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Analog Devices Inc. LTC2195IUKG#PBF
- Part No.:
- LTC2195IUKG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2195IUKG#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,711
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Product details
Overview
LTC2195IUKG#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 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 LTC2195IUKG#PBF datasheet, LTC2195IUKG#PBF pinout, LTC2195IUKG#PBF application, or LTC2195IUKG#PBF equivalent, key selection criteria include guaranteed ±2LSB INL over –40°C to +85°C, serial LVDS output flexibility (1/2/4 bits per channel), single 1.8V supply operation, and integrated clock duty cycle stabilizer for robust encode timing across varying input waveforms.
Technical Context
The LTC2195IUKG#PBF implements two independent 16-bit ADC cores with shared reference and clocking resources, supporting true simultaneous sampling critical for I/Q demodulation and multi-channel phase-coherent acquisition. Its analog front-end features 550MHz S/H bandwidth, programmable input range (1–2VP-P), and differential input architecture with ±10µV/°C offset drift.
Digital interface uses serialized LVDS outputs with configurable lane count (1/2/4) and current levels (1.75mA/3.5mA), internal 100Ω termination, and frame/data clock outputs synchronized to sample edges. Configuration is handled via SPI-compatible serial port or parallel logic inputs depending on PAR/SER pin state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over temperature - ensures monotonicity and full dynamic range utilization in precision measurement. |
| Sampling Rate | 125Msps maximum - supports Nyquist sampling of signals up to 62.5MHz or undersampling of IF bands up to 550MHz. |
| SNR / SFDR | 76.8dB SNR and 90dB SFDR at 70MHz input - enables high-fidelity digitization of weak signals amid strong interferers in SDR and medical imaging. |
| Jitter Performance | 0.07psRMS aperture jitter - minimizes noise floor degradation when undersampling RF/IF frequencies. |
| Power Consumption | 432mW total at 125Msps (216mW per channel) - balances performance and thermal management in dense RF front-ends. |
| Analog Supply | Single 1.8V (1.7–1.9V) VDD - simplifies power delivery and reduces board-level DC-DC complexity. |
| Operating Temperature | –40°C to +85°C (Industrial grade) - qualified for deployment in outdoor base stations and portable diagnostic equipment. |
Pinout & Package
52-pin (7mm × 8mm) plastic QFN package with exposed thermal pad (Pin 53 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCM1 (1), VCM2 (14) | Common-mode bias outputs | Nominally VDD/2; used to set input common-mode voltage for Channel 1 and Channel 2 analog inputs respectively. |
| AIN1+/AIN1– (3/4), AIN2+/AIN2– (11/12) | Differential analog inputs | High-impedance, 550MHz bandwidth inputs accepting 1–2VP-P differential signals with >80dB CMRR. |
| ENC+/ENC– (17/18) | Encode clock inputs | Accept differential (LVDS/PECL) or single-ended (TTL/CMOS) clocks; internal duty cycle stabilizer maintains performance across 2–100% duty cycles. |
| OUT1A± to OUT1D± (37–44), OUT2A± to OUT2D± (23–30) | Serialized LVDS data outputs | Four differential pairs per channel; only active lanes driven based on selected serialization mode (1/2/4-lane). |
| FR± (31/32), DCO± (35/36) | Frame start and data clock outputs | Synchronized LVDS outputs indicating frame boundaries and bit-clock timing for deterministic data capture. |
| PAR/SER (10), CS/SCK/SDI/SDO (19–21,46) | Configuration interface | Selects serial (SPI-like) or parallel programming mode; controls output lane count, current level, reference mode, and power states. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Enables coherent I/Q sampling and time-aligned multi-channel acquisition without inter-channel skew. |
| Programmable LVDS serialization (1/2/4 bits per channel) | Reduces interface pin count and PCB routing complexity while maintaining 1Gbps aggregate data rate. |
| Internal clock duty cycle stabilizer | Eliminates external clock conditioning circuitry and ensures consistent sampling aperture timing across diverse clock sources. |
| Shutdown and Nap modes | Reduces power to 1mW (shutdown) or 50mW (Nap) - extends battery life in portable medical and test equipment. |
| Flexible reference configuration | Supports internal (±0.5V/±1V) or external (0.625–1.3V) reference via SENSE pin - adapts input range to system signal chain requirements. |
Applications
| Cellular Base Station Receiver | Software-Defined Radio (SDR) Front-End |
|---|---|
Use Scenario: Digitizing 70MHz IF signals from RF downconverters in macrocell and small-cell BTS. IC Role / Device Role / Timing Role: Dual-channel ADC capturing I/Q data streams with <1ps inter-channel skew for accurate complex baseband reconstruction. Use Value: 90dB SFDR suppresses adjacent-channel interference; 0.07psRMS jitter preserves EVM in 256-QAM transmission. |
Use Scenario: Wideband spectrum sensing and real-time signal analysis in field-deployable SDR platforms. IC Role / Device Role / Timing Role: High-speed digitizer feeding FPGA-based digital downconversion and modulation analysis blocks. Use Value: 550MHz full-power bandwidth enables direct sampling of L-band and S-band signals without analog preselection. |
| Portable Ultrasound Imaging | Multi-Channel Data Acquisition System |
Use Scenario: Beamforming receive path in handheld ultrasound probes requiring compact, low-power digitization. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple transducer elements with matched gain/offset for coherent beam synthesis. Use Value: ±2LSB INL and ±0.5LSB DNL ensure spatial resolution fidelity; 432mW total power enables battery-operated operation. |
