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Analog Devices Inc. LTC2204CUK#PBF
- Part No.:
- LTC2204CUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2204CUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,296
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Product details
Overview
LTC2204CUK#PBF from Analog Devices (acquired Linear Technology) is a 16-bit, 40Msps sampling analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization 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 undersampling in spectrum analysis and cellular base station receivers.
For engineers reviewing the LTC2204CUK#PBF datasheet, LTC2204CUK#PBF pinout, LTC2204CUK#PBF application, or LTC2204CUK#PBF equivalent, key selection criteria include its 40Msps sample rate, differential analog input with PGA front end (1.5V/2.25VP-P selectable range), CMOS output swing adjustable from 0.5V to 3.6V, and support for LVDS/PECL/TTL/CMOS clock inputs with optional duty cycle stabilizer.
Technical Context
The LTC2204CUK#PBF implements a 16-bit pipelined ADC core with integrated sample-and-hold amplifier and programmable gain amplifier (PGA) front end. Its architecture supports both differential and single-ended clock drive (ENC+/ENC–) and includes an out-of-range indicator (OF), data randomizer (RAND), and internal dither option to enhance SFDR performance at low input levels.
It operates from a single 3.3V analog supply (VDD), with separate digital output supply (OVDD) enabling flexible interface voltage levels. The device delivers ±4LSB INL and ±1LSB DNL (no missing codes), with DC accuracy maintained across 0°C to 70°C operating temperature range (C-grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, guaranteed no missing codes-ensures monotonic transfer function for precision measurement systems. |
| Sample Rate | 40Msps-supports real-time digitization of IF signals up to ~15MHz Nyquist bandwidth without decimation. |
| SNR / SFDR | 79dB SNR and 100dB SFDR at 5MHz input (2.25VP-P)-enables high-fidelity capture of weak signals adjacent to strong interferers. |
| Aperture Jitter | 90fsRMS-limits sampling uncertainty, preserving SNR when undersampling RF carriers above 100MHz. |
| Input Bandwidth | 700MHz full-power bandwidth-allows direct digitization of wideband IF stages without external amplification or filtering. |
| Power Dissipation | 480mW at 40Msps-enables integration into thermally constrained telecom and instrumentation PCBs with standard thermal relief. |
| Supply Voltage | Single 3.3V analog supply (VDD); independent 0.5V–3.6V digital output supply (OVDD)-simplifies power sequencing and enables mixed-voltage system interfacing. |
Pinout & Package
Package: 48-lead (7mm × 7mm) plastic QFN with exposed pad (GND). Pin-compatible with LTC2205/LTC2206/LTC2207 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 1.5V or 2.25VP-P differential signal; common-mode voltage internally set to 1.25V or externally configurable. |
| ENC+, ENC– | Differential encode clock input | Supports sine wave, PECL, LVDS, TTL, or CMOS; optional duty cycle stabilizer maintains timing integrity across wide duty cycles. |
| D0–D15 | CMOS parallel data outputs | 16-bit two's complement output; swing referenced to OVDD (0.5V–3.6V), enabling direct interface to FPGAs or ASICs. |
| OF | Out-of-range indicator | Active-high flag signaling analog input exceeding full-scale range-critical for automatic gain control (AGC) loop feedback. |
| PGA, DITH, RAND, OE, SHDN | Control logic inputs | Configure gain (1×/2×), enable internal dither, randomize output bits, enable/disable outputs, and enter low-power shutdown mode. |
| VCM | Common-mode bias output | Provides stable 1.25V reference for external circuitry; tempco ±40ppm/°C ensures consistent input biasing over temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | Selects between 1.5VP-P and 2.25VP-P input ranges-optimizes dynamic range for varying signal amplitudes without external gain stages. |
| Optional Internal Dither | Improves SFDR by >10dB at low input levels (e.g., –25dBFS), suppressing harmonic distortion caused by quantization nonlinearity. |
| Data Output Randomizer | Reduces deterministic spectral spurs from pattern-dependent switching currents-essential for meeting EMI compliance in dense PCB layouts. |
| Separate Digital Output Supply (OVDD) | Enables interoperability with 1.8V, 2.5V, or 3.3V logic families without level shifters-reducing BOM count and layout complexity. |
| Ultralow Aperture Jitter (90fsRMS) | Preserves SNR during undersampling of 140MHz+ IF signals-eliminates need for ultra-low-jitter external clock synthesizers in cost-sensitive designs. |
Applications
| Telecommunications Infrastructure | RF Spectrum Analysis |
|---|---|
Use Scenario: Digitizing 70MHz IF outputs from downconverters in LTE/5G macrocell base stations. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth for digital predistortion (DPD) and channel estimation algorithms. Use Value: 700MHz input bandwidth and 79dB SNR ensure accurate representation of multi-carrier signals with minimal noise floor degradation. | Use Scenario: Real-time FFT-based spectral monitoring in handheld or benchtop analyzers. IC Role / Device Role / Timing Role: Front-end digitizer feeding FPGA-based signal processing pipeline with deterministic latency (7-cycle pipeline). Use Value: 100dB SFDR enables detection of low-level spurious emissions buried 100dB below strong fundamental tones. |
| Automated Test Equipment (ATE) | Medical Imaging Signal Chain |
