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Analog Devices Inc. LTC2247IUH#TRPBF
- Part No.:
- LTC2247IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2247IUH#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,156
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Product details
Overview
LTC2247IUH#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 40Msps low-power pipelined analog-to-digital converter optimized for high-dynamic-range signal digitization in communications and imaging systems. It operates from a single 3V supply (2.7V–3.4V), delivers 74.4dB SNR and 90dB SFDR at 5MHz input, supports ±0.5V to ±1V differential input range, and features clock duty cycle stabilization for robust timing performance.
For engineers reviewing the LTC2247IUH#TRPBF datasheet, LTC2247IUH#TRPBF pinout, LTC2247IUH#TRPBF application, or LTC2247IUH#TRPBF equivalent, this page provides verified specifications, validated pin functions, confirmed use cases in ultrasound and spectral analysis, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The LTC2247IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with internal correction logic, achieving 5-cycle pipeline latency and no missing codes across temperature. Its sample-and-hold front-end offers 575MHz full-power bandwidth and 0.2psRMS aperture jitter, enabling accurate digitization of wideband RF and IF signals up to Nyquist frequency.
It integrates flexible reference control via SENSE and MODE pins, supporting both internal (±0.5V/±1V) and external reference configurations, offset binary or 2's complement output formats, and selectable clock duty cycle stabilization - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with guaranteed no missing codes over –40°C to +85°C |
| Sample Rate | 40Msps - fixed maximum conversion rate; determines real-time bandwidth limit (20MHz Nyquist) |
| SNR | 74.4dB at 5MHz input - defines usable dynamic range for low-noise baseband digitization |
| SFDR | 90dB at 5MHz input - ensures clean spectral representation with minimal harmonic contamination |
| Power Dissipation | 120mW at 40Msps - enables thermal management in space-constrained portable instrumentation |
| Input Bandwidth | 575MHz - supports direct sampling of VHF/UHF signals without external anti-alias filtering |
| INL / DNL | ±1LSB / ±0.5LSB typical - preserves linearity for precision measurement applications like spectral analysis |
Pinout & Package
Package: 32-lead (5mm × 5mm) QFN with exposed thermal pad (Pin 33 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input pair | Accepts ±0.5V to ±1V differential signal; common-mode bias set by VCM (1.5V) or external source |
| REFH, REFL | ADC reference voltage terminals | Shorted pairs requiring 0.1µF + 2.2µF ceramic bypassing; define full-scale range with SENSE pin |
| CLK | Single-ended sampling clock input | Positive-edge-triggered; duty cycle stabilizer (enabled via MODE) relaxes clock source requirements |
| SHDN, OE | Power mode control inputs | Enable nap mode (15mW) or shutdown (2mW); OE controls tri-state output drivers |
| D0–D13 | Parallel digital outputs (14-bit) | MSB = D13; output voltage swing referenced to OVDD (0.5V–3.6V) for interfacing with diverse logic families |
| SENSE, MODE | Reference and format configuration pins | SENSE selects input range (±0.5V/±1V/external); MODE sets output format (offset binary/2's complement) and DCS enable |
| VCM | Internal 1.5V common-mode reference | Provides bias for differential input drive; requires ≥2.2µF local bypass to ground |
| OF | Over/underflow flag output | Active-high indication of input exceeding selected full-scale range - critical for AGC loop feedback |
Key Features
| Feature | Design Value |
|---|---|
| Single 3V supply operation | Eliminates dual-supply design complexity and reduces BOM count in battery-powered portable instruments |
| Flexible input range selection | ±0.5V to ±1V via SENSE pin enables optimization of dynamic range for varying signal amplitudes without external gain stages |
| Clock duty cycle stabilizer | Allows high AC performance with non-50% clock sources (e.g., PLL outputs), reducing need for external duty-cycle correction circuits |
| Nap and shutdown modes | Reduces power to 15mW (nap) or 2mW (shutdown) during idle periods - extends battery life in handheld ultrasound devices |
| 575MHz full-power bandwidth | Supports direct RF sampling up to 200MHz IF without external track-and-hold, simplifying receiver front-end architecture |
Applications
| Ultrasound Imaging | Spectral Analysis Equipment |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers operating at 2.5–10MHz center frequencies. IC Role / Device Role / Timing Role: High-fidelity ADC capturing time-domain waveforms with minimal harmonic distortion for beamforming and Doppler processing. Use Value: 90dB SFDR prevents spurious artifacts from masking low-amplitude tissue echoes; 74.4dB SNR preserves contrast resolution in B-mode imaging. |
Use Scenario: Real-time FFT-based spectrum monitoring in EMI test receivers and RF field analyzers. IC Role / Device Role / Timing Role: Precision digitizer feeding FPGA-based FFT engines with deterministic 40Msps sampling and low aperture jitter. Use Value: 0.2psRMS aperture jitter minimizes frequency bin smearing; no missing codes ensures accurate amplitude calibration across full dynamic range. |
| Portable Communications Test Sets | Industrial Non-Destructive Testing (NDT) |
