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Analog Devices Inc. LTC2325CUKG-16#PBF
- Part No.:
- LTC2325CUKG-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2325CUKG-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:213
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Product details
Overview
LTC2325CUKG-16#PBF from Analog Devices (formerly Linear Technology) is a quad, 16-bit, 5 Msps/channel simultaneous-sampling SAR ADC with differential inputs, onboard 4.096 V temperature-compensated reference, and CMOS/LVDS serial interface. It delivers ±2 LSB INL typical, 82 dB SNR at 2.2 MHz input, and operates from single 3.3 V or 5 V supply - ideal for high-speed data acquisition in multiphase motor control and optical networking.
For engineers reviewing the LTC2325CUKG-16#PBF datasheet, LTC2325CUKG-16#PBF pinout, LTC2325CUKG-16#PBF application, or LTC2325CUKG-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance, 52-pin QFN package thermal robustness to 70°C, simultaneous sampling across four channels with <500 ps aperture delay matching, and dual-mode digital I/O support for FPGA interfacing.
Technical Context
The LTC2325CUKG-16#PBF implements four independent 16-bit SAR ADC cores sharing a common reference architecture, each with dedicated sample-and-hold and internal reference buffers (REFOUT1–4). Its simultaneous sampling is hardware-synchronized via a single CNV input, eliminating inter-channel skew.
It supports configurable digital interface modes: CMOS (1.8 V/2.5 V OVDD), LVDS (2.5 V OVDD), or low-power LVDS, with SDR/DDR clocking options. The internal 4.096 V reference has ≤20 ppm/°C drift and can be disabled via REFBUFEN to accept external references from 1.25 V to 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization with no missing codes across all operating conditions. |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to ~2.2 MHz Nyquist bandwidth with 82 dB SNR. |
| INL | ±2 LSB typical - ensures accurate amplitude fidelity in precision measurement applications like power quality monitoring. |
| SNR | 82 dB typical at fIN = 2.2 MHz - supports >13.3 effective number of bits (ENOB) for high-dynamic-range signal analysis. |
| Reference | 4.096 V internal, 20 ppm/°C max drift - eliminates need for external precision reference in cost-sensitive industrial systems. |
| Power | 40 mW per channel at 5 Msps - balances speed and efficiency for thermally constrained embedded DAQ modules. |
| Package | 52-pin 7 mm × 8 mm QFN - provides compact layout footprint with exposed thermal pad for reliable operation at 70°C ambient. |
Pinout & Package
Package: 52-lead plastic QFN (7 mm × 8 mm), exposed pad (Pin 53) soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– to AIN4+ / AIN4– (Pins 1–2, 4–5, 10–11, 13–14) | Differential analog inputs (4 channels) | Accept ±4.096 V differential range with wide common-mode (0 V to VDD); enable true simultaneous sampling without software alignment. |
| REFOUT1–4 (Pins 6, 9, 22, 45) | Per-channel buffered reference outputs | Provide isolated 4.096 V reference to each ADC core; disable via REFBUFEN to use external reference. |
| CNV (Pin 24) | Convert initiation input | Edge-triggered command initiating simultaneous sampling and conversion; requires low-jitter OVDD-level pulse. |
| SCK / SDO1–4 (Pins 41, 27, 29, 35, 39) or SCK± / SDOA–D± (Pins 41–42, 27–28, 29–30, 35–36, 39–40) | Serial clock and data I/O | Configurable CMOS or LVDS interface supporting SDR/DDR; enables FPGA-compatible high-speed readout with minimal timing margin risk. |
| CMOS/LVDS (Pin 25) & SDR/DDR (Pin 23) | Interface mode configuration | Hardware-selectable I/O standard and data rate mode - no register writes needed for mode change. |
| REFBUFEN (Pin 43) | Internal reference buffer enable | Pulled up internally to VDD; grounding disables all REFOUTx buffers for external reference use. |
Key Features
| Feature | Design Value |
|---|---|
| Four simultaneously sampled channels | Hardware-synchronized acquisition eliminates inter-channel phase error critical for vector measurements in motor control. |
| Onboard 4.096 V reference with 20 ppm/°C drift | Reduces BOM count and layout complexity while maintaining accuracy over 0°C to 70°C operating range. |
| CMOS/LVDS and SDR/DDR interface flexibility | Enables direct connection to diverse host processors (ARM SoCs, Xilinx FPGAs) without level-shifting or serializer ICs. |
| 52-pin QFN with exposed thermal pad | Supports high-density PCB layouts and efficient heat dissipation at 40 mW/channel continuous operation. |
| Nap/sleep power modes | Reduces idle current to 90 μW - extends battery life in portable test equipment with intermittent sampling. |
Applications
| High-Speed Data Acquisition Systems | Optical Networking |
|---|---|
Use Scenario: Real-time spectral analysis of multi-channel sensor arrays in vibration monitoring systems. IC Role / Device Role / Timing Role: Simultaneous sampling front-end ADC capturing synchronized time-domain waveforms across four transducers. Use Value: 5 Msps/channel throughput and <500 ps aperture delay matching preserve phase coherence between channels for accurate FFT-based diagnostics. | Use Scenario: Monitoring analog monitor photodiode outputs in coherent optical transceivers. IC Role / Device Role / Timing Role: High-SNR digitizer for low-noise current-to-voltage converter outputs in CFP2/CFP4 modules. Use Value: 82 dB SNR at 2.2 MHz enables detection of small signal deviations against high common-mode background noise. |
| Multiphase Motor Control | Communications Test Equipment |
