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Analog Devices Inc. LTC2284IUP#PBF
- Part No.:
- LTC2284IUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2284IUP#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
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Product details
Overview
LTC2284IUP#PBF from Analog Devices (formerly Linear Technology) is a dual 14-bit, 105Msps low-power analog-to-digital converter operating from a single 3V supply. It delivers 72.4dB SNR and 88dB SFDR at Nyquist, with 110dB channel isolation at 100MHz and 575MHz full-power bandwidth - designed for high-fidelity digitization in broadband communications and imaging systems.
For engineers reviewing the LTC2284IUP#PBF datasheet, LTC2284IUP#PBF pinout, LTC2284IUP#PBF application, or LTC2284IUP#PBF equivalent, key selection considerations include dual-channel timing alignment, flexible ±0.5V to ±1V differential input range, clock duty cycle stabilization, and QFN-64 package thermal management with exposed ground pad soldering requirement.
Technical Context
The LTC2284IUP#PBF implements a six-stage pipelined ADC architecture with integrated sample-and-hold, internal 1.5V reference, and independent channel control logic. Each channel features dedicated REFH/REFL pairs, SENSE pins for input range programming, and separate SHDN/OE controls enabling independent nap/shutdown modes per channel.
It supports offset binary or 2's complement output formats via the MODE pin, includes a clock duty cycle stabilizer that maintains performance across 30%–70% duty cycles, and provides multiplexed or parallel digital output busing via the MUX pin - with pipeline latency fixed at five conversion cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete output codes for high dynamic range signal capture. |
| Sample Rate | 105Msps - enables real-time digitization of signals up to 52.5MHz (Nyquist), suitable for LTE, WiMAX, and ultrasound imaging front ends. |
| SNR | 72.4dBFS at 5MHz - corresponds to effective resolution of ~11.7 bits under typical conditions. |
| SFDR | 88dBc at 5MHz - ensures clean spectral representation with minimal harmonic contamination in IF sampling applications. |
| Channel Isolation | 110dB at 100MHz - prevents crosstalk-induced distortion when digitizing adjacent RF bands or dual-sensor inputs. |
| Power Dissipation | 540mW at 105Msps - enables thermally constrained designs using 9mm × 9mm QFN with θJA = 20°C/W. |
| Input Bandwidth | 575MHz - supports wideband IF sampling without external anti-alias filtering below 200MHz. |
Pinout & Package
Package: 64-lead (9mm × 9mm) plastic QFN with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+, AINA− (Pins 1, 2) | Channel A differential analog input | Accepts ±0.5V to ±1V differential swing; common-mode bias set by VCMA or external source. |
| CLKA, CLKB (Pins 8, 9) | Independent channel clock inputs | Positive-edge triggered; supports asynchronous or synchronized sampling; duty cycle stabilizer enabled via MODE pin. |
| DA0–DA13, DB0–DB13 (Pins 41–48, 51–56, 24–30, 33–39) | 14-bit parallel digital outputs per channel | MSB-first, LVCMOS-compatible; output voltage swing referenced to OVDD (0.5V–3.6V). |
| SENSEA, SENSEB (Pins 62, 19) | Input range programming inputs | Determines ±VSENSE full-scale range; connects to VCMA/VCMB for ±0.5V or VDD for ±1V internally referenced mode. |
| SHDNA, SHDNB (Pins 59, 22) | Per-channel shutdown control | Combination with OEA/OEB selects normal, nap (15mW/channel), or sleep (2mW/channel) power states. |
| MODE (Pin 60) | Output format & duty cycle stabilizer control | GND = offset binary + stabilizer off; 1/3 VDD = offset binary + on; 2/3 VDD = 2's complement + on; VDD = 2's complement + off. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 14-bit ADC cores | Enables time-aligned digitization of two RF paths or sensor channels without interleaving artifacts or skew calibration. |
| Flexible input range (±0.5V to ±1V) | Allows optimization for noise floor (smaller range) or headroom (larger range) without external gain stages or reference redesign. |
| Integrated 1.5V reference with ±25ppm/°C tempco | Eliminates need for external precision reference; supports DC-coupled applications requiring stable offset over –40°C to +85°C. |
| 575MHz full-power bandwidth S/H | Supports direct sampling of L-band and S-band IF signals without bandpass filtering, reducing BOM and layout complexity. |
| Per-channel nap/shutdown modes | Reduces system-level power by >97% per idle channel - critical for battery-powered portable instrumentation and phased-array receivers. |
Applications
| Wireless Base Station Receiver | Medical Ultrasound Imaging |
|---|---|
|
Use Scenario: Digitizing dual IF signals (e.g., I/Q or diversity antennas) in LTE/FDD-TDD base station transceivers. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC with <5ps inter-channel skew, providing phase-coherent data for digital beamforming. Use Value: 110dB channel isolation preserves EVM at –45dBc and enables 256-QAM demodulation without cross-talk correction firmware. |
Use Scenario: Capturing echo return signals from phased-array transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: High-SNR digitizer for time-of-flight measurement, supporting 15MHz–20MHz center frequency beamformed receive paths. Use Value: 72.4dB SNR enables detection of weak tissue echoes buried 20dB below noise floor, improving lesion contrast resolution. |
| Spectrum Analyzer Front End | Test & Measurement Digitizer Module |
|
Use Scenario: Real-time FFT-based spectral analysis of wideband RF signals up to 200MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Dual ADC feeding FPGA FFT engine; one channel used for calibration reference, second for DUT signal path. Use Value: 88dB SFDR ensures spurious-free analysis of low-level signals adjacent to strong interferers - meeting CISPR Class B EMC test requirements. |
