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Analog Devices Inc. AD9268BCPZRL7-125
- Part No.:
- AD9268BCPZRL7-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9268BCPZRL7-125.pdf
- Description:
- IC ADC 16BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,201
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Product details
Overview
AD9268BCPZRL7-125 from Analog Devices is a dual, 16-bit, 125 MSPS analog-to-digital converter (ADC) designed for high-performance communications signal acquisition. It features differential analog inputs with 650 MHz bandwidth, 1.8 V analog supply operation, 78.2 dBFS SNR at 70 MHz input, and supports CMOS or LVDS digital outputs. It is used in multimode digital receivers such as LTE and W-CDMA baseband processing.
For engineers reviewing the AD9268BCPZRL7-125 datasheet, AD9268BCPZRL7-125 pinout, AD9268BCPZRL7-125 application, or AD9268BCPZRL7-125 equivalent, key selection considerations include its 125 MSPS sampling rate, dual-channel interleaving capability, on-chip dither for SFDR enhancement, and compatibility with IF sampling up to 300 MHz.
Technical Context
The AD9268BCPZRL7-125 implements a multistage, differential pipelined ADC architecture with integrated output error correction logic. Each channel includes wide-bandwidth differential sample-and-hold amplifiers and supports user-selectable input ranges from 1 Vp-p to 2 Vp-p.
It integrates a duty cycle stabilizer (DCS), programmable internal voltage reference, and serial port interface (SPI) for configuration of data formatting, power modes, and clock divider settings (1-to-8). Channel synchronization is supported via dedicated SYNC input and multichip sync capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Enables high dynamic range digitization for demanding RF/IF applications. |
| Max Sampling Rate | 125 MSPS - Supports Nyquist sampling of signals up to 62.5 MHz or undersampling of IFs up to 300 MHz. |
| SNR @ 70 MHz | 78.2 dBFS - Delivers >12.6 ENOB for accurate representation of complex modulated waveforms. |
| SFDR @ 70 MHz | 88 dBc - Ensures robust spurious-free operation in dense spectral environments like cellular base stations. |
| Analog Input Bandwidth | 650 MHz - Allows direct sampling of high-IF architectures without external filtering degradation. |
| Power Consumption | 750 mW @ 125 MSPS - Optimized for thermal-constrained systems while maintaining performance. |
| Digital Output Interface | 1.8 V CMOS or LVDS - Provides flexibility for interfacing with FPGAs or ASICs across varying noise and timing budgets. |
Pinout & Package
The AD9268BCPZRL7-125 is housed in a 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, specified for −40°C to +85°C industrial operation. The exposed paddle must be soldered to AGND for proper thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+, CLK− | Differential Clock Input | Accepts CMOS/LVDS/LVPECL clocks; internal duty cycle stabilizer compensates for skew. |
| VIN+A, VIN−A / VIN+B, VIN−B | Differential Analog Inputs | Support 650 MHz bandwidth and 1–2 Vp-p full-scale range; require matched PCB routing. |
| D0A–D15A, D0B–D15B | Parallel Digital Outputs | 16-bit per channel; configurable as 1.8 V CMOS or LVDS; latency = 12/12.5 cycles. |
| DCOA, DCOB | Data Clock Outputs | Source-synchronous strobes aligned to respective channel data; critical for timing closure. |
| SYNC | Channel Synchronization Input | Enables deterministic phase alignment between dual channels or across multiple devices. |
| CSB, SCLK/DFS, SDIO/DCS | SPI Interface | 3-wire serial interface for register configuration, BIST control, and mode selection. |
| PDWN, OEB | Power & Output Control | Hardware-controlled power-down (<0.5 mW) and output enable for system-level power management. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dither option | Improves SFDR by >15 dB at low input levels (e.g., −23 dBFS), enabling cleaner small-signal detection. |
| Differential analog input architecture | Maintains 78.2 dBFS SNR up to 70 MHz input and supports IF sampling to 300 MHz without external baluns. |
| Single 1.8 V analog supply | Reduces board-level power delivery complexity and eliminates need for multiple analog rail regulators. |
| Programmable internal voltage reference | Eliminates external reference IC; supports 1.0 V mode with ±12 mV output error over temperature. |
| Built-in self-test (BIST) | Verifies ADC functionality without external stimulus-critical for field-deployed or safety-critical systems. |
| Pin compatibility with AD9258/AD9251 | Allows hardware reuse when migrating between 16-bit and 14-bit resolution or scaling down to lower sample rates. |
Applications
| Communications Receiver | Smart Antenna System |
|---|---|
Use Scenario: Multimode base station receiver digitizing 20 MHz LTE or 5 MHz W-CDMA carriers at IF. IC Role / Device Role / Timing Role: Dual-channel ADC captures I/Q signal pairs simultaneously with <1 ps aperture jitter for coherent demodulation. Use Value: 95 dB channel isolation prevents crosstalk-induced EVM degradation in MIMO configurations. |
Use Scenario: Beamforming array with 8–16 antenna elements requiring synchronized sampling across channels. IC Role / Device Role / Timing Role: Provides deterministic multichip sync via SYNC input and matching latency for time-aligned capture. Use Value: Enables sub-sample phase alignment across ADCs without FPGA-based deskew compensation. |
| Ultrasound Imaging | Software-Defined Radio (SDR) |
Use Scenario: Portable ultrasound front-end digitizing 5–15 MHz echo signals with variable gain amplification. IC Role / Device Role / Timing Role: High SNR and low input noise (−153.6 dBm/Hz) preserve weak echo fidelity at high frequencies. Use Value: 650 MHz analog input bandwidth supports third-harmonic imaging without aliasing. |
Use Scenario: Wideband SDR platform covering 70 MHz to 6 GHz using direct RF sampling or superheterodyne IF digitization. IC Role / Device Role / Timing Role: Dual 125 MSPS channels support real-time I/Q capture with flexible clock division (1–8×). Use Value: On-chip dither and programmable reference simplify calibration and improve dynamic range in adaptive modulation schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9269BCPZ-125 | Same 16-bit, 125 MSPS dual ADC but with extended input frequency support (up to 450 MHz) and improved SFDR (90 dBc @ 70 MHz). | Preferred for higher-IF or direct RF sampling where >300 MHz analog bandwidth is required. | Select AD9269BCPZ-125 when analog input frequencies exceed 300 MHz or SFDR margin is critical. |
| AD9680BCPZ-125 | 14-bit, 125 MSPS dual ADC with JESD204B serial output, lower power (550 mW), and no parallel CMOS/LVDS option. | Suitable for space-constrained designs interfacing with JESD204B-capable FPGAs; lacks parallel interface flexibility. | Choose AD9680BCPZ-125 for high-density, serial-link-based systems where PCB routing complexity must be minimized. |
Compared with AD9269BCPZ-125 and AD9680BCPZ-125, the AD9268BCPZRL7-125 offers optimal balance of 16-bit resolution, parallel interface versatility, and proven IF sampling performance up to 300 MHz-making it ideal for cost-sensitive, high-SNR communications infrastructure where layout control and timing determinism are prioritized.
