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Analog Devices Inc. LTC2238IUH#TRPBF
- Part No.:
- LTC2238IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2238IUH#TRPBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
LTC2238IUH#TRPBF from Analog Devices (acquired Linear Technology) is a 10-bit, 65Msps low-power pipelined analog-to-digital converter operating from a single 3V supply. It delivers 61.8dB SNR and 85dB SFDR at Nyquist, features 575MHz full-power bandwidth, clock duty cycle stabilization, and shutdown/nap modes. It targets high-fidelity digitization in ultrasound imaging and broadband communications.
For engineers reviewing the LTC2238IUH#TRPBF datasheet, LTC2238IUH#TRPBF pinout, LTC2238IUH#TRPBF application, or LTC2238IUH#TRPBF equivalent, key selection criteria include its guaranteed no-missing-codes performance, ±0.1LSB typical INL over temperature, flexible 1VP-P to 2VP-P input range, and compatibility with differential or single-ended analog drive schemes.
Technical Context
The LTC2238IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with integrated sample-and-hold, correction logic, and output drivers. Its internal clock/duty cycle control enables stable operation across wide input clock duty cycles without external conditioning.
It supports both offset binary and 2's complement output formats via the MODE pin, and uses a programmable reference system-internal 1.5V VCM or external reference-allowing ±0.5V to ±1V differential input ranges. The SENSE pin selects full-scale range while VCM provides common-mode bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, no missing codes - ensures monotonic transfer function for precision measurement systems. |
| Sampling Rate | 65Msps - supports Nyquist-limited signal capture up to 32.5MHz with minimal aliasing risk. |
| SNR | 61.8dB at 5MHz input - defines dynamic range usable for high-fidelity baseband digitization. |
| SFDR | 85dB at 5MHz input - indicates strong suppression of harmonics and spurs in spectral analysis. |
| Power Dissipation | 205mW at 65Msps - enables thermally constrained portable or multi-channel designs. |
| Input Bandwidth | 575MHz full-power bandwidth - allows accurate sampling of fast-rising RF or pulse signals. |
| INL / DNL | ±0.5LSB max INL, ±0.5LSB max DNL - guarantees linearity critical for calibration-sensitive instrumentation. |
Pinout & Package
32-lead (5mm × 5mm) QFN package 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 or external source. |
| CLK | Single-ended sampling clock input | Positive-edge triggered; duty cycle stabilizer active when MODE = 1/3 VDD or 2/3 VDD. |
| SHDN, OE | Power mode control inputs | Enable shutdown (2mW), nap (15mW), or normal operation with output enable/disable. |
| D0–D9 | Parallel digital outputs (D9 = MSB) | Configurable offset binary or 2's complement; OVDD supports 0.5V–3.6V logic interfacing. |
| REFH, REFL | ADC reference voltage terminals | Shorted pairs requiring 0.1µF + 2.2µF bypassing; define full-scale range with SENSE pin. |
| SENSE, VCM | Reference programming and bias output | SENSE selects input range; VCM provides stable 1.5V ±25ppm/°C bias for differential drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range | 1VP-P to 2VP-P selectable via SENSE pin - eliminates external gain stages in multi-signal-level systems. |
| Low aperture jitter | 0.2psRMS - preserves SNR at high input frequencies (e.g., >30MHz) without external jitter cleanup. |
| Internal 1.5V reference | VCM output with ±25ppm/°C tempco - reduces BOM count and layout complexity vs. external reference ICs. |
| Power management modes | Shutdown (2mW) and nap (15mW) - extends battery life in portable ultrasound or handheld spectrum analyzers. |
| CMOS-compatible outputs | OVDD-adjustable (0.5V–3.6V) parallel interface - interfaces directly with FPGAs, ASICs, or microcontrollers. |
Applications
| Ultrasound Imaging Front-End | Broadband Wireless Receiver |
|---|---|
Use Scenario: Digitizing echo return signals from 5–15MHz transducer arrays in portable ultrasound machines. IC Role / Device Role / Timing Role: Primary ADC capturing time-of-flight data with sub-ns timing accuracy and minimal harmonic distortion. Use Value: 61.8dB SNR and 85dB SFDR preserve contrast resolution and tissue differentiation in B-mode imaging. |
Use Scenario: Baseband I/Q sampling in LTE/WiMAX femtocell receivers handling 20MHz channel bandwidths. IC Role / Device Role / Timing Role: Dual-path (I/Q) ADC in zero-IF or low-IF receiver chain, synchronized to local oscillator. Use Value: 575MHz input bandwidth supports direct sampling of IF signals up to 70MHz without image-reject filtering. |
| Spectral Analysis Instrumentation | Portable Digital Oscilloscope |
Use Scenario: High-resolution FFT-based frequency domain analysis in handheld spectrum analyzers for EMI diagnostics. IC Role / Device Role / Timing Role: Core digitizer enabling real-time 8192-point FFT with <10ns aperture uncertainty. Use Value: No missing codes and ±0.5LSB INL ensure amplitude fidelity across full dynamic range for calibrated measurements. |
