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Analog Devices Inc. LTC2280CUP#TRPBF
- Part No.:
- LTC2280CUP#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2280CUP#TRPBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,158
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Product details
Overview
LTC2280CUP#TRPBF from Analog Devices (formerly Linear Technology) is a dual 10-bit, 105Msps low-noise analog-to-digital converter operating from a single 3V supply. It delivers 61.6dB SNR and 85dB SFDR at Nyquist, features 110dB channel isolation at 100MHz, and supports flexible differential input ranges from ±0.5V to ±1V. It is used in high-speed imaging and broadband communications signal digitization.
For engineers reviewing the LTC2280CUP#TRPBF datasheet, LTC2280CUP#TRPBF pinout, LTC2280CUP#TRPBF application, or LTC2280CUP#TRPBF equivalent, key selection considerations include its dual-channel pipelined architecture, clock duty cycle stabilizer, 64-pin QFN package with exposed thermal pad, and support for both offset binary and 2's complement output formats.
Technical Context
The LTC2280CUP#TRPBF implements a six-stage CMOS pipelined ADC core per channel, achieving 5-cycle pipeline latency and enabling precise timing alignment between dual channels. Its integrated S/H circuit provides 575MHz full-power bandwidth and sub-0.2ps RMS aperture jitter, critical for wideband RF sampling.
It employs independent reference programming via SENSEA/SENSEB pins to configure input range and internal 1.5V VCM bias generation per channel. The MODE pin selects both output format (offset binary or 2's complement) and clock duty cycle stabilizer enable state-functionally coupling digital interface behavior with clock robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with no missing codes-guarantees monotonic transfer function essential for measurement integrity. |
| Sample Rate | 105Msps maximum-supports real-time digitization of signals up to ~52.5MHz (Nyquist), suitable for IF sampling in wireless receivers. |
| SNR | 61.6dBFS at 5MHz input-defines effective resolution (~10.3 ENOB) and noise floor for dynamic signal capture. |
| SFDR | 85dBc at 5MHz input-indicates spurious-free operation critical for detecting weak signals near strong interferers. |
| Channel Isolation | –110dB at 100MHz-ensures minimal crosstalk between A/B channels during simultaneous wideband acquisition. |
| Power Dissipation | 540mW typical at 105Msps-enables high-speed performance within thermal constraints of compact PCB layouts. |
| Input Bandwidth | 575MHz full-power-allows accurate digitization of fast-rising pulses and wideband modulated signals without amplitude roll-off. |
Pinout & Package
Package: 64-lead (9mm × 9mm) plastic QFN with exposed GND pad (Pin 65), rated for 0°C to 70°C operation (C-grade). Exposed pad must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+, AINA– AINB+, AINB– |
Differential analog inputs (Ch A & Ch B) | Accept ±0.5V to ±1V differential signals; require matched 100Ω source impedance for optimal SFDR. |
| CLKA, CLKB | Single-ended clock inputs (Ch A & Ch B) | Positive-edge triggered; duty cycle stabilizer reduces sensitivity to clock asymmetry above 80Msps. |
| DA0–DA9, DB0–DB9 | Parallel digital outputs (Ch A & Ch B) | 10-bit LSB-aligned data buses; output voltage swing referenced to OVDD (0.5V–3.6V logic compatibility). |
| OEA, OEB OFA, OFB |
Output enable & overflow flags (Ch A & Ch B) | OEx controls tri-state output drivers; OFx asserts high on over/underflow-enables real-time data validity monitoring. |
| SENSEA, SENSEB | Input range configuration pins | Select ±0.5V (tie to VCMA/VCMB), ±1V (tie to VDD), or custom range (apply external voltage 0.5–1V). |
| MODE | Output format & clock stabilizer control | GND = offset binary + stabilizer off; 1/3 VDD = offset binary + stabilizer on; 2/3 VDD = 2's complement + stabilizer on. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 10-bit ADCs | Enables time-aligned simultaneous sampling of two analog signals-critical for I/Q demodulation and phased-array systems. |
| Integrated clock duty cycle stabilizer | Allows high AC performance even with non-50% clock duty cycles-reduces need for external clock conditioning circuitry. |
| Flexible input range programming | Supports ±0.5V, ±1V, or user-defined ranges via SENSE pins-simplifies front-end design across varying signal amplitudes. |
| Low 0.08LSBRMS transition noise | Minimizes code flicker in static or low-frequency measurements-enhances precision in spectral analysis applications. |
| Shutdown and nap modes | Reduces power to 2mW (shutdown) or 15mW (nap) per channel-extends battery life in portable instrumentation. |
Applications
| Wireless Base Station Receiver | Medical Ultrasound Imaging |
|---|---|
|
Use Scenario: Digitizing 70–140MHz IF signals from quadrature downconverters in LTE/FDD-TDD base stations. IC Role / Device Role / Timing Role: Dual-channel ADC captures I and Q paths synchronously with 105Msps sample rate and <5ps inter-channel skew. Use Value: 85dB SFDR enables detection of adjacent-channel interference; 110dB isolation prevents I/Q crosstalk-induced image artifacts. |
Use Scenario: Sampling echo return signals from phased-array transducers operating at 5–15MHz center frequencies. IC Role / Device Role / Timing Role: High-speed dual ADC acquires time-of-flight data from multiple receive channels with matched gain/phase response. Use Value: 61.6dB SNR preserves contrast resolution in B-mode imaging; low INL (±0.6LSB) ensures accurate tissue boundary localization. |
| Spectrum Analyzer Front End | Portable Test Equipment |
|
