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Analog Devices Inc. LTC2175IUKG-14#TRPBF
- Part No.:
- LTC2175IUKG-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2175IUKG-14#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,902
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Product details
Overview
LTC2175IUKG-14#TRPBF from Analog Devices (acquired Linear Technology) is a 14-bit, 125Msps quad simultaneous-sampling analog-to-digital converter in a 52-pin QFN package. It delivers 73.1dB SNR, 88dB SFDR, and 0.15psRMS jitter for high-fidelity IF/RF digitization in communications infrastructure. Its serial LVDS outputs, 1.8V single supply, and 800MHz full-power bandwidth support demanding applications like cellular base station receivers and software-defined radios.
For engineers reviewing the LTC2175IUKG-14#TRPBF datasheet, LTC2175IUKG-14#TRPBF pinout, LTC2175IUKG-14#TRPBF application, or LTC2175IUKG-14#TRPBF equivalent, key selection criteria include guaranteed ±1LSB INL over –40°C to +85°C, selectable 1- or 2-lane LVDS serialization, internal/external reference flexibility via SENSE pin, and low 558mW total power at full speed.
Technical Context
The LTC2175IUKG-14#TRPBF integrates four independent 14-bit ADC cores with shared clocking and digital interface logic. Its sample-and-hold features 800MHz full-power bandwidth and ultralow 0.15psRMS aperture jitter, enabling clean undersampling of 70–140MHz IF signals. The internal duty cycle stabilizer maintains performance across wide input clock duty cycles.
Digital output uses programmable serial LVDS: two bits per channel in 2-lane mode (1.75mA or 3.5mA drive), or one bit per channel in 1-lane mode. Configuration is handled via SPI port or parallel logic inputs (CS/SCK/SDI) depending on PAR/SER pin state, supporting both flexible register control and simplified hardware-mode selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - ensures monotonicity and precision in closed-loop control or spectral analysis. |
| Sampling Rate | 125Msps maximum - supports Nyquist sampling of up to 62.5MHz baseband or undersampling of multi-MHz IF bands. |
| SNR / SFDR | 73.1dB SNR and 88dB SFDR at 70MHz input - enables high dynamic range signal capture in dense RF environments. |
| Analog Supply | Single 1.8V (VDD) supply - simplifies power delivery and reduces board-level DC/DC count versus dual-supply ADCs. |
| Input Bandwidth | 800MHz full-power bandwidth - preserves signal integrity for wideband modulated waveforms without external amplification. |
| Power Dissipation | 558mW total at 125Msps, 2-lane LVDS - balances performance and thermal management in compact RF front-ends. |
| Operating Temp | –40°C to +85°C industrial grade - qualified for outdoor base stations and portable medical imaging equipment. |
Pinout & Package
52-pin (7mm × 8mm) plastic QFN package with exposed pad (Pin 53) soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– AIN2+ / AIN2– AIN3+ / AIN3– AIN4+ / AIN4– |
Differential analog inputs (Ch 1–4) | Accept 1VP-P to 2VP-P differential signals; require matched trace routing and common-mode bias via VCM12/VCM34. |
| VCM12 / VCM34 | Common-mode bias outputs | Nominally VDD/2; used to set input common-mode voltage for channels 1/2 and 3/4 respectively - bypass with 0.1µF ceramic. |
| ENC+ / ENC– | Differential encode clock inputs | Trigger conversion on rising/falling edges; support sine, PECL, LVDS, TTL, or CMOS; internal duty cycle stabilizer enabled by default. |
| OUT1A+/– to OUT4B+/– | LVDS serialized data outputs | Two differential pairs per channel (A/B) in 2-lane mode; configurable 1.75mA/3.5mA drive strength and optional 100Ω on-chip termination. |
| FR+/– / DCO+/– | Frame and data clock outputs | Synchronize LVDS data frames; FR period is twice ENC period in 2-lane mode; DCO provides source-synchronous timing. |
| PAR/SER | Programming mode select | Ground = serial SPI interface (CS/SCK/SDI/SDO); VDD = parallel mode (CS/SCK/SDI control functions directly). |
