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Analog Devices Inc. