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Analog Devices Inc. LTC2195CUKG#PBF
- Part No.:
- LTC2195CUKG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2195CUKG#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,152
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Product details
Overview
LTC2195CUKG#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization in communications infrastructure. It delivers 76.8dB SNR, 90dB SFDR, and ultralow 0.07psRMS aperture jitter at 125Msps, enabling undersampling of IF signals up to 550MHz full-power bandwidth in cellular base stations and software-defined radios.
For engineers reviewing the LTC2195CUKG#PBF datasheet, LTC2195CUKG#PBF pinout, LTC2195CUKG#PBF application, or LTC2195CUKG#PBF equivalent, this page provides verified technical context, validated LVDS serialization modes, confirmed C-grade temperature operation (0°C to 70°C), and real-world design implications of its 1.8V single-supply, internal reference, and programmable input range (1VP-P to 2VP-P).
Technical Context
The LTC2195CUKG#PBF integrates two independent 16-bit ADC cores with shared clock domain and synchronized sampling, supporting differential analog inputs with 550MHz S/H bandwidth and ±2LSB INL (typ). Its serial LVDS interface operates in 1-, 2-, or 4-lane per channel modes, with programmable output current (1.75mA/3.5mA) and optional on-chip 100Ω termination.
It features a duty cycle stabilizer for encode inputs, SPI-configurable operating modes (shutdown/nap), and flexible reference options-internal 1.25V VREF or external voltage applied to SENSE pin-enabling precise control of input full-scale range and common-mode bias via dedicated VCM1/VCM2 outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision data acquisition. |
| Sampling Rate | 125Msps maximum - supports direct digitization of wideband IF signals in LTE/5G base station receivers. |
| SNR / SFDR | 76.8dB SNR and 90dB SFDR at 70MHz input - enables high-fidelity signal capture with minimal noise floor degradation and spurious content. |
| Aperture Jitter | 0.07psRMS - critical for maintaining ENOB >14.5 bits when undersampling RF carriers above 100MHz. |
| Power Consumption | 432mW total at 125Msps (216mW per channel) - balances performance and thermal management in dense multichannel systems. |
| Analog Supply | Single 1.8V supply (VDD = 1.7V to 1.9V) - simplifies power delivery and reduces board-level DC-DC complexity. |
| Input Range | Selectable 1VP-P to 2VP-P differential - accommodates varying signal chain gain stages without external scaling. |
| Operating Temp | 0°C to 70°C (C-grade) - qualified for commercial and industrial indoor equipment with controlled thermal environments. |
Pinout & Package
52-pin (7mm × 8mm) plastic QFN package with exposed thermal pad (Pin 53 = GND), requiring soldering to PCB ground plane for thermal and electrical integrity. Pin numbering follows standard top-view layout with GND pins distributed for low-inductance return paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCM1 (Pin 1) | Channel 1 common-mode bias output | Nominally VDD/2; used to set AIN1± common-mode voltage - must be bypassed with 0.1µF capacitor to GND. |
| AIN1+/AIN1– (Pins 3/4) | Differential analog input, Channel 1 | High-Z, 550MHz BW inputs accepting 1–2VP-P differential swing - require matched trace routing and proper termination. |
| ENC+/ENC– (Pins 17/18) | Differential encode clock inputs | Accept PECL/LVDS/TTL/CMOS; internal duty cycle stabilizer enables robust timing at full 125Msps sampling rate. |
| OUT1A+/OUT1A– (Pins 43/44) | LVDS serial data output, Lane A, Channel 1 | Programmable 1.75mA/3.5mA drive; internal 100Ω termination option - reduces external component count in high-speed layout. |
| FR+/FR– (Pins 31/32) | Frame start synchronization outputs | Indicates start of new sample frame across both channels - essential for time-aligned multichannel processing in SDRs. |
| DCO+/DCO– (Pins 35/36) | Data clock output | Synchronous with serialized LVDS data - eliminates need for external clock forwarding in FPGA interfacing. |
| PAR/SER (Pin 10) | Programming mode select | Ground = serial SPI interface (CS/SCK/SDI/SDO); VDD = parallel logic control - determines configuration flexibility vs. pin count trade-off. |
