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Analog Devices Inc. LTC2325CUKG-14#TRPBF
- Part No.:
- LTC2325CUKG-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2325CUKG-14#TRPBF.pdf
- Description:
- IC ADC 14BIT SAR 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,768
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Product details
Overview
LTC2325CUKG-14#TRPBF from Analog Devices (formerly Linear Technology) is a quad, 14-bit + sign successive approximation register (SAR) analog-to-digital converter with simultaneous sampling, differential inputs, and 5 Msps per channel throughput. It operates from a single 3.3V or 5V supply, delivers 81 dB SNR at 2.2 MHz input, ±1 LSB INL typical, and integrates a low-drift 4.096 V internal reference - ideal for high-dynamic-range data acquisition in multiphase motor control and optical networking.
For engineers reviewing the LTC2325CUKG-14#TRPBF datasheet, LTC2325CUKG-14#TRPBF pinout, LTC2325CUKG-14#TRPBF application, or LTC2325CUKG-14#TRPBF equivalent, key selection criteria include guaranteed 14-bit no-missing-codes operation, simultaneous four-channel sampling with <500 ps aperture delay matching, LVDS/CMOS dual-mode serial interface, and operation across 0°C to 70°C industrial temperature range in a 52-lead QFN package.
Technical Context
The LTC2325CUKG-14#TRPBF implements four independent SAR ADC cores sharing a common reference architecture with individually buffered REFOUT1–4 outputs. Its simultaneous sampling is hardware-synchronized via a single CNV input, eliminating inter-channel skew. The device supports both SDR and DDR serial readout modes with configurable CMOS or LVDS I/O using dedicated CMOS/LVDS and SDR/DDR pins.
It features an onboard 2.048 V / 4.096 V temperature-compensated reference with ≤20 ppm/°C drift, selectable via REFBUFEN. Power management includes nap mode (6.4 mA) and sleep mode (20 µA), enabling dynamic power scaling without sacrificing acquisition integrity or timing precision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign - delivers 32,768 quantization levels with bipolar full-scale support for true differential signal capture. |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to ~2.2 MHz Nyquist bandwidth with one-cycle latency. |
| SNR | 81 dB typical at fIN = 2.2 MHz - ensures high-fidelity digitization for demanding instrumentation and communications applications. |
| INL | ±1 LSB typical - guarantees monotonicity and accurate end-point linearity critical for closed-loop control feedback. |
| Reference | Internal 4.096 V ±0.5% with ≤20 ppm/°C drift - eliminates external reference component count and thermal drift sensitivity. |
| Supply | Single 3.3 V or 5 V VDD; 1.71–2.63 V OVDD - simplifies power rail design while supporting 1.8 V/2.5 V host interfaces. |
| Power (5 Msps) | 45 mW per channel typical - balances speed and efficiency for multi-channel systems with thermal constraints. |
Pinout & Package
Package: 52-lead (7 mm × 8 mm) plastic QFN with exposed pad (Pin 53 = GND). RoHS-compliant, lead-free, tape-and-reel packaging (TRPBF suffix).
