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Analog Devices Inc. LTC2164IUK#PBF
- Part No.:
- LTC2164IUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2164IUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:348
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Product details
Overview
LTC2164IUK#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 105Msps low-power analog-to-digital converter optimized for undersampling wideband IF signals in communications infrastructure. It delivers 76.7dB SNR, 90dB SFDR, and ultralow 0.09psRMS jitter at –40°C to +85°C, enabling high-fidelity digitization in cellular base stations and software-defined radios.
For engineers reviewing the LTC2164IUK#PBF datasheet, LTC2164IUK#PBF pinout, LTC2164IUK#PBF application, or LTC2164IUK#PBF equivalent, key selection criteria include its 105Msps sampling rate, dual-supply 1.8V analog / 1.2–1.8V digital output flexibility, differential clock input support, and QFN-48 package with exposed thermal pad.
Technical Context
The LTC2164IUK#PBF employs a pipeline ADC architecture with integrated sample-and-hold (550MHz full-power bandwidth) and configurable digital outputs-full-rate CMOS, DDR CMOS, or DDR LVDS. Its optional clock duty cycle stabilizer maintains performance across non-50% duty cycle clocks, while serial SPI configuration enables runtime mode selection.
It supports both internal and external reference modes via SENSE pin (0.625V–1.3V), offers programmable input range (1–2VP-P), and includes power-saving Nap (10mW) and Sleep (1mW) modes. The device uses differential analog inputs (AIN+/AIN–) referenced to VCM (VDD/2) and features on-chip termination for LVDS outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over temperature - guarantees monotonicity and full dynamic range utilization. |
| Sampling Rate | 105Msps - supports Nyquist-sampled baseband or undersampled IF signals up to ~50MHz with adequate alias rejection. |
| SNR | 76.7dB (typ, 70MHz input) - enables >12.5 effective bits for high-fidelity signal capture in demanding RF receivers. |
| SFDR | 90dB (typ, 2nd/3rd harmonic, 70MHz input) - suppresses spurious content critical for multi-carrier cellular and radar applications. |
| Jitter | 0.09psRMS (differential encode) - minimizes aperture uncertainty, preserving SNR when undersampling GHz-range IFs. |
| Power Dissipation | 163mW (LVDS mode, 105Msps) - balances performance and thermal management in dense RF front-end layouts. |
| INL / DNL | ±2LSB / ±0.5LSB (typ) - ensures accurate amplitude linearity for measurement and calibration-critical systems. |
Pinout & Package
Package: 48-lead (7mm × 7mm) plastic QFN with exposed thermal pad (Pin 49 = GND), θJA = 29°C/W, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCM (1) | Analog common-mode bias output | Nominally VDD/2; used to bias AIN+/AIN– differential pair - requires 0.1µF bypass to GND for noise immunity. |
| AIN+ / AIN– (2,3) | Differential analog input terminals | Accept 1–2VP-P differential signal; high CMRR (80dB) rejects common-mode noise in RF environments. |
| ENC+ / ENC– (15,16) | Differential encode clock inputs | Support PECL/LVDS/TTL/CMOS; falling edge on ENC– triggers conversion - enables precise timing control. |
| PAR/SER (9) | Programming mode select | Ground = serial SPI interface; VDD = parallel logic control - determines register access method and feature set. |
| D0–D15 (21–24,36–40) | Data output terminals | Configurable as full-rate CMOS, DDR CMOS, or DDR LVDS - allows interface matching to FPGA/ASIC I/O standards. |
| OVDD (32) | Digital output supply | 1.2–1.8V programmable - sets CMOS swing or LVDS current mode (1.75/3.5mA); decoupling critical for signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Optional clock duty cycle stabilizer | Maintains full 105Msps performance with clock duty cycles from 30% to 70%, eliminating need for external clock conditioning circuits. |
| Selectable input voltage range | 1VP-P to 2VP-P via REFH/REFL pins - simplifies front-end gain staging without redesigning analog signal chain. |
| Serial SPI configuration port | Enables runtime reconfiguration of output mode, randomizer, nap/sleep, and clock options - supports adaptive system-level power management. |
| On-chip LVDS termination | 100Ω differential termination enabled by OVDD - removes need for external resistors, reducing BOM count and PCB area in high-speed layouts. |
| Low-power Nap and Sleep modes | 10mW and 1mW dissipation respectively - extends uptime in battery-backed or thermally constrained portable medical and test equipment. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
Use Scenario: Digitizing 70MHz LTE carrier signals with adjacent channel interference. IC Role / Device Role / Timing Role: High-SFDR ADC capturing wide instantaneous bandwidth for real-time FFT processing in remote radio heads. Use Value: 90dB SFDR prevents intermodulation distortion masking weak adjacent channels; 0.09psRMS jitter preserves EVM under undersampling. | Use Scenario: Reconfigurable IF sampling in military/commercial SDR transceivers operating across 20–100MHz bands. IC Role / Device Role / Timing Role: Programmable ADC core supporting multiple modulation schemes via SPI-controlled output and clock modes. Use Value: DDR LVDS outputs interface directly to Xilinx Kintex-7 FPGA; Nap mode reduces idle power during frequency hopping. |
| Portable Ultrasound Imaging | Multichannel Data Acquisition |