| SENSE | Reference and input range programming | Selects ±1V (SENSE=VDD), ±0.5V (SENSE=GND), or ±0.8×VSENSE (external 0.625–1.3V reference) - sets full-scale range without external resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Four independent 14-bit ADCs share timing and digital interface - eliminates channel skew for phase-coherent MIMO or beamforming systems. |
| Ultralow 0.15psRMS jitter | Enables high-fidelity undersampling of 70–140MHz IF signals without external jitter cleaners - reduces BOM and layout complexity. |
| Configurable LVDS serialization | 1-lane (1-bit/ch) or 2-lane (2-bit/ch) modes reduce PCB trace count by up to 50% versus parallel-output ADCs - saves layer count and routing area. |
| Internal reference with SENSE pin | Single-pin programming of ±0.5V, ±1V, or user-defined ±0.8×VSENSE input range - eliminates external gain-setting resistors and reference ICs. |
| Industrial temperature grade | Specified from –40°C to +85°C with ±1LSB INL and ±0.3LSB DNL - ensures consistent linearity in outdoor telecom and portable diagnostic equipment. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing multiple 20–100MHz LTE/NR IF channels in macrocell and small cell radio units. IC Role / Device Role / Timing Role: Quad simultaneous-sampling ADC captures phase-aligned I/Q streams for real-time digital predistortion and MIMO processing. Use Value: 88dB SFDR suppresses adjacent-channel interference in spectrally crowded bands; 125Msps rate supports 100MHz instantaneous bandwidth per channel. |
Use Scenario: Reconfigurable wideband receiver in military comms, spectrum monitoring, and cognitive radio platforms. IC Role / Device Role / Timing Role: High-linearity front-end digitizer enabling adaptive frequency hopping and multi-standard waveform support. Use Value: 800MHz input bandwidth and 73.1dB SNR allow direct sampling of UHF/VHF bands without analog downconversion stages. |
| Portable Medical Ultrasound | Multichannel Data Acquisition |
|
Use Scenario: Beamforming receive path in handheld ultrasound scanners requiring compact, low-power analog front-ends. IC Role / Device Role / Timing Role: Simultaneous digitization of 4 echo return channels with precise time alignment for synthetic aperture processing. Use Value: 558mW total power and 1.8V supply enable battery-operated operation; ±1LSB INL ensures accurate tissue contrast quantification. |
Use Scenario: High-channel-count test equipment for semiconductor validation, power electronics monitoring, and scientific instrumentation. IC Role / Device Role / Timing Role: Four-channel synchronized acquisition engine capturing transient events across multiple sensors or phases. Use Value: Low 1.2LSBRMS transition noise and –105dB far-channel crosstalk preserve signal fidelity when measuring low-level coupled phenomena. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9694BCPZ-1300 | 14-bit, 1.3Gsps quad ADC with JESD204B interface; higher speed but 2.5× power (1.4W) and requires FPGA with JESD support. | Better suited for mmWave 5G massive MIMO where >500Msps/channel is required; not drop-in due to interface and thermal constraints. | Choose AD9694BCPZ-1300 only when >1Gsps aggregate throughput and JESD204B backhaul are mandatory. |
| LTC2264IUKG-14#TRPBF | 14-bit, 80Msps quad ADC; identical 52-pin QFN package and pinout; lower power (376mW) but reduced SFDR (85dB at 70MHz). | Valid for cost-sensitive or thermally constrained designs where 80Msps suffices - e.g., narrowband spectrum analyzers or legacy wireless standards. | LTC2264IUKG-14#TRPBF offers true pin-compatible migration path if system sampling rate can be reduced. |
Compared with AD9694BCPZ-1300, LTC2175IUKG-14#TRPBF delivers optimized RF performance at 125Msps with minimal FPGA resource usage and thermal footprint; versus LTC2264IUKG-14#TRPBF, it adds 40Msps headroom and 3dB SFDR improvement for next-gen wideband receivers.