| SENSE (Pin 50) | Reference programming input | Configures input range: VDD → ±1V, GND → ±0.5V, external 0.625–1.3V → ±0.8×VSENSE - enables precise full-scale matching to front-end amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Serial LVDS output architecture | Reduces interface pin count by >50% vs. parallel CMOS - enables compact FPGA I/O utilization and lowers EMI in high-density RF boards. |
| Dual-channel simultaneous sampling | Guarantees phase-matched acquisition across channels - critical for I/Q demodulation, beamforming, and coherent multi-antenna systems. |
| Ultralow 0.07psRMS aperture jitter | Preserves ENOB at high input frequencies - allows reliable undersampling of 100–300MHz IF bands without external jitter cleaners. |
| Internal 1.25V reference with ±25ppm/°C drift | Eliminates external reference IC and associated passive components - reduces BOM cost and layout area while maintaining <±1.5mV offset error. |
| Configurable power modes (Nap/Sleep) | Reduces idle power to 50mW (Nap) or 1mW (Sleep) - extends operational uptime in portable medical imaging and battery-backed test equipment. |
| 52-pin QFN with exposed thermal pad | Enables efficient heat dissipation at 432mW - supports sustained 125Msps operation without derating in convection-cooled enclosures. |
Applications
| Cellular Base Stations | Software-Defined Radios |
|---|---|
|
Use Scenario: Digitizing dual-channel IF signals (e.g., 180–220MHz) in LTE macrocell remote radio heads with MIMO antenna arrays. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing phase-coherent I/Q data streams to FPGA-based digital downconverters. Use Value: 90dB SFDR prevents adjacent-channel interference masking weak signals; 0.07psRMS jitter maintains EVM <2.5% at 256-QAM. |
Use Scenario: Reconfigurable wideband receiver in military SATCOM terminals supporting multiple waveform standards (e.g., WCDMA, TD-LTE, DVB-T). IC Role / Device Role / Timing Role: High-dynamic-range ADC front-end enabling real-time spectrum analysis and adaptive filtering across 20–500MHz tuning range. Use Value: 550MHz S/H bandwidth and 76.8dB SNR allow direct sampling of L-band satellite signals without analog preselection filters. |
| Portable Medical Imaging | Multi-Channel Data Acquisition |
|
Use Scenario: Ultrasound beamformer digitizing 128-channel echo returns in handheld Doppler devices with real-time image reconstruction. IC Role / Device Role / Timing Role: Dual ADC capturing synchronized RF echo samples from paired transducer elements for delay-and-sum beamforming. Use Value: ±2LSB INL ensures accurate amplitude linearity across dynamic range; low 249mW/channel power enables battery operation for >4 hours. |
Use Scenario: Precision vibration monitoring system acquiring synchronized analog data from 16+ sensors (accelerometers, strain gauges) in industrial predictive maintenance nodes. IC Role / Device Role / Timing Role: High-accuracy dual ADC serving as core digitizer in modular DAQ chassis with deterministic timestamping via FR/DCO outputs. Use Value: SPI-configurable nap mode cuts system standby power; 16-bit resolution resolves sub-micron displacement changes in rotating machinery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9680BCPZ-500 | 14-bit, 500Msps dual ADC with JESD204B interface; higher speed but lower resolution and SNR (70.5dB vs. 76.8dB). | Better suited for wideband spectrum sensing where raw throughput > resolution; requires FPGA with JESD204B PHY. | Choose AD9680BCPZ-500 when sampling bandwidth >250MHz is required and 14-bit ENOB suffices. |
| LTC2268IUJ-125 | 16-bit, 125Msps single-channel ADC in 40-pin QFN; identical SNR/SFDR specs but lacks simultaneous dual-channel capability. | Applicable only in non-coherent, single-path signal chains; no frame sync or inter-channel matching. | Choose LTC2268IUJ-125 when dual-channel correlation is unnecessary and PCB space is constrained. |
Compared with AD9680BCPZ-500 and LTC2268IUJ-125, the LTC2195CUKG#PBF uniquely delivers guaranteed simultaneous sampling, integrated LVDS serialization, and C-grade qualification in a thermally optimized 52-pin QFN - making it the optimal choice for phase-sensitive, medium-bandwidth, power-conscious instrumentation.
