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Analog Devices Inc. LTC2246IUH#TRPBF
- Part No.:
- LTC2246IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2246IUH#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,603
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Product details
Overview
LTC2246IUH#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 25Msps low-power analog-to-digital converter optimized for high-dynamic-range signal digitization in constrained thermal environments. It operates from a single 3V supply (2.7V–3.4V), consumes only 75mW typical power, delivers 74.5dB SNR and 90dB SFDR at 5MHz input, and features no missing codes over temperature - making it suitable for portable ultrasound front-ends and battery-powered spectral analyzers.
For engineers reviewing the LTC2246IUH#TRPBF datasheet, LTC2246IUH#TRPBF pinout, LTC2246IUH#TRPBF application, or LTC2246IUH#TRPBF equivalent, key selection criteria include its guaranteed ±1LSB INL, 575MHz full-power bandwidth, flexible ±0.5V to ±1V differential input range, clock duty cycle stabilizer support, and compatibility with 1.8V/2.5V/3.3V logic outputs via separate OVDD rail.
Technical Context
The LTC2246IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with integrated sample-and-hold, correction logic, and output drivers. Its analog input path supports differential drive with 1.5V common-mode bias (VCM pin), and internal reference configuration enables ±0.5V or ±1V input ranges via SENSE pin voltage selection.
Timing is controlled by a single-ended CLK input with programmable duty cycle stabilization (enabled via MODE pin). The device exhibits 5-cycle pipeline latency, 1.4ns–5.4ns CLK-to-data delay, and aperture jitter of 0.2psRMS - enabling precise time-domain sampling for coherent signal acquisition in imaging and instrumentation systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit, no missing codes - ensures monotonicity and unambiguous digital representation across full operating temperature range (–40°C to +85°C). |
| Sample Rate | 25Msps - fixed maximum conversion rate; determines Nyquist frequency (12.5MHz) and real-time bandwidth for baseband digitization. |
| SNR @ 5MHz | 74.5dB (typ) - defines minimum detectable signal level above quantization and thermal noise floor in narrowband applications. |
| SFDR @ 5MHz | 90dB (typ) - indicates suppression of harmonics and spurs, critical for multi-tone communication and spectral analysis fidelity. |
| Power Dissipation | 75mW (typ) at 25Msps - enables thermally constrained PCB layouts and extends battery life in portable instrumentation. |
| Input Bandwidth | 575MHz full-power - supports wideband RF sampling up to ~140MHz input while maintaining >70dB SFDR. |
| INL / DNL | ±1LSB / ±0.5LSB (typ) - guarantees accurate amplitude linearity for precision measurement and calibration-critical systems. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN (UH package); exposed pad (Pin 33) must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input pair | Accepts ±0.5V to ±1V swing around 1.5V common mode; requires matched layout for optimal CMRR and harmonic rejection. |
| REFH, REFL | ADC reference voltage terminals | Shorted pairs requiring 0.1µF + 2.2µF ceramic bypassing; define full-scale range with internal or external reference. |
| CLK | Single-ended sampling clock input | Positive-edge triggered; supports duty cycle stabilization when MODE pin is biased to 1/3 VDD or 2/3 VDD. |
| SHDN, OE | Power management control inputs | Enable nap mode (SHDN=H, OE=L) drawing 15mW or shutdown (SHDN=H, OE=H) drawing 2mW - critical for power cycling. |
| D0–D13 | 14-bit parallel CMOS digital outputs | MSB = D13; output voltage levels configurable via OVDD (0.5V–3.6V) to interface directly with FPGA or ASIC I/O banks. |
| SENSE | Reference and input range programming | Voltage-selectable: GND → ±0.5V range; VDD → ±1V range; external 0.5V–1V → ±VSENSE range. |
| VCM | 1.5V common-mode bias output | Provides stable 1.5V reference for differential driver circuits; requires ≥2.2µF local bypass to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range | Configurable ±0.5V to ±1V differential input via SENSE pin - eliminates external gain stages for varying sensor output amplitudes. |
| Clock duty cycle stabilizer | On-chip circuit compensates for non-50% CLK duty cycles - preserves AC performance without external clock conditioning hardware. |
| Low-power operation | 75mW at 25Msps with 3V analog supply and independent OVDD - reduces thermal load and simplifies heatsinking in dense assemblies. |
| High dynamic range | 74.5dB SNR + 90dB SFDR at 5MHz - enables detection of weak signals adjacent to strong interferers in spectral monitoring. |
| Robust DC accuracy | ±1LSB INL and ±0.5LSB DNL over –40°C to +85°C - supports factory calibration and long-term measurement stability without recalibration. |
Applications
| Ultrasound Imaging Front-End | Portable Spectrum Analyzer |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary ADC capturing 5–15MHz broadband RF echoes with minimal added noise or distortion. Use Value: 74.5dB SNR enables detection of low-amplitude tissue boundaries; 575MHz bandwidth preserves pulse fidelity for time-of-flight calculations. |
Use Scenario: Real-time frequency domain analysis in field-deployable EMI test equipment. IC Role / Device Role / Timing Role: High-fidelity digitizer feeding FFT engine in battery-powered spectrum analyzer with 12.5MHz real-time bandwidth. Use Value: 90dB SFDR prevents spur masking of low-level emissions; 75mW power allows >4-hour operation on Li-ion pack. |
