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Analog Devices Inc. LTC2236CUH#PBF
- Part No.:
- LTC2236CUH#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2236CUH#PBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,341
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Product details
Overview
LTC2236CUH#PBF from Analog Devices (formerly Linear Technology) is a 10-bit, 25Msps low-power analog-to-digital converter optimized for high-dynamic-range signal digitization in imaging and communications systems. It operates from a single 3V supply (2.7V–3.4V), delivers 61.8dB SNR and 85dB SFDR at Nyquist, supports flexible ±0.5V to ±1V differential input range, and features a 575MHz full-power bandwidth sample-and-hold stage.
For engineers reviewing the LTC2236CUH#PBF datasheet, LTC2236CUH#PBF pinout, LTC2236CUH#PBF application, or LTC2236CUH#PBF equivalent, this page provides verified technical context, package-validated pin functions, real-world use cases in ultrasound and spectral analysis, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The LTC2236CUH#PBF implements a six-stage CMOS pipelined ADC architecture with internal correction logic and a dedicated clock duty cycle stabilizer. Its sample-and-hold front-end accepts differential inputs referenced to VCM (1.5V), supports both offset binary and 2's complement output formats via the MODE pin, and achieves 0.07LSBRMS transition noise.
It integrates flexible reference control: SENSE pin selection enables ±0.5V (SENSE = VCM), ±1V (SENSE = VDD), or user-defined ±VSENSE input ranges. Power management includes SHDN and OE pins supporting shutdown (2mW), nap mode (15mW), and output enable/disable - all while maintaining ±0.1LSB typical INL and ±0.05LSB typical DNL over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, no missing codes - guarantees monotonic transfer function for precision measurement applications. |
| Sampling Rate | 25Msps - fixed maximum conversion rate; determines real-time bandwidth limit (12.5MHz Nyquist). |
| SNR / SFDR | 61.8dB SNR, 85dB SFDR at 5MHz input - defines usable dynamic range for weak-signal detection in noisy environments. |
| Input Bandwidth | 575MHz full-power bandwidth - supports wideband RF/IF sampling without external anti-alias filtering up to ~200MHz. |
| Power Consumption | 75mW at 25Msps - enables thermally constrained portable instrumentation and battery-assisted systems. |
| INL / DNL | ±0.5LSB INL, ±0.5LSB DNL over temperature - ensures accurate amplitude linearity across industrial temperature range (0°C to 70°C). |
| Analog Supply | 2.7V to 3.4V single VDD - simplifies power design versus dual-supply ADCs; compatible with standard 3V LDOs. |
Pinout & Package
32-pin (5mm × 5mm) QFN package with exposed thermal pad (Pin 33 = GND). 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 swing around 1.5V common-mode; optimal performance requires differential drive. |
| REFH, REFL | ADC reference voltage terminals | Shorted pairs; require local 0.1µF + 2.2µF ceramic bypass to GND for stable reference operation. |
| CLK | Single-ended sampling clock input | Positive-edge triggered; duty cycle stabilizer (enabled via MODE pin) relaxes clock source requirements. |
| SHDN, OE | Power and output control pins | Combination selects normal operation, nap mode (15mW), shutdown (2mW), or high-Z outputs. |
| D0–D9 | Parallel digital output bus | D9 = MSB; output voltage swing referenced to OVDD (0.5V–3.6V), enabling direct interface to 1.8V/2.5V/3.3V logic. |
| SENSE, MODE, VCM | Reference, format, and bias configuration | SENSE sets input range; MODE selects output format and duty cycle stabilizer; VCM = 1.5V buffered bias output. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range selection | ±0.5V to ±1V via SENSE pin - eliminates need for external gain/attenuation stages in multi-range systems. |
| Integrated clock duty cycle stabilizer | Enables high AC performance with non-50% clock sources - reduces jitter sensitivity and eases clock generator selection. |
| Low 0.07LSBRMS transition noise | Minimizes code flicker in DC-coupled or low-frequency applications - critical for high-resolution imaging pixel data. |
| Separate OVDD supply for digital outputs | Supports mixed-voltage system interfacing (e.g., 3.3V ADC core driving 1.8V FPGA) without level shifters. |
| Industrial temperature grade (0°C to 70°C) | Validated performance across full range - suitable for deployed medical, test, and industrial equipment without derating. |
Applications
| Ultrasound Imaging Front-End | Spectral Analysis Instrumentation |
|---|---|
Use Scenario: Digitizing 5–15MHz echo return signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Primary ADC capturing time-domain RF echoes with minimal added noise before beamforming. Use Value: 61.8dB SNR preserves weak tissue boundary reflections; 575MHz input bandwidth avoids aliasing from harmonics generated by pulse excitation. |
Use Scenario: High-resolution frequency domain analysis in handheld spectrum analyzers measuring RF interference or signal purity. IC Role / Device Role / Timing Role: Real-time digitizer feeding FFT engine; requires low distortion to resolve closely spaced tones. Use Value: 85dB SFDR enables detection of spurious signals 85dB below carrier - essential for EMI compliance testing. |
| Portable Medical Data Logger | Wired Broadband Communication Receiver |
Use Scenario: Battery-powered physiological signal recorder capturing ECG, EEG, or EMG waveforms with >10-bit fidelity. IC Role / Device Role / Timing Role: Low-power ADC operating in nap mode between acquisition bursts to extend runtime. Use Value: 15mW nap mode power and 75mW active power allow >24-hour continuous logging on coin-cell batteries. |