Availability
AD9268BCPZRL7-125 is available at Aetrix Electronics and suitable for communications infrastructure, medical ultrasound equipment, and software-defined radio development requiring stable component supply and long-term industrial temperature support.
Supply support for AD9268BCPZRL7-125 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The AD9268 is part of Analog Devices' high-speed data converter product line, engineered for demanding communications applications where high dynamic range, low power, and multichannel synchronization are essential.
FAQ
What is the maximum analog input frequency supported by the AD9268BCPZRL7-125?
The AD9268BCPZRL7-125 supports analog input frequencies up to 300 MHz in IF sampling applications. Its differential analog input has a 650 MHz bandwidth, enabling clean digitization of high-frequency signals without significant amplitude roll-off or phase distortion up to that limit. This makes the AD9268BCPZRL7-125 suitable for direct IF sampling in LTE, WiMAX, and other broadband wireless systems.
Does the AD9268BCPZRL7-125 support both CMOS and LVDS digital outputs?
Yes, the AD9268BCPZRL7-125 supports configurable 1.8 V CMOS or LVDS digital outputs via the DRVDD supply and SPI register settings. In CMOS mode, it delivers 16-bit parallel data per channel with 12-cycle latency; in LVDS mode, it provides differential signaling with ANSI-compliant swing (290–400 mV) and reduced-swing option, improving noise immunity and timing margins in high-speed interfaces.
How does the on-chip dither function improve performance in the AD9268BCPZRL7-125?
The on-chip dither in the AD9268BCPZRL7-125 adds controlled noise to the analog input path, breaking up harmonic correlation and significantly improving SFDR-by up to 20 dB at −23 dBFS input levels. This feature is especially valuable in low-amplitude signal detection scenarios, such as radar pulse analysis or weak-channel reception in multicarrier systems, where spurious content would otherwise mask critical information.
What is the purpose of the SYNC pin on the AD9268BCPZRL7-125?
The SYNC pin on the AD9268BCPZRL7-125 enables deterministic synchronization between the two internal ADC channels or across multiple AD9268BCPZRL7-125 devices. When asserted, it resets internal pipeline stages and aligns sampling phases, ensuring precise time-coherent I/Q capture or multichip TDD/FDD alignment-essential for beamforming, MIMO, and phased-array applications requiring sub-nanosecond channel matching.
Is the AD9268BCPZRL7-125 pin-compatible with other members of the AD92xx family?
Yes, the AD9268BCPZRL7-125 is pin-compatible with the AD9258 (14-bit, 125 MSPS), AD9251 (14-bit, 80 MSPS), AD9231 (12-bit), and AD9204 (10-bit) families. This allows hardware reuse and simplified migration paths when adjusting resolution or power/performance trade-offs-without redesigning the PCB layout or changing passive component values around the ADC interface.
AD9268BCPZRL7-125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 125M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9268BCPZRL7-125 FAQ
1.How can I place an order for AD9268BCPZRL7-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9268BCPZRL7-125 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 AD9268BCPZRL7-125 reliable?
The price and inventory of AD9268BCPZRL7-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9268BCPZRL7-125 is usually 5 days.
3.What payment methods are accepted for AD9268BCPZRL7-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9268BCPZRL7-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9268BCPZRL7-125?
AD9268BCPZRL7-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9268BCPZRL7-125 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 AD9268BCPZRL7-125?
For technical support, including AD9268BCPZRL7-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9268BCPZRL7-125 requirements.
6.How does Aetrix verify that AD9268BCPZRL7-125 is sourced from the original manufacturer or authorized distributors?
All AD9268BCPZRL7-125 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 AD9268BCPZRL7-125 meets industry standards.
7.What is the process for return or replacement of AD9268BCPZRL7-125?
All AD9268BCPZRL7-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9268BCPZRL7-125, 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 AD9268BCPZRL7-125 part is unused and in its original packaging.
Return procedure for AD9268BCPZRL7-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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