| Industrial Process Monitoring | Communications Test Equipment |
Use Scenario: Capturing vibration signatures from rotating machinery for predictive maintenance analytics. IC Role / Device Role / Timing Role: Low-noise ADC in edge node sensor aggregator digitizing accelerometer outputs up to 10kHz. Use Value: ±1LSB INL ensures repeatable amplitude tracking across temperature; nap mode reduces idle power during sleep intervals. |
Use Scenario: Intermediate-frequency sampling in benchtop vector signal analyzers supporting 802.11ac and LTE waveforms. IC Role / Device Role / Timing Role: IF digitizer sampling at 25Msps to capture 10MHz-wide channelized signals with high spur-free resolution. Use Value: No missing codes guarantees glitch-free data streams for demodulation; OVDD flexibility interfaces directly with Xilinx Zynq PS I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPM | 16-bit, 100ksps SAR ADC; 92dB SNR but 10× slower sampling rate; requires external reference and driver. | Better DC precision for static measurements; unsuitable for real-time RF or ultrasound waveform capture. | Select for high-accuracy data loggers where speed is secondary to resolution and integral linearity. |
| AD9249BCPZ-65 | 14-bit, 65Msps pipelined ADC; 75.5dB SNR, 90dB SFDR; 3.3V supply; larger 72-lead LFCSP package. | Higher speed and identical AC specs, but 205mW power and incompatible pinout/package. | Select when system requires >25Msps throughput and board space permits larger footprint and higher thermal budget. |
Compared with ADS8588SIPM and AD9249BCPZ-65, the LTC2246IUH#TRPBF uniquely balances 25Msps real-time sampling, 75mW ultra-low power, and 5mm × 5mm QFN packaging - making it optimal for size- and battery-constrained embedded digitizers where moderate speed suffices.
Availability
LTC2246IUH#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial process monitoring, and communications test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for LTC2246IUH#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 LTC2246IUH#TRPBF belongs to ADI's legacy Linear Technology high-speed precision ADC product line, engineered specifically for demanding digitization tasks in resource-constrained embedded systems where power, size, and AC performance must coexist.
FAQ
What is the operating temperature range for the LTC2246IUH#TRPBF?
The LTC2246IUH#TRPBF is rated for industrial operation from –40°C to +85°C (I-grade), as confirmed in the Absolute Maximum Ratings table and validated across all dynamic and DC specifications in the datasheet. This range supports deployment in outdoor instrumentation and factory-floor equipment without derating.
Does the LTC2246IUH#TRPBF require an external reference voltage?
No - the LTC2246IUH#TRPBF includes an internal 1.5V reference and supports both internal and external reference configurations. When SENSE is tied to VCM, it uses the internal reference for ±0.5V input range; connecting SENSE to VDD selects ±1V range. External references (0.5V–1V) are also supported for custom scaling.
How does the clock duty cycle stabilizer function in the LTC2246IUH#TRPBF?
The LTC2246IUH#TRPBF's clock duty cycle stabilizer is enabled by biasing the MODE pin to 1/3 VDD or 2/3 VDD. It actively corrects non-50% CLK duty cycles internally, preserving SNR and SFDR performance without requiring external clock conditioners - verified in Figure 2247 G12 of the datasheet.
Can the LTC2246IUH#TRPBF interface directly with 1.8V FPGA I/O banks?
Yes - the LTC2246IUH#TRPBF features a separate OVDD supply pin (Pin 21) that accepts 0.5V to 3.6V. Setting OVDD = 1.8V configures all D0–D13 outputs and OF pin to 1.8V CMOS levels, enabling direct connection to Xilinx Artix-7 or Intel Cyclone V I/O banks without level shifters.
What is the significance of "no missing codes" in the LTC2246IUH#TRPBF specification?
"No missing codes" means the LTC2246IUH#TRPBF guarantees monotonic transfer function across its entire 14-bit range (0 to 16383) over temperature and supply variations. This eliminates code gaps that could cause data corruption in closed-loop control or real-time waveform reconstruction - a requirement for medical and test equipment compliance.
LTC2246IUH#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 25M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.4V
- Voltage - Supply, Digital:
- 2.7V ~ 3.4V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2246IUH#TRPBF FAQ
1.How can I place an order for LTC2246IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2246IUH#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 LTC2246IUH#TRPBF reliable?
The price and inventory of LTC2246IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2246IUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2246IUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2246IUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2246IUH#TRPBF?
LTC2246IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2246IUH#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 LTC2246IUH#TRPBF?
For technical support, including LTC2246IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2246IUH#TRPBF requirements.
6.How does Aetrix verify that LTC2246IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2246IUH#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 LTC2246IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2246IUH#TRPBF?
All LTC2246IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2246IUH#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 LTC2246IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2246IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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