Use Scenario: Beamforming front-end digitizing 5–15MHz echo return signals from piezoelectric transducers. IC Role / Device Role / Timing Role: Low-noise, low-power ADC enabling high-resolution B-mode imaging in handheld devices. Use Value: 76.7dB SNR resolves fine tissue structures; 163mW total power allows integration into compact, fanless enclosures. | Use Scenario: Simultaneous sampling of 8–16 sensor channels (vibration, strain, temperature) in industrial predictive maintenance systems. IC Role / Device Role / Timing Role: Precision ADC providing synchronized, calibrated measurements across distributed analog inputs. Use Value: ±2LSB INL ensures traceable accuracy across channels; SPI interface enables centralized calibration and fault reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9268BCPZ-105 | 16-bit, 105Msps; JESD204B serial output; higher power (340mW); no internal reference | Requires external clock jitter cleaner and reference IC; suited for JESD204B-based FPGA platforms | Choose when system-level data transport demands deterministic latency and lane aggregation over parallel CMOS/LVDS. |
| ADS54J60IRGCT | 16-bit, 500Msps; single-supply 1.8V; higher SFDR (92dB); larger 64-QFN package | Over-spec'd for 105Msps use case; adds complexity in layout and power delivery | Consider only if future upgrade path to >200Msps sampling is required and board space allows larger footprint. |
Compared with AD9268BCPZ-105 and ADS54J60IRGCT, the LTC2164IUK#PBF provides optimal balance of SNR, SFDR, and power at 105Msps with minimal external components - ideal for cost-sensitive, thermally constrained, and layout-constrained RF receiver designs.
Availability
LTC2164IUK#PBF is available at Aetrix Electronics and suitable for cellular base station receivers, software-defined radios, and portable medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2164IUK#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving aerospace, industrial, automotive, and communications markets.
The LTC2164IUK#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for undersampling RF receivers where jitter, linearity, and power efficiency are critical in base station, defense, and test equipment applications.
FAQ
What is the maximum sampling rate supported by the LTC2164IUK#PBF?
The LTC2164IUK#PBF supports a maximum sampling rate of 105Msps, as specified in its ordering part number and confirmed in the Electrical Characteristics table. This rate is guaranteed across the full industrial temperature range (–40°C to +85°C) with appropriate power supply decoupling and clock signal integrity. Operation above this rate is not characterized and may result in degraded AC performance or functional failure.
Does the LTC2164IUK#PBF support both internal and external voltage references?
Yes, the LTC2164IUK#PBF supports both internal and external reference configurations. When using the internal reference, VREF outputs 1.25V (±25ppm/°C drift). For external reference mode, the SENSE pin accepts 0.625V–1.3V, allowing precise scaling of the input range. The LTC2164IUK#PBF's datasheet specifies separate INL, SNR, and SFDR performance for each mode, confirming full functionality in either configuration.
Can the LTC2164IUK#PBF operate with a single-ended clock input?
Yes, the LTC2164IUK#PBF supports single-ended clock operation: tie ENC– to GND and drive ENC+ with a 1.8V square wave or sine wave. The datasheet specifies VIH/VIL thresholds (1.2V/0.6V at VDD = 1.8V) and guarantees 0.09psRMS jitter in this mode. However, differential clocking is recommended for best jitter performance and noise immunity in RF-intensive environments.
What digital output interface options does the LTC2164IUK#PBF provide?
The LTC2164IUK#PBF offers three configurable digital output interfaces: full-rate CMOS, double-data-rate (DDR) CMOS, and DDR LVDS. Output mode is selected via PAR/SER and SCK pins in parallel mode or through SPI registers in serial mode. OVDD voltage (1.2–1.8V) sets CMOS swing, while LVDS mode enables on-chip 100Ω termination - all options are fully supported and characterized for the LTC2164IUK#PBF.
Is the exposed thermal pad (Pin 49) of the LTC2164IUK#PBF required to be connected to ground?
Yes, the exposed thermal pad (Pin 49) of the LTC2164IUK#PBF must be soldered to the PCB ground plane. The datasheet explicitly states "EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB" and specifies θJA = 29°C/W assuming proper thermal connection. Failure to connect this pad degrades thermal performance, risks exceeding TJMAX = 150°C, and may cause parametric shift or premature failure under sustained 105Msps operation.
LTC2164IUK#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 105M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2164IUK#PBF FAQ
1.How can I place an order for LTC2164IUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2164IUK#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 LTC2164IUK#PBF reliable?
The price and inventory of LTC2164IUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2164IUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2164IUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2164IUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2164IUK#PBF?
LTC2164IUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2164IUK#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 LTC2164IUK#PBF?
For technical support, including LTC2164IUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2164IUK#PBF requirements.
6.How does Aetrix verify that LTC2164IUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2164IUK#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 LTC2164IUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2164IUK#PBF?
All LTC2164IUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2164IUK#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 LTC2164IUK#PBF part is unused and in its original packaging.
Return procedure for LTC2164IUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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