Use Scenario: Closed-loop current and voltage sensing in three-phase inverters with neutral-point clamped topologies. IC Role / Device Role / Timing Role: Simultaneous acquisition of phase currents and DC-link voltage for field-oriented control algorithms. Use Value: Guaranteed 16-bit no-missing-codes performance ensures precise torque ripple calculation and harmonic distortion analysis. | Use Scenario: Digitizing RF IF signals in portable spectrum analyzers and vector signal analyzers. IC Role / Device Role / Timing Role: Wide-input-common-mode ADC interfaced to baluns and programmable gain amplifiers. Use Value: 8 VP-P differential input range with 102 dB CMRR rejects supply noise and improves dynamic range in crowded RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 Msps/channel; internal 2.5 V reference; parallel/serial interface; 64-lead LQFP | Higher channel count but lower speed; better suited for slower industrial PLC analog input modules | Select when system requires ≥6 analog inputs and prioritizes ease of microcontroller interfacing over speed. |
| ADS8684 | 4-channel, 16-bit, 1 Msps/channel; integrated PGA; SPI-only interface; 32-pin VQFN | Lower sampling rate but includes programmable gain amplifier; optimized for sensor signal conditioning | Select when front-end signal scaling is required and 5 Msps throughput is unnecessary. |
Compared with AD7606C-16 and ADS8684, the LTC2325CUKG-16#PBF uniquely delivers 5 Msps simultaneous sampling in a 52-pin QFN with integrated 4.096 V reference - making it optimal for space-constrained, high-bandwidth applications where inter-channel timing alignment is non-negotiable.
Availability
LTC2325CUKG-16#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking modules, multiphase motor control drives, and communications test equipment requiring stable component supply and guaranteed long-term manufacturability.
Supply support for LTC2325CUKG-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2325 series was designed by Analog Devices to address demand for high-speed, multichannel, simultaneous-sampling ADCs with integrated references and flexible digital interfaces - targeting next-generation test instrumentation and real-time control systems.
FAQ
What is the maximum sampling rate per channel for the LTC2325CUKG-16#PBF?
The LTC2325CUKG-16#PBF supports a maximum sampling rate of 5 Msps per channel, with simultaneous sampling across all four channels. This is achieved using a single CNV input that triggers concurrent acquisition and conversion, enabling precise time-aligned waveform capture essential for phase-sensitive applications such as motor current analysis and beamforming.
Does the LTC2325CUKG-16#PBF require an external reference voltage?
No, the LTC2325CUKG-16#PBF includes an onboard 4.096 V temperature-compensated reference with ≤20 ppm/°C drift, eliminating the need for an external reference in most applications. However, the internal reference buffers (REFOUT1–4) can be disabled via the REFBUFEN pin to accommodate external references from 1.25 V to 5 V when higher precision or custom voltage scaling is required.
What digital interface options does the LTC2325CUKG-16#PBF support?
The LTC2325CUKG-16#PBF supports both CMOS and LVDS digital interfaces, selected via the CMOS/LVDS pin. It also supports Single Data Rate (SDR) and Double Data Rate (DDR) modes via the SDR/DDR pin. This allows direct interfacing with FPGAs, ASICs, or microcontrollers without level shifters - with LVDS mode reducing EMI and enabling longer trace routing in noisy environments.
What is the operating temperature range for the LTC2325CUKG-16#PBF?
The LTC2325CUKG-16#PBF is specified for operation from 0°C to 70°C (Commercial grade, denoted by 'C' in the part number). This range is validated across all electrical specifications including INL, SNR, and reference stability, ensuring consistent performance in office, lab, and controlled industrial environments.
How is simultaneous sampling implemented in the LTC2325CUKG-16#PBF?
Simultaneous sampling in the LTC2325CUKG-16#PBF is implemented through a shared CNV input that initiates acquisition on all four ADC cores at the exact same instant. Each channel has its own dedicated sample-and-hold circuit and reference buffer (REFOUT1–4), ensuring sub-500 ps aperture delay matching and eliminating inter-channel skew - critical for vector measurements and power quality analysis.
LTC2325CUKG-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 52-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.13V ~ 3.47V, 5V
- Voltage - Supply, Digital:
- 3.13V ~ 3.47V, 5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2325CUKG-16#PBF FAQ
1.How can I place an order for LTC2325CUKG-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2325CUKG-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 LTC2325CUKG-16#PBF reliable?
The price and inventory of LTC2325CUKG-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 LTC2325CUKG-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2325CUKG-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2325CUKG-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2325CUKG-16#PBF?
LTC2325CUKG-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2325CUKG-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 LTC2325CUKG-16#PBF?
For technical support, including LTC2325CUKG-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2325CUKG-16#PBF requirements.
6.How does Aetrix verify that LTC2325CUKG-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2325CUKG-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 LTC2325CUKG-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2325CUKG-16#PBF?
All LTC2325CUKG-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2325CUKG-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 LTC2325CUKG-16#PBF part is unused and in its original packaging.
Return procedure for LTC2325CUKG-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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