My Inquiry
My Account
Analog Devices Inc. LTC2239IUH#PBF
- Part No.:
- LTC2239IUH#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2239IUH#PBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:164
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2239IUH#PBF from Analog Devices (formerly Linear Technology) is a 10-bit, 80Msps low-noise pipelined analog-to-digital converter operating from a single 3V supply. It delivers 61.6dB SNR and 85dB SFDR at 70MHz input frequency with ±0.1LSB typical INL/DNL, and is designed for high-fidelity digitization in ultrasound imaging and broadband communications systems.
For engineers reviewing the LTC2239IUH#PBF datasheet, LTC2239IUH#PBF pinout, LTC2239IUH#PBF application, or LTC2239IUH#PBF equivalent, key selection criteria include its 575MHz full-power bandwidth, clock duty cycle stabilizer, flexible 1VP-P to 2VP-P input range, and 32-pin QFN package with exposed thermal pad.
Technical Context
The LTC2239IUH#PBF implements a six-stage CMOS pipelined ADC architecture with integrated sample-and-hold, correction logic, and output drivers. Its analog front end supports differential or single-ended inputs with programmable common-mode bias via the VCM pin and configurable reference range via the SENSE pin.
It features a dedicated clock duty cycle stabilizer, shutdown and nap modes consuming only 2mW and 15mW respectively, and separate OVDD supply enabling interfacing with 0.5V–3.6V logic families. The device achieves 0.08LSBRMS transition noise and maintains no missing codes across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with guaranteed no missing codes - ensures monotonicity and deterministic code mapping for precision measurement. |
| Sample Rate | 80Msps - supports Nyquist bandwidth up to 40MHz, suitable for IF sampling in wireless receivers. |
| SNR @ 70MHz | 61.6dBFS - enables >10-bit effective resolution for high-frequency signal capture in spectral analysis. |
| SFDR @ 70MHz | 85dBc - suppresses spurious content critical for multi-tone communication and radar applications. |
| Full Power BW | 575MHz - preserves amplitude fidelity for wideband RF/IF inputs without external anti-alias filtering. |
| Power Dissipation | 211mW at 80Msps - balances performance and thermal load in space-constrained portable instrumentation. |
| INL / DNL | ±0.5LSB max over temperature - ensures accurate amplitude linearity in medical imaging and test equipment. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN with exposed thermal pad (Pin 33 = GND), RoHS-compliant lead-free finish (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts ±0.5V to ±1V range; requires matched 100Ω source impedance for optimal SFDR. |
| REFH, REFL | Reference voltage terminals | Must be shorted in pairs and bypassed with 0.1µF + 2.2µF ceramics to minimize reference noise. |
| VDD (Pins 7, 32) | Analog supply | 2.7V–3.4V operation; bypass each pin individually to GND with 0.1µF ceramic capacitor. |
| CLK | Sampling clock input | Single-ended CMOS/TTL-compatible; rising edge initiates sample acquisition. |
| SHDN, OE | Power management control | Combination selects normal, nap (15mW), or shutdown (2mW) mode with tri-state outputs. |
| D0–D9 | Parallel digital outputs | MSB-first offset binary or 2's complement format; driven by separate OVDD (0.5V–3.6V). |
| SENSE | Input range programming | Tie to VDD for ±1V range, VCM for ±0.5V range, or external voltage for intermediate ranges. |
| VCM | 1.5V common-mode reference | Provides bias for differential drivers; must be bypassed with ≥2.2µF ceramic to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range | Programmable 1VP-P or 2VP-P differential input via SENSE pin - optimizes dynamic range for varying signal amplitudes. |
| Clock duty cycle stabilizer | Enables full 80Msps performance across wide input clock duty cycles (5%–95%) - relaxes clock generation requirements. |
| Low transition noise | 0.08LSBRMS - minimizes quantization uncertainty in high-resolution measurement applications. |
| Separate output supply | OVDD supports 0.5V–3.6V logic interfaces - simplifies integration with FPGA I/O banks or mixed-voltage systems. |
| Thermal management | Exposed pad (Pin 33) soldered to PCB ground plane - reduces θJA to 34°C/W for stable operation at full speed. |
Applications
| Ultrasound Imaging | Wireless Base Stations |
|---|---|
Use Scenario: Digitizing RF echo signals from phased-array transducers at 40–60MHz center frequencies. IC Role / Device Role / Timing Role: High-speed ADC capturing time-of-flight data with sub-nanosecond aperture jitter tolerance. Use Value: 61.6dB SNR preserves weak tissue boundary reflections; 575MHz bandwidth avoids pre-filtering loss in wideband beamforming. |
Use Scenario: IF sampling of LTE/WiMAX signals in remote radio heads with 20–40MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Direct-conversion receiver ADC handling multi-carrier modulation with minimal adjacent channel interference. Use Value: 85dB SFDR prevents intermodulation distortion from strong interferers; low power enables dense RF module layouts. |
| Portable Spectrum Analyzers | High-Speed Data Acquisition |
Use Scenario: Real-time FFT-based signal monitoring in handheld field test equipment covering DC–100MHz. IC Role / Device Role / Timing Role: Core digitizer providing 80Msps streaming to FPGA-based processing pipeline. Use Value: No missing codes ensures accurate amplitude histogramming; 0.08LSBRMS noise enables precise noise floor measurement. |
Use Scenario: Precision waveform capture in automated test equipment for semiconductor validation. IC Role / Device Role / Timing Role: High-fidelity digitizer synchronized to external trigger with deterministic 5-cycle latency. Use Value: ±0.5LSB INL guarantees traceable calibration; shutdown mode reduces system standby power by >99%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2238IUH#PBF | 65Msps sample rate, identical 10-bit resolution and pinout - lower speed, same package and interface. | Better suited for cost-sensitive applications where 65Msps suffices and lower power (175mW) is prioritized. | Select when Nyquist bandwidth ≤32.5MHz is acceptable and system clocking constraints favor reduced timing margin. |
| AD9215BRUZ-80 | 10-bit, 80Msps, but uses 3.3V supply only; lacks clock duty cycle stabilizer and internal VCM reference. | Requires external common-mode bias and clock conditioning circuitry - increases BOM count and layout complexity. | Choose if existing design already includes discrete reference/bias circuitry and strict 3.3V supply rail is mandatory. |
Compared with LTC2239IUH#PBF, LTC2238IUH#PBF trades 15Msps speed for lower power and cost, while AD9215BRUZ-80 demands more external support circuitry but offers broader industry familiarity and longer production lifecycle visibility.
