. Use Value: Eliminates channel-to-channel skew and reduces system latency - enabling deterministic control loop execution at sub-millisecond intervals. |
Use Scenario: Distributed I/O nodes in refinery or chemical plant DCS systems requiring long-term stability under extreme ambient temperatures. IC Role / Device Role / Timing Role: Precision ADC with –55°C to +125°C rating and 102dB CMRR handles noisy 4–20mA loop signals near high-power actuators. Use Value: Maintains ±1.25LSB INL and 93.4dB SNR across full temperature range - reducing recalibration frequency and improving process yield. |
| Medical Imaging Signal Chain | High-Speed Data Acquisition |
|
Use Scenario: Ultrasound beamformer front-end digitizing echo signals from phased-array transducers with tight timing alignment. IC Role / Device Role / Timing Role: Simultaneous sampling with <150ps aperture matching preserves phase coherence across receive channels for accurate beam steering. Use Value: Enables high-fidelity RF envelope reconstruction without inter-channel crosstalk artifacts - directly improving image resolution and contrast. |
Use Scenario: Portable vibration analyzers capturing multi-axis accelerometer data during rotating machinery health monitoring. IC Role / Device Role / Timing Role: Low-power 16-bit SAR ADC with 400ksps/channel throughput and 81mW dissipation supports battery-operated field instruments. Use Value: Delivers 15.5 ENOB at 2kHz while operating from single 5V supply - extending runtime without sacrificing spectral fidelity. |
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/0–10V ranges; parallel + SPI interface; 1MSPS total throughput; no LVDS option. | Higher channel count but lower per-channel sampling rate (125ksps/ch); requires external reference; wider package (64-lead LQFP). | Select for cost-sensitive, higher-channel-count systems where LVDS noise immunity and simultaneous 400ksps/ch are not required. |
| ADS8684 | 16-bit, 4-channel, pseudo-simultaneous sampling (multiplexed SAR); 500ksps total; integrated PGA; SPI-only interface. | No true simultaneous sampling; 100ksps/ch effective rate; lower SNR (91dB); lacks SoftSpan flexibility and LVDS support. | Select when input signal bandwidth is <50kHz and system-level channel skew tolerance exceeds 1µs. |
Compared with AD7606C-16 and ADS8684, the LTC2344MPUH-16#PBF uniquely delivers true simultaneous 400ksps/channel sampling with LVDS noise immunity, per-channel SoftSpan reconfiguration, and extended-temperature qualification - making it optimal for phase-critical, high-reliability, and electrically hostile environments.
Availability
LTC2344MPUH-16#PBF is available at Aetrix Electronics and suitable for industrial process control, aerospace telemetry, medical imaging subsystems, and high-reliability test equipment requiring stable component supply across extended temperature ranges.
Supply support for LTC2344MPUH-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2344MPUH-16#PBF belongs to Analog Devices' high-precision simultaneous-sampling SAR ADC family, designed specifically for demanding applications requiring time-aligned multi-channel acquisition, wide input flexibility, and operation in harsh thermal environments.
FAQ
What is the maximum sampling rate per channel for the LTC2344MPUH-16#PBF?
The LTC2344MPUH-16#PBF achieves 400ksps per channel when all four channels are enabled. Throughput scales with channel count: 500ksps per channel with three enabled, 666ksps with two, and 1000ksps with one. This scaling is enabled by shared internal clock resources and reduced conversion overhead per active channel.
Does the LTC2344MPUH-16#PBF require an external reference?
No - the LTC2344MPUH-16#PBF integrates a 2.048V bandgap reference (REFIN) and a buffered 4.096V output (REFBUF). External references are optional: REFIN accepts 1.25V–2.2V for improved accuracy, or REFBUF can be overdriven 2.5V–5V with the internal buffer disabled by grounding REFIN.
How does the SoftSpan feature work on the LTC2344MPUH-16#PBF?
The SoftSpan feature on the LTC2344MPUH-16#PBF allows independent, conversion-by-conversion configuration of each channel's input range: ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V. Configuration is controlled via SPI command bits and takes effect immediately on the next conversion - eliminating need for external gain switches or level shifters.
What is the operating temperature range of the LTC2344MPUH-16#PBF?
The LTC2344MPUH-16#PBF is specified for –55°C to +125°C operation, meeting the MP-grade qualification. This extended range is validated across all key parameters including INL (±1.25LSB), SNR (93.4dB typ), and CMRR (102dB typ), making it suitable for aerospace, downhole, and military applications.
Can the LTC2344MPUH-16#PBF interface with 1.8V logic systems?
Yes - the LTC2344MPUH-16#PBF supports pin-selectable CMOS I/O with OVDD ranging from 1.71V to 5.25V. When OVDD = 1.8V, digital inputs accept 0.2×OVDD to 0.8×OVDD thresholds, and outputs drive compliant 1.8V logic levels, enabling direct interfacing with low-voltage FPGAs and microcontrollers without level shifters.
LTC2344MPUH-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:
- -55°C ~ 125°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2344MPUH-16#PBF FAQ
1.How can I place an order for LTC2344MPUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2344MPUH-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 LTC2344MPUH-16#PBF reliable?
The price and inventory of LTC2344MPUH-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 LTC2344MPUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2344MPUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2344MPUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2344MPUH-16#PBF?
LTC2344MPUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2344MPUH-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 LTC2344MPUH-16#PBF?
For technical support, including LTC2344MPUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2344MPUH-16#PBF requirements.
6.How does Aetrix verify that LTC2344MPUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2344MPUH-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 LTC2344MPUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2344MPUH-16#PBF?
All LTC2344MPUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2344MPUH-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 LTC2344MPUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2344MPUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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