Use Scenario: 100MHz-bandwidth acquisition front-end in battery-powered 1GS/s oscilloscopes with 12-bit equivalent ENOB. IC Role / Device Role / Timing Role: High-speed ADC paired with FPGA-based decimation and display pipeline. Use Value: 205mW power at 65Msps enables multi-channel simultaneous sampling without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9215BRUZ-65 | 10-bit, 65Msps, 1.8V supply, 145mW; no internal reference or duty cycle stabilizer. | Requires external reference and clock conditioning; better suited for ultra-low-voltage embedded systems. | Select when system already provides precision 1.8V rails and clock cleanup circuitry exists. |
| LTC2228IUH#TRPBF | 12-bit, 65Msps, same package and pinout; 245mW, 69.5dB SNR, 88dB SFDR. | Higher resolution but higher power and cost; identical footprint enables drop-in upgrade path. | Select when 12-bit ENOB is required and thermal budget allows +40mW dissipation. |
Compared with AD9215BRUZ-65, LTC2238IUH#TRPBF integrates reference and clock stabilization, reducing component count; compared with LTC2228IUH#TRPBF, it trades 2 bits of resolution for 40mW lower power and lower cost in size-constrained medical or test equipment.
Availability
LTC2238IUH#TRPBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, broadband wireless infrastructure, and portable spectral analysis instruments requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC2238IUH#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. (including former Linear Technology products) designs precision analog, mixed-signal, and RF ICs for demanding industrial, automotive, and communications applications.
The LTC2238IUH#TRPBF belongs to the LTC22xx family of low-power, high-SFDR pipeline ADCs engineered specifically for medical imaging, test equipment, and communications receivers where noise floor and spur suppression are critical.
FAQ
What is the operating temperature range for LTC2238IUH#TRPBF?
The LTC2238IUH#TRPBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" grade suffix. This makes it suitable for deployment in outdoor base stations, portable diagnostic devices, and factory-floor test equipment where ambient temperatures exceed commercial-grade limits.
Does LTC2238IUH#TRPBF require an external reference voltage?
No - the LTC2238IUH#TRPBF includes an internal 1.5V reference (VCM pin) and supports fully self-contained operation. External references can be applied via REFL/REFH pins only if higher precision or custom full-scale range is needed; the SENSE pin configures input range accordingly.
How does the MODE pin affect LTC2238IUH#TRPBF functionality?
The MODE pin on LTC2238IUH#TRPBF selects both output data format (offset binary or 2's complement) and clock duty cycle stabilizer state. Ground = offset binary + stabilizer off; 1/3 VDD = offset binary + stabilizer on; 2/3 VDD = 2's complement + stabilizer on; VDD = 2's complement + stabilizer off.
What is the purpose of the OF (Over/Under Flow) pin on LTC2238IUH#TRPBF?
The OF pin on LTC2238IUH#TRPBF asserts high when the analog input exceeds the selected full-scale range - either overrange (exceeds +FS) or underrange (falls below –FS). This flag enables real-time gain adjustment or clipping detection in closed-loop signal chains.
Can LTC2238IUH#TRPBF operate with single-ended analog inputs?
Yes - LTC2238IUH#TRPBF supports single-ended drive: connect AIN+ to signal and AIN– to VCM (1.5V). However, this degrades harmonic distortion and INL; SNR and DNL remain unaffected. Differential drive is recommended for optimal SFDR and linearity.
LTC2238IUH#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:
- 10
- Sampling Rate (Per Second):
- 65M
- 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:
- -
LTC2238IUH#TRPBF FAQ
1.How can I place an order for LTC2238IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2238IUH#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 LTC2238IUH#TRPBF reliable?
The price and inventory of LTC2238IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2238IUH#TRPBF is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2238IUH#TRPBF transactions.
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4.How is shipping managed for LTC2238IUH#TRPBF?
LTC2238IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2238IUH#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 LTC2238IUH#TRPBF?
For technical support, including LTC2238IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2238IUH#TRPBF requirements.
6.How does Aetrix verify that LTC2238IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2238IUH#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 LTC2238IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2238IUH#TRPBF?
All LTC2238IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2238IUH#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 LTC2238IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2238IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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