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Analog Devices Inc. LTC2232CUK#PBF
- Part No.:
- LTC2232CUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2232CUK#PBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,778
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Product details
Overview
LTC2232CUK#PBF from Analog Devices (formerly Linear Technology) is a 10-bit, 105 Msps analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 61 dB SNR at 140 MHz input, 75 dB SFDR up to 200 MHz, and features 775 MHz full-power bandwidth, single 3.3 V supply operation, and selectable ±0.5 V or ±1 V input ranges. It serves as the front-end ADC in cable head-end systems and wireless base station receivers.
For engineers reviewing the LTC2232CUK#PBF datasheet, LTC2232CUK#PBF pinout, LTC2232CUK#PBF application, or LTC2232CUK#PBF equivalent, key selection criteria include its 105 Msps sampling rate, ultralow 0.15 psRMS aperture jitter, differential encode interface, flexible output voltage range (0.5–3.6 V), and support for shutdown/nap modes in demanding RF sampling applications.
Technical Context
The LTC2232CUK#PBF implements a five-stage CMOS pipelined ADC architecture with integrated sample-and-hold, correction logic, and flexible reference management. Its differential analog input path supports both AC- and DC-coupled signals, while the ENC+/ENC– differential clock interface enables robust timing acquisition with optional duty cycle stabilization.
It uses separate analog (VDD) and digital output (OVDD) supplies to isolate noise-sensitive conversion circuitry from logic drivers. The internal 1.6 V VCM bias generator and SENSE pin allow precise input range configuration (±0.5 V or ±1 V), and the pipeline latency is fixed at 5 clock cycles with deterministic timing relationships between ENC, CLOCKOUT, and data outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with no missing codes - guarantees monotonicity and full code coverage across temperature. |
| Sampling Rate | 105 Msps - enables Nyquist sampling of IF signals up to 52.5 MHz or undersampling of higher-frequency RF bands. |
| SNR @ 140 MHz | 61 dBFS - defines usable dynamic range for wideband communication signals with high adjacent-channel interference. |
| SFDR @ 200 MHz | 75 dBFS - determines spurious-free resolution for multi-tone LTE/WiMAX signals without spectral masking. |
| Aperture Jitter | 0.15 psRMS - limits SNR degradation to ≤0.5 dB at 250 MHz input, critical for direct RF sampling. |
| Full-Power BW | 775 MHz - supports broadband analog input signals without external anti-alias filtering below ~700 MHz. |
| Power Dissipation | 475 mW @ 105 Msps - enables thermal design in dense RF front-end modules with minimal heatsinking. |
| INL / DNL | ±0.8 LSB / ±0.6 LSB over temperature - ensures accurate amplitude fidelity in closed-loop linearization systems. |
Pinout & Package
Package: 48-lead 7 mm × 7 mm plastic QFN with exposed GND pad (Pin 49), requiring PCB soldering for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– (1, 2) | Differential analog input | Accepts ±0.5 V or ±1 V differential signal; high common-mode rejection (>80 dB) minimizes noise coupling. |
| ENC+, ENC– (16, 17) | Differential encode clock input | Sampled on rising/falling edges; supports PECL/LVDS/TTL/CMOS; duty cycle stabilizer reduces timing skew. |
| D0–D9 (25, 26, 29–31, 34–36, 39, 40) | Parallel digital outputs | 10-bit MSB-first offset binary or 2's complement; OVDD programmable (0.5–3.6 V) for interfacing with FPGA I/O banks. |
| SHDN, OE (18, 19) | Power management control | Configures normal, nap (35 mW), or shutdown (2 mW) modes; OE controls tri-state output drivers independently. |
| CLOCKOUT (20) | Data valid strobe | Falling-edge aligned to D0–D9; enables synchronous capture in FPGA logic with <0.6 ns skew vs. data. |
| SENSE (43) | Input range selection | VDD = ±1 V range; VCM = ±0.5 V range; external voltage sets custom ±VSENSE range up to ±1 V. |
| VCM (44) | Common-mode bias reference | 1.6 V buffered output; used to bias single-ended inputs or terminate differential sources. |
| OF (41) | Over/underflow flag | Active-high pulse indicates input exceeding full-scale range - critical for AGC loop feedback in receiver chains. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow aperture jitter | 0.15 psRMS enables direct sampling of 250 MHz IF signals with ≤0.5 dB SNR penalty. |
| Selectably stabilized clock duty cycle | Eliminates performance loss from non-50% clock duty cycles - essential for low-jitter sampling with crystal oscillators or PLLs. |
| Separate OVDD supply | Allows independent 1.8 V/2.5 V/3.3 V output rail - simplifies interface to mixed-voltage FPGAs without level shifters. |
| Flexible reference architecture | Internal 1.6 V VCM + SENSE pin enables ±0.5 V, ±1 V, or user-defined input ranges without external op-amps. |
| Deterministic 5-cycle pipeline latency | Enables precise timing alignment in real-time digital predistortion (DPD) feedback loops with known delay compensation. |
| Low-power nap mode | 35 mW standby power with outputs disabled - preserves system-level power budget during receive-gating intervals. |
Applications
| Cable Head-End Receiver | Wireless Base Station IF Sampling |
|---|---|
Use Scenario: Digitizing multiple 6–54 MHz DOCSIS channels in a shared upstream path with >70 dB SFDR requirement. IC Role / Device Role / Timing Role: Front-end ADC capturing composite QAM signals at 105 Msps with 775 MHz analog bandwidth. Use Value: 61 dB SNR at 140 MHz input ensures >40 dB carrier-to-noise ratio for 256-QAM modulation under multi-channel loading. | Use Scenario: Undersampling 180–220 MHz LTE TDD IF signals in macrocell remote radio heads. IC Role / Device Role / Timing Role: High-speed ADC providing 10-bit samples to FPGA-based digital downconverters with deterministic 5-cycle latency. Use Value: 0.15 psRMS aperture jitter maintains EVM <2.5% at 20 MHz channel bandwidth without external jitter cleaners. |
| Power Amplifier Linearization | Communications Test Equipment |
