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Analog Devices Inc. LTC2280IUP#TRPBF
- Part No.:
- LTC2280IUP#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2280IUP#TRPBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,011
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Product details
Overview
LTC2280IUP#TRPBF from Analog Devices (formerly Linear Technology) is a dual 10-bit, 105 Msps low-noise analog-to-digital converter designed for high-frequency signal digitization in demanding communications and imaging systems. It operates from a single 3V supply (2.85V–3.4V), delivers 61.6 dB SNR and 85 dB SFDR at Nyquist, and features 110 dB channel isolation at 100 MHz - enabling simultaneous high-fidelity sampling of two independent RF or IF signals.
For engineers reviewing the LTC2280IUP#TRPBF datasheet, LTC2280IUP#TRPBF pinout, LTC2280IUP#TRPBF application, or LTC2280IUP#TRPBF equivalent, key selection considerations include its dual-channel pipelined architecture, flexible ±0.5V to ±1V differential input range, clock duty cycle stabilizer, and QFN-64 package with exposed thermal pad - all critical for wideband spectral analysis, portable instrumentation, and broadband wireless receiver front ends.
Technical Context
The LTC2280IUP#TRPBF implements a six-stage CMOS pipelined ADC core per channel, achieving 5-cycle pipeline latency and supporting synchronous or independent sampling via separate CLKA/CLKB inputs. Its integrated S/H features 575 MHz full-power bandwidth and <0.2 ps RMS aperture jitter, enabling accurate digitization of signals up to 140 MHz input frequency while maintaining 61.4 dB SNR.
Each channel includes independent reference programming (SENSEA/SENSEB), common-mode bias generation (VCMA/VCMB), and configurable output format (offset binary or 2's complement) controlled by the MODE pin. The device supports three power states - normal (540 mW), nap (15 mW/channel), and shutdown (2 mW/channel) - with dedicated SHDN/OE pins per channel for dynamic power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, no missing codes - guarantees monotonic transfer function essential for control-loop feedback and real-time waveform reconstruction. |
| Sample Rate | 105 Msps maximum - supports Nyquist-limited bandwidth up to 52.5 MHz, suitable for LTE, WiMAX, and radar baseband sampling. |
| SNR @ 70 MHz | 60 dBFS typical - enables >10-bit effective resolution for medium-frequency IF signals in software-defined radio receivers. |
| SFDR @ 70 MHz | 76–85 dBc typical - suppresses spurious tones sufficiently for multi-carrier communication systems requiring clean adjacent-channel rejection. |
| Channel Isolation | –110 dB at 100 MHz - prevents crosstalk-induced distortion when digitizing closely spaced dual-band signals (e.g., LNA outputs in diversity receivers). |
| Input Range | ±0.5 V to ±1.0 V differential - configurable via SENSE pins to match transformer-coupled or op-amp-driven front ends without external gain scaling. |
| Power Dissipation | 540 mW at full rate (both channels active) - optimized for thermally constrained portable or dense PCB layouts using the exposed-pad QFN package. |
Pinout & Package
Package: 64-lead (9 mm × 9 mm) plastic QFN 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 & Ch B) | Accept ±0.5V to ±1V swing around 1.5V common mode; require matched 100Ω source impedance for optimal SFDR. |
| CLKA, CLKB | Independent sampling clock inputs | Single-ended, edge-triggered on rising edge; support asynchronous or synchronized dual-channel acquisition. |
| DA0–DA9, DB0–DB9 | Parallel digital outputs (Ch A & Ch B) | 10-bit LVCMOS-compatible data buses; output voltage swing referenced to OVDD (0.5V–3.6V) for interfacing with FPGA I/O banks. |
| OEA, OEB OFA, OFB |
Output enable & overflow flags | Per-channel tri-state control and saturation detection - enables time-multiplexed bus sharing or overflow-triggered gain adjustment. |
| SENSEA, SENSEB | Input range programming inputs | Voltage-selectable full-scale range: VCMA/VCMB → ±0.5V; VDD → ±1V; external 0.5–1.0V → ±VSENSE. |
| MODE | Output format & duty cycle 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 ADC cores | Enables simultaneous sampling of two RF paths (e.g., I/Q demodulation or MIMO antenna pairs) without inter-channel timing skew. |
| Integrated clock duty cycle stabilizer | Compensates for non-50% clock duty cycles - eliminates SNR degradation when driven by PLLs or dividers with asymmetric output waveforms. |
| 110 dB channel isolation | Prevents signal leakage between channels at RF frequencies - critical for full-duplex transceivers and spectral monitoring applications. |
| Flexible power management | Per-channel shutdown, nap, and output-enable modes allow dynamic power scaling in battery-powered instruments and adaptive receivers. |
| Configurable output format | Offset binary or 2's complement selection simplifies FPGA logic design and avoids sign-extension overhead in DSP pipelines. |
Applications
| Wireless Base Station Receiver | Portable Spectrum Analyzer |
|---|---|
Use Scenario: Digitizing dual IF outputs from quadrature downconverters in LTE/FDD-TDD infrastructure equipment. IC Role / Device Role / Timing Role: Dual-channel ADC capturing I and Q baseband signals synchronously at 105 Msps with <0.2 ps jitter to preserve EVM and ACLR. Use Value: 61.6 dB SNR and 85 dB SFDR meet 3GPP TS 36.104 ACLR requirements for 20 MHz LTE carriers without additional filtering. |
Use Scenario: Real-time FFT-based frequency-domain analysis in handheld test equipment with battery life constraints. IC Role / Device Role / Timing Role: High-speed digitizer feeding FPGA-based FFT engine; nap mode reduces power during idle scan intervals. Use Value: 540 mW total power and 110 dB channel isolation enable >100 dB dynamic range measurement across 0–50 MHz span. |
| Medical Ultrasound Beamformer | Radar Signal Processing Front End |
Use Scenario: Sampling echo return signals from phased-array transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Dual ADC acquiring time-aligned RF echoes from adjacent receive channels for digital beamforming. Use Value: 575 MHz S/H bandwidth supports >15 MHz ultrasound carrier frequencies; low 0.08 LSBRMS transition noise preserves image contrast resolution. |
