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Analog Devices Inc. LTC2204IUK#PBF
- Part No.:
- LTC2204IUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2204IUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,567
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Product details
Overview
LTC2204IUK#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 40Msps high-speed analog-to-digital converter optimized for undersampling wideband RF signals up to 700MHz full-power bandwidth. It features 79dB SNR, 100dB SFDR at 5MHz input (2.25VP-P range), and ultralow 90fsRMS aperture jitter-enabling high-fidelity digitization in cellular base station receivers and spectrum analyzers.
For engineers reviewing the LTC2204IUK#PBF datasheet, LTC2204IUK#PBF pinout, LTC2204IUK#PBF application, or LTC2204IUK#PBF equivalent, key selection criteria include its 40Msps sample rate, differential analog input with PGA front end, CMOS output swing adjustable from 0.5V to 3.6V, and industrial-grade –40°C to +85°C operating temperature range.
Technical Context
The LTC2204IUK#PBF employs a pipelined ADC architecture with integrated sample-and-hold and internal reference generator. Its analog input supports differential drive with programmable gain (PGA = 0 or 1), enabling 1.5VP-P or 2.25VP-P input ranges and common-mode voltage of 1.25V.
Digital interface includes 16-bit parallel CMOS outputs with separate OVDD supply, ENC+/ENC– clock inputs compatible with sine wave, PECL, LVDS, TTL, or CMOS, and optional clock duty cycle stabilizer. Pipeline latency is fixed at 7 cycles, and timing parameters are specified over full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-ensures monotonic transfer function for precision measurement systems. |
| Sample Rate | 40Msps-supports Nyquist sampling of baseband signals up to 20MHz or undersampling of IF/RF bands. |
| SNR | 79dB at 5MHz input (2.25VP-P, PGA = 0)-delivers >13 effective bits for high dynamic range applications. |
| SFDR | 100dB at 5MHz input (2.25VP-P, PGA = 0)-minimizes spurious content in multi-tone communication signals. |
| Aperture Jitter | 90fsRMS-enables clean undersampling of 140MHz+ input frequencies without significant noise floor degradation. |
| Full-Power Bandwidth | 700MHz-preserves signal integrity for wideband RF digitization without external anti-alias filtering. |
| Power Dissipation | 480mW at 40Msps, 3.3V supply-enables thermal management in dense RF front-end layouts. |
Pinout & Package
Package: 48-lead (7mm × 7mm) plastic QFN with exposed pad (Pin 49 = GND). Thermal resistance θJA = 29°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 1.5VP-P or 2.25VP-P input with 1.25V common-mode; 6.5pF capacitance in sample mode. |
| ENC+, ENC– | Differential encode clock input | Supports sine, PECL, LVDS, TTL, CMOS; optional duty cycle stabilizer enables robust timing at full speed. |
| D0–D15 | 16-bit parallel CMOS data outputs | Output swing referenced to OVDD (0.5V–3.6V); OE pin controls bus enable. |
| OF | Out-of-range indicator | Active-high flag signals analog input exceeding full-scale range-critical for AGC loop feedback. |
| PGA, DITH, RAND, SHDN, MODE, OE | Control logic inputs | Configure gain, dither, output randomization, shutdown, output format, and bus enable-enables runtime reconfiguration. |
| VDD, OVDD, GND, OGND, SENSE, VCM | Power and bias terminals | Separate analog/digital supplies; VCM provides 1.25V ±100mV reference for input common-mode; SENSE monitors internal reference stability. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | Switches between 1.5VP-P and 2.25VP-P input ranges-optimizes SNR for varying signal amplitudes without external amplification. |
| Optional Internal Dither | Reduces harmonic distortion and improves SFDR by >10dB at low input levels-essential for spectrum analysis accuracy. |
| Separate Output Supply (OVDD) | Enables direct interfacing with 1.8V, 2.5V, or 3.3V logic families-eliminates level-shifting components in mixed-voltage systems. |
| Ultralow Aperture Jitter (90fsRMS) | Preserves ENOB above 12.5 bits at 140MHz input frequency-enables direct RF sampling in 3G/4G receiver architectures. |
| Industrial Temperature Range (–40°C to +85°C) | Guarantees AC performance specs across full range-validates operation in outdoor base stations and industrial test equipment. |
Applications
| Cellular Base Station Receivers | Spectrum Analyzers |
|---|---|
Use Scenario: Digitizing 70MHz–250MHz IF signals from downconverters in LTE/FDD-TDD base station transceivers. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with minimal spurious content for digital predistortion and channel estimation. Use Value: 100dB SFDR ensures adjacent-channel leakage ratio (ACLR) compliance; 700MHz bandwidth avoids external anti-alias filters. | Use Scenario: Real-time FFT-based spectral analysis of RF signals up to 140MHz with <1kHz resolution bandwidth. IC Role / Device Role / Timing Role: Sampling engine providing time-domain data to FPGA-based FFT processors with deterministic 7-cycle pipeline latency. Use Value: 90fsRMS jitter maintains frequency bin integrity; optional dither suppresses FFT leakage artifacts. |
| ATE Test Equipment | Imaging Systems |
