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Analog Devices Inc. LTC2227IUH#TRPBF
- Part No.:
- LTC2227IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2227IUH#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
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Product details
Overview
LTC2227IUH#TRPBF from Analog Devices (acquired Linear Technology) is a 12-bit, 40Msps low-power 3V analog-to-digital converter optimized for high-dynamic-range signal digitization in communications and imaging systems. It delivers 71.4dB SNR and 90dB SFDR at 5MHz input, ±0.3LSB INL (typ), 575MHz full-power bandwidth, and operates from a single 2.7V–3.4V supply consuming 120mW.
For engineers reviewing the LTC2227IUH#TRPBF datasheet, LTC2227IUH#TRPBF pinout, LTC2227IUH#TRPBF application, or LTC2227IUH#TRPBF equivalent, this page provides verified AC/DC performance data, QFN-32 pin mapping, thermal-grade (-40°C to +85°C) operation context, and validated alternatives for high-fidelity sampling in ultrasound, spectral analysis, and portable instrumentation.
Technical Context
The LTC2227IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with internal clock duty cycle stabilization, enabling consistent 71.4dB SNR across wide input frequency ranges (up to 140MHz) and variable clock duty cycles. Its differential sample-and-hold front-end supports ±0.5V to ±1V input ranges via SENSE pin programming.
It features flexible digital output drivers with independent OVDD (0.5V–3.6V), programmable output format (offset binary or 2's complement via MODE pin), and three power states: active (120mW), nap mode (15mW), and shutdown (2mW). Pipeline latency is fixed at 5 cycles, with aperture jitter of 0.2psRMS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes over temperature |
| Sample Rate | 40Msps - enables real-time digitization of IF signals up to 20MHz Nyquist bandwidth |
| SNR | 71.4dB (typ, 5MHz input) - supports >11.8 effective bits for precision measurement |
| SFDR | 90dB (2nd/3rd harmonic, 5MHz input) - suppresses spurious content critical for spectral purity |
| INL / DNL | ±0.3LSB (typ) / ±0.15LSB (typ) - ensures linearity for calibration-sensitive applications |
| Power Dissipation | 120mW (typ, VDD = 3V) - enables thermally constrained portable and embedded designs |
| Input Bandwidth | 575MHz full-power - preserves fidelity of fast-rising RF/IF transients |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive-adjacent environments |
Pinout & Package
32-pin (5mm × 5mm) plastic QFN package with exposed thermal pad (Pin 33, GND). RoHS-compliant, lead-free finish. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input pair | Accepts ±0.5V to ±1V range; requires matched layout for <80dB CMRR |
| REFH, REFL | High/low reference inputs | Shorted pairs; require 0.1μF + 2.2μF local bypassing for stable reference |
| VDD (Pins 7, 32) | Analog supply | 2.7V–3.4V; each pin must be decoupled with 0.1μF ceramic capacitor |
| CLK | Single-ended sampling clock | Positive-edge triggered; supports duty cycle stabilizer when MODE ≠ GND |
| SHDN, OE | Power mode control | Combination selects active/nap/shutdown; OE controls tri-state output drivers |
| D0–D11 | Parallel digital outputs | MSB = D11; output voltage swing referenced to OVDD (0.5V–3.6V) |
| MODE | Output format & DCS control | GND = offset binary + DCS off; 1/3VDD = offset binary + DCS on |
| SENSE | Input range selection | VCM = ±0.5V range; VDD = ±1V range; external voltage sets ±VSENSE |
| VCM | 1.5V common-mode bias | Low-drift (±25ppm/°C) buffered output; used for single-ended drive reference |
| OF | Over/underflow flag | Active-high pulse indicates clipping; enables real-time signal integrity monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range | Programmable ±0.5V to ±1V via SENSE pin - eliminates external gain stages in multi-range systems |
| Integrated clock duty cycle stabilizer | Enables full 40Msps performance with 40%–60% input clock duty cycle - relaxes clock source requirements |
| Low-power operational modes | 15mW nap mode and 2mW shutdown - extends battery life in portable instrumentation |
| Independent output supply (OVDD) | 0.5V–3.6V logic compatibility - interfaces directly with 1.8V, 2.5V, or 3.3V FPGAs/ASICs without level shifters |
| On-chip 1.5V VCM reference | ±25ppm/°C tempco and 3mV/V line regulation - reduces BOM count in single-ended input configurations |
| 575MHz full-power bandwidth | Preserves signal integrity for wideband IF sampling up to 140MHz - avoids external anti-alias filtering complexity |
Applications
| Ultrasound Imaging | Spectral Analysis Equipment |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers operating at 5–15MHz center frequencies. IC Role / Device Role / Timing Role: High-fidelity analog front-end ADC capturing time-of-flight data with minimal noise floor degradation. Use Value: 71.4dB SNR and 90dB SFDR enable detection of weak tissue echoes amid strong near-field reflections. |
Use Scenario: Real-time FFT-based spectrum monitoring in RF test equipment analyzing 0–20MHz baseband signals. IC Role / Device Role / Timing Role: Precision sampling engine feeding FPGA-based signal processing pipelines. Use Value: ±0.3LSB INL and 5-cycle deterministic latency ensure repeatable amplitude and phase measurements across sweeps. |
| Portable Communication Test Sets | Industrial Process Monitoring |
Use Scenario: Battery-powered field testers verifying LTE/Wi-Fi baseband I/Q channel linearity and EVM. IC Role / Device Role / Timing Role: Low-power, high-SFDR ADC in compact RF demodulation path. Use Value: 120mW active power and 15mW nap mode extend runtime while maintaining >90dB SFDR for modulation accuracy validation. |
Use Scenario: Condition monitoring of rotating machinery using vibration sensors with 1–10kHz bandwidth. IC Role / Device Role / Timing Role: High-linearity digitizer for predictive maintenance analytics requiring long-term DC stability. Use Value: ±10μV/°C offset drift and ±30ppm/°C full-scale drift ensure calibration validity over extended thermal cycles. |
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 | 12-bit, 40Msps, 70dB SNR (typ), 85dB SFDR (typ); requires dual 1.8V/3.3V supplies | Lacks integrated reference and VCM buffer; needs external REF and bias circuitry | Preferred when system already uses TI's PowerPAD™ layout ecosystem and requires JESD204B interface scalability |
| AD9226ASTZ | 12-bit, 65Msps, 72dB SNR (typ), 88dB SFDR (typ); –40°C to +85°C; 48-lead LQFP | Higher speed but larger package and 325mW power; no clock duty cycle stabilizer | Selected when sampling rate headroom is required and board space allows larger footprint |
Compared with ADS5272IPFP and AD9226ASTZ, the LTC2227IUH#TRPBF offers superior integration (on-chip VCM, reference, DCS), lower power per Msps (3mW/Msps vs 8.1mW/Msps and 5mW/Msps), and smaller QFN-32 packaging - making it optimal for space- and thermal-constrained portable instrumentation.
