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Analog Devices Inc. LTC2294CUP#PBF
- Part No.:
- LTC2294CUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2294CUP#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,078
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Product details
Overview
LTC2294CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 12-bit, 80Msps low-power analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 70.6dB SNR and 90dB SFDR at 70MHz input - optimized for high-fidelity imaging, broadband communications, and spectral analysis systems requiring wide dynamic range and channel isolation up to 110dB at 100MHz.
For engineers reviewing the LTC2294CUP#PBF datasheet, LTC2294CUP#PBF pinout, LTC2294CUP#PBF application, or LTC2294CUP#PBF equivalent, key selection considerations include its 64-pin QFN package, dual independent clock inputs (CLKA/CLKB), multiplexed or separate 12-bit parallel digital output buses, flexible ±0.5V to ±1V differential input range, and integrated clock duty cycle stabilizer enabling robust sampling across non-50% clock waveforms.
Technical Context
The LTC2294CUP#PBF implements a six-stage CMOS pipelined ADC architecture with 5-cycle pipeline latency, supporting simultaneous sampling of two independent analog channels. Each channel features dedicated sample-and-hold with 575MHz full-power bandwidth and aperture jitter of 0.2psRMS.
It integrates dual internal 1.5V common-mode bias outputs (VCMA/VCMB), programmable reference selection via SENSEA/SENSEB pins, and configurable output format (offset binary or 2's complement) and clock duty cycle stabilization controlled by the MODE pin - all operating under a single analog supply while supporting independent 0.5V–3.6V digital output voltage (OVDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and deterministic code mapping in closed-loop control or measurement systems. |
| Sample Rate | 80Msps maximum - supports Nyquist bandwidth up to 40MHz; enables digitization of IF signals in LTE/WiMAX receivers or ultrasound beamforming data paths. |
| SNR @ 70MHz | 70.6dBFS - defines usable dynamic range for high-frequency signal capture; corresponds to ~11.7 effective bits at that frequency. |
| SFDR @ 70MHz | 90dBc - indicates strong spurious-free operation critical for detecting weak signals adjacent to strong interferers in spectrum analyzers. |
| Channel Isolation | 110dB at 100MHz - ensures minimal crosstalk between channels during simultaneous wideband acquisition, essential for dual-channel phased-array or I/Q demodulation. |
| Power Dissipation | 422mW at 80Msps - enables thermally constrained portable instrumentation designs without forced cooling. |
| INL / DNL | ±0.4LSB typ / ±0.2LSB typ - ensures high DC accuracy for calibration-critical applications like precision test equipment or medical imaging front ends. |
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 performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+, AINA− AINB+, AINB− | Differential analog inputs (Ch A/B) | Accept ±0.5V to ±1V differential swing; require matched 100Ω source impedance for optimal SFDR and harmonic suppression. |
| CLKA, CLKB | Independent channel clock inputs | Single-ended TTL/CMOS-compatible; rising-edge triggered; support asynchronous or synchronized dual-channel sampling. |
| DA0–DA11, DB0–DB11 | 12-bit parallel digital outputs (Ch A/B) | Configurable as separate buses or multiplexed via MUX pin; output voltage swing referenced to OVDD (0.5V–3.6V). |
| SHDNA, SHDNB OEA, OEB | Per-channel shutdown & output enable | Enable nap mode (15mW/channel), sleep mode (2mW/channel), or high-Z output states - critical for power-gated multi-ADC systems. |
| MODE | Output format & duty cycle stabilizer control | Selects offset binary/2's complement and enables/disables internal clock duty cycle correction - eliminates external clock conditioning circuitry. |
| SENSEA, SENSEB VCMA, VCMB | Reference programming & common-mode bias | Set input range and provide 1.5V bias; VCMA/VCMB must be bypassed with ≥2.2µF capacitor - directly drives transformer center taps or op-amp common-mode nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ADC cores | Enables true simultaneous sampling of two signals (e.g., I/Q channels or stereo ultrasound beams) without time skew or inter-channel timing drift. |
| Integrated clock duty cycle stabilizer | Allows full 80Msps performance with clock duty cycles from 30% to 70%, eliminating need for external duty cycle correction ICs or complex clock tree design. |
| Flexible digital output interface | MUX pin selects between independent 12-bit buses or shared bus operation - reduces FPGA I/O count and PCB routing complexity in space-constrained designs. |
| Low 0.3LSBRMS transition noise | Minimizes quantization uncertainty in high-resolution measurement applications such as portable oscilloscopes or RF power meters. |
| 110dB channel-to-channel isolation | Prevents signal leakage between channels at RF frequencies - essential for accurate dual-tone testing or MIMO antenna array digitization. |
Applications
| Wireless Base Station Receiver | Ultrasound Imaging Front End |
|---|---|
Use Scenario: Digitizing dual IF signals (I/Q) from zero-IF or low-IF radio architectures in LTE/FDD-TDD base stations. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q data streams at 80Msps with <1ps inter-channel skew. Use Value: 90dB SFDR enables detection of weak user signals adjacent to strong interferers; 110dB isolation prevents I/Q crosstalk-induced image rejection degradation. | Use Scenario: Acquiring echo return signals from multiple transducer elements in portable ultrasound machines. IC Role / Device Role / Timing Role: High-speed digitizer for beamformed analog channels, supporting real-time B-mode and Doppler processing. Use Value: 70.6dB SNR preserves tissue contrast resolution; low 422mW power allows battery-operated handheld form factors without thermal throttling. |
| Spectrum Analyzer Input Stage | Test & Measurement Digitizer |