Use Scenario: High-precision test instrumentation capturing transient waveforms across 8+ channels with synchronized triggers. IC Role / Device Role / Timing Role: Dual ADC providing two independent 16-bit acquisition paths with deterministic pipeline latency (7 cycles). Use Value: Guaranteed no missing codes and 3.4LSBRMS transition noise support accurate amplitude measurement of low-level sensor outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 16-bit, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9653BCPZ-125 | 16-bit, 125Msps, dual-channel; requires separate 3.3V and 1.8V supplies; no integrated duty cycle stabilizer. | Higher power (750mW); less tolerant of asymmetric clock duty cycles; requires external reference buffer. | Preferred where legacy ADI ecosystem integration or JESD204B interface is required; not drop-in compatible. |
| ADS52J90IRGCT | 16-bit, 100Msps, quad-channel; uses parallel CMOS outputs (not LVDS); supports JESD204B subclass 1. | Lower sampling rate; higher channel count but no simultaneous dual sampling guarantee; larger 64-pin QFN package. | Selected for multi-channel systems needing >2 channels; incompatible pinout and interface protocol. |
Compared with AD9653BCPZ-125 and ADS52J90IRGCT, the LTC2195IUKG#PBF offers superior jitter performance (0.07psRMS vs ≥0.15ps), lower power at full speed, and built-in clock conditioning-making it optimal for undersampling architectures where clock purity and thermal efficiency are critical.
Availability
LTC2195IUKG#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, portable medical imaging, and software-defined radio applications requiring stable component supply, long-term industrial temperature support, and traceable sourcing.
Supply support for LTC2195IUKG#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 digital signal processing technologies.
The LTC2195IUKG#PBF belongs to Linear's high-speed ADC product line, designed specifically for demanding communications and instrumentation applications requiring exceptional dynamic range, low jitter, and flexible digital interfacing.
FAQ
What is the maximum sampling rate supported by the LTC2195IUKG#PBF?
The LTC2195IUKG#PBF supports a maximum sampling rate of 125Msps, which is its designated speed grade. This is confirmed in the "CONVERTER CHARACTERISTICS" table under fS (Sampling Frequency) for the LTC2195 variant. Operation at this rate requires proper thermal management due to its 432mW power dissipation and adherence to recommended layout practices for the 52-pin QFN package.
Does the LTC2195IUKG#PBF support single-ended analog inputs?
No, the LTC2195IUKG#PBF is designed exclusively for differential analog inputs (AIN1+/AIN1– and AIN2+/AIN2–). The datasheet specifies common-mode rejection ratio (CMRR) and input specifications only for differential drive, and the analog input structure relies on balanced signaling for optimal SNR and SFDR. Single-ended input configurations are not characterized or supported.
How does the PAR/SER pin affect the functionality of the LTC2195IUKG#PBF?
The PAR/SER pin (Pin 10) selects between serial and parallel programming modes. When tied to GND, it enables SPI-compatible serial configuration (CS/SCK/SDI/SDO function as control interface). When tied to VDD, it enables parallel mode where CS/SCK configure output lane count and SDI controls power-down-eliminating need for a microcontroller in fixed-function systems. This pin must be hard-wired, not dynamically driven.
Can the LTC2195IUKG#PBF operate with an external reference voltage?
Yes, the LTC2195IUKG#PBF supports external reference operation. Applying a voltage between 0.625V and 1.3V to the SENSE pin configures the input range to ±0.8 × VSENSE. The device retains its specified INL/DNL and dynamic performance when used with a low-noise, stable external reference, as validated in the "INTERNAL REFERENCE CHARACTERISTICS" and "ANALOG INPUT" sections of the datasheet.
What is the purpose of the FR± and DCO± outputs on the LTC2195IUKG#PBF?
The FR± (Frame) and DCO± (Data Clock Output) pins provide LVDS-synchronized timing signals to the receiving logic. FR± asserts at the start of each data frame (aligned to sample N), while DCO± toggles at the serial bit rate (e.g., 250MHz for 2-lane mode at 125Msps). These signals eliminate setup/hold uncertainty in FPGA or ASIC capture logic, ensuring deterministic alignment of serialized data words to sample epochs.
LTC2195IUKG#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2195IUKG#PBF FAQ
1.How can I place an order for LTC2195IUKG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2195IUKG#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 LTC2195IUKG#PBF reliable?
The price and inventory of LTC2195IUKG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2195IUKG#PBF is usually 5 days.
3.What payment methods are accepted for LTC2195IUKG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2195IUKG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2195IUKG#PBF?
LTC2195IUKG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2195IUKG#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 LTC2195IUKG#PBF?
For technical support, including LTC2195IUKG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2195IUKG#PBF requirements.
6.How does Aetrix verify that LTC2195IUKG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2195IUKG#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 LTC2195IUKG#PBF meets industry standards.
7.What is the process for return or replacement of LTC2195IUKG#PBF?
All LTC2195IUKG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2195IUKG#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 LTC2195IUKG#PBF part is unused and in its original packaging.
Return procedure for LTC2195IUKG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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