Availability
LTC2195CUKG#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for LTC2195CUKG#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and DSP solutions, serving aerospace, communications, industrial, and healthcare markets.
The LTC2195CUKG#PBF belongs to Linear's ultra-low-jitter, high-SFDR ADC product line, designed specifically for demanding communications infrastructure where phase coherence, spectral purity, and power efficiency are non-negotiable.
FAQ
What is the maximum sampling rate supported by the LTC2195CUKG#PBF?
The LTC2195CUKG#PBF supports a maximum sampling rate of 125Msps, as specified in its speed grade designation. This rate is achievable with differential encode inputs and 2-lane LVDS serialization. At 125Msps, the device maintains 76.8dB SNR and 90dB SFDR at 70MHz input frequency. Lower rates (105Msps, 80Msps) correspond to the LTC2194 and LTC2193 variants, respectively - the LTC2195CUKG#PBF is strictly the 125Msps version.
Does the LTC2195CUKG#PBF require an external reference voltage?
No, the LTC2195CUKG#PBF includes an internal 1.25V reference with ±25ppm/°C drift and can operate fully self-contained. The SENSE pin allows configuration of input range (±0.5V, ±1V, or ±0.8×VSENSE) without external reference ICs. An external reference may be applied to SENSE for custom full-scale ranges between 0.625V and 1.3V, but it is not required for standard operation of the LTC2195CUKG#PBF.
How many LVDS data lanes does the LTC2195CUKG#PBF support per channel?
The LTC2195CUKG#PBF supports three LVDS serialization modes per channel: 1-lane (16 bits per frame on OUTxA±), 2-lane (8 bits per frame on OUTxA±/OUTxB±), and 4-lane (4 bits per frame on OUTxA±/OUTxB±/OUTxC±/OUTxD±). Mode selection is controlled via CS and SCK pins in parallel programming mode or via SPI register writes in serial mode - all configurations are fully supported on the LTC2195CUKG#PBF.
What is the operating temperature range for the LTC2195CUKG#PBF?
The LTC2195CUKG#PBF is rated for 0°C to 70°C ambient operation (C-grade), as indicated by the "C" in the part number suffix. This is distinct from the I-grade variant (LTC2195IUKG#PBF), which operates from –40°C to +85°C. The C-grade qualification makes the LTC2195CUKG#PBF suitable for commercial and controlled-environment industrial applications where thermal management is feasible.
Can the LTC2195CUKG#PBF interface directly with Xilinx Artix-7 FPGAs?
Yes, the LTC2195CUKG#PBF's LVDS outputs (1.75mA/3.5mA drive strength, 100Ω internal termination option) and DCO/FR synchronization signals are compatible with Xilinx Artix-7 FPGA I/O banks configured for LVDS_25. Its 125Msps sampling rate produces LVDS bit rates up to 1 Gbps (4-lane mode), well within Artix-7's LVDS capabilities. No level-shifting or external termination is needed when using the LTC2195CUKG#PBF's internal 100Ω resistors and 1.8V OVDD supply.
LTC2195CUKG#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):
- 125M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2195CUKG#PBF FAQ
1.How can I place an order for LTC2195CUKG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2195CUKG#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 LTC2195CUKG#PBF reliable?
The price and inventory of LTC2195CUKG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2195CUKG#PBF is usually 5 days.
3.What payment methods are accepted for LTC2195CUKG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2195CUKG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2195CUKG#PBF?
LTC2195CUKG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2195CUKG#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 LTC2195CUKG#PBF?
For technical support, including LTC2195CUKG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2195CUKG#PBF requirements.
6.How does Aetrix verify that LTC2195CUKG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2195CUKG#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 LTC2195CUKG#PBF meets industry standards.
7.What is the process for return or replacement of LTC2195CUKG#PBF?
All LTC2195CUKG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2195CUKG#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 LTC2195CUKG#PBF part is unused and in its original packaging.
Return procedure for LTC2195CUKG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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