Availability
LTC2239IUH#PBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, wireless infrastructure equipment, portable spectrum analyzers, and high-speed data acquisition requiring stable component supply across industrial temperature range (–40°C to +85°C).
Supply support for LTC2239IUH#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2239IUH#PBF belongs to Linear's high-speed ADC product line, engineered specifically for demanding RF/IF digitization in medical, communications, and test equipment where SNR, SFDR, and low power are co-optimized.
FAQ
What is the operating temperature range for the LTC2239IUH#PBF?
The LTC2239IUH#PBF is rated for industrial temperature operation from –40°C to +85°C, as indicated by the "I" grade suffix. This makes it suitable for deployment in base station radios, portable medical devices, and field-deployable instrumentation where ambient conditions exceed commercial-grade limits. The device maintains full specification compliance-including ±0.5LSB INL/DNL and 61.6dB SNR-across this entire range.
Does the LTC2239IUH#PBF require an external reference voltage?
No, the LTC2239IUH#PBF integrates a 1.5V bandgap reference and supports fully self-contained operation using its internal reference. The SENSE pin allows configuration of ±0.5V or ±1V differential input range without external components. An external reference may be applied to SENSE only if a custom input range between 0.5V and 1V is required, but it is not mandatory for standard operation.
How does the clock duty cycle stabilizer in the LTC2239IUH#PBF improve system design?
The clock duty cycle stabilizer in the LTC2239IUH#PBF allows robust 80Msps operation even with asymmetric clock waveforms (e.g., 30%/70% duty cycle), eliminating the need for external clock conditioners or precision oscillators. This reduces bill-of-materials cost and board area while maintaining full AC performance-verified by consistent 61.6dB SNR and 85dB SFDR across 5%–95% duty cycle per the datasheet.
Can the LTC2239IUH#PBF interface directly with a 1.8V FPGA I/O bank?
Yes, the LTC2239IUH#PBF supports direct interfacing with 1.8V logic through its independent OVDD supply pin (Pin 21). When OVDD = 1.8V, the digital outputs meet LVCMOS specifications with VOH ≥ 1.79V and VOL ≤ 0.09V under 1.6mA load, ensuring reliable level compatibility without translators. This capability simplifies mixed-voltage system integration.
What is the significance of the exposed thermal pad (Pin 33) on the LTC2239IUH#PBF?
The exposed thermal pad (Pin 33) on the LTC2239IUH#PBF must be soldered to a PCB ground plane to achieve the specified θJA of 34°C/W. This thermal path is essential for dissipating the 211mW active power at 80Msps and maintaining junction temperature within safe limits during continuous operation. Omitting pad connection risks thermal throttling, parametric drift, or long-term reliability degradation.
LTC2239IUH#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 80M
- 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:
- -
LTC2239IUH#PBF FAQ
1.How can I place an order for LTC2239IUH#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2239IUH#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 LTC2239IUH#PBF reliable?
The price and inventory of LTC2239IUH#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2239IUH#PBF is usually 5 days.
3.What payment methods are accepted for LTC2239IUH#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2239IUH#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2239IUH#PBF?
LTC2239IUH#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2239IUH#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 LTC2239IUH#PBF?
For technical support, including LTC2239IUH#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2239IUH#PBF requirements.
6.How does Aetrix verify that LTC2239IUH#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2239IUH#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 LTC2239IUH#PBF meets industry standards.
7.What is the process for return or replacement of LTC2239IUH#PBF?
All LTC2239IUH#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2239IUH#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 LTC2239IUH#PBF part is unused and in its original packaging.
Return procedure for LTC2239IUH#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2239IUH#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
