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Analog Devices Inc. LTC2325IUKG-12#TRPBF
- Part No.:
- LTC2325IUKG-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2325IUKG-12#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,894
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Product details
Overview
LTC2325IUKG-12#TRPBF from Analog Devices is a quad, 12-bit + sign simultaneous-sampling SAR ADC with differential inputs, 5 Msps per channel throughput, ±0.5 LSB INL (typ), 77 dB SNR at 2.2 MHz, and integrated 4.096 V temperature-compensated reference - designed for high-dynamic-range data acquisition in multiphase motor control and optical networking systems.
For engineers reviewing the LTC2325IUKG-12#TRPBF datasheet, LTC2325IUKG-12#TRPBF pinout, LTC2325IUKG-12#TRPBF application, or LTC2325IUKG-12#TRPBF equivalent, key selection considerations include simultaneous 4-channel sampling timing matching, LVDS/CMOS I/O mode flexibility, internal reference accuracy over –40°C to 85°C, and low-power nap/sleep modes for embedded signal chain optimization.
Technical Context
The LTC2325IUKG-12#TRPBF implements four independent 12-bit + sign SAR ADC cores with true differential input stages, each featuring 8 VP-P full-scale range and wide common-mode support (0 V to VDD). Its architecture guarantees no missing codes and achieves 1-cycle latency at 5 Msps/ch via synchronized CNV-driven sampling.
It integrates four individually buffered reference outputs (REFOUT1–4), selectable between 2.048 V and 4.096 V, with ≤20 ppm/°C drift; supports dual I/O modes (CMOS or LVDS) via CMOS/LVDS pin, and offers SDR/DDR serial interface configuration through SDR/DDR pin - enabling FPGA- or ASIC-compatible high-speed data capture with matched aperture delay (≤500 ps).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit + sign: delivers 13-bit signed output code (–4096 to +4095) for bipolar signal representation without external scaling. |
| Sampling Rate | 5 Msps per channel: enables real-time capture of signals up to ~2.2 MHz Nyquist bandwidth across all four channels simultaneously. |
| INL (typ) | ±0.5 LSB: ensures accurate amplitude fidelity in precision measurement applications such as phase-resolved motor current sensing. |
| SNR (typ) | 77 dB at fIN = 2.2 MHz: supports >12.5 ENOB for high-fidelity spectral analysis in communications and instrumentation. |
| Reference | Internal 4.096 V ±0.5% (max), 20 ppm/°C drift: eliminates need for external reference IC while maintaining stability over industrial temperature range. |
| Power (5V) | 45 mW per channel (typ): enables scalable multi-channel acquisition within thermal constraints of dense PCB layouts. |
| Interface | CMOS or LVDS SPI-compatible, SDR/DDR selectable: provides layout flexibility for noise-sensitive (LVDS) or low-voltage logic (1.8 V CMOS) host interfaces. |
Pinout & Package
Package: 52-lead (7 mm × 8 mm) plastic QFN with exposed pad (Pin 53 = GND). Requires soldering of exposed pad to solid ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– AIN2+ / AIN2– AIN3+ / AIN3– AIN4+ / AIN4– | Differential analog inputs (4 channels) | Each pair accepts ±REFOUTx differential voltage; supports true bipolar input with 0 V to VDD common-mode range - ideal for isolated current/voltage sensing front-ends. |
| REFOUT1–4 | Independent reference buffer outputs | Each supplies 4.096 V (or 2.048 V) to respective ADC core; can be disabled via REFBUFEN to accept external reference - enables mixed-reference system designs. |
| SDO1–4 / SDOA±–SDOD± | Serial data outputs (CMOS or LVDS) | Configurable per channel: CMOS mode uses single-ended SDOx; LVDS mode uses differential SDOA± etc., requiring 100 Ω termination at receiver - critical for EMI robustness in noisy environments. |
| CMOS/LVDS SDR/DDR CNV SCK / CLKOUT | I/O mode select, data rate control, conversion trigger, clock I/O | Hardware-configured interface: CMOS/LVDS pin sets logic family; SDR/DDR selects data rate; CNV edge initiates conversion; SCK/CLKOUT provide skew-matched timing - eliminates software configuration overhead. |
| REFBUFEN OVDD VDD GND (9 pins + EP) | Reference enable, I/O supply, analog supply, ground | REFBUFEN = VDD enables internal buffers; OVDD = 1.71–2.63 V powers digital I/O; VDD = 3.3 V or 5 V powers analog core; multiple GND pins + EP ensure low-impedance return paths for noise-sensitive analog/digital domains. |