Use Scenario: High-accuracy waveform capture in automated test systems validating RF power amplifiers and mixers. IC Role / Device Role / Timing Role: Precision digitizer measuring amplitude, phase, and distortion metrics (EVM, ACPR, IMD) under modulated stimulus. Use Value: ±1LSB DNL guarantees monotonicity for calibration traceability; 79dB SNR enables >70dB dynamic range measurements. | Use Scenario: Digitizing ultrasound echo signals (5–20MHz bandwidth) in portable medical imaging devices. IC Role / Device Role / Timing Role: Low-noise ADC converting analog beamformed echoes into digital samples for B-mode image reconstruction. Use Value: PGA front end adapts to variable echo amplitudes; 480mW power enables battery-operated handheld designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9246BCPZ-40 | 14-bit, 40Msps; lower resolution but higher SFDR (102dB) at 5MHz; requires external reference. | Better suited for applications prioritizing spurious-free dynamic range over DC accuracy or code depth. | Select when 14-bit resolution suffices and SFDR >102dB is critical for narrowband spectral purity. |
| LTC2205IUK#PBF | 16-bit, 65Msps; identical architecture and pinout; 25Msps higher sample rate; 610mW power. | Direct upgrade path for systems requiring higher Nyquist bandwidth or improved time-domain resolution. | Choose when system design allows increased power budget and requires >40MHz instantaneous bandwidth. |
Compared with AD9246BCPZ-40 and LTC2205IUK#PBF, the LTC2204IUK#PBF uniquely balances 16-bit resolution, 40Msps throughput, and 480mW power in an industrial-temperature QFN-making it optimal for cost- and thermally constrained RF digitization where 14-bit depth is insufficient but 65Msps is unnecessary.
Availability
LTC2204IUK#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and medical imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial-temperature performance.
Supply support for LTC2204IUK#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 acquired Linear Technology in 2017 and maintains its high-performance signal chain portfolio, emphasizing precision, speed, and reliability in data conversion and power management ICs.
The LTC2204 belongs to Linear's ultra-low-jitter, wideband ADC family designed specifically for demanding communications and instrumentation applications where RF undersampling, high SFDR, and industrial temperature operation are mandatory.
FAQ
What is the maximum input frequency supported by the LTC2204IUK#PBF?
The LTC2204IUK#PBF supports full-power analog input frequencies up to 700MHz, verified by its 700MHz full-power bandwidth specification. This enables direct RF sampling of L-band and S-band signals without intermediate frequency conversion, provided the input signal remains within the 1.5VP-P or 2.25VP-P range and common-mode voltage stays near 1.25V.
Does the LTC2204IUK#PBF require an external reference voltage?
No, the LTC2204IUK#PBF integrates an internal reference generator that provides a stable 1.25V common-mode bias (VCM) and supports both internal and external reference configurations. When using the internal reference, gain error drift is ±30ppm/°C; external reference reduces this to ±10ppm/°C-allowing flexibility based on system accuracy requirements.
How does the PGA feature affect the LTC2204IUK#PBF's dynamic performance?
The PGA in the LTC2204IUK#PBF selects between two input ranges: 2.25VP-P (PGA = 0) and 1.5VP-P (PGA = 1). At 5MHz input, SNR degrades from 79.1dB to 76.5dB and SFDR from 100dB to 100dB when switching to the 1.5VP-P range-enabling optimal trade-off between headroom and noise floor depending on signal amplitude.
Can the LTC2204IUK#PBF operate with a 1.8V digital output supply (OVDD)?
Yes, the LTC2204IUK#PBF supports OVDD from 0.5V to 3.6V, including 1.8V. At OVDD = 1.8V, VOH is guaranteed ≥1.79V and VOL ≤0.1V with 200μA load-enabling direct connection to 1.8V FPGA I/O banks without level shifters, reducing BOM count and layout complexity in portable RF systems.
What is the purpose of the OF (Out-of-Range) pin on the LTC2204IUK#PBF?
The OF pin on the LTC2204IUK#PBF is an active-high indicator that asserts when the analog input exceeds the selected full-scale range (±0.75V or ±1.125V differential). This signal is used in automatic gain control (AGC) loops to dynamically adjust front-end attenuation or PGA gain-preventing clipping and preserving signal fidelity during rapid amplitude variations in burst-mode wireless signals.
LTC2204IUK#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):
- 40M
- 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:
- -
LTC2204IUK#PBF FAQ
1.How can I place an order for LTC2204IUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2204IUK#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 LTC2204IUK#PBF reliable?
The price and inventory of LTC2204IUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2204IUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2204IUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2204IUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2204IUK#PBF?
LTC2204IUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2204IUK#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 LTC2204IUK#PBF?
For technical support, including LTC2204IUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2204IUK#PBF requirements.
6.How does Aetrix verify that LTC2204IUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2204IUK#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 LTC2204IUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2204IUK#PBF?
All LTC2204IUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2204IUK#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 LTC2204IUK#PBF part is unused and in its original packaging.
Return procedure for LTC2204IUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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