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Analog Devices Inc. LTC2298CUP#PBF
- Part No.:
- LTC2298CUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2298CUP#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,407
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Product details
Overview
LTC2298CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 14-bit, 65Msps low-power analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 74.3dB SNR and 90dB SFDR at Nyquist, with 110dB channel isolation at 100MHz. It targets high-fidelity digitization in broadband communications receivers and medical ultrasound imaging systems where simultaneous dual-channel sampling and wide dynamic range are critical.
For engineers reviewing the LTC2298CUP#PBF datasheet, LTC2298CUP#PBF pinout, LTC2298CUP#PBF application, or LTC2298CUP#PBF equivalent, key selection criteria include its 65Msps sample rate, dual independent clock inputs (CLKA/CLKB), flexible ±0.5V to ±1V differential input range, multiplexed or separate 14-bit parallel output buses, and integrated clock duty cycle stabilizer enabling robust timing across non-50% duty cycles.
Technical Context
The LTC2298CUP#PBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency and supporting independent or synchronized sampling via separate CLKA and CLKB inputs. Its internal 1.5V reference and programmable SENSE/VCMA/VCMB pins enable precise ±0.5V or ±1V full-scale input ranges without external components.
It features dual independent shutdown control (SHDNA/SHDNB) and output enable (OEA/OEB), allowing per-channel nap mode (15mW/channel) or full shutdown (2mW/channel), while the MODE pin selects offset binary or 2's complement output format and enables/disables the clock duty cycle stabilizer - all configurable without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement systems. |
| Sample Rate | 65Msps maximum - supports real-time digitization of IF signals up to 32.5MHz (Nyquist) in direct-conversion receivers. |
| SNR / SFDR | 74.3dB / 90dB at 5MHz input - enables >12 effective bits for high-fidelity spectral analysis and baseband signal capture. |
| Power Dissipation | 400mW at 65Msps (both channels active) - allows thermal management in dense RF front-end PCB layouts without forced air. |
| Input Bandwidth | 575MHz full-power - preserves signal integrity for wideband analog inputs including LTE, WiMAX, and radar IF stages. |
| Channel Isolation | 110dB at 100MHz - prevents crosstalk-induced distortion in dual-path I/Q demodulators and phased-array beamformers. |
| Supply Range | 2.7V–3.4V analog (VDD); 0.5V–3.6V digital output (OVDD) - supports interfacing to 1.8V, 2.5V, or 3.3V FPGA/ASIC logic without level shifters. |
Pinout & Package
64-pin (9mm × 9mm) QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+/AINA– AINB+/AINB– | Differential analog inputs (Ch A/B) | Accept ±0.5V to ±1V differential signals; require matched trace routing and common-mode bias via VCMA/VCMB. |
| CLKA/CLKB | Independent sampling clock inputs | Positive-edge triggered; support asynchronous dual-channel sampling or synchronous I/Q acquisition when tied together. |
| DA0–DA13 / DB0–DB13 | 14-bit parallel digital outputs (Ch A/B) | Configurable as separate buses or multiplexed via MUX pin; output voltage swing set by OVDD (0.5V–3.6V). |
| OFA/OFB | Overflow/underflow flags | Active-high indication of input exceeding ±FS range - used for AGC feedback or data validity checking in real-time processing. |
| SHDNA/SHDNB OEA/OEB | Per-channel shutdown & output enable | Enable power-gating of individual ADCs and tri-state control of output drivers - essential for dynamic power scaling in battery-powered instruments. |
| MODE | Output format & duty cycle stabilizer control | Selects offset binary/2's complement and enables/disables internal clock conditioning - eliminates need for external duty cycle correction circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent clock inputs | Enables true time-interleaved or asynchronous dual-channel acquisition without external clock distribution skew. |
| Programmable input range (±0.5V/±1V) | Eliminates external gain-setting resistors; supports direct connection to transformer-coupled or op-amp-driven sources. |
| Integrated clock duty cycle stabilizer | Allows high AC performance with non-50% duty cycle clocks (e.g., from PLLs or dividers), reducing system BOM and layout complexity. |
| Per-channel nap/shutdown modes | Reduces power to 15mW or 2mW per channel - extends battery life in portable spectrum analyzers and handheld ultrasound probes. |
| 110dB channel isolation at 100MHz | Preserves I/Q orthogonality in zero-IF receivers, minimizing image rejection degradation and EVM impact in 5G NR baseband processing. |
Applications
| Wireless Base Station Receiver | Medical Ultrasound Beamformer |
|---|---|
Use Scenario: Digitizing dual-path I/Q downconverted signals from RF front-end in macrocell LTE/5G base stations. IC Role / Device Role / Timing Role: Dual-channel ADC capturing simultaneous in-phase and quadrature baseband waveforms at 65Msps with <1ps aperture jitter. Use Value: 74.3dB SNR and 90dB SFDR maintain EVM <1.5% for 256-QAM, while 110dB isolation prevents I/Q crosstalk-induced constellation rotation. | Use Scenario: High-speed sampling of echo return signals from phased-array transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: Dual ADC acquiring time-aligned RF echo data from adjacent transducer elements for digital beamforming. Use Value: 575MHz input bandwidth preserves harmonic content of 5–15MHz ultrasound pulses; low 400mW power enables fanless thermal design. |
| Spectral Monitoring System | Portable Test Equipment |
