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Analog Devices Inc. LTC2296IUP#PBF
- Part No.:
- LTC2296IUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2296IUP#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,206
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Product details
Overview
LTC2296IUP#PBF from Analog Devices (formerly Linear Technology) is a dual 14-bit, 25Msps low-power analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 74.5dB SNR and 90dB SFDR at 5MHz input with ±1.2LSB INL and 110dB channel isolation at 100MHz. It serves as a high-fidelity digitizer in portable instrumentation and spectral analysis systems requiring precise dual-channel synchronization.
For engineers reviewing the LTC2296IUP#PBF datasheet, LTC2296IUP#PBF pinout, LTC2296IUP#PBF application, or LTC2296IUP#PBF equivalent, key selection criteria include its 25Msps 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 support for shutdown/nap modes to reduce system power.
Technical Context
The LTC2296IUP#PBF implements a six-stage CMOS pipelined ADC architecture with internal 1.5V reference buffers (VCMA/VCMB), programmable input range via SENSEA/SENSEB pins, and independent channel control logic for SHDN/SHDNB and OE/OEB. Its clock duty cycle stabilizer (enabled via MODE pin) ensures consistent timing performance across wide duty cycle variations.
Each channel features dedicated analog input pairs (AINA±, AINB±), separate reference networks (REFHA/REFLA, REFHB/REFLB), and fully independent digital output drivers with OVDD-supplied logic levels (0.5V–3.6V). The device supports both offset binary and 2's complement output formats, selectable via the MODE pin.
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. |
| Sample Rate | 25Msps per channel - enables real-time capture of signals up to 12.5MHz Nyquist bandwidth. |
| SNR | 74.5dB at 5MHz input - delivers >12.3 effective bits for high-fidelity signal reconstruction. |
| SFDR | 90dB at 5MHz input - suppresses spurious content critical for spectral purity in communications and imaging. |
| Power Dissipation | 150mW at 25Msps (both channels active) - enables battery-powered or thermally constrained embedded designs. |
| Input Bandwidth | 575MHz full-power - supports wideband RF sampling without external anti-alias filtering for baseband applications. |
| Channel Isolation | 110dB at 100MHz - prevents crosstalk-induced errors in dual-signal acquisition like I/Q demodulation. |
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 integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+, AINA– | Channel A differential analog input | Accepts ±0.5V to ±1V differential signal; requires matched routing and common-mode bias via VCMA. |
| CLKA, CLKB | Independent sample clock inputs | Positive-edge triggered; each controls its respective channel's sampling instant for asynchronous operation. |
| DA0–DA13, DB0–DB13 | Dual 14-bit parallel digital outputs | MSB-first, configurable for multiplexed (shared bus) or separate bus operation via MUX pin. |
| SHDNA, SHDNB | Per-channel shutdown control | Enables independent power gating: nap mode (15mW/channel) or shutdown (2mW/channel). |
| MODE | Output format & duty cycle stabilizer select | Configures offset binary/2's complement output and enables/disables internal clock conditioning circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ADC cores | Enables simultaneous sampling of two signals (e.g., I/Q channels) with guaranteed matching (±0.3% gain, ±2mV offset). |
| Flexible input range programming | SENSEA/SENSEB pins allow ±0.5V, ±1V, or user-defined ±VSENSE ranges - simplifies front-end design across sensor types. |
| Low-jitter aperture delay | 0.2psRMS jitter - preserves SNR at high input frequencies (e.g., 70MHz input retains 73.4dB SNR). |
| Separate output supply (OVDD) | Supports 0.5V–3.6V logic interface - allows direct connection to FPGA I/O banks or microcontroller peripherals without level shifters. |
| Integrated clock duty cycle stabilizer | Compensates for asymmetric clock waveforms - eliminates need for external duty cycle correction circuits in PLL-based systems. |
Applications
| Portable Instrumentation | Spectral Analysis |
|---|---|
Use Scenario: Handheld spectrum analyzers and field-deployable signal analyzers requiring low power and high dynamic range. IC Role / Device Role / Timing Role: Dual-channel digitizer capturing I/Q baseband signals for FFT-based frequency-domain analysis. Use Value: 90dB SFDR enables detection of weak signals adjacent to strong interferers; 150mW total power extends battery life. | Use Scenario: Real-time RF spectrum monitoring in EMI testing and wireless coexistence validation. IC Role / Device Role / Timing Role: High-fidelity ADC front-end feeding FPGA-based digital downconverters and FFT engines. Use Value: 110dB channel isolation prevents leakage between reference and test channels; 575MHz input bandwidth captures wide instantaneous bandwidths. |
| Imaging Systems | Wired Broadband Communication |