| 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 swing with wide common-mode range (0 V to VDD); enable true simultaneous sampling without software alignment. |
| REFOUT1–4 (Pins 6, 9, 22, 45) | Independent reference buffer outputs | Each drives its associated ADC core; disable via REFBUFEN to use external reference - supports mixed-reference system designs. |
| SDO1–4 / SDOA±–SDOD± (Pins 27, 29, 35, 39 and 28, 30, 36, 40) | Serial data outputs (CMOS or LVDS) | Configurable per-channel output format; LVDS pairs require 100 Ω termination at receiver - reduce EMI and support long trace routing. |
| SCK / SCK± (Pin 41 / Pins 41–42) | Serial clock input | Accepts CMOS or differential LVDS clock; determines data rate (SDR: ≤105 MHz; DDR: ≤52.5 MHz) - synchronizes all four ADC conversions. |
| CNV (Pin 24) | Convert trigger input | Edge-sensitive command initiating simultaneous sample-and-hold across all four channels - defines precise acquisition window start time. |
| CMOS/LVDS (Pin 25) & SDR/DDR (Pin 23) | I/O interface mode select | Hardware-configured logic-level pins set physical layer and data encoding - no register writes needed for interface reconfiguration. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 4-channel sampling | Hardware-synchronized acquisition eliminates inter-channel phase error - essential for vector current measurement in 3-phase motor control. |
| Onboard 4.096 V reference with 20 ppm/°C max drift | Removes need for external precision reference and associated layout complexity - improves system-level temperature stability. |
| LVDS or CMOS serial interface with SDR/DDR support | Enables flexible FPGA or ASIC interfacing over varying distance/noise requirements without changing PCB layout or firmware. |
| One-cycle latency & 500 ps aperture delay matching | Ensures deterministic timing for real-time control loops and coherent multi-tone analysis - no post-processing alignment required. |
| Nap and sleep power modes | Reduces idle power to 6.4 mA or 20 µA - extends operational life in battery-backed or energy-constrained DAQ systems. |
Applications
| High-Speed Data Acquisition | Optical Networking |
|---|---|
Use Scenario: Capturing transient waveforms from oscilloscope front-ends or radar pulse receivers requiring >2 MHz bandwidth and synchronized multi-channel capture. IC Role / Device Role / Timing Role: Quad SAR ADC performing simultaneous sampling on four analog signal paths with sub-ns aperture matching and 5 Msps sustained throughput. Use Value: Eliminates time-interleaving artifacts and channel-to-channel skew, enabling accurate time-of-flight and phase-difference measurements. | Use Scenario: Digitizing multiple photodiode outputs or modulator monitor signals in coherent optical transceivers operating at 10+ Gbaud. IC Role / Device Role / Timing Role: High-SNR, low-latency ADC converting analog monitoring voltages with precise timing alignment across receive path channels. Use Value: Supports real-time adaptive equalization and laser bias control by delivering clean, synchronized digital samples to DSP engines. |
| Multiphase Motor Control | Communications Test Equipment |
Use Scenario: Sampling three-phase current and DC bus voltage simultaneously in servo drives or inverters for field-oriented control (FOC). IC Role / Device Role / Timing Role: Simultaneous 4-channel ADC capturing Ia, Ib, Ic, and Vdc with <500 ps inter-channel delay matching and 14-bit resolution. Use Value: Enables accurate Clarke/Park transforms and torque ripple minimization without interpolation or oversampling penalties. | Use Scenario: Embedded digitization in vector signal analyzers or 5G NR base station test equipment requiring multi-tone ACPR and EVM validation. IC Role / Device Role / Timing Role: High-linearity ADC acquiring RF downconverted I/Q signals with 81 dB SNR and –88 dB THD at 2.2 MHz. Use Value: Delivers measurement-grade fidelity for modulation accuracy testing without external calibration or averaging overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 16-bit resolution, 1 MSPS per channel, internal 4.096 V reference, parallel/serial interface - lower speed but higher resolution and integrated analog front-end. | Better suited for precision power quality monitoring where resolution > speed; lacks LVDS interface and simultaneous 5 Msps capability. | Select when 16-bit accuracy and built-in PGA/buffering outweigh need for 5 Msps throughput and LVDS noise immunity. |
| ADS8684 | 16-bit, 500 kSPS per channel, single-supply 5 V, SPI interface only - no LVDS, no simultaneous sampling guarantee, lower power (30 mW total). | Targeted at industrial PLC analog input modules where cost and power dominate over speed and channel coherence. | Select for cost-sensitive, lower-speed industrial I/O where guaranteed simultaneous sampling and LVDS are not required. |
Compared with AD7606C-16 and ADS8684, the LTC2325CUKG-14#TRPBF uniquely combines 5 Msps simultaneous sampling, LVDS/CMOS flexibility, and 14-bit + sign resolution - making it optimal for real-time control and broadband signal analysis where timing coherence and noise immunity are non-negotiable.