Key Features
| Feature | Design Value |
|---|---|
| Four simultaneous sampling channels | Enables phase-coherent acquisition across motor phases or optical wavelengths without inter-channel timing skew - essential for vector control and coherent detection. |
| Onboard 4.096 V reference with 20 ppm/°C drift | Reduces BOM count and layout area vs. discrete reference ICs; maintains <±1 LSB error over –40°C to 85°C operating range without calibration. |
| LVDS or CMOS serial interface with SDR/DDR support | Allows migration between noise-immune differential signaling (LVDS) and low-power single-ended (CMOS), while DDR mode doubles effective data rate without increasing SCK frequency - easing FPGA resource usage. |
| 1-cycle latency and 500 ps aperture delay matching | Ensures deterministic timing for closed-loop control loops; sub-nanosecond channel-to-channel skew supports time-of-flight or phase-difference measurements. |
| Nap and sleep power modes | Reduces idle power to 26 μW (sleep) or 18 mW (nap), enabling duty-cycled acquisition in battery-powered or thermally constrained edge devices. |
Applications
| High-Speed Motor Control | Optical Network Monitoring |
|---|---|
Use Scenario: Real-time sampling of three-phase stator currents and DC-link voltage in servo drives with field-oriented control. IC Role / Device Role / Timing Role: Simultaneous 4-channel acquisition captures all current/voltage waveforms at exact same instant, preserving phase relationships for torque ripple minimization. Use Value: 5 Msps/ch throughput and 1-cycle latency enable 200 kHz PWM loop updates; ±0.5 LSB INL ensures precise current reconstruction for <1% torque error. | Use Scenario: Monitoring multi-wavelength optical power levels and signal integrity in DWDM transceivers. IC Role / Device Role / Timing Role: Four ADCs digitize photodiode outputs from different wavelength channels with matched sampling instants to detect relative power drift or modulation distortion. Use Value: 77 dB SNR supports >12-bit effective resolution for detecting <0.1 dB optical power changes; LVDS interface rejects EMI from high-speed laser drivers. |
| Communications Baseband | High-Dynamic-Range Data Acquisition |
Use Scenario: Digitizing I/Q baseband signals in software-defined radio (SDR) front-ends with direct-conversion architecture. IC Role / Device Role / Timing Role: Two channels acquire I and Q paths simultaneously; remaining two handle auxiliary monitoring (e.g., PA temperature, supply ripple). Use Value: 95 MHz –3 dB input bandwidth and –86 dB THD at 2.2 MHz allow clean capture of wideband OFDM signals; internal reference eliminates external trimming. | Use Scenario: Precision test equipment capturing transient events (e.g., surge waveforms, switching glitches) across multiple sensors. IC Role / Device Role / Timing Role: Quad ADC acts as synchronized front-end for oscilloscope-like acquisition, with all channels sharing one CNV edge for deterministic trigger alignment. Use Value: Guaranteed no missing codes and 12-bit resolution ensure faithful reproduction of fast edges; 52-lead QFN package supports high-density probe card integration. |
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/ch, parallel/serial interface, internal 2.5 V ref, no LVDS option | Better resolution but lower speed; suited for static or slow-varying measurements (e.g., power quality monitoring), not high-bandwidth control loops | Select when ENOB >14 is required and 5 Msps is unnecessary; avoid if LVDS noise immunity or simultaneous 5 Msps is mandatory. |
| ADS8684 | 16-bit, 500 ksps/ch, pseudo-differential inputs, SPI-only, 3.3 V supply only, no internal ref buffer | Lower sample rate and no true differential inputs limit use in high-frequency motor or RF applications; requires external reference and driver amplifiers | Choose for cost-sensitive industrial PLC analog input modules where speed and common-mode rejection are secondary to channel count and integration. |
Compared with AD7606C-16 and ADS8684, the LTC2325IUKG-12#TRPBF uniquely delivers 5 Msps simultaneous sampling with LVDS I/O and integrated 4.096 V reference - making it optimal for closed-loop motor control and optical coherence systems where timing precision, noise immunity, and reference stability are non-negotiable.