Use Scenario: Downconversion chain in DOCSIS 3.1 cable modems digitizing IF signals centered at 100–200MHz. IC Role / Device Role / Timing Role: Intermediate-frequency ADC in direct-conversion receiver architecture. Use Value: 25Msps sampling supports 12.5MHz instantaneous bandwidth; 575MHz input BW accommodates image-reject filter roll-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2226CUH#PBF | 12-bit resolution, same 25Msps rate, 66.5dB SNR, 75mW power - higher resolution but larger code spread. | Better for DC-coupled precision measurement where quantization noise dominates; less ideal for RF envelope detection. | Select when ENOB > 10 bits is required and system can accommodate wider digital bus and higher memory bandwidth. |
| ADS5272IPFP | Texas Instruments 10-bit, 25Msps, 61dB SNR, 120mW, LVDS outputs - higher power, differential outputs, different pinout. | Requires LVDS termination and level translation; better noise immunity in noisy board environments but adds BOM cost. | Choose for electrically noisy industrial settings where common-mode rejection outweighs power budget constraints. |
Compared with LTC2236CUH#PBF, LTC2226CUH#PBF trades sampling speed headroom for resolution and SNR, while ADS5272IPFP sacrifices power efficiency for robust differential signaling - making LTC2236CUH#PBF optimal for portable, single-supply, cost-sensitive 10-bit digitization.
Availability
LTC2236CUH#PBF is available at Aetrix Electronics and suitable for ultrasound imaging front-ends, portable medical data loggers, and spectral analysis instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade performance.
Supply support for LTC2236CUH#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 LTC2236CUH#PBF belongs to the LTC22xx family of low-noise, low-power pipeline ADCs designed specifically for demanding communications, medical imaging, and test equipment applications where SNR, SFDR, and power efficiency are critical.
FAQ
What is the maximum sampling rate supported by the LTC2236CUH#PBF?
The LTC2236CUH#PBF is rated for a fixed maximum sampling rate of 25Msps. This value is specified in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet, and applies across the full industrial temperature range (0°C to 70°C). Operation above 25Msps is not characterized and may result in degraded SNR, increased DNL, or metastability in the output data stream.
Does the LTC2236CUH#PBF require an external reference voltage?
No, the LTC2236CUH#PBF includes an internal 1.5V reference buffer (VCM pin) and supports fully self-contained operation using its internal reference. When SENSE is tied to VCM, the device configures for ±0.5V differential input range. External references are optional and only needed if a custom reference voltage between 0.5V and 1V is required for specialized input scaling.
How does the MODE pin affect the operation of the LTC2236CUH#PBF?
The MODE pin on the LTC2236CUH#PBF controls both output data format and clock duty cycle stabilizer state. Grounding MODE selects offset binary format with duty cycle stabilizer disabled; applying 1/3 VDD enables offset binary with stabilizer active; 2/3 VDD selects 2's complement with stabilizer active; and tying to VDD selects 2's complement with stabilizer disabled - allowing precise matching to host processor data handling requirements.
Can the LTC2236CUH#PBF be used with single-ended analog inputs?
Yes, the LTC2236CUH#PBF supports single-ended operation: drive AIN+ with the signal and tie AIN– to VCM (1.5V). However, this degrades harmonic distortion and INL performance relative to differential drive, while preserving SNR and DNL. The datasheet confirms SNR remains at 61.8dB, but SFDR drops by ~5–10dB depending on input frequency - acceptable for lower-fidelity applications like basic waveform capture.
What thermal considerations apply to the LTC2236CUH#PBF package?
The LTC2236CUH#PBF uses a 32-lead 5mm × 5mm QFN package with an exposed thermal pad (Pin 33). This pad must be soldered to a PCB copper pour connected to GND for effective heat dissipation. Thermal resistance θJA is specified as 34°C/W; at 75mW dissipation, junction temperature rise above ambient is ~2.6°C - ensuring reliable operation without heatsinking in typical industrial enclosures.
LTC2236CUH#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):
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2236CUH#PBF FAQ
1.How can I place an order for LTC2236CUH#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2236CUH#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 LTC2236CUH#PBF reliable?
The price and inventory of LTC2236CUH#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2236CUH#PBF is usually 5 days.
3.What payment methods are accepted for LTC2236CUH#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2236CUH#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2236CUH#PBF?
LTC2236CUH#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2236CUH#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 LTC2236CUH#PBF?
For technical support, including LTC2236CUH#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2236CUH#PBF requirements.
6.How does Aetrix verify that LTC2236CUH#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2236CUH#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 LTC2236CUH#PBF meets industry standards.
7.What is the process for return or replacement of LTC2236CUH#PBF?
All LTC2236CUH#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2236CUH#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 LTC2236CUH#PBF part is unused and in its original packaging.
Return procedure for LTC2236CUH#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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