Use Scenario: Ultrasound beamforming modules and industrial X-ray detector readout electronics. IC Role / Device Role / Timing Role: Synchronized dual-channel digitization of echo return signals for time-of-flight computation. Use Value: ±1.2LSB INL ensures accurate amplitude mapping across pixel arrays; pipeline latency of 5 cycles enables deterministic timing alignment. | Use Scenario: DOCSIS 3.1 cable modem upstream receivers and PON optical line terminal analog front-ends. IC Role / Device Role / Timing Role: Digitizing multi-tone upstream signals (e.g., SC-QAM) with minimal intermodulation distortion. Use Value: 74.5dB SNR at 5MHz and 90dB SFDR meet DOCSIS spectral mask requirements; independent CLKA/CLKB supports TDD/FDD timing flexibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2297IUP#PBF | Higher 40Msps sample rate; 235mW power; identical 14-bit resolution and QFN-64 package. | Required where Nyquist bandwidth >12.5MHz (e.g., wider IF sampling in comms). | Select when system clock budget supports higher throughput and thermal design accommodates +85mW. |
| ADS52J90IRGCT | Texas Instruments 16-bit, 65Msps dual ADC; 1.8V/3.3V supplies; JESD204B serial interface instead of parallel. | Used in high-density FPGA-based systems where board space and routing complexity favor serial interface. | Choose for JESD204B ecosystem compatibility and higher resolution, accepting increased layout complexity and FPGA resource usage. |
Compared with LTC2297IUP#PBF and ADS52J90IRGCT, the LTC2296IUP#PBF offers optimal balance of power efficiency (150mW), proven 14-bit AC performance at 25Msps, and simple parallel interfacing-making it ideal for cost-sensitive, thermally constrained portable and industrial instrumentation where 12.5MHz bandwidth suffices.
Availability
LTC2296IUP#PBF is available at Aetrix Electronics and suitable for portable instrumentation, spectral analysis, and imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2296IUP#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 LTC2296IUP#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding dual-channel digitization in portable test equipment, medical imaging, and broadband communications infrastructure where low power, high SNR, and channel matching are critical.
FAQ
What is the operating temperature range for the LTC2296IUP#PBF?
The LTC2296IUP#PBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" grade suffix in the part number. This range is validated across all key specifications including SNR, SFDR, INL, and power consumption, making it suitable for deployment in uncontrolled environments such as field instruments and outdoor telecom equipment.
How does the MODE pin configure output format and clock stabilization on the LTC2296IUP#PBF?
The MODE pin on the LTC2296IUP#PBF selects both output coding and clock duty cycle stabilization: GND = offset binary + DCS off; 1V (≈1/3 VDD) = offset binary + DCS on; 2V (≈2/3 VDD) = 2's complement + DCS on; VDD = 2's complement + DCS off. This dual-function pin reduces external control lines while enabling robust timing in systems with imperfect clock sources.
Can the LTC2296IUP#PBF operate with a single-ended analog input?
Yes, the LTC2296IUP#PBF supports single-ended analog inputs, though differential drive is recommended for optimal harmonic distortion and common-mode rejection. When using single-ended inputs, the common-mode voltage must be set between 0.5V and 2.0V (per datasheet Note 7), and SNR/SFDR will be 1–2dB lower than with differential signaling due to reduced noise immunity.
What is the purpose of the SENSEA and SENSEB pins on the LTC2296IUP#PBF?
The SENSEA and SENSEB pins on the LTC2296IUP#PBF program the full-scale differential input range per channel: connecting to VCMA (1.5V) selects ±0.5V range; to VDD (3V) selects ±1V range; or to an external voltage (0.5V–1.0V) selects ±VSENSE. This eliminates external gain-setting resistors and allows dynamic range optimization for varying sensor outputs without hardware changes.
Does the LTC2296IUP#PBF require external reference components?
No, the LTC2296IUP#PBF integrates a precision 1.5V reference and associated buffers (VCMA/VCMB), eliminating the need for external reference ICs. However, external 0.1µF and 2.2µF ceramic bypass capacitors are mandatory on all REFH/REFL pins per the datasheet layout guidelines to ensure stability and optimal AC performance.
LTC2296IUP#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):
- 25M
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2296IUP#PBF FAQ
1.How can I place an order for LTC2296IUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2296IUP#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 LTC2296IUP#PBF reliable?
The price and inventory of LTC2296IUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2296IUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2296IUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2296IUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2296IUP#PBF?
LTC2296IUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2296IUP#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 LTC2296IUP#PBF?
For technical support, including LTC2296IUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2296IUP#PBF requirements.
6.How does Aetrix verify that LTC2296IUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2296IUP#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 LTC2296IUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2296IUP#PBF?
All LTC2296IUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2296IUP#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 LTC2296IUP#PBF part is unused and in its original packaging.
Return procedure for LTC2296IUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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