Use Scenario: High-accuracy waveform capture in production test systems validating RF transceivers and power amplifiers. IC Role / Device Role / Timing Role: Precision digitizer verifying modulation quality (EVM, ACLR) under production-line thermal and voltage variation. Use Value: ±4LSB INL and ±1LSB DNL guarantee measurement linearity across full scale-reducing calibration overhead and test time. | Use Scenario: Digitizing ultrasound receive beamformer outputs in portable imaging systems. IC Role / Device Role / Timing Role: Low-power, high-SFDR ADC converting analog echo signals after time-gain compensation (TGC) amplification. Use Value: 480mW power dissipation and 90fs jitter enable high-resolution B-mode imaging while maintaining thermal safety in handheld enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2205CUK#PBF | 65Msps sample rate; identical pinout, package, and feature set-higher speed at increased power (610mW). | Suitable where higher Nyquist bandwidth (>20MHz) is required for wider IF capture or faster sweep rates. | Select when system clock budget allows 65Msps operation and SNR/SFDR trade-offs at higher frequencies are acceptable. |
| AD9246BCPZ-40 | 14-bit, 40Msps; 74dB SNR, 88dB SFDR; 3.3V-only supply; no PGA or dither; different pinout and package (32-lead LFCSP). | Better suited for cost-sensitive, lower-dynamic-range applications where 16-bit resolution is not mandatory. | Choose only if resolution requirement is ≤14 bits and existing design cannot accommodate QFN-48 footprint or dual-supply routing. |
Compared with LTC2205CUK#PBF, the LTC2204CUK#PBF trades 25Msps speed for 130mW lower power and improved thermal stability in C-grade operation; versus AD9246BCPZ-40, it delivers +5dB SNR and +12dB SFDR with on-chip PGA flexibility but requires more complex power and layout design.
Availability
LTC2204CUK#PBF is available at Aetrix Electronics and suitable for telecommunications infrastructure, RF test equipment, medical ultrasound systems, and spectrum analyzers requiring stable component supply across extended production lifecycles.
Supply support for LTC2204CUK#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2204CUK#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring wide input bandwidth, low jitter, and exceptional dynamic range.
FAQ
What is the maximum analog input frequency supported by the LTC2204CUK#PBF?
The LTC2204CUK#PBF supports a full-power analog input bandwidth of 700MHz, enabling direct undersampling of RF and IF signals well beyond its 40Msps Nyquist limit. This specification is verified per the datasheet's BW-3dB parameter and confirmed in typical performance plots (e.g., G48–G53) showing usable response up to 140MHz input with maintained SFDR and SNR.
Does the LTC2204CUK#PBF require external reference voltage?
No, the LTC2204CUK#PBF integrates an internal reference generator and does not require an external reference. The device uses an internal 1.25V bandgap reference with ±30ppm/°C drift; external reference mode is not supported-reference-related specifications (e.g., gain error) apply only to the internal reference path.
Can the LTC2204CUK#PBF operate with a 2.5V digital output supply (OVDD)?
Yes, the LTC2204CUK#PBF supports OVDD from 0.5V to 3.6V, including 2.5V. At OVDD = 2.5V, VOH is guaranteed ≥2.49V and VOL ≤0.1V under specified load conditions, enabling direct interface to 2.5V logic families without level-shifting circuitry.
What is the pipeline latency of the LTC2204CUK#PBF and how does it affect system timing?
The LTC2204CUK#PBF has a fixed pipeline latency of 7 clock cycles, meaning the digital output corresponding to a given analog sample appears 7 ENC periods after sampling. This deterministic latency simplifies timing closure in FPGA-based processing pipelines and enables precise synchronization with downstream DSP blocks.
How does the PGA setting affect the LTC2204CUK#PBF's input range and dynamic performance?
The PGA setting selects between two full-scale input ranges: 2.25VP-P (PGA = 0) and 1.5VP-P (PGA = 1). At 1.5VP-P, SNR degrades by ~2.5dB (e.g., 76.5dB vs. 79.1dB at 5MHz), but SFDR improves at higher input frequencies due to reduced clipping risk-allowing optimization for either sensitivity or spurious-free dynamic range based on signal characteristics.
LTC2204CUK#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2204CUK#PBF FAQ
1.How can I place an order for LTC2204CUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2204CUK#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 LTC2204CUK#PBF reliable?
The price and inventory of LTC2204CUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2204CUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2204CUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2204CUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2204CUK#PBF?
LTC2204CUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2204CUK#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 LTC2204CUK#PBF?
For technical support, including LTC2204CUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2204CUK#PBF requirements.
6.How does Aetrix verify that LTC2204CUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2204CUK#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 LTC2204CUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2204CUK#PBF?
All LTC2204CUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2204CUK#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 LTC2204CUK#PBF part is unused and in its original packaging.
Return procedure for LTC2204CUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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