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Analog Devices Inc. LTC2201IUK#PBF
- Part No.:
- LTC2201IUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2201IUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,667
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Product details
Overview
LTC2201IUK#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 20 Msps pipelined analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization up to 380 MHz full-power bandwidth. It features a programmable gain amplifier (PGA) front end, 81.6 dB SNR at 1 MHz (2.5 VP-P range), and ±5 LSB integral nonlinearity. It is used in spectrum analysis equipment requiring precise RF sampling with low spurious content.
For engineers reviewing the LTC2201IUK#PBF datasheet, LTC2201IUK#PBF pinout, LTC2201IUK#PBF application, or LTC2201IUK#PBF equivalent, key selection considerations include its 48-lead QFN package, –40°C to +85°C industrial temperature grade, dual input range (1.667 VP-P/2.5 VP-P), internal dither option, and CMOS output voltage flexibility (0.5 V to 3.6 V).
Technical Context
The LTC2201IUK#PBF employs a five-stage CMOS pipelined ADC architecture with integrated sample-and-hold, PGA, and correction logic. Its differential analog input (AIN+, AIN–) supports common-mode bias at 1.25 V via dedicated VCM pin, and it uses a single-ended CLK input with optional duty-cycle stabilizer for robust timing across varying clock sources.
It delivers 100 dB SFDR at 1 MHz (2.5 VP-P, PGA = 0) and maintains 90 dB SFDR at 70 MHz input, enabled by internal dither and output randomization (RAND pin). Power is supplied from a single 3.3 V analog rail (VDD), while digital outputs are independently biased via OVDD (0.5–3.6 V), decoupled from analog ground via separate OGND pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement systems. |
| Sample Rate | 20 Msps - enables Nyquist-limited capture of signals up to 10 MHz baseband or IF sampling of higher-frequency bands. |
| SNR | 81.6 dBFS at 1 MHz (2.5 VP-P, PGA = 0) - defines minimum detectable signal level above quantization and thermal noise floor. |
| SFDR | 100 dBc at 1 MHz (2.5 VP-P, PGA = 0), 90 dBc at 70 MHz - determines usable dynamic range before strongest spur interferes with adjacent channel detection. |
| Full-Power Bandwidth | 380 MHz - supports direct RF sampling of cellular, WiMAX, and radar IF signals without external pre-filtering degradation. |
| Power Dissipation | 211 mW typical at 20 Msps - enables integration into thermally constrained embedded instrumentation and portable test gear. |
| INL / DNL | ±5 LSB INL, ±1 LSB DNL - ensures accurate amplitude linearity critical for calibration-critical applications like ATE and medical imaging. |
Pinout & Package
Package: 48-lead (7 mm × 7 mm) plastic QFN with exposed thermal pad (Pin 49 = 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 ±0.625 V (2.5 VP-P) or ±0.417 V (1.667 VP-P) swing around 1.25 V common mode; requires matched source impedance ≤100 Ω per side. |
| CLK | Sampling clock input | Falling edge initiates hold phase; rising edge may latch data; supports optional duty-cycle stabilizer when MODE pin configured. |
| D0–D15 | CMOS parallel digital outputs | 16-bit offset binary or 2's complement data (configurable via MODE); output swing set by OVDD (0.5–3.6 V). |
| OF | Over/underflow indicator | Active-high flag signaling input signal exceeded full-scale range - used for automatic gain control or clipping detection. |
| PGA | Programmable gain amplifier control | Low = 1× gain, 2.5 VP-P input range; High = 1.5× gain, 1.667 VP-P input range - trades input headroom for improved SNR at lower signal levels. |
| VCM | Common-mode bias voltage output | 1.25 V ±100 mV reference for differential driver circuits; must be bypassed with ≥2.2 μF ceramic capacitor to GND. |
| SHDN | Power shutdown control | High = analog core powered down, digital outputs tri-stated; wake-up settling time <500 μs for full-scale accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| PGA front end | Selectable 1× or 1.5× gain enables optimization between input signal range and effective SNR without external amplification. |
| Internal dither | Reduces harmonic distortion and improves SFDR by >10 dB at –25 dBFS input when enabled via DITH pin. |
| Data output randomizer | XOR-based scrambling (via RAND pin) minimizes deterministic digital switching noise coupling into analog sections. |
| Separate OVDD supply | Independent 0.5–3.6 V output rail allows interfacing with 1.8 V, 2.5 V, or 3.3 V logic families without level shifters. |
| Out-of-range indicator | Dedicated OF pin provides real-time overflow/underflow detection for closed-loop AGC or fault logging in receiver chains. |
Applications
| Cellular Base Station Receivers | Spectrum Analyzers |
|---|---|
Use Scenario: Digitizing 70 MHz IF signals from multi-carrier LTE receivers with simultaneous channel monitoring. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with minimal spurious content to preserve adjacent-channel power ratio (ACPR). Use Value: 90 dB SFDR at 70 MHz enables accurate multi-tone analysis without false spectral peaks masking weak interferers. |
Use Scenario: Real-time FFT-based frequency-domain analysis in benchtop and field-deployable analyzers. IC Role / Device Role / Timing Role: Front-end digitizer providing 20 Msps sampling with 380 MHz analog bandwidth for broadband sweep coverage. Use Value: Full-power bandwidth exceeds 10× typical analyzer IF bandwidth, eliminating anti-alias filter complexity and phase distortion. |
| ATE Test Equipment | Imaging Systems (Ultrasound/MRI) |
Use Scenario: High-accuracy parametric testing of RF components using swept sine and modulated stimulus signals. IC Role / Device Role / Timing Role: Precision digitizer capturing stimulus-response waveforms with calibrated amplitude linearity and low THD. Use Value: ±5 LSB INL and ±1 LSB DNL ensure traceable measurement uncertainty under MIL-STD-45662A calibration protocols. |