Availability
LTC2325CUKG-14#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking monitoring, and multiphase motor control applications requiring stable component supply, extended lifecycle support, and consistent parametric performance across production lots.
Supply support for LTC2325CUKG-14#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2325 series belongs to Analog Devices' precision high-speed data acquisition product line, designed specifically for applications demanding simultaneous multi-channel sampling, low latency, and excellent dynamic performance in harsh industrial and communications environments.
FAQ
What is the operating temperature range for the LTC2325CUKG-14#TRPBF?
The LTC2325CUKG-14#TRPBF is rated for 0°C to 70°C ambient operation (Commercial grade, denoted by the "C" in the part number). This is confirmed by the Order Information table in the datasheet, which lists LTC2325CUKG-14#TRPBF under the 0°C to 70°C temperature range column. The device uses the UKG 52-lead QFN package and is specified to maintain all electrical performance parameters within this range.
Does the LTC2325CUKG-14#TRPBF support LVDS interface, and how is it configured?
Yes, the LTC2325CUKG-14#TRPBF supports LVDS interface. It is enabled by tying the CMOS/LVDS pin (Pin 25) to OVDD. In LVDS mode, differential data outputs (SDOA± through SDOD±) and clock inputs (SCK±, CLKOUT±) become active, requiring 100 Ω differential termination at the receiver. The device also supports low-power LVDS when CMOS/LVDS is left floating - a feature explicitly documented in the Pin Functions section.
How many reference outputs does the LTC2325CUKG-14#TRPBF provide, and what are their functions?
The LTC2325CUKG-14#TRPBF provides four independent reference outputs: REFOUT1 (Pin 22), REFOUT2 (Pin 9), REFOUT3 (Pin 6), and REFOUT4 (Pin 45). Each buffers the internal 4.096 V (or 2.048 V) reference to drive one ADC core. They can be disabled via REFBUFEN (Pin 43) to accept external references - enabling flexible system-level reference architecture with per-channel optimization.
What is the maximum sampling rate per channel for the LTC2325CUKG-14#TRPBF, and is it truly simultaneous?
The LTC2325CUKG-14#TRPBF achieves 5 Msps per channel with true hardware-based simultaneous sampling. This is accomplished via a single CNV input that triggers all four internal sample-and-hold circuits at the exact same instant. The datasheet specifies <500 ps aperture delay matching between channels, confirming deterministic, skew-free acquisition - critical for phase-coherent multi-channel applications.
Can the LTC2325CUKG-14#TRPBF operate from a 3.3 V supply, and what are the I/O voltage requirements?
Yes, the LTC2325CUKG-14#TRPBF operates from a single 3.3 V supply (VDD = 3.13 V to 3.47 V) as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Its digital I/O interface requires OVDD between 1.71 V and 2.63 V, supporting 1.8 V or 2.5 V logic families. This allows direct interfacing with modern FPGAs and microcontrollers without level-shifting circuitry.
LTC2325CUKG-14#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 52-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, 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-14#TRPBF FAQ
1.How can I place an order for LTC2325CUKG-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2325CUKG-14#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 LTC2325CUKG-14#TRPBF reliable?
The price and inventory of LTC2325CUKG-14#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2325CUKG-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2325CUKG-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2325CUKG-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2325CUKG-14#TRPBF?
LTC2325CUKG-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2325CUKG-14#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 LTC2325CUKG-14#TRPBF?
For technical support, including LTC2325CUKG-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2325CUKG-14#TRPBF requirements.
6.How does Aetrix verify that LTC2325CUKG-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2325CUKG-14#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 LTC2325CUKG-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2325CUKG-14#TRPBF?
All LTC2325CUKG-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2325CUKG-14#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 LTC2325CUKG-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2325CUKG-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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