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Analog Devices Inc. LTC2236CUH#TRPBF
- Part No.:
- LTC2236CUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2236CUH#TRPBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,939
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Product details
Overview
LTC2236CUH#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 25Msps low-power 3V analog-to-digital converter optimized for high-fidelity digitization of wide dynamic range signals in imaging and communications systems. It delivers 61.8dB SNR, 85dB SFDR at Nyquist, ±0.1LSB typical INL, and operates from a single 2.7V–3.4V supply with only 75mW power consumption - enabling portable ultrasound front-ends and spectral analysis instrumentation.
For engineers reviewing the LTC2236CUH#TRPBF datasheet, LTC2236CUH#TRPBF pinout, LTC2236CUH#TRPBF application, or LTC2236CUH#TRPBF equivalent, key selection criteria include its 575MHz full-power bandwidth, clock duty cycle stabilizer support, flexible ±0.5V to ±1V differential input range, and compatibility with 1.8V/2.5V/3.3V digital output logic levels via separate OVDD rail.
Technical Context
The LTC2236CUH#TRPBF employs a six-stage CMOS pipelined ADC architecture with integrated sample-and-hold, internal 1.5V VCM reference, and programmable output format (offset binary or 2's complement). Its acquisition path supports differential input drive with 1.5V common-mode bias, and features a dedicated SENSE pin for input range selection (±0.5V to ±1V) using internal or external references.
Timing is controlled by a single-ended CLK input with configurable duty cycle stabilization; aperture delay jitter is specified at 0.2psRMS. The converter exhibits pipeline latency of 5 cycles and includes dedicated OF (over/underflow) and SHDN/OE control pins for system-level power management and data integrity monitoring.
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; enables real-time baseband sampling up to 12.5MHz (Nyquist). |
| SNR / SFDR | 61.8dB SNR and 85dB SFDR at 5MHz input - defines usable dynamic range for signal integrity in demanding RF and medical imaging front-ends. |
| Input Bandwidth | 575MHz full-power bandwidth - supports high-frequency analog inputs without significant amplitude roll-off before digitization. |
| Power Consumption | 75mW at 25Msps - enables thermally constrained portable designs; reduces heat sink requirements in dense PCB layouts. |
| Analog Supply | 2.7V to 3.4V single VDD - simplifies power delivery versus dual-supply ADCs; compatible with standard 3V LDOs. |
| Digital Output Range | 0.5V to 3.6V via OVDD - allows direct interfacing with FPGA I/O banks, microcontroller GPIOs, or ASIC logic without level shifters. |
Pinout & Package
32-pin (5mm × 5mm) QFN package with exposed thermal pad (Pin 33 = GND), RoHS-compliant and lead-free. 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 differential signal; requires 1.5V common-mode bias (VCM) for optimal linearity and harmonic performance. |
| REFH, REFL | ADC reference voltage terminals | Shorted externally; define full-scale range with internal reference or external source; require 0.1µF + 2.2µF bypassing per pin. |
| CLK | Single-ended sampling clock input | Positive-edge triggered; supports duty cycle stabilization when MODE pin is biased to 1/3 VDD or 2/3 VDD. |
| SHDN, OE | Power mode and output enable controls | SHDN=VDD + OE=GND → nap mode (15mW); SHDN=VDD + OE=VDD → shutdown (2mW); OE=VDD disables outputs. |
| D0–D9 | Parallel digital output bus | D9 = MSB; outputs are CMOS-compatible; timing referenced to CLK with 1.4–5.4ns tD (CLK to DATA delay). |
| OF | Over/underflow flag | Active-high pulse indicates input exceeded ±FS range; used for automatic gain control or saturation detection in closed-loop systems. |
| MODE, SENSE, VCM | Configuration and reference programming | MODE selects output format and duty cycle stabilizer; SENSE sets input range; VCM provides 1.5V bias (±25ppm/°C tempco). |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range | ±0.5V to ±1V differential via SENSE pin - eliminates need for external gain stages in multi-range instrumentation. |
| Clock duty cycle stabilizer | Enables high AC performance across wide input clock duty cycles (e.g., 40%–60%) without external correction circuitry. |
| Low transition noise | 0.07LSBRMS - minimizes quantization uncertainty in low-amplitude signal capture, critical for spectral purity in analyzers. |
| Shutdown & nap modes | 2mW shutdown and 15mW nap current - extends battery life in portable diagnostics and handheld test equipment. |
| Separate OVDD rail | Independent 0.5V–3.6V output supply - allows seamless integration with mixed-voltage SoCs and FPGAs without level-shifting components. |
Applications
| Ultrasound Imaging Front-End | Spectral Analysis Instrumentation |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers operating at 2–15MHz carrier frequencies. IC Role / Device Role / Timing Role: Primary ADC in receive beamformer chain; samples baseband I/Q or RF signals with minimal added noise. Use Value: 61.8dB SNR preserves weak echo detail; 575MHz bandwidth accommodates harmonics and broadband transducer response. |
Use Scenario: Real-time frequency-domain analysis of vibration, audio, or EMI emissions using swept or FFT-based methods. IC Role / Device Role / Timing Role: High-fidelity digitizer feeding FPGA-based FFT engines; synchronized to precision clock sources. Use Value: 85dB SFDR suppresses spurious tones from nonlinearity, enabling accurate identification of low-level spectral components. |
| Portable Medical Diagnostics | Communications Baseband Receiver |
Use Scenario: Battery-powered point-of-care devices requiring low power, small footprint, and clinical-grade signal fidelity. IC Role / Device Role / Timing Role: Core data acquisition component in handheld ECG, Doppler, or impedance plethysmography units. Use Value: 75mW power and 5mm × 5mm QFN reduce thermal load and board area; ±0.1LSB INL ensures diagnostic accuracy. |
Use Scenario: Digitizing IF or baseband signals in narrowband wireless receivers (e.g., ISM band, LPWAN gateways). IC Role / Device Role / Timing Role: ADC in zero-IF or low-IF receiver architecture; interfaces directly to demodulator or DSP core. Use Value: Clock duty cycle stabilizer maintains SNR with imperfect local oscillator waveforms; OF pin enables AGC loop feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS5270IPFP | 10-bit, 40Msps, 1.8V supply, 110mW; no internal VCM or SENSE pin; LVDS outputs only. | Higher speed but higher power and incompatible digital interface; requires external biasing and level translation. | Select when >25Msps sampling is required and LVDS interface is acceptable; avoid if 3V single-supply or flexible input range is mandatory. |
| MAX1186ETL+ | 10-bit, 20Msps, 3V supply, 65mW; 500MHz bandwidth; no duty cycle stabilizer or OF pin. | Lower speed and missing key diagnostics (OF); lacks clock flexibility and reference programming capability. | Select for cost-sensitive, lower-bandwidth applications where nap/shutdown modes and input range tuning are not needed. |
Compared with ADS5270IPFP and MAX1186ETL+, the LTC2236CUH#TRPBF uniquely balances 25Msps throughput, ultra-low 75mW power, on-chip VCM and SENSE-based range control, and robust diagnostic signaling (OF) - making it optimal for portable, high-integrity signal acquisition where supply simplicity and configurability are design priorities.
Availability
LTC2236CUH#TRPBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, portable medical diagnostics, spectral analysis instruments, and communications baseband receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2236CUH#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2236CUH#TRPBF belongs to ADI's legacy Linear Technology high-speed precision ADC product line, engineered specifically for low-power, high-SNR digitization in portable and battery-operated instrumentation and medical equipment.
FAQ
What is the maximum input frequency supported by the LTC2236CUH#TRPBF without significant amplitude loss?
The LTC2236CUH#TRPBF has a 575MHz full-power bandwidth, meaning it maintains ≤3dB amplitude flatness up to that frequency for full-scale inputs. This allows faithful digitization of signals well beyond its 12.5MHz Nyquist limit - critical for preserving harmonic content in ultrasound and RF applications. Performance remains linear within specification up to 140MHz, as confirmed by SNR/SFDR vs. frequency plots in the datasheet.
Does the LTC2236CUH#TRPBF require an external reference, or can it operate with internal biasing?
The LTC2236CUH#TRPBF can operate fully autonomously using its internal 1.5V VCM reference and programmable SENSE pin. Connecting SENSE to VCM configures ±0.5V input range; connecting to VDD selects ±1V range. REFH/REFL pins must still be shorted and bypassed, but no external reference IC is required - reducing BOM count and layout complexity in space-constrained designs.
How does the clock duty cycle stabilizer in the LTC2236CUH#TRPBF improve system design?
The clock duty cycle stabilizer in the LTC2236CUH#TRPBF compensates for non-50% duty cycle clocks (e.g., from crystal oscillators or PLLs with asymmetric output), maintaining specified SNR and SFDR performance without requiring external duty cycle correction circuits. Enabled via MODE pin biasing, it eliminates a common source of AC performance degradation - especially valuable in compact, cost-sensitive systems where clock generation is simplified.
What is the purpose of the OF (Over/Under Flow) pin on the LTC2236CUH#TRPBF, and how is it used?
The OF pin on the LTC2236CUH#TRPBF is an active-high, asynchronous flag indicating when the analog input exceeds the selected full-scale range (±0.5V or ±1V), causing code saturation. It is used in real-time signal conditioning loops - for example, triggering automatic gain control (AGC) in ultrasound receivers or alerting firmware to adjust input attenuation before data corruption occurs. Its dedicated output avoids software polling overhead.
Can the LTC2236CUH#TRPBF interface directly with a 1.8V FPGA I/O bank?
Yes, the LTC2236CUH#TRPBF supports direct interfacing with 1.8V FPGA I/O banks via its independent OVDD supply rail. When OVDD = 1.8V, the D0–D9 outputs meet 1.8V logic thresholds (VOH ≥ 1.79V, VOL ≤ 0.09V at 1.6mA sink), eliminating level shifters. This simplifies interconnect, reduces propagation delay skew, and improves signal integrity in high-speed digital capture systems.
LTC2236CUH#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):
- 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#TRPBF FAQ
1.How can I place an order for LTC2236CUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2236CUH#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 LTC2236CUH#TRPBF reliable?
The price and inventory of LTC2236CUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2236CUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2236CUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2236CUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2236CUH#TRPBF?
LTC2236CUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2236CUH#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 LTC2236CUH#TRPBF?
For technical support, including LTC2236CUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2236CUH#TRPBF requirements.
6.How does Aetrix verify that LTC2236CUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2236CUH#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 LTC2236CUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2236CUH#TRPBF?
All LTC2236CUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2236CUH#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 LTC2236CUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2236CUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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