Use Scenario: Beamforming digitization in phased-array ultrasound systems requiring low-noise, high-SNR acquisition. IC Role / Device Role / Timing Role: Channel ADC in multi-element receive paths, synchronized via shared CLK and CLKOUT+/- for coherent sampling. Use Value: 81.6 dB SNR at 1 MHz enables detection of microvolt-level echo returns while maintaining dynamic reserve for tissue harmonic imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9268BCPZ-20 | 16-bit, 20 Msps, but uses LVDS outputs and requires dual supplies (1.8 V AVDD/DVDD); no integrated PGA or dither. | Better suited for systems with existing LVDS infrastructure and lower power budgets (160 mW), but lacks analog front-end flexibility. | Select AD9268BCPZ-20 when LVDS serialization and lower power outweigh need for PGA/dither; avoid if redesigning digital interface or requiring DC-coupled analog optimization. |
| LTC2203IUK#PBF | Pin-compatible 16-bit, 25 Msps variant with identical QFN-48 package and register map; same PGA, dither, and SFDR specs scaled for higher rate. | Direct upgrade path for designs needing increased sampling rate without layout change; power rises to 250 mW at 25 Msps. | Choose LTC2203IUK#PBF when system requires >20 Msps and board space/layout reuse is mandatory; verify thermal margin for +39 mW increase. |
Compared with AD9268BCPZ-20 and LTC2203IUK#PBF, the LTC2201IUK#PBF uniquely balances integrated analog conditioning (PGA, VCM, dither), CMOS interface simplicity, and industrial temperature operation - making it optimal for cost-sensitive, space-constrained instrumentation where analog signal conditioning flexibility is prioritized over raw speed or serial output efficiency.
Availability
LTC2201IUK#PBF is available at Aetrix Electronics and suitable for spectrum analysis, cellular base station receivers, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2201IUK#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets.
The LTC2201IUK#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding RF and instrumentation applications requiring wide bandwidth, low distortion, and flexible analog input conditioning.
FAQ
What is the operating temperature range of the LTC2201IUK#PBF?
The LTC2201IUK#PBF is rated for industrial operation from –40°C to +85°C. This range is validated per the device's Absolute Maximum Ratings and Dynamic Accuracy specifications, ensuring guaranteed performance including ±5 LSB INL and 81.6 dB SNR across the full span without derating. The "I" grade designation explicitly confirms this extended temperature capability.
Does the LTC2201IUK#PBF require an external reference voltage?
No - the LTC2201IUK#PBF includes an internal 2.5 V bandgap reference. Tying the SENSE pin to VDD selects this internal reference, establishing a full-scale range of 2.5 VP-P (PGA = 0). An external 2.5 V or 1.25 V reference may be used via the SENSE pin, but it does not alter the full-scale range - both yield 2.5 VP-P output span.
How does the PGA setting affect input range and performance of the LTC2201IUK#PBF?
When PGA = low, the LTC2201IUK#PBF accepts a 2.5 VP-P differential input range (±0.625 V around 1.25 V common mode). When PGA = high, it accepts 1.667 VP-P (±0.417 V), increasing effective resolution for smaller signals. SNR improves ~1.2 dB in the 1.667 VP-P mode due to better utilization of ADC code space, as confirmed in the Dynamic Accuracy tables.
Can the LTC2201IUK#PBF interface directly with 1.8 V logic systems?
Yes - the LTC2201IUK#PBF supports configurable CMOS output voltage via the OVDD supply pin, which accepts 0.5 V to 3.6 V. Setting OVDD = 1.8 V configures D0–D15, OF, CLKOUT+, and CLKOUT– outputs for 1.8 V logic levels, enabling direct connection to FPGA or ASIC I/O banks without level-shifting circuitry.
What is the purpose of the RAND pin on the LTC2201IUK#PBF?
The RAND pin enables digital output randomization: when high, D1–D15 are XORed with D0 (LSB), reducing deterministic spectral content in the digital bus. This minimizes radiated emissions and crosstalk-induced distortion in sensitive analog sections. The original data can be recovered by reapplying the same XOR operation - a feature verified in the Applications Information section.
LTC2201IUK#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 1
- Input Type:
- Differential
- 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:
- 3.135V ~ 3.465V
- Voltage - Supply, Digital:
- 3.135V ~ 3.465V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2201IUK#PBF FAQ
1.How can I place an order for LTC2201IUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2201IUK#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 LTC2201IUK#PBF reliable?
The price and inventory of LTC2201IUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2201IUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2201IUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2201IUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2201IUK#PBF?
LTC2201IUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2201IUK#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 LTC2201IUK#PBF?
For technical support, including LTC2201IUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2201IUK#PBF requirements.
6.How does Aetrix verify that LTC2201IUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2201IUK#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 LTC2201IUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2201IUK#PBF?
All LTC2201IUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2201IUK#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 LTC2201IUK#PBF part is unused and in its original packaging.
Return procedure for LTC2201IUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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