Use Scenario: Capturing wide instantaneous bandwidth (up to 40MHz) for real-time spectral monitoring in EMI debugging or signal intelligence tools. IC Role / Device Role / Timing Role: Primary ADC in swept-tuned or real-time FFT-based analyzers requiring high spurious-free dynamic range. Use Value: 90dB SFDR ensures accurate amplitude measurement of harmonics and spurs; 575MHz input bandwidth supports direct RF sampling up to VHF band. | Use Scenario: High-accuracy waveform capture in automated test equipment (ATE) for semiconductor validation or power electronics characterization. IC Role / Device Role / Timing Role: Precision digitizer with guaranteed monotonicity and ±0.4LSB INL for traceable calibration against metrology standards. Use Value: No missing codes and low DNL ensure reliable histogram-based linearity verification; 0.3LSBRMS transition noise improves ENOB stability across temperature. |
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 |
|---|---|---|---|
| LTC2299CUP#PBF | 14-bit resolution, same 80Msps rate, identical 64-pin QFN package and pinout - higher dynamic range (73.5dB SNR) but higher power (580mW). | Better suited for applications demanding >12-bit ENOB, e.g., high-end radar digitizers or scientific instrumentation where quantization noise dominates system noise floor. | Select LTC2299CUP#PBF when 14-bit resolution justifies +158mW power increase and board layout accommodates identical footprint. |
| AD9286BCPZ-80 | 80Msps dual 8-bit ADC in 48-lead LFCSP; lower resolution but faster LVDS serial output, smaller package, and lower power (240mW). | Targeted at cost-sensitive, size-constrained applications like portable spectrum sniffers or embedded comms modems where 8-bit depth suffices for envelope detection or coarse FFT analysis. | Choose AD9286BCPZ-80 when system-level SNR budget permits 8-bit quantization and serial interface simplifies FPGA connectivity. |
Compared with LTC2299CUP#PBF and AD9286BCPZ-80, the LTC2294CUP#PBF uniquely balances 12-bit precision, 80Msps throughput, and sub-450mW power in a standard QFN - making it optimal for mid-tier communications and imaging systems where resolution, speed, and thermal constraints intersect.
Availability
LTC2294CUP#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical ultrasound, test equipment, and spectral analysis applications requiring stable component supply and long-term industrial-grade availability.
Supply support for LTC2294CUP#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 LTC2294CUP#PBF belongs to ADI's legacy Linear Technology high-speed ADC product line, engineered specifically for demanding digitization tasks in communications receivers, imaging systems, and instrumentation where AC performance, channel matching, and low power coexist.
FAQ
What is the operating temperature range for the LTC2294CUP#PBF?
The LTC2294CUP#PBF is rated for commercial temperature operation from 0°C to 70°C. This grade is validated per the LTC2294C specification and is distinct from the industrial-grade LTC2294IUP#PBF (–40°C to 85°C). Thermal derating is not required within this range when PCB thermal design meets θJA ≤ 20°C/W per datasheet.
Does the LTC2294CUP#PBF support single-ended analog input?
Yes, the LTC2294CUP#PBF supports single-ended input: drive AIN+ with the signal and tie AIN− to 1.5V (VCMA or VCMB). However, harmonic distortion and INL degrade versus differential drive; SNR and DNL remain unaffected. For best performance, differential drive with matched 100Ω source impedance is strongly recommended.
How does the MODE pin configure output format and clock duty cycle stabilization on the LTC2294CUP#PBF?
The MODE pin on the LTC2294CUP#PBF selects both output coding and clock stabilization: GND = offset binary + DCS off; 1/3 VDD = offset binary + DCS on; 2/3 VDD = 2's complement + DCS on; VDD = 2's complement + DCS off. This dual function eliminates external logic for format selection and clock conditioning.
What is the purpose of the exposed thermal pad (Pin 65) on the LTC2294CUP#PBF?
The exposed pad (Pin 65) on the LTC2294CUP#PBF is electrically and thermally connected to GND. It must be soldered to a PCB copper pour tied to system ground to achieve specified θJA = 20°C/W and ensure stable 80Msps operation. Failure to connect it degrades thermal performance and may cause parametric shift or reliability risk.
Can the LTC2294CUP#PBF operate with separate clock sources for Channel A and Channel B?
Yes, the LTC2294CUP#PBF has independent CLKA and CLKB inputs, allowing fully asynchronous sampling of two channels. When clocks are synchronized, inter-channel skew is minimized (<10ps typical); when asynchronous, each channel operates independently - useful for time-interleaved architectures or multi-sensor trigger alignment.
LTC2294CUP#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:
- 12
- Sampling Rate (Per Second):
- 80M
- 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:
- -
LTC2294CUP#PBF FAQ
1.How can I place an order for LTC2294CUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2294CUP#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 LTC2294CUP#PBF reliable?
The price and inventory of LTC2294CUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2294CUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2294CUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2294CUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2294CUP#PBF?
LTC2294CUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2294CUP#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 LTC2294CUP#PBF?
For technical support, including LTC2294CUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2294CUP#PBF requirements.
6.How does Aetrix verify that LTC2294CUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2294CUP#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 LTC2294CUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2294CUP#PBF?
All LTC2294CUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2294CUP#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 LTC2294CUP#PBF part is unused and in its original packaging.
Return procedure for LTC2294CUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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