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Analog Devices Inc. AD9258BCPZ-105
- Part No.:
- AD9258BCPZ-105
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9258BCPZ-105.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,045
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Product details
Overview
AD9258BCPZ-105 from Analog Devices is a dual, 14-bit, 105 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 and digital supply operation, SNR of 77.6 dBFS at 70 MHz input, and supports CMOS or LVDS output formats in a 64-lead LFCSP package. It is used in multimode digital receivers including LTE and W-CDMA baseband sampling.
For engineers reviewing the AD9258BCPZ-105 datasheet, AD9258BCPZ-105 pinout, AD9258BCPZ-105 application, or AD9258BCPZ-105 equivalent, key selection criteria include sample rate (105 MSPS), dual-channel interleaving capability, on-chip dither for SFDR improvement, integer clock divider (1–8), and channel isolation of 95 dB - all critical for IF-sampling radio architectures requiring precise timing and low crosstalk.
Technical Context
The AD9258BCPZ-105 implements a multistage differential pipelined ADC architecture with integrated error correction logic and a duty cycle stabilizer to maintain performance under variable clock duty cycles. Its analog front end includes wide-bandwidth differential sample-and-hold amplifiers supporting up to 300 MHz IF sampling frequencies.
It provides flexible digital interface options: 14-bit parallel CMOS or LVDS outputs, programmable data formatting (offset binary, two's complement, gray code), and a 3-wire SPI-compatible serial port for configuration of voltage reference mode, power-down states, BIST, and clock divider settings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete amplitude levels per sample, enabling high-fidelity digitization of wide dynamic range RF/IF signals. |
| Sample Rate | 105 MSPS - supports Nyquist-limited instantaneous bandwidth up to ~52.5 MHz, suitable for direct sampling of LTE 20 MHz channels or dual-carrier W-CDMA. |
| SNR @ 70 MHz | 77.6 dBFS - ensures >12.5 effective bits at IF frequencies common in diversity receiver front ends. |
| Input Bandwidth | 650 MHz - allows broadband analog input conditioning without external filtering degradation up to UHF band. |
| Power Consumption | 750 mW @ 125 MSPS (typical), scaled proportionally - enables thermal management in dense RF module layouts with 1.8 V single-supply operation. |
| Channel Isolation | 95 dB - minimizes inter-channel crosstalk in I/Q demodulation systems, preserving image rejection ratio in software-defined radios. |
| Clock Input | Differential CLK+/CLK− accepting CMOS/LVDS/LVPECL - simplifies clock tree design and improves jitter immunity in noisy baseband environments. |
Pinout & Package
The AD9258BCPZ-105 is housed in a 64-lead, 9 mm × 9 mm LFCSP package with exposed thermal pad (AGND) requiring solder connection to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+, CLK− | Differential ADC clock input | Accepts high-frequency clock with duty cycle stabilization; determines sampling instant with 0.07 ps rms aperture jitter. |
| VIN+A, VIN−A / VIN+B, VIN−B | Differential analog inputs (Ch A/B) | 650 MHz bandwidth, 200 Ω input impedance; support 1 Vp-p to 2 Vp-p full-scale range with internal common-mode bias (VCM). |
| D0A–D13A, D0B–D13B | Parallel digital outputs (14-bit each channel) | Configurable as 1.8 V CMOS or LVDS; MSB-aligned, with pipeline latency of 12/12.5 cycles in respective modes. |
| DCOA, DCOB | Data clock outputs (Ch A/B) | Synchronous with output data edges; used for timing capture in FPGA/ASIC interfaces with adjustable skew via SPI register 0x17. |
| CSB, SCLK/DFS, SDIO/DCS | SPI serial interface | 3-wire control bus for real-time configuration of reference mode, dither, power states, and output format without interrupting conversion. |
| PDWN, OEB | Hardware control inputs | Asynchronous power-down (0.5 mW) and output enable (active-low) allow rapid state transitions independent of SPI activity. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dither option | Improves SFDR by ≥15 dB at −23 dBFS input (e.g., 106 dBFS vs. 91 dBFS), enabling clean digitization of low-level interferers in crowded spectrum. |
| Integer 1-to-8 clock divider | Allows use of lower-frequency, lower-jitter master clocks (e.g., 210 MHz ÷ 2 = 105 MSPS), reducing EMI and simplifying clock synthesis. |
| Built-in self-test (BIST) | Verifies ADC core functionality and data path integrity without external stimulus - critical for field-deployed telecom equipment validation. |
| Flexible voltage reference | Programmable internal 1.0 V reference or external reference via VREF/SENSE/RBIAS pins - supports system-level gain calibration and noise floor optimization. |
| Multi-chip synchronization (MCS) | SYNC pin enables deterministic phase alignment across multiple AD9258 devices - essential for phased-array antenna and MIMO receiver coherence. |
Applications
| Communications Baseband Sampling | I/Q Demodulation Systems |
|---|---|
|
Use Scenario: Digitizing downconverted LTE FDD/TDD or W-CDMA signals in macrocell and small-cell base station transceivers. IC Role / Device Role / Timing Role: Dual-channel ADC acquiring I and Q paths simultaneously with matched gain/phase response and 95 dB isolation. Use Value: Enables direct IF sampling at 70–140 MHz with 77.6 dBFS SNR, eliminating analog quadrature mixers and reducing component count. |
Use Scenario: Converting complex baseband outputs from zero-IF or low-IF modulators in software-defined radio platforms. IC Role / Device Role / Timing Role: Synchronized dual ADC capturing in-phase and quadrature components with sub-1 ps inter-channel skew. Use Value: Preserves IQ imbalance <0.1° and <0.05 dB over temperature, maintaining EVM compliance for 256-QAM transmission. |
| Smart Antenna Beamforming | Ultrasound Digital Beamformer |
|