Use Scenario: Capturing PA output for real-time digital predistortion (DPD) coefficient adaptation in GaN amplifier systems. IC Role / Device Role / Timing Role: Feedback-path ADC synchronizing with transmit DAC via shared CLOCKOUT strobe for sub-ns time alignment. Use Value: OF pin provides instantaneous overrange detection to prevent DPD algorithm corruption during PA saturation events. | Use Scenario: Signal analyzer front-end digitizing wideband modulated waveforms (e.g., 5G NR FR1) for spectrum and error vector analysis. IC Role / Device Role / Timing Role: Precision ADC supporting ≥100 MHz instantaneous bandwidth with calibrated SFDR >75 dBFS. Use Value: ±0.6 LSB DNL over temperature ensures amplitude linearity for ENOB >9.2 bits across 0–70°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9208BCPZ-500 | 14-bit, 3 GSPS, JESD204B serial interface; 6.5 GHz analog BW; 3.5 W power | Targets mmWave 5G massive MIMO - requires high-speed serializer and complex clocking | Choose for multi-GHz sampling and JESD204B backplane integration; not drop-in due to interface, power, and layout requirements. |
| LTC2262IUK#PBF | 12-bit, 105 Msps, same QFN-48 package; 66 dB SNR @ 140 MHz; 550 mW power | Higher resolution for lower-frequency IF processing where SNR >65 dB is required | Choose when 12-bit resolution outweighs 5 dB SNR trade-off and additional 75 mW power is acceptable. |
Compared with AD9208BCPZ-500 and LTC2262IUK#PBF, the LTC2232CUK#PBF offers optimal balance of 10-bit resolution, 105 Msps speed, low jitter, and parallel CMOS interface - making it ideal for cost-sensitive, thermally constrained, FPGA-based RF receivers where JESD204B complexity is unnecessary.
Availability
LTC2232CUK#PBF is available at Aetrix Electronics and suitable for cable head-end systems, wireless infrastructure equipment, power amplifier linearization modules, and communications test instrumentation requiring stable component supply and long-term industrial availability.
Supply support for LTC2232CUK#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 LTC2232CUK#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding RF and IF sampling applications in communications infrastructure where low jitter, high SFDR, and flexible power management are critical.
FAQ
What is the operating temperature range for the LTC2232CUK#PBF?
The LTC2232CUK#PBF is specified for commercial-grade operation from 0°C to 70°C (C-grade). This is confirmed in the Absolute Maximum Ratings table and applies to all DC and AC performance specifications unless otherwise noted. The 'C' suffix in the part number explicitly denotes this temperature grade, distinguishing it from the industrial-grade LTC2232IUK#PBF (–40°C to +85°C).
Does the LTC2232CUK#PBF support single-ended analog input?
Yes, the LTC2232CUK#PBF supports single-ended analog input per the datasheet's "Analog Input Common Mode" specification, which lists valid common-mode ranges for both differential and single-ended configurations. However, differential drive is recommended for optimal harmonic distortion and SNR performance - single-ended use degrades SFDR by ~2–3 dB and increases even-order harmonics.
How does the MODE pin configure output format and clock stabilization on the LTC2232CUK#PBF?
The MODE pin on the LTC2232CUK#PBF selects both output coding and duty cycle stabilization: grounded = offset binary + stabilizer off; 1/3 VDD = offset binary + stabilizer on; 2/3 VDD = 2's complement + stabilizer on; VDD = 2's complement + stabilizer off. This dual-function pin eliminates external configuration logic and allows runtime reconfiguration via simple voltage divider networks.
What is the purpose of the OF (Over/Under Flow) pin on the LTC2232CUK#PBF?
The OF pin on the LTC2232CUK#PBF is an active-high, asynchronous flag that pulses high whenever the analog input exceeds the selected full-scale range (±0.5 V or ±1 V), indicating clipping or saturation. It is used in real-time AGC and DPD systems to trigger gain adjustment or algorithm reset - critical for maintaining signal integrity in closed-loop RF transceivers.
Can the LTC2232CUK#PBF operate with OVDD = 1.8 V while maintaining full-speed performance?
Yes, the LTC2232CUK#PBF supports OVDD = 1.8 V at full 105 Msps sampling rate, as verified in Figure 2232 G12 (IOVDD vs Sample Rate) and the Digital Outputs section of the datasheet. At 1.8 V, VOH is guaranteed ≥1.79 V and VOL ≤0.09 V with 1.6 mA sink current - compatible with LVCMOS18 I/O standards and enabling direct connection to modern low-voltage FPGAs without level translation.
LTC2232CUK#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:
- 10
- Sampling Rate (Per Second):
- 105M
- 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:
- 3.1V ~ 3.5V
- Voltage - Supply, Digital:
- 3.1V ~ 3.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2232CUK#PBF FAQ
1.How can I place an order for LTC2232CUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2232CUK#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 LTC2232CUK#PBF reliable?
The price and inventory of LTC2232CUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2232CUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2232CUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2232CUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2232CUK#PBF?
LTC2232CUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2232CUK#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 LTC2232CUK#PBF?
For technical support, including LTC2232CUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2232CUK#PBF requirements.
6.How does Aetrix verify that LTC2232CUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2232CUK#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 LTC2232CUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2232CUK#PBF?
All LTC2232CUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2232CUK#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 LTC2232CUK#PBF part is unused and in its original packaging.
Return procedure for LTC2232CUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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