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Analog Devices Inc. LTC2170IUKG-14#TRPBF
- Part No.:
- LTC2170IUKG-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2170IUKG-14#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,862
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Product details
Overview
LTC2170IUKG-14#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, quad-channel simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range signal digitization at 25Msps. It delivers 73.4dB SNR, 90dB SFDR, and 0.15psRMS jitter, enabling undersampling of IF signals up to 140MHz in communications infrastructure and portable medical imaging systems.
For engineers reviewing the LTC2170IUKG-14#TRPBF datasheet, LTC2170IUKG-14#TRPBF pinout, LTC2170IUKG-14#TRPBF application, or LTC2170IUKG-14#TRPBF equivalent, key selection criteria include its 25Msps sampling rate, serial LVDS output architecture with 1-/2-lane mode flexibility, –40°C to +85°C industrial temperature grade, and 52-pin 7mm × 8mm QFN package with exposed thermal pad.
Technical Context
The LTC2170IUKG-14#TRPBF implements four independent 14-bit ADC cores with shared clocking and synchronization logic, supporting true simultaneous sampling across all channels. Its sample-and-hold features 800MHz full-power bandwidth and ultralow acquisition jitter, critical for coherent multichannel RF sampling.
Digital interface uses serialized LVDS outputs per channel-configurable for 1-bit or 2-bit per lane-with programmable output current (1.75mA/3.5mA), internal 100Ω termination, and adjustable common-mode voltage (1.125V–1.375V). Clock inputs accept differential (LVDS/PECL) or single-ended (CMOS/TTL) signals, aided by an on-chip duty cycle stabilizer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement. |
| Sampling Rate | 25Msps - fixed speed grade for low-power multichannel data acquisition with deterministic latency. |
| SNR | 73.4dBFS at 70MHz input - enables high-fidelity digitization of narrowband IF signals in SDR front ends. |
| SFDR | 90dBc (2nd/3rd harmonic) at 70MHz - suppresses spurious content critical for spectral purity in base station receivers. |
| Jitter | 0.15psRMS aperture jitter - limits noise floor degradation when undersampling >100MHz carriers. |
| Power | 162mW total (75mW sleep, 1mW nap) - supports battery-powered portable imaging and field-deployable test equipment. |
| Input Range | Selectable 1VP-P to 2VP-P differential - simplifies front-end gain staging without external scaling components. |
Pinout & Package
52-pin (7mm × 8mm) plastic QFN package with exposed thermal pad (Pin 53 = GND), rated for –40°C to +85°C operation. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– AIN2+ / AIN2– AIN3+ / AIN3– AIN4+ / AIN4– | Differential analog inputs (Ch. 1–4) | Accept ±0.5V to ±1V differential signals; VCM12/VCM34 pins provide common-mode bias at VDD/2. |
| ENC+ / ENC– | Differential encode clock input | Edge-triggered sampling control; supports duty cycle stabilization for non-ideal clock sources. |
| OUT1A+/– to OUT4B+/– | LVDS serialized data outputs | Two differential pairs per channel (1-/2-lane mode); configurable output current and internal 100Ω termination. |
| FR+/–, DCO+/– | Frame and data clock outputs | Provide timing alignment for deserialization; FR period equals 2× ENC period in 2-lane mode. |
| PAR/SER, CS, SCK, SDI | Parallel/serial configuration interface | Select programming mode (serial SPI or parallel logic) and configure LVDS format, power modes, and reference settings. |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Enables phase-coherent multichannel acquisition for beamforming, time-of-flight, and I/Q demodulation without inter-channel skew. |
| Serial LVDS interface | Reduces PCB trace count by 50% vs parallel LVDS; supports 1-/2-lane modes to balance speed, power, and FPGA pin utilization. |
| Internal clock duty cycle stabilizer | Allows use of asymmetric clocks (e.g., from PLLs or crystal oscillators) without SNR degradation at full 25Msps rate. |
| Programmable input range & reference | SENSE pin selects ±0.5V, ±1V, or custom ±0.8×VSENSE range (0.625V–1.3V), eliminating external level-shifting circuitry. |
| Low-power sleep/nap modes | Reduces active power to 1mW (nap) or 75mW (sleep) during idle periods - extends runtime in portable diagnostic devices. |
Applications
| Cellular Base Stations | Portable Medical Imaging |
|---|---|
Use Scenario: Digitizing multiple antenna receive paths in LTE/5G massive MIMO radio units. IC Role / Device Role / Timing Role: Quad-channel ADC capturing synchronized I/Q samples from RF front ends at 25Msps with <10ps inter-channel skew. Use Value: Enables real-time digital beamforming with 73.4dB SNR and 90dB SFDR, preserving EVM under dense spectral occupancy. | Use Scenario: High-resolution ultrasound beamformer requiring low-noise, time-aligned echo sampling across transducer arrays. IC Role / Device Role / Timing Role: Simultaneous sampling of four analog front-end channels with 0.15psRMS jitter to maintain spatial coherence. Use Value: Supports 15MHz bandwidth imaging with 73.4dB SNR, directly improving contrast resolution and tissue differentiation. |
| Multichannel Data Acquisition | Nondestructive Testing |
Use Scenario: Portable vibration analysis system monitoring rotating machinery using four synchronized sensors. IC Role / Device Role / Timing Role: Low-power 14-bit digitization of accelerometer outputs with 25Msps sustained throughput and 162mW total dissipation. Use Value: Delivers 120dB dynamic range over 10kHz bandwidth while enabling >8-hour battery life via nap-mode power gating. | Use Scenario: Ultrasonic flaw detection in aerospace composites using pulsed echo time-of-flight measurements. IC Role / Device Role / Timing Role: Simultaneous capture of four transducer return signals with sub-nanosecond timing alignment for precise defect localization. Use Value: Achieves <1mm depth resolution at 5MHz center frequency using 73.4dB SNR and 800MHz input bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS52J90IRGCT | 14-bit, 8-channel, 65Msps; JESD204B interface; higher power (1.2W); no internal reference | Targets high-channel-count baseband digitization where FPGA JESD204B connectivity is available | Choose ADS52J90IRGCT for >4-channel systems needing JESD204B serialization and higher sample rates. |
| LTC2160IUKG-12#TRPBF | 12-bit, quad-channel, 25Msps; identical pinout/package; lower SNR (70.5dB), lower power (125mW) | Cost-sensitive applications accepting 12-bit resolution for reduced BOM and layout complexity | Choose LTC2160IUKG-12#TRPBF when 12-bit resolution suffices and board space/power budget is constrained. |
Compared with ADS52J90IRGCT and LTC2160IUKG-12#TRPBF, the LTC2170IUKG-14#TRPBF uniquely balances 14-bit precision, quad-channel simultaneity, ultra-low jitter (0.15psRMS), and sub-200mW power in a compact QFN - making it optimal for portable, battery-operated, and thermally constrained instrumentation.