Use Scenario: Real-time wideband spectrum analysis across 0–32.5MHz instantaneous bandwidth in field-deployable RF monitors. IC Role / Device Role / Timing Role: Dual ADC feeding FPGA-based FFT engines for simultaneous frequency-domain visualization and signal classification. Use Value: Multiplexed output bus (via MUX pin) reduces FPGA pin count by 50%; 74.3dB SNR ensures detection of weak interferers 10dB below noise floor. | Use Scenario: Battery-powered handheld oscilloscope or vector signal analyzer requiring high-resolution waveform capture. IC Role / Device Role / Timing Role: Core digitizer enabling 65Msps sampling with on-the-fly gain switching between ±1V and ±0.5V input ranges. Use Value: Nap mode cuts power by 62% during idle periods; internal reference and SENSE programming eliminate external DACs and trim components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9257BCPZ-65 | 14-bit, 65Msps, single-supply 1.8V core + 3.3V output; lower 350mW power but 71.5dB SNR and no integrated duty cycle stabilizer. | Requires external clock conditioning and level-shifting for 3.3V logic; better suited for ultra-low-power embedded systems than RF-intensive applications. | Choose AD9257BCPZ-65 when system-level power budget is <350mW and clock source provides stable 50% duty cycle. |
| LTC2284IUP#PBF | 14-bit, 80Msps, same pinout and feature set but higher speed; consumes 520mW and requires tighter layout for >80Msps timing closure. | Supports wider instantaneous bandwidth (up to 40MHz) but demands higher-quality clock distribution and increased PCB layer count. | Choose LTC2284IUP#PBF when application requires >65Msps sampling and can accommodate higher power and layout complexity. |
Compared with AD9257BCPZ-65 and LTC2284IUP#PBF, the LTC2298CUP#PBF uniquely balances 65Msps performance, integrated clock conditioning, and 74.3dB SNR in a thermally optimized 9mm QFN - making it optimal for RF test equipment and communications infrastructure where signal fidelity and design simplicity are prioritized over marginal speed or power reduction.
Availability
LTC2298CUP#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, and portable instrumentation requiring stable component supply, long-term obsolescence planning, and guaranteed lot traceability.
Supply support for LTC2298CUP#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 industrial, automotive, communications, and healthcare markets.
The LTC2298 series belongs to ADI's high-speed precision ADC product line, engineered specifically for demanding RF and instrumentation applications requiring dual-channel synchronization, wide input bandwidth, and low-noise digitization without external support circuitry.
FAQ
What is the operating temperature range for the LTC2298CUP#PBF?
The LTC2298CUP#PBF is specified for commercial-grade operation from 0°C to 70°C. This grade is validated per the datasheet's "LTC2298C" temperature suffix and applies to all DC and AC specifications unless otherwise noted. The device uses internal thermal protection and maintains 74.3dB SNR across this full range when properly decoupled and heatsinked via the exposed pad.
Does the LTC2298CUP#PBF support single-ended analog inputs?
Yes, the LTC2298CUP#PBF supports single-ended analog inputs, though differential drive is recommended for optimal harmonic distortion and SNR. When using single-ended inputs, the common-mode voltage must be set to 0.5V–2.0V via the SENSEA/SENSEB pins, and performance degrades slightly - e.g., SFDR drops ~3–5dB compared to differential operation at 30MHz.
How does the MODE pin configure output format and clock stabilization on the LTC2298CUP#PBF?
The MODE pin on the LTC2298CUP#PBF sets both output coding and clock duty cycle stabilizer state: grounded = offset binary + stabilizer off; 1V (≈1/3 VDD) = offset binary + stabilizer on; 2V (≈2/3 VDD) = 2's complement + stabilizer on; VDD = 2's complement + stabilizer off. This dual-function control simplifies PCB routing by eliminating separate configuration lines.
Can the LTC2298CUP#PBF operate with different sampling rates on each channel?
No - the LTC2298CUP#PBF requires identical sampling rates for both channels because CLKA and CLKB share the same internal timing generator and pipeline clocking structure. While CLKA and CLKB can be driven asynchronously, the maximum sample rate is fixed at 65Msps for both channels simultaneously; independent rate control is not supported.
What is the purpose of the SENSEA and SENSEB pins on the LTC2298CUP#PBF?
The SENSEA and SENSEB pins on the LTC2298CUP#PBF program the full-scale input range per channel: connecting to VCMA/VCMB selects ±0.5V; to VDD selects ±1V; or applying an external voltage (0.5V–1.0V) sets ±VSENSE. This eliminates external gain resistors and enables dynamic range optimization for varying signal amplitudes in multi-stage receiver chains.
LTC2298CUP#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):
- 65M
- 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:
- 2.7V ~ 3.4V
- Voltage - Supply, Digital:
- 2.7V ~ 3.4V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2298CUP#PBF FAQ
1.How can I place an order for LTC2298CUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2298CUP#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 LTC2298CUP#PBF reliable?
The price and inventory of LTC2298CUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2298CUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2298CUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2298CUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2298CUP#PBF?
LTC2298CUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2298CUP#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 LTC2298CUP#PBF?
For technical support, including LTC2298CUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2298CUP#PBF requirements.
6.How does Aetrix verify that LTC2298CUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2298CUP#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 LTC2298CUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2298CUP#PBF?
All LTC2298CUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2298CUP#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 LTC2298CUP#PBF part is unused and in its original packaging.
Return procedure for LTC2298CUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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