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Analog Devices Inc. LTC2164CUK#PBF
- Part No.:
- LTC2164CUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2164CUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:139
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Product details
Overview
LTC2164CUK#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 105Msps low-power analog-to-digital converter optimized for undersampling high-frequency IF signals in communications infrastructure. It delivers 76.7dB SNR, 90dB SFDR, and ultralow 0.09psRMS jitter at full speed, with ±2LSB INL and ±0.5LSB DNL over temperature. Its dual-supply architecture (1.8V VDD, 1.2–1.8V OVDD), 550MHz full-power bandwidth, and support for CMOS/DDR-CMOS/DDR-LVDS outputs make it suitable for cellular base station receivers and software-defined radios.
For engineers reviewing the LTC2164CUK#PBF datasheet, LTC2164CUK#PBF pinout, LTC2164CUK#PBF application, or LTC2164CUK#PBF equivalent, this page provides verified technical context on its sampling architecture, clock interface flexibility (differential/single-ended ENC±, optional duty cycle stabilizer), output configuration options, and validated alternatives for 105Msps 16-bit ADC migration paths.
Technical Context
The LTC2164CUK#PBF implements a pipeline ADC core with integrated sample-and-hold and digital output drivers supporting three modes: full-rate CMOS, double-data-rate CMOS, and double-data-rate LVDS. Its clock input accepts differential (ENC+/ENC−) or single-ended (ENC+ to GND) drive with programmable duty cycle stabilization, enabling robust operation across wide input duty cycles without external conditioning.
It features a 1.25V internal reference (±25ppm/°C drift), configurable analog input range (1–2VP-P), and serial SPI port for mode control including shutdown, nap, data randomization, and output format selection. The device operates over 0°C to 70°C and draws 163mW typical power at 105Msps with DDR-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 in precision measurement systems. |
| Sampling Rate | 105Msps - enables digitization of wideband IF signals up to ~52.5MHz Nyquist zone without aliasing in direct-conversion receivers. |
| SNR / SFDR | 76.7dB SNR and 90dB SFDR at 70MHz input - supports high-order QAM demodulation in LTE/5G base stations with minimal quantization noise floor degradation. |
| Jitter Performance | 0.09psRMS aperture jitter - limits sampling uncertainty to <0.1% of LSB at 105Msps, critical for maintaining ENOB >12.5 bits in undersampling applications. |
| Power Consumption | 163mW typical at 105Msps with DDR-LVDS outputs - reduces thermal load and simplifies PCB layout in dense RF front-end modules. |
| Analog Input BW | 550MHz full-power bandwidth - preserves signal integrity for wideband modulated waveforms with fast slew rates, such as OFDM carriers. |
| Digital Interface | Configurable CMOS/DDR-CMOS/DDR-LVDS outputs with separate OVDD supply (1.2–1.8V) - allows seamless interfacing with FPGA I/O banks operating at different voltage levels. |
Pinout & Package
48-lead (7mm × 7mm) plastic QFN package with exposed thermal pad (Pin 49 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCM (1) | Analog common-mode bias output | Provides stable 0.5×VDD reference for differential input termination; must be bypassed with 0.1µF capacitor to minimize noise coupling into AIN+/AIN−. |
| AIN+ / AIN− (2,3) | Differential analog input pair | Accepts 1–2VP-P differential signal; high CMRR (80dB) rejects common-mode noise from RF front-end stages. |
| REFH / REFL (5,6,7,8) | ADC reference voltage terminals | Support internal or external reference configurations; REFL pins connect to ground when using internal reference, REFH to VREF output. |
| ENC+ / ENC− (15,16) | Differential encode clock inputs | Trigger conversion on rising/falling edges; ENC− tied to GND enables single-ended operation compatible with TTL/CMOS clocks. |
| CS / SCK / SDI / SDO (17–19,44) | SPI serial programming interface | Configures output mode, power states, and features; SDO is open-drain requiring 2kΩ pull-up if readback is used. |
| OVDD (32) | Digital output supply | Independent 1.2–1.8V supply sets CMOS output swing or enables LVDS current-mode driver; decoupling with 0.1µF ceramic required. |
| VREF (45) | Internal reference output | 1.25V ±1.2% output with 7Ω source impedance; requires 2.2µF ceramic bypass for stability in precision ADC applications. |
Key Features
| Feature | Design Value |
|---|---|
| Optional clock duty cycle stabilizer | Enables high-performance sampling with non-50% duty cycle clocks (e.g., from PLLs or dividers), eliminating need for external clock conditioners. |
| Selectable input ranges (1–2VP-P) | Allows optimization of dynamic range for varying signal amplitudes without external gain stages, reducing component count in multi-channel receivers. |
| Data output randomizer | Reduces deterministic spectral spurs caused by periodic digital switching patterns, improving SFDR in narrowband communication standards. |
| Low-power sleep and nap modes | Reduces power to 1mW (sleep) or 10mW (nap) during idle periods - essential for power-sensitive portable medical imaging and battery-backed instrumentation. |
| 550MHz S/H bandwidth | Preserves fidelity of fast-rising RF pulses and wideband OFDM symbols without slew-induced distortion or settling errors. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing 70MHz IF signals from quadrature downconverters in macrocell LTE/5G base stations. IC Role / Device Role / Timing Role: High-speed ADC capturing wideband channelized signals with minimal noise floor elevation and harmonic distortion. Use Value: 90dB SFDR ensures adjacent-channel interference remains below –90dBc, meeting 3GPP ACLR requirements without additional analog filtering. |
Use Scenario: Reconfigurable IF sampling in military and test equipment SDR platforms supporting multiple waveform standards. IC Role / Device Role / Timing Role: Programmable ADC enabling real-time adaptation of sampling rate and input range via SPI to match diverse modulation bandwidths. Use Value: 16-bit resolution and 76.7dB SNR maintain >12-bit ENOB across 10–100MHz IF bands, preserving signal intelligence in wideband surveillance. |
| Portable Medical Ultrasound | Multichannel Data Acquisition |
|
Use Scenario: Beamforming digitization of 5–15MHz ultrasound echoes in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-power, high-linearity ADC converting analog beamformed signals with minimal added noise in battery-operated systems. Use Value: 163mW power at 105Msps and ±2LSB INL ensure thermal management feasibility and accurate tissue contrast representation in grayscale imaging. |
Use Scenario: Simultaneous sampling of multiple sensor channels (e.g., vibration, strain, temperature) in industrial predictive maintenance systems. IC Role / Device Role / Timing Role: Precision ADC providing synchronized, high-SFDR acquisition across parallel channels for FFT-based spectral analysis. Use Value: 550MHz input bandwidth supports anti-aliasing filter design with relaxed roll-off, reducing analog BOM cost while maintaining >100dB dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9268BCPZ-105 | 16-bit, 105Msps; 78.2dB SNR, 87dB SFDR; JESD204B serial interface; 1.8V only supply | Targets JESD204B FPGA interfaces; lacks CMOS/DDR-CMOS output flexibility and internal reference | Choose for space-constrained designs needing serialized data transport and lower pin count, accepting higher system-level complexity. |
| LTC2264IUJ#PBF | 16-bit, 105Msps; 76.5dB SNR, 89dB SFDR; 64-lead QFN; same family architecture but industrial temp grade (–40°C to 85°C) | Identical electrical specs and pinout; differs only in temperature rating and part marking | Choose for extended temperature deployments where industrial-grade qualification is mandatory, with no layout or firmware changes required. |
Compared with LTC2164CUK#PBF, AD9268BCPZ-105 offers superior SNR but requires JESD204B PHY implementation overhead, while LTC2264IUJ#PBF provides identical performance with guaranteed operation beyond 70°C-making it a drop-in replacement for harsh-environment deployments without sacrificing AC specs.
Availability
LTC2164CUK#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, portable medical imaging, and multichannel data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2164CUK#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, serving communications, industrial, automotive, and healthcare markets.
The LTC2164CUK#PBF belongs to Linear's ultra-low-jitter, low-power pipeline ADC product line, designed specifically for demanding undersampling applications in wireless infrastructure and high-fidelity instrumentation where SNR, SFDR, and thermal efficiency are critical.
FAQ
What is the maximum sampling frequency supported by the LTC2164CUK#PBF?
The LTC2164CUK#PBF supports a maximum sampling frequency of 105Msps, as specified in its datasheet under recommended operating conditions. This rate is guaranteed across the full 0°C to 70°C operating temperature range with all performance specifications-including 76.7dB SNR and 90dB SFDR-maintained at 70MHz input frequency. Operation above 105Msps is not characterized and may degrade AC performance or cause functional failure.
Does the LTC2164CUK#PBF require an external reference voltage?
No, the LTC2164CUK#PBF includes a precision internal 1.25V reference (VREF pin 45) with ±1.2% initial accuracy and ±25ppm/°C temperature drift, sufficient for most high-accuracy applications. An external reference can be applied via the SENSE pin (46) for improved stability or custom scaling, but it is not required. The internal reference is enabled by default when REFL pins are grounded.
Can the LTC2164CUK#PBF interface directly with a 1.2V FPGA I/O bank?
Yes, the LTC2164CUK#PBF supports 1.2V OVDD operation for its CMOS and DDR-CMOS output modes, delivering valid logic levels (VOH ≥1.185V, VOL ≤0.01V at 500µA) compatible with 1.2V LVTTL/LVCMOS FPGA inputs. For DDR-LVDS mode, OVDD must be 1.8V, and the 100Ω differential termination is provided on-chip, eliminating external resistors.
What power-saving modes does the LTC2164CUK#PBF offer, and how much power do they consume?
The LTC2164CUK#PBF offers two low-power states: Nap mode consumes 10mW and Sleep mode consumes 1mW. Both are activated via SPI register writes and retain register settings. Nap mode disables the ADC core but keeps the SPI interface active for rapid wake-up; Sleep mode powers down nearly all circuitry except basic bias generation. These modes are ideal for burst-mode acquisition in portable medical or IoT edge devices.
Is the LTC2164CUK#PBF pin-compatible with other members of the LTC216x family?
Yes, the LTC2164CUK#PBF shares identical 48-lead QFN packaging, pinout, and footprint with LTC2165CUK#PBF (125Msps) and LTC2163CUK#PBF (80Msps), enabling drop-in speed scalability within the same PCB layout. All share identical power, reference, clock, and SPI pin assignments; only sampling rate and associated AC specs differ-no hardware redesign is needed when migrating between variants.
LTC2164CUK#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2164CUK#PBF FAQ
1.How can I place an order for LTC2164CUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2164CUK#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 LTC2164CUK#PBF reliable?
The price and inventory of LTC2164CUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2164CUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2164CUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2164CUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2164CUK#PBF?
LTC2164CUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2164CUK#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 LTC2164CUK#PBF?
For technical support, including LTC2164CUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2164CUK#PBF requirements.
6.How does Aetrix verify that LTC2164CUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2164CUK#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 LTC2164CUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2164CUK#PBF?
All LTC2164CUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2164CUK#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 LTC2164CUK#PBF part is unused and in its original packaging.
Return procedure for LTC2164CUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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