Use Scenario: Modular PXI or USB-based oscilloscope digitizer with ≥100Msps sampling and dual-channel correlation capability. IC Role / Device Role / Timing Role: Precision acquisition IC with deterministic 5-cycle pipeline latency and synchronous dual-channel enable for time-aligned triggering. Use Value: Low 1.3LSBRMS transition noise minimizes waveform jitter in time-domain measurements, achieving sub-10ps time-interval accuracy. |
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 |
|---|---|---|---|
| AD9288BSTZ-100 | 8-bit, 100Msps dual ADC; lower resolution but higher SFDR (92dBc) and lower power (320mW). | Better suited for wideband communication monitoring where quantization noise is masked by processing gain. | Select when system SNR budget allows 8-bit resolution and ultra-low power is prioritized over dynamic range. |
| LTC2264IUP#PBF | 14-bit, 80Msps; identical pinout and feature set but lower max sample rate and reduced power (390mW). | Valid drop-in replacement where 80Msps meets bandwidth needs and thermal margin is constrained. | Choose for cost-sensitive or thermally limited designs where 105Msps is not required - retains same layout and firmware interface. |
Compared with AD9288BSTZ-100 and LTC2264IUP#PBF, the LTC2284IUP#PBF uniquely balances 14-bit resolution, 105Msps speed, and 72.4dB SNR in a single 3V supply - making it optimal for applications demanding both wide dynamic range and high instantaneous bandwidth without interpolation or decimation.
Availability
LTC2284IUP#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, and test equipment requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC2284IUP#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2284IUP#PBF belongs to Linear Technology's high-speed ADC product line, engineered for demanding digitization tasks in communications and imaging where AC performance, power efficiency, and channel matching are critical design constraints.
FAQ
What is the operating temperature range for the LTC2284IUP#PBF?
The LTC2284IUP#PBF is rated for industrial operation from –40°C to +85°C. This is confirmed by the "I" grade designation in the part number and specified in the Absolute Maximum Ratings table. The device maintains full performance compliance-including SNR, SFDR, and INL-across this entire range when operated within recommended supply and input conditions.
Does the LTC2284IUP#PBF require an external reference voltage?
No, the LTC2284IUP#PBF includes an internal 1.5V reference with ±25ppm/°C tempco and supports fully self-contained operation. External references are optional and only needed when custom input ranges beyond ±1V or tighter reference stability (<10ppm/°C) are required - in which case REFHA/REFHB pins accept external sources.
How is channel synchronization achieved between the two ADCs in the LTC2284IUP#PBF?
The LTC2284IUP#PBF achieves deterministic inter-channel alignment through shared clock domain architecture and matched internal propagation delays. When CLKA and CLKB are driven from the same source, measured inter-channel skew is <5ps, and pipeline latency is identically five cycles for both channels - enabling coherent sampling without external deskew circuitry.
Can the LTC2284IUP#PBF drive standard 3.3V CMOS logic directly?
Yes, the LTC2284IUP#PBF digital outputs are compatible with 3.3V CMOS logic when OVDD is set to 3.3V. Its VOH is guaranteed ≥2.99V at IO = –10µA and VOL ≤0.09V at IO = 1.6mA - exceeding standard 3.3V CMOS thresholds. Output voltage levels scale linearly with OVDD from 0.5V to 3.6V.
What is the purpose of the exposed pad (Pin 65) on the LTC2284IUP#PBF QFN package?
The exposed pad (Pin 65) on the LTC2284IUP#PBF is electrically connected to GND and serves dual thermal and electrical functions. It must be soldered to a PCB copper pour tied to system ground to achieve the specified θJA = 20°C/W and ensure stable analog performance - floating or unconnected pads cause thermal throttling and increased noise floor.
LTC2284IUP#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 105M
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- 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:
- 2.85V ~ 3.4V
- Voltage - Supply, Digital:
- 2.85V ~ 3.4V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2284IUP#PBF FAQ
1.How can I place an order for LTC2284IUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2284IUP#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 LTC2284IUP#PBF reliable?
The price and inventory of LTC2284IUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2284IUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2284IUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2284IUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2284IUP#PBF?
LTC2284IUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2284IUP#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 LTC2284IUP#PBF?
For technical support, including LTC2284IUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2284IUP#PBF requirements.
6.How does Aetrix verify that LTC2284IUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2284IUP#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 LTC2284IUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2284IUP#PBF?
All LTC2284IUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2284IUP#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 LTC2284IUP#PBF part is unused and in its original packaging.
Return procedure for LTC2284IUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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