Availability
LTC2325IUKG-12#TRPBF is available at Aetrix Electronics and suitable for high-speed motor control, optical network monitoring, and communications baseband applications requiring stable component supply, extended temperature operation (–40°C to 85°C), and tape-and-reel logistics for automated assembly.
Supply support for LTC2325IUKG-12#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2325 product line was developed to address demand for high-speed, multichannel, simultaneous-sampling ADCs with integrated references and flexible digital interfaces - specifically targeting real-time control and broadband signal analysis applications.
FAQ
What is the guaranteed operating temperature range for the LTC2325IUKG-12#TRPBF?
The LTC2325IUKG-12#TRPBF is rated for operation from –40°C to +85°C, as confirmed by its "I" grade designation in the order information table. This industrial temperature range is validated across all electrical specifications including INL, SNR, and reference accuracy - ensuring reliable performance in motor drives and outdoor telecom equipment without derating.
Does the LTC2325IUKG-12#TRPBF require an external reference, or does it include an internal one?
The LTC2325IUKG-12#TRPBF includes an onboard low-drift (≤20 ppm/°C) temperature-compensated reference that outputs either 2.048 V or 4.096 V on pins REFOUT1–4. When REFBUFEN is tied to VDD, the internal buffers are enabled; grounding REFBUFEN disables them, allowing external reference injection - so no external reference is required unless higher precision or custom voltage is needed.
How many analog input channels does the LTC2325IUKG-12#TRPBF support, and are they sampled simultaneously?
The LTC2325IUKG-12#TRPBF supports four fully differential analog input channels (AIN1± through AIN4±), and all four are sampled simultaneously using a shared CNV signal. This true simultaneous sampling - with ≤500 ps aperture delay matching - preserves phase coherence between channels, which is critical for vector control and multi-sensor synchronization in the LTC2325IUKG-12#TRPBF.
What digital interface options does the LTC2325IUKG-12#TRPBF support, and how are they configured?
The LTC2325IUKG-12#TRPBF supports both CMOS and LVDS serial interfaces, selected by the CMOS/LVDS pin (ground = CMOS, OVDD = LVDS, floating = low-power LVDS). It also supports Single Data Rate (SDR) or Double Data Rate (DDR) modes via the SDR/DDR pin. These hardware-configured options eliminate firmware dependencies and ensure deterministic timing in the LTC2325IUKG-12#TRPBF.
What power-saving modes are available on the LTC2325IUKG-12#TRPBF, and what are their typical current draws?
The LTC2325IUKG-12#TRPBF offers Nap Mode (5.3–6.4 mA IVDD, ~18 mW at 3.3 V) and Sleep Mode (20–90 μA total IVDD + IOVDD, ~26 μW). Nap Mode retains reference and bias states for fast wake-up (<50 ms); Sleep Mode powers down most circuitry for ultra-low idle consumption - both modes are controlled by CNV sequencing and are fully specified across the –40°C to 85°C range for the LTC2325IUKG-12#TRPBF.
LTC2325IUKG-12#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:
- 12
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2325IUKG-12#TRPBF FAQ
1.How can I place an order for LTC2325IUKG-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2325IUKG-12#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 LTC2325IUKG-12#TRPBF reliable?
The price and inventory of LTC2325IUKG-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2325IUKG-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2325IUKG-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2325IUKG-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2325IUKG-12#TRPBF?
LTC2325IUKG-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2325IUKG-12#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 LTC2325IUKG-12#TRPBF?
For technical support, including LTC2325IUKG-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2325IUKG-12#TRPBF requirements.
6.How does Aetrix verify that LTC2325IUKG-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2325IUKG-12#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 LTC2325IUKG-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2325IUKG-12#TRPBF?
All LTC2325IUKG-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2325IUKG-12#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 LTC2325IUKG-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2325IUKG-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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