Use Scenario: Capturing wide instantaneous bandwidth (up to 52.5MHz) for real-time FFT-based spectral analysis in handheld analyzers. IC Role / Device Role / Timing Role: Dual ADC feeds parallel processing pipelines-one for real-time display, one for trigger/event capture. Use Value: 575MHz input bandwidth supports direct RF sampling up to UHF; low power (540mW) enables fanless thermal design. |
Use Scenario: Embedded digitization in battery-powered oscilloscopes and signal generators requiring compact, low-heat solutions. IC Role / Device Role / Timing Role: ADC serves as primary acquisition engine with programmable sleep modes to extend operational runtime. Use Value: Shutdown mode cuts power to 2mW per channel; 64-pin QFN minimizes board area versus older SOIC alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2282CUP#TRPBF | 12-bit resolution, same 105Msps sample rate, identical 64-pin QFN package and pinout. | Higher resolution required for >70dB SFDR applications; increased power (720mW) and larger code width demand revised FPGA interface logic. | Select when ENOB > 11.5 is needed; verify FPGA resource allocation for wider data bus and thermal margin for higher dissipation. |
| AD9236BCPZ-105 | Single 12-bit, 105Msps ADC; different pinout, no integrated duty cycle stabilizer, requires external reference. | Requires two devices plus synchronization circuitry to match dual-channel functionality; lacks native channel isolation spec. | Choose only if system already uses ADI's JESD204B ecosystem; expect added layout complexity and calibration overhead for dual-channel coherence. |
Compared with LTC2280CUP#TRPBF, LTC2282CUP#TRPBF offers higher resolution at identical speed and footprint but increases power and interface width, while AD9236BCPZ-105 provides comparable speed in a single-channel form factor but necessitates external synchronization and yields lower channel-to-channel isolation.
Availability
LTC2280CUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical ultrasound, spectrum analysis, and portable test equipment requiring stable component supply across extended production lifecycles.
Supply support for LTC2280CUP#TRPBF 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 LTC2280CUP#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding digitization tasks in communications and imaging where dual-channel synchronization, low noise, and wide input bandwidth are essential.
FAQ
What is the operating temperature range for the LTC2280CUP#TRPBF?
The LTC2280CUP#TRPBF is specified for commercial-grade operation from 0°C to 70°C ambient. This is indicated by the "C" suffix in the part number and aligns with the LTC2280C temperature grade. The device incorporates thermal protection and maintains full AC/DC specifications across this range, including 61.6dB SNR and ±0.6LSB INL.
Does the LTC2280CUP#TRPBF support single-ended analog input?
Yes, the LTC2280CUP#TRPBF supports single-ended input: drive AIN+ with the signal and tie AIN– to VCM (1.5V). However, harmonic distortion and INL degrade relative to differential operation, while SNR and DNL remain unchanged. For optimal performance-especially SFDR above 70dB-differential drive with matched 100Ω source impedance is strongly recommended.
How does the MODE pin affect the LTC2280CUP#TRPBF's output interface?
The MODE pin on the LTC2280CUP#TRPBF simultaneously configures output data format and clock duty cycle stabilizer state. Ground sets offset binary with stabilizer off; 1/3 VDD enables offset binary with stabilizer on; 2/3 VDD selects 2's complement with stabilizer on; VDD selects 2's complement with stabilizer off. This dual function simplifies system-level control but requires stable voltage referencing.
What is the purpose of the exposed pad (Pin 65) on the LTC2280CUP#TRPBF?
The exposed pad (Pin 65) on the LTC2280CUP#TRPBF is electrically connected to GND and serves as the primary thermal and electrical ground path. It must be soldered to a large PCB copper pour tied to system ground to achieve θJA = 20°C/W and ensure stable operation at full 540mW dissipation. Leaving it unconnected degrades thermal performance and may cause parametric drift or latch-up.
Can the LTC2280CUP#TRPBF operate with separate analog and digital supplies?
No-the LTC2280CUP#TRPBF uses a single 2.85V–3.4V analog supply (VDD) for both core ADC and internal reference circuits. However, it does support an independent output driver supply (OVDD) ranging from 0.5V to 3.6V, allowing interface compatibility with 1.8V, 2.5V, or 3.3V logic families without level-shifting components.
LTC2280CUP#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2280CUP#TRPBF FAQ
1.How can I place an order for LTC2280CUP#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2280CUP#TRPBF 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 LTC2280CUP#TRPBF reliable?
The price and inventory of LTC2280CUP#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2280CUP#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2280CUP#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2280CUP#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2280CUP#TRPBF?
LTC2280CUP#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2280CUP#TRPBF 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 LTC2280CUP#TRPBF?
For technical support, including LTC2280CUP#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2280CUP#TRPBF requirements.
6.How does Aetrix verify that LTC2280CUP#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2280CUP#TRPBF 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 LTC2280CUP#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2280CUP#TRPBF?
All LTC2280CUP#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2280CUP#TRPBF, 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 LTC2280CUP#TRPBF part is unused and in its original packaging.
Return procedure for LTC2280CUP#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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