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Analog Devices Inc. LTC2225IUH#TRPBF
- Part No.:
- LTC2225IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2225IUH#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,177
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Product details
Overview
LTC2225IUH#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 10 Msps low-power pipelined analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 71.3 dB SNR and 90 dB SFDR at 5 MHz input - optimized for high-fidelity spectral analysis and portable instrumentation signal chains.
For engineers reviewing the LTC2225IUH#TRPBF datasheet, LTC2225IUH#TRPBF pinout, LTC2225IUH#TRPBF application, or LTC2225IUH#TRPBF equivalent, key selection criteria include its 575 MHz full-power bandwidth, clock duty cycle stabilizer support, flexible ±0.5V/±1V input range configuration via SENSE pin, and QFN-32 package with exposed thermal pad.
Technical Context
The LTC2225IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with 5-cycle latency, enabling precise digitization of wideband signals beyond Nyquist. Its internal 1.5 V bandgap reference supports programmable input ranges (±0.5 V or ±1 V differential) and provides VCM output for common-mode biasing.
It features a dedicated clock duty cycle stabilizer (enabled via MODE pin at 1/3 VDD or 2/3 VDD), allowing robust operation with non-50% duty cycle clocks, and includes shutdown (2 mW) and nap (15 mW) modes for power-sensitive embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and deterministic code mapping in closed-loop control or data acquisition. |
| Sample Rate | 10 Msps maximum - supports real-time capture of baseband signals up to 5 MHz without aliasing under Nyquist criterion. |
| SNR / SFDR | 71.3 dB SNR and 90 dB SFDR at 5 MHz input - enables high dynamic range detection of weak signals amid strong interferers in spectral analysis. |
| Input Bandwidth | 575 MHz full-power bandwidth - preserves fidelity of fast-rising transients and RF-modulated waveforms in broadband comms front-ends. |
| Power Dissipation | 60 mW typical at 10 Msps - allows integration into thermally constrained portable instruments without active cooling. |
| Analog Supply | Single 2.7 V–3.4 V VDD rail - simplifies power architecture by eliminating dual-supply sequencing and reducing BOM count. |
| Digital Output Range | 0.5 V–3.6 V OVDD programmable - interfaces directly with 1.8 V, 2.5 V, or 3.3 V logic families without level shifters. |
Pinout & Package
Package: 32-lead (5 mm × 5 mm) plastic QFN with exposed thermal pad (Pin 33 = GND), requiring soldering to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN− | Differential analog input pair | Accepts ±0.5 V or ±1 V differential signal; common-mode voltage set by VCM (1.5 V) or external source. |
| REFH, REFL | ADC reference high/low terminals | Internally generated reference nodes; must be shorted in pairs and bypassed with 0.1 µF + 2.2 µF ceramics per datasheet layout rules. |
| VDD (Pins 7, 32) | Analog supply input | 3 V core supply; requires local 0.1 µF ceramic bypass to GND at each pin. |
| CLK | Sampling clock input | Single-ended CMOS/TTL-compatible; rising edge triggers sampling; duty cycle stabilizer optional via MODE pin. |
| SHDN, OE | Power mode control | SHDN = H + OE = H → shutdown (2 mW); SHDN = H + OE = L → nap mode (15 mW); both L → normal operation. |
| D0–D11 | Parallel digital outputs | 12-bit offset binary or 2's complement format (selected by MODE); MSB = D11; output drive compatible with 0.5–3.6 V logic. |
| SENSE | Input range programming | Tie to VDD → ±1 V range; tie to VCM → ±0.5 V range; apply external voltage (0.5–1 V) → ±VSENSE range. |
| MODE | Output format & stabilizer control | GND → offset binary, stabilizer off; 1/3 VDD → offset binary, stabilizer on; 2/3 VDD → 2's complement, stabilizer on. |
| VCM | 1.5 V common-mode output | Provides bias for differential drivers; must be bypassed with ≥2.2 µF ceramic to GND near pin. |
| OF | Over/underflow flag | Active-high indicator when input exceeds ±1 V (2 V range) or ±0.5 V (1 V range) - enables real-time clipping detection. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range selection | Configurable ±0.5 V or ±1 V differential full-scale via SENSE pin - optimizes SNR/SFDR trade-off per application signal swing. |
| Integrated clock duty cycle stabilizer | Enables high AC performance with asymmetric input clocks (e.g., from microcontrollers or PLLs), eliminating external clock conditioning circuitry. |
| Low transition noise | 0.25 LSBRMS - minimizes quantization uncertainty in precision measurement applications such as portable oscilloscopes. |
| On-chip 1.5 V reference with VCM output | Eliminates need for external reference ICs and reduces layout sensitivity; VCM serves as stable bias for op-amp drivers or transformer center taps. |
| Multi-level power management | Three operational states - normal (60 mW), nap (15 mW), shutdown (2 mW) - extends battery life in handheld test equipment without sacrificing wake-up latency. |
Applications
| Wireless Communication Receivers | Portable Spectrum Analyzers |
|---|---|
Use Scenario: Digitizing IF signals in SDR-based LTE/WiFi receivers with limited board space and thermal budget. IC Role / Device Role / Timing Role: High-linearity ADC front-end capturing 0–5 MHz baseband with minimal harmonic distortion and jitter-induced noise. Use Value: 90 dB SFDR ensures adjacent-channel interference rejection; 10 Msps sample rate supports 5 MHz instantaneous bandwidth per Nyquist. | Use Scenario: Real-time frequency-domain analysis in handheld field test gear requiring battery operation and high resolution. IC Role / Device Role / Timing Role: Core digitizer feeding FFT engine; low 60 mW power enables >4-hour runtime on Li-ion packs. Use Value: 71.3 dB SNR delivers >11 effective bits of resolution for accurate amplitude measurement across 80 dB dynamic range. |
| Medical Ultrasound Beamforming | Industrial Vibration Monitoring |
Use Scenario: Channel digitization in portable ultrasound probes where size, power, and analog fidelity are critical. IC Role / Device Role / Timing Role: Low-noise, low-latency ADC converting echo return signals with precise timing alignment across parallel channels. Use Value: 575 MHz input bandwidth preserves pulse shape integrity of short-duration acoustic bursts; no missing codes prevents image artifacts. | Use Scenario: Condition monitoring of rotating machinery using MEMS accelerometers with wide dynamic range requirements. IC Role / Device Role / Timing Role: High-fidelity digitizer capturing transient shock events and resonant harmonics up to 10 kHz. Use Value: ±0.3 LSB INL and ±0.15 LSB DNL ensure accurate amplitude tracking of low-g vibration signatures without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, 10 Msps ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-bit, 100 ksps SAR ADC; no internal reference; requires external clock and reference; higher resolution but 100× slower. | Suitable for precision DC/low-frequency measurements (e.g., sensor readout), not wideband signal capture. | Select ADS8325IPW only when resolution >12-bit and speed <100 ksps suffice; avoid for spectral or communication use cases. |
| LTC2245IUH#TRPBF | 14-bit, 10 Msps pin-compatible family member; identical QFN-32 package and pinout; 73.5 dB SNR, 92 dB SFDR. | Same system footprint and layout; trades 2-bit resolution for ~2 dB SNR/SFDR improvement at same power (65 mW). | LTC2245IUH#TRPBF is a direct upgrade path when higher dynamic range is required without PCB redesign. |
Compared with LTC2225IUH#TRPBF, the LTC2245IUH#TRPBF offers higher resolution and improved AC performance in identical packaging, while the ADS8325IPW targets fundamentally different (low-speed, high-precision) applications - making it unsuitable as a functional substitute.
Availability
LTC2225IUH#TRPBF is available at Aetrix Electronics and suitable for wireless receivers, portable spectrum analyzers, medical ultrasound front-ends, industrial vibration monitors, and battery-powered instrumentation requiring stable component supply and long-term obsolescence mitigation.
Supply support for LTC2225IUH#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 aerospace, industrial, communications, and healthcare markets.
The LTC2225IUH#TRPBF belongs to ADI's legacy Linear Technology high-speed ADC product line, designed specifically for demanding wideband digitization in space-constrained, low-power embedded systems where SNR, SFDR, and thermal efficiency are critical.
FAQ
What is the operating temperature range for the LTC2225IUH#TRPBF?
The LTC2225IUH#TRPBF is rated for industrial operation from –40°C to +85°C (I-grade). This is confirmed in the Absolute Maximum Ratings table and applies to all DC and AC specifications marked with the ● symbol, including INL, DNL, SNR, and SFDR performance across the full range.
Does the LTC2225IUH#TRPBF require an external reference voltage?
No, the LTC2225IUH#TRPBF includes an internal 1.5 V bandgap reference and supports two pin-selectable input ranges (±0.5 V or ±1 V differential) via the SENSE pin. An external reference may be used by applying it directly to SENSE, but it is not required for standard operation.
How does the MODE pin affect output format and clock functionality in the LTC2225IUH#TRPBF?
The MODE pin configures both output coding and clock duty cycle stabilization: GND selects offset binary with stabilizer off; 1/3 VDD selects offset binary with stabilizer on; 2/3 VDD selects 2's complement with stabilizer on; VDD selects 2's complement with stabilizer off - all settings are defined in the Pin Functions section of the datasheet.
What is the purpose of the OF (over/under flow) pin on the LTC2225IUH#TRPBF?
OF is an active-high output that asserts when the analog input exceeds the selected full-scale range (e.g., >±1 V for 2 V range or >±0.5 V for 1 V range). It provides real-time saturation detection without requiring software parsing of output codes, enabling immediate gain adjustment or alarm triggering in the LTC2225IUH#TRPBF signal chain.
Can the LTC2225IUH#TRPBF operate below its maximum 10 Msps sample rate?
Yes, the LTC2225IUH#TRPBF supports sample rates down to 1 Msps. The minimum rate is limited by sample-and-hold droop due to capacitor leakage; operation below 1 Msps risks loss of accuracy and increased INL error, as specified in the Dynamic Accuracy section.
LTC2225IUH#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):
- 10M
- 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:
- -
LTC2225IUH#TRPBF FAQ
1.How can I place an order for LTC2225IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2225IUH#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 LTC2225IUH#TRPBF reliable?
The price and inventory of LTC2225IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2225IUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2225IUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2225IUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2225IUH#TRPBF?
LTC2225IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2225IUH#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 LTC2225IUH#TRPBF?
For technical support, including LTC2225IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2225IUH#TRPBF requirements.
6.How does Aetrix verify that LTC2225IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2225IUH#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 LTC2225IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2225IUH#TRPBF?
All LTC2225IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2225IUH#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 LTC2225IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2225IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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