Use Scenario: Digitizing intermediate frequency outputs from FMCW radar mixers in automotive ADAS modules. IC Role / Device Role / Timing Role: Simultaneous sampling of two mixer outputs for phase-coherent Doppler processing and angle-of-arrival estimation. Use Value: –110 dB crosstalk at 100 MHz ensures accurate phase difference measurement between channels for sub-degree angular resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2282IUP#TRPBF | 12-bit resolution, same 105 Msps sample rate, identical QFN-64 package and pinout. | Higher dynamic range required (e.g., high-end spectrum analyzers); trades 2.5× higher power (820 mW) for +12 dB SFDR. | Select when ENOB > 11 bits is mandatory and thermal headroom allows increased power dissipation. |
| AD9233BCPZ-105 | Single-channel 12-bit, 105 Msps; requires two devices for dual-channel operation; uses different SPI configuration interface. | Systems needing independent channel calibration or mismatch-tolerant designs where board space permits dual IC placement. | Choose when per-channel gain/offset trimming is prioritized over integration density and inter-channel timing matching. |
Compared with LTC2282IUP#TRPBF, the LTC2280IUP#TRPBF offers lower power and smaller code size at 10-bit precision, while AD9233BCPZ-105 provides higher resolution per channel but increases layout complexity and eliminates guaranteed inter-channel skew control.
Availability
LTC2280IUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, portable instrumentation, and radar signal processing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2280IUP#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 LTC2280IUP#TRPBF belongs to ADI's high-speed precision ADC product line, engineered specifically for wideband, low-noise digitization in communications infrastructure and test equipment where dual-channel synchronization and thermal efficiency are critical.
FAQ
What is the operating temperature range for the LTC2280IUP#TRPBF?
The LTC2280IUP#TRPBF is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all AC and DC specifications including SNR, SFDR, INL, DNL, and power consumption - making it suitable for outdoor base stations, vehicle-mounted radar, and factory-floor instrumentation where ambient conditions vary widely. The device's thermal resistance (θJA = 20°C/W) and exposed-pad QFN package ensure reliable operation within this range when mounted per recommended PCB layout guidelines.
Does the LTC2280IUP#TRPBF support single-ended analog input drive?
Yes, the LTC2280IUP#TRPBF supports single-ended input drive: connect AIN+ to the signal and AIN– to VCM (1.5 V) or a stable 1.5 V reference. However, harmonic distortion (especially 2nd and 3rd) degrades compared to differential drive, while SNR and DNL remain unaffected. For applications where cost or board space limits use of differential drivers or transformers, this mode provides functional digitization - though SFDR may drop by 6–10 dB depending on input frequency and source impedance matching.
How does the clock duty cycle stabilizer in the LTC2280IUP#TRPBF improve performance?
The clock duty cycle stabilizer in the LTC2280IUP#TRPBF corrects non-50% duty cycle clock inputs by generating internal balanced clocks, reducing aperture uncertainty and preserving SNR at full 105 Msps sample rate. Without it, clocks with 40/60 or 30/70 duty cycles cause sampling window asymmetry that degrades SNR by up to 3 dB. Enabling the stabilizer (via MODE = 1/3 VDD or 2/3 VDD) restores full dynamic performance regardless of input clock symmetry - critical when using integer-N PLLs or clock dividers with inherent duty-cycle distortion.
What is the purpose of the SENSEA and SENSEB pins on the LTC2280IUP#TRPBF?
The SENSEA and SENSEB pins on the LTC2280IUP#TRPBF configure the full-scale differential input range per channel: connecting to VCMA/VCMB selects ±0.5 V, to VDD selects ±1.0 V, and applying an external 0.5–1.0 V sets ±VSENSE. This eliminates need for external gain stages when interfacing with diverse front ends - e.g., transformer-coupled RF paths (±0.5 V) or op-amp buffers (±1.0 V). Each channel operates independently, allowing mixed-range operation if required by system architecture.
Can the LTC2280IUP#TRPBF output buses be multiplexed onto a single data path?
Yes, the LTC2280IUP#TRPBF supports multiplexed output via the MUX pin: when MUX = HIGH, Channel A drives DA0–DA9/OFA and Channel B drives DB0–DB9/OFB; when MUX = LOW, the buses swap. To time-multiplex both channels onto one 10-bit bus, tie MUX, CLKA, and CLKB together - but Analog Devices explicitly advises against this above 80 Msps due to timing margin erosion. At 105 Msps, use separate buses or an external multiplexer for reliable operation.
LTC2280IUP#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2280IUP#TRPBF FAQ
1.How can I place an order for LTC2280IUP#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2280IUP#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 LTC2280IUP#TRPBF reliable?
The price and inventory of LTC2280IUP#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2280IUP#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2280IUP#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2280IUP#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2280IUP#TRPBF?
LTC2280IUP#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2280IUP#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 LTC2280IUP#TRPBF?
For technical support, including LTC2280IUP#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2280IUP#TRPBF requirements.
6.How does Aetrix verify that LTC2280IUP#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2280IUP#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 LTC2280IUP#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2280IUP#TRPBF?
All LTC2280IUP#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2280IUP#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 LTC2280IUP#TRPBF part is unused and in its original packaging.
Return procedure for LTC2280IUP#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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