Availability
LTC2227IUH#TRPBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, spectral analysis equipment, portable communication test sets, and industrial process monitoring requiring stable component supply across extended temperature ranges.
Supply support for LTC2227IUH#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2227IUH#TRPBF belongs to Linear Technology's ultra-low-noise, high-SFDR pipeline ADC family designed specifically for demanding wideband digitization in medical imaging, test equipment, and defense electronics where dynamic range and thermal robustness are critical.
FAQ
What is the maximum input frequency supported by the LTC2227IUH#TRPBF before SNR degrades below 70dB?
The LTC2227IUH#TRPBF maintains ≥70.1dB SNR up to 20MHz input frequency (typical, –1dBFS, 2V range), and ≥70dB SNR up to 30MHz. At 70MHz input, SNR drops to 70.9dB (typ), and at 140MHz it is 69.8dB (typ). For designs requiring sustained >70dB SNR, operation below 30MHz input is recommended. The 575MHz full-power bandwidth ensures signal integrity, but thermal and quantization noise dominate SNR roll-off beyond Nyquist.
How does the MODE pin configuration affect the output data format and clock duty cycle stabilizer in the LTC2227IUH#TRPBF?
In the LTC2227IUH#TRPBF, MODE pin voltage determines both output coding and DCS state: GND selects offset binary with DCS disabled; 1/3VDD selects offset binary with DCS enabled; 2/3VDD selects 2's complement with DCS enabled; VDD selects 2's complement with DCS disabled. This dual-function pin eliminates external configuration logic and allows runtime reconfiguration of data alignment and clock tolerance in FPGA-based systems.
Can the LTC2227IUH#TRPBF operate with a single-ended analog input, and what is the impact on harmonic distortion?
Yes, the LTC2227IUH#TRPBF supports single-ended analog input using AIN+ referenced to VCM (Pin 31), with AIN– tied to VCM. However, THD degrades by ~6–10dB compared to differential drive due to reduced common-mode rejection. For example, SFDR drops from 90dB (differential, 5MHz) to ~82–84dB (single-ended). The datasheet explicitly recommends differential drive for optimal AC performance, reserving single-ended use for cost-sensitive applications where modest harmonic degradation is acceptable.
What is the purpose of the OF (Over/Under Flow) pin on the LTC2227IUH#TRPBF, and how is it timed relative to conversion?
The OF pin on the LTC2227IUH#TRPBF is an asynchronous, active-high flag that pulses for one CLK cycle whenever the analog input exceeds the selected full-scale range (±VSENSE), indicating clipping. It asserts synchronously with the data output - i.e., OF goes high on the same CLK edge that presents the clipped code on D0–D11. This enables real-time signal integrity monitoring without additional latency, allowing host processors to trigger gain adjustment or alert conditions immediately upon overflow detection.
Does the LTC2227IUH#TRPBF require external reference components, or is the reference fully integrated?
The LTC2227IUH#TRPBF integrates a precision 1.5V bandgap reference and internal reference buffer, eliminating the need for external reference ICs. REFH and REFL pins are intended for optional external reference connection only; when using the internal reference (default), REFH and REFL must be shorted together and bypassed to ground with 0.1μF + 2.2μF capacitors as specified. The internal reference supports ±0.5V or ±1V input ranges via SENSE pin, and exhibits ±30ppm/°C drift - sufficient for most portable and industrial applications without calibration.
LTC2227IUH#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:
- 12
- 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:
- -
LTC2227IUH#TRPBF FAQ
1.How can I place an order for LTC2227IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2227IUH#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 LTC2227IUH#TRPBF reliable?
The price and inventory of LTC2227IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2227IUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2227IUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2227IUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2227IUH#TRPBF?
LTC2227IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2227IUH#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 LTC2227IUH#TRPBF?
For technical support, including LTC2227IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2227IUH#TRPBF requirements.
6.How does Aetrix verify that LTC2227IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2227IUH#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 LTC2227IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2227IUH#TRPBF?
All LTC2227IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2227IUH#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 LTC2227IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2227IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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