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Analog Devices Inc. AD9268BCPZ-80
- Part No.:
- AD9268BCPZ-80
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9268BCPZ-80.pdf
- Description:
- IC ADC 16BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,463
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Product details
Overview
AD9268BCPZ-80 from Analog Devices is a dual, 16-bit, 80 MSPS analog-to-digital converter (ADC) with differential pipelined architecture, 1.8 V analog supply, 1.8 V CMOS/LVDS digital outputs, and integrated duty cycle stabilizer. It delivers 78.2 dBFS SNR at 70 MHz input and supports IF sampling up to 300 MHz. Used in multimode wireless receivers for LTE/W-CDMA baseband digitization.
For engineers reviewing the AD9268BCPZ-80 datasheet, AD9268BCPZ-80 pinout, AD9268BCPZ-80 application, or AD9268BCPZ-80 equivalent, this page provides verified specifications, validated CMOS/LVDS pin mapping, confirmed dual-channel timing isolation (95 dB), real-world power consumption (450 mW @ 80 MSPS), and documented migration paths from AD9258/AD9251 families.
Technical Context
The AD9268BCPZ-80 implements two independent 16-bit pipelined ADC cores with integrated error correction logic, each supporting user-selectable 1–2 Vp-p differential input range and 650 MHz analog bandwidth. Its on-chip voltage reference and programmable dither enhance SFDR performance without external components.
It features a 3-wire SPI interface for configuration of data formatting (offset binary/twos complement), clock divider (1–8), power-down modes, and BIST activation. The duty cycle stabilizer compensates for clock asymmetry, maintaining SNR/SFDR integrity across temperature and process variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Enables high-fidelity digitization of wide dynamic range signals in communications and ultrasound systems. |
| Sample Rate | 80 MSPS - Supports Nyquist-sampled IF signals up to 40 MHz or undersampled RF bands up to 300 MHz. |
| SNR @ 70 MHz | 78.2 dBFS - Ensures >12.6 ENOB for accurate demodulation of dense QAM constellations in LTE/W-CDMA. |
| Power Consumption | 450 mW @ 80 MSPS - Optimized for thermal-constrained small-cell base stations and portable medical imaging equipment. |
| Analog Input Bandwidth | 650 MHz - Allows direct sampling of second-IF or low-IF signals without external amplification or filtering. |
| Channel Isolation | 95 dB - Prevents crosstalk between I/Q channels in diversity radio and smart antenna applications. |
| Digital Output Interface | 1.8 V CMOS or LVDS - Enables flexible interfacing with FPGA I/O banks (e.g., Xilinx Artix-7 or Intel Cyclone V) without level shifters. |
Pinout & Package
AD9268BCPZ-80 is housed in a 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad soldered to PCB ground plane for optimal thermal dissipation (θJA = 18.5°C/W, still air). Package dimensions: 9 mm × 9 mm × 0.85 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+, CLK− | Differential clock input | Accepts CMOS/LVDS/LVPECL clocks; internal bias enables single-ended drive if needed; DCS corrects duty cycle distortion. |
| VIN+A/VIN−A, VIN+B/VIN−B | Differential analog inputs (Ch A/B) | 650 MHz bandwidth; support 1–2 Vp-p swing; require matched 100 Ω termination for LVDS-driven sources. |
| D0A–D15A, D0B–D15B | Parallel digital outputs | 16-bit CMOS outputs (1.8 V) or interleaved LVDS pairs; latency fixed at 12/12.5 cycles for deterministic timing alignment. |
| DCOA, DCOB | Data clock outputs | Synchronous LVDS/CMOS clocks aligned to output data edges; essential for FPGA capture timing closure. |
| PDWN, OEB | Control inputs | Asynchronous power-down (<0.5 mW) and output enable allow dynamic power gating per channel in burst-mode systems. |
| CSB, SCLK/DFS, SDIO/DCS | SPI interface | 3-wire serial port configures register 0x17 for DCO delay tuning, enables BIST, and selects reference mode (internal/external). |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dither | Improves SFDR by ≥15 dB at −23 dBFS input, enabling clean reception of weak adjacent-channel signals in crowded spectrum. |
| Integer 1-to-8 clock divider | Allows use of lower-frequency, lower-jitter master clocks (e.g., 10–20 MHz crystal oscillators) while maintaining precise sample rate control. |
| Built-in self-test (BIST) | Verifies ADC functionality without external stimulus-critical for field-deployed telecom equipment requiring periodic health checks. |
| Flexible voltage reference | Internal 1.0 V reference (±12 mV error) or external reference via VREF/SENSE pins simplifies system-level calibration and reduces BOM count. |
| Multi-chip sync (MCS) | SYNC pin enables deterministic phase alignment across multiple AD9268 devices for coherent MIMO antenna array digitization. |
Applications
| Communications Baseband Digitization | Diversity Radio Receivers |
|---|---|
|
Use Scenario: Digitizing I/Q baseband signals from quadrature downconverters in LTE femtocells and small-cell BTS. IC Role / Device Role / Timing Role: Dual-channel ADC captures synchronized I and Q paths with 95 dB isolation, enabling accurate complex signal reconstruction. Use Value: 78.2 dBFS SNR at 70 MHz ensures <0.5% EVM for 256-QAM modulation, meeting 3GPP Release 10 requirements. |
Use Scenario: Simultaneous sampling of spatially separated antenna signals in 2×2 MIMO WiMAX receivers. IC Role / Device Role / Timing Role: Two independent 16-bit ADCs with multi-chip sync (SYNC pin) maintain sub-10 ps inter-channel skew across boards. Use Value: 650 MHz analog bandwidth allows direct sampling of 2.3–2.4 GHz band with minimal front-end filtering, reducing component count. |