Availability
LTC2175IUKG-14#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2175IUKG-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving aerospace, industrial, automotive, and communications markets.
The LTC2175IUKG-14#TRPBF belongs to ADI's high-speed data converter product line, engineered specifically for wideband communications and instrumentation applications demanding simultaneous multichannel sampling, low jitter, and robust DC accuracy.
FAQ
What is the maximum sampling rate supported by the LTC2175IUKG-14#TRPBF?
The LTC2175IUKG-14#TRPBF supports a maximum sampling rate of 125Msps, as specified in its speed grade designation. This rate is achievable with proper layout, stable 1.8V supplies, and appropriate clock signal integrity. At 125Msps, the device maintains 73.1dB SNR and 88dB SFDR at 70MHz input frequency, making it suitable for high-performance IF digitization tasks in the LTC2175IUKG-14#TRPBF application space.
Does the LTC2175IUKG-14#TRPBF support both internal and external voltage references?
Yes, the LTC2175IUKG-14#TRPBF supports both internal and external references via the SENSE pin. Connecting SENSE to VDD selects the internal reference with ±1V input range; connecting to GND selects ±0.5V; applying an external voltage between 0.625V and 1.3V sets a ±0.8×VSENSE range. This flexibility eliminates external reference ICs in many LTC2175IUKG-14#TRPBF designs while maintaining DC accuracy.
How does the LVDS serialization mode affect the pin configuration of the LTC2175IUKG-14#TRPBF?
The LTC2175IUKG-14#TRPBF supports two LVDS serialization modes controlled by the CS pin in parallel programming mode: 2-lane (default) uses all eight differential output pairs (OUT1A/B through OUT4A/B), while 1-lane disables OUT#B± pins and routes all data through OUT#A± only. This reduces PCB routing density and I/O count without changing the physical LTC2175IUKG-14#TRPBF package or pinout.
What is the operating temperature range for the LTC2175IUKG-14#TRPBF?
The LTC2175IUKG-14#TRPBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" suffix in its part number. Over this full range, it guarantees ±1LSB integral nonlinearity and ±0.3LSB differential nonlinearity, along with stable 73.1dB SNR and 88dB SFDR performance - critical for reliable LTC2175IUKG-14#TRPBF deployment in outdoor base stations and portable medical devices.
Can the LTC2175IUKG-14#TRPBF be configured using both SPI and parallel logic interfaces?
Yes, the LTC2175IUKG-14#TRPBF supports dual configuration modes selected by the PAR/SER pin: when grounded, it enables a standard 4-wire SPI interface (CS/SCK/SDI/SDO); when tied to VDD, it switches to parallel mode where CS, SCK, and SDI become direct logic inputs controlling serialization, output current, and power modes. This dual-mode capability simplifies both prototyping (SPI) and production (parallel) use of the LTC2175IUKG-14#TRPBF.
LTC2175IUKG-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):
- 125M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2175IUKG-14#TRPBF FAQ
1.How can I place an order for LTC2175IUKG-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2175IUKG-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 LTC2175IUKG-14#TRPBF reliable?
The price and inventory of LTC2175IUKG-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 LTC2175IUKG-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2175IUKG-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2175IUKG-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2175IUKG-14#TRPBF?
LTC2175IUKG-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2175IUKG-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 LTC2175IUKG-14#TRPBF?
For technical support, including LTC2175IUKG-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2175IUKG-14#TRPBF requirements.
6.How does Aetrix verify that LTC2175IUKG-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2175IUKG-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 LTC2175IUKG-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2175IUKG-14#TRPBF?
All LTC2175IUKG-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2175IUKG-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 LTC2175IUKG-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2175IUKG-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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