Use Scenario: High-channel-count receive arrays in 5G massive MIMO base stations requiring coherent sampling across dozens of RF chains. IC Role / Device Role / Timing Role: Multi-device synchronized ADC node providing deterministic latency and phase-aligned samples via SYNC/MCS protocol. Use Value: Supports real-time beam steering with ≤100 ps inter-device timing error, enabling narrow angular resolution (<5°) at 3.5 GHz. |
Use Scenario: Digitizing echo return signals from 64+ transducer elements in portable and cart-based ultrasound systems. IC Role / Device Role / Timing Role: Low-noise ADC with −152.8 dBm/Hz input noise density and 14-bit resolution for high-contrast B-mode imaging. Use Value: Achieves >100 dB dynamic range over 1–15 MHz bandwidth, resolving subtle tissue boundaries while suppressing acoustic clutter. |
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 |
|---|---|---|---|
| AD9258BCPZ-125 | Higher sample rate (125 MSPS), higher power (777 mW typ), identical pinout and feature set. | Required for wider instantaneous bandwidth (>60 MHz) or oversampling in radar pulse compression. | Select when system demands >105 MSPS; otherwise AD9258BCPZ-105 offers optimal power/performance trade-off. |
| AD9268BCPZ-105 | 16-bit resolution, same 105 MSPS rate, pin-compatible but higher power (1.25 W) and larger input capacitance (10 pF). | Suitable where ENOB >13.5 bits is mandatory (e.g., high-fidelity test equipment), not for cost/power-constrained comms. | Choose only if 16-bit resolution justifies +67% power increase and revised anti-alias filter design. |
Compared with AD9258BCPZ-125 and AD9268BCPZ-105, the AD9258BCPZ-105 delivers the best balance of 14-bit fidelity, 105 MSPS throughput, and 750 mW power efficiency for mainstream wireless infrastructure - avoiding unnecessary overhead while maintaining full feature compatibility.
Availability
AD9258BCPZ-105 is available at Aetrix Electronics and suitable for communications infrastructure, medical ultrasound, and defense radar applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for AD9258BCPZ-105 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, with R&D and manufacturing facilities worldwide.
The AD9258 belongs to Analog Devices' high-speed ADC product line, engineered specifically for demanding communications and instrumentation applications where dynamic range, sampling fidelity, and multi-channel synchronization are critical.
FAQ
What is the maximum analog input frequency supported by the AD9258BCPZ-105?
The AD9258BCPZ-105 supports analog input frequencies up to 300 MHz, enabled by its proprietary differential input architecture and 650 MHz analog input bandwidth. This allows direct undersampling of IF signals in GSM, LTE, and WiMAX receivers without intermediate frequency translation stages.
Does the AD9258BCPZ-105 support both CMOS and LVDS digital output interfaces?
Yes, the AD9258BCPZ-105 supports configurable 14-bit parallel outputs in either 1.8 V CMOS or LVDS format. Output mode is selected via SPI register settings or hardware pin strapping, and DRVDD must be supplied at 1.8 V in either configuration.
How does the on-chip dither function improve SFDR performance in the AD9258BCPZ-105?
The AD9258BCPZ-105's optional on-chip dither adds controlled noise to the analog input path, randomizing quantization distortion and converting harmonic spurs into broadband noise. At −23 dBFS input, this raises SFDR from 89 dBc to 106 dBFS - critical for detecting weak signals adjacent to strong interferers.
What is the purpose of the SYNC pin on the AD9258BCPZ-105?
The SYNC pin on the AD9258BCPZ-105 enables multi-chip synchronization (MCS) by aligning the internal sampling phase across multiple devices. When asserted synchronously with the clock, it resets pipeline stages to ensure deterministic inter-device timing - essential for phased-array and MIMO systems.
Can the AD9258BCPZ-105 operate with an external voltage reference?
Yes, the AD9258BCPZ-105 supports both internal (1.0 V) and external voltage references. The SENSE pin selects reference mode, and RBIAS/VREF pins configure external biasing. External reference use maintains full 14-bit linearity while allowing system-level gain calibration and noise floor tuning.
AD9258BCPZ-105 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:
- 14
- Sampling Rate (Per Second):
- 105M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - 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:
- -
AD9258BCPZ-105 FAQ
1.How can I place an order for AD9258BCPZ-105 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9258BCPZ-105 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 AD9258BCPZ-105 reliable?
The price and inventory of AD9258BCPZ-105 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9258BCPZ-105 is usually 5 days.
3.What payment methods are accepted for AD9258BCPZ-105?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9258BCPZ-105 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9258BCPZ-105?
AD9258BCPZ-105 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9258BCPZ-105 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 AD9258BCPZ-105?
For technical support, including AD9258BCPZ-105 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9258BCPZ-105 requirements.
6.How does Aetrix verify that AD9258BCPZ-105 is sourced from the original manufacturer or authorized distributors?
All AD9258BCPZ-105 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 AD9258BCPZ-105 meets industry standards.
7.What is the process for return or replacement of AD9258BCPZ-105?
All AD9258BCPZ-105 units undergo pre-shipment inspection (PSI). If there is an issue with AD9258BCPZ-105, 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 AD9258BCPZ-105 part is unused and in its original packaging.
Return procedure for AD9258BCPZ-105:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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