| Ultrasound Beamforming | Software-Defined Radio (SDR) |
|
Use Scenario: Digitizing 5–15 MHz echo return signals from phased-array transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Dual ADC channels acquire time-aligned RF echoes from adjacent transducer elements for digital beam steering. Use Value: 450 mW total power enables integration into battery-powered handheld units without active cooling. |
Use Scenario: Wideband signal acquisition in cognitive radio platforms supporting GSM/EDGE/W-CDMA/LTE reconfiguration. IC Role / Device Role / Timing Role: Reconfigurable SPI interface dynamically adjusts clock divider, data format, and dither to match protocol-specific bandwidth needs. Use Value: Pin compatibility with AD9258 (14-bit) allows hardware reuse when trading resolution for higher sample rates in adaptive architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 16-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9268BCPZ-105 | Higher 105 MSPS sample rate; 79.0 dBFS SNR @ 70 MHz; 590 mW power @ 105 MSPS. | Required for wider instantaneous bandwidth (e.g., 50 MHz LTE carriers or 20 MHz WiMAX channels). | Select AD9268BCPZ-105 when system demands >80 MSPS without sacrificing 16-bit resolution or SNR. |
| AD9258BCPZ-80 | 14-bit resolution; identical 80 MSPS rate, pinout, and LFCSP-64 package; 75.5 dBFS SNR @ 70 MHz. | Used where lower resolution suffices (e.g., legacy GSM/EDGE baseband) and cost or power reduction is prioritized. | Choose AD9258BCPZ-80 for drop-in replacement when 14-bit ENOB meets system linearity requirements and saves $1.20/unit. |
Compared with AD9268BCPZ-105, the AD9268BCPZ-80 trades 25 MSPS bandwidth and ~0.8 dB SNR for 140 mW lower power and tighter thermal design margin; versus AD9258BCPZ-80, it adds 2 bits of resolution and 2.7 dB SFDR at same speed-critical for high-order QAM in modern cellular standards.
Availability
AD9268BCPZ-80 is available at Aetrix Electronics and suitable for communications infrastructure, medical ultrasound, and software-defined radio applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD9268BCPZ-80 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9268 belongs to Analog Devices' high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring wide bandwidth, high resolution, and low power in compact packages.
FAQ
What is the maximum analog input frequency supported by the AD9268BCPZ-80?
The AD9268BCPZ-80 supports analog input frequencies up to 300 MHz using IF sampling techniques. Its 650 MHz analog input bandwidth ensures minimal amplitude roll-off and phase distortion at these frequencies, enabling direct digitization of second-IF signals in wireless infrastructure without additional gain stages.
Does the AD9268BCPZ-80 support both CMOS and LVDS digital outputs simultaneously?
No-the AD9268BCPZ-80 supports either 1.8 V CMOS or LVDS output mode, selected via SPI register configuration. CMOS mode uses single-ended D0A–D15A/D0B–D15B outputs; LVDS mode requires interleaved differential pairs (e.g., D0+/D0−) and separate DCO+/DCO− clock outputs.
How does the on-chip dither improve SFDR performance in the AD9268BCPZ-80?
The AD9268BCPZ-80's optional on-chip dither injects controlled noise to randomize quantization error, raising the noise floor but suppressing harmonic spurs. At −23 dBFS input, dither improves SFDR by up to 15 dB (e.g., from 88 dBc to 107 dBc @ 70 MHz), critical for detecting weak signals near strong interferers.
What is the purpose of the SYNC pin on the AD9268BCPZ-80?
The SYNC pin enables deterministic multi-chip synchronization across multiple AD9268BCPZ-80 devices. When asserted synchronously with the ADC clock, it resets internal pipeline stages to align sampling instants-essential for coherent beamforming in MIMO and phased-array systems.
Can the AD9268BCPZ-80 operate with an external voltage reference?
Yes-the AD9268BCPZ-80 supports both internal (1.0 V ±12 mV) and external reference configurations. Connecting an external reference to VREF and setting SENSE appropriately allows system-level calibration and improved temperature stability beyond the internal reference's ±15 ppm/°C drift.
AD9268BCPZ-80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 80M
- 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:
- -
AD9268BCPZ-80 FAQ
1.How can I place an order for AD9268BCPZ-80 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9268BCPZ-80 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 AD9268BCPZ-80 reliable?
The price and inventory of AD9268BCPZ-80 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9268BCPZ-80 is usually 5 days.
3.What payment methods are accepted for AD9268BCPZ-80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9268BCPZ-80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9268BCPZ-80?
AD9268BCPZ-80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9268BCPZ-80 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 AD9268BCPZ-80?
For technical support, including AD9268BCPZ-80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9268BCPZ-80 requirements.
6.How does Aetrix verify that AD9268BCPZ-80 is sourced from the original manufacturer or authorized distributors?
All AD9268BCPZ-80 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 AD9268BCPZ-80 meets industry standards.
7.What is the process for return or replacement of AD9268BCPZ-80?
All AD9268BCPZ-80 units undergo pre-shipment inspection (PSI). If there is an issue with AD9268BCPZ-80, 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 AD9268BCPZ-80 part is unused and in its original packaging.
Return procedure for AD9268BCPZ-80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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