Availability
LTC2170IUKG-14#TRPBF is available at Aetrix Electronics and suitable for cellular base stations, portable medical imaging systems, and multichannel data acquisition requiring stable component supply, long-term industrial temperature support, and consistent parametric performance across production lots.
Supply support for LTC2170IUKG-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 industrial, automotive, communications, and healthcare markets.
The LTC2170IUKG-14#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring simultaneous multichannel sampling, low jitter, and robust DC accuracy over industrial temperature ranges.
FAQ
What is the maximum sampling rate supported by the LTC2170IUKG-14#TRPBF?
The LTC2170IUKG-14#TRPBF is a fixed-speed-grade device rated for 25Msps operation. This is confirmed in the "Converter Characteristics" table (Page 6), where fS MIN/TYP/MAX for LTC2170-14 is specified as 5/25/25MHz. Exceeding 25Msps violates guaranteed AC performance and may cause missing codes or increased jitter. The LTC2170IUKG-14#TRPBF must be operated within this limit for full specification compliance.
Does the LTC2170IUKG-14#TRPBF support internal or external voltage reference configurations?
Yes, the LTC2170IUKG-14#TRPBF supports both internal and external reference modes via the SENSE pin (Pin 50). Tying SENSE to VDD selects ±1V input range with internal 1.25V reference; grounding SENSE selects ±0.5V range; applying 0.625V–1.3V to SENSE sets ±0.8×VSENSE range. Internal reference specs include 1.250V typical output, ±25ppm/°C drift, and 7Ω output resistance - all verified in the "Internal Reference Characteristics" table (Page 4).
What LVDS output configurations does the LTC2170IUKG-14#TRPBF support?
The LTC2170IUKG-14#TRPBF supports two LVDS serialization modes: 1-lane (1 bit per channel per clock edge) and 2-lane (2 bits per channel per clock edge), selected via the CS pin in parallel programming mode. Output current is configurable (1.75mA or 3.5mA) using SCK, and internal 100Ω termination is enabled via SDO. Common-mode voltage is adjustable between 1.125V and 1.375V - details are in the "Digital Data Outputs" section (Page 5) and timing diagrams (Pages 8–10).
How is simultaneous sampling ensured across all four channels of the LTC2170IUKG-14#TRPBF?
Simultaneous sampling in the LTC2170IUKG-14#TRPBF is achieved through a shared sample-and-hold (S/H) architecture with four independent but identically clocked ADC cores. All channels trigger on the same ENC+/ENC– edge, and inter-channel skew is minimized by matched internal routing and common clock distribution. The datasheet specifies near-channel crosstalk of –90dBc and far-channel crosstalk of –105dBc (Page 4), confirming tight timing correlation essential for coherent multichannel acquisition.
What power-saving modes are available on the LTC2170IUKG-14#TRPBF, and how are they activated?
The LTC2170IUKG-14#TRPBF offers Nap Mode (75mW) and Sleep Mode (1mW), both activated via SPI register writes or parallel logic inputs (SDI in parallel mode). Nap Mode disables ADC cores but retains configuration and reference; Sleep Mode powers down references and digital logic entirely. Power states are detailed in the "Power Requirements" table (Page 6), where PSLEEP = 1mW and PNAP = 75mW are explicitly listed for all three variants including LTC2170-14.
LTC2170IUKG-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):
- 25M
- 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:
- -
LTC2170IUKG-14#TRPBF FAQ
1.How can I place an order for LTC2170IUKG-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2170IUKG-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 LTC2170IUKG-14#TRPBF reliable?
The price and inventory of LTC2170IUKG-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 LTC2170IUKG-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2170IUKG-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2170IUKG-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2170IUKG-14#TRPBF?
LTC2170IUKG-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2170IUKG-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 LTC2170IUKG-14#TRPBF?
For technical support, including LTC2170IUKG-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2170IUKG-14#TRPBF requirements.
6.How does Aetrix verify that LTC2170IUKG-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2170IUKG-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 LTC2170IUKG-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2170IUKG-14#TRPBF?
All LTC2170IUKG-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2170IUKG-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 LTC2170IUKG-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2170IUKG-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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