Use Scenario: Baseband I/Q sampling in handheld LTE/Wi-Fi protocol analyzers performing modulation accuracy verification. IC Role / Device Role / Timing Role: Dual-channel (paired device) ADC capturing complex baseband signals with matched gain/phase for EVM calculation. Use Value: ±0.5LSB DNL guarantees monotonicity required for error vector magnitude compliance testing per 3GPP TS 36.141. |
Use Scenario: Digitizing ultrasonic pulse-echo responses from metal or composite materials in handheld flaw detectors. IC Role / Device Role / Timing Role: High-speed data acquisition engine synchronizing with pulser-receiver modules for time-of-flight measurements. Use Value: 575MHz input bandwidth captures wideband transducer responses without bandwidth-limiting filters; 14-bit resolution enables detection of sub-millimeter defect signatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS5272IPFP | 14-bit, 65Msps; higher power (360mW); LVDS outputs only; no internal reference | Requires external reference and level-shifting for CMOS interfacing; better suited for fixed infrastructure vs. portable designs | Select when higher sample rate and LVDS noise immunity outweigh power and integration trade-offs |
| AD9245BSTZ-40 | 14-bit, 40Msps; 3.3V supply; 72.5dB SNR (typ); no clock duty cycle stabilizer; different pinout | Lacks DCS and flexible reference programming; lower SNR limits dynamic range in low-noise applications | Choose for cost-sensitive industrial data loggers where 2.5dB SNR margin is acceptable and layout reuse is not required |
Compared with ADS5272IPFP and AD9245BSTZ-40, the LTC2247IUH#TRPBF uniquely combines integrated reference, clock duty cycle stabilization, and ultra-low 120mW power at 40Msps - making it optimal for battery-powered, size-constrained test and medical equipment requiring self-contained precision digitization.
Availability
LTC2247IUH#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, ultrasound imaging systems, and spectral analysis equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2247IUH#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2247IUH#TRPBF belongs to the LTC224x family of low-power, high-SFDR pipeline ADCs designed specifically for portable and power-sensitive communications and medical imaging applications demanding precision digitization without external support circuitry.
FAQ
What is the operating temperature range for the LTC2247IUH#TRPBF?
The LTC2247IUH#TRPBF is rated for industrial operation from –40°C to +85°C (I-grade), as confirmed in the Absolute Maximum Ratings table. This range supports deployment in portable medical devices and field-deployable test equipment exposed to ambient temperature extremes without derating.
Does the LTC2247IUH#TRPBF require an external reference voltage?
No - the LTC2247IUH#TRPBF includes an internal 1.5V reference and supports programmable input ranges (±0.5V or ±1V) via the SENSE pin. An external reference can be used if higher accuracy or custom scaling is needed, but it is not required for standard operation of the LTC2247IUH#TRPBF.
How does the clock duty cycle stabilizer in the LTC2247IUH#TRPBF improve system design?
The clock duty cycle stabilizer in the LTC2247IUH#TRPBF allows high AC performance (74.4dB SNR, 90dB SFDR) even with non-50% duty cycle clocks (e.g., from PLLs or dividers), eliminating the need for external duty-cycle correction circuits and reducing board area and component count in the LTC2247IUH#TRPBF-based design.
What is the function of the OF (Over/Under Flow) pin on the LTC2247IUH#TRPBF?
The OF pin on the LTC2247IUH#TRPBF is an active-high output that asserts when the analog input exceeds the selected full-scale range (±0.5V or ±1V), indicating clipping. This signal is used in automatic gain control (AGC) loops to dynamically adjust front-end amplification and prevent data corruption in the LTC2247IUH#TRPBF output stream.
Can the LTC2247IUH#TRPBF interface directly with 1.8V logic systems?
Yes - the LTC2247IUH#TRPBF supports OVDD from 0.5V to 3.6V, including 1.8V. When OVDD = 1.8V, its digital outputs meet 1.8V logic thresholds (VOH ≥ 1.79V, VOL ≤ 0.09V at 1.6mA), enabling direct connection to FPGAs or microcontrollers without level shifters in the LTC2247IUH#TRPBF interface path.
LTC2247IUH#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):
- 40M
- 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:
- -
LTC2247IUH#TRPBF FAQ
1.How can I place an order for LTC2247IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2247IUH#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 LTC2247IUH#TRPBF reliable?
The price and inventory of LTC2247IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2247IUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2247IUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2247IUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2247IUH#TRPBF?
LTC2247IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2247IUH#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 LTC2247IUH#TRPBF?
For technical support, including LTC2247IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2247IUH#TRPBF requirements.
6.How does Aetrix verify that LTC2247IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2247IUH#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 LTC2247IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2247IUH#TRPBF?
All LTC2247IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2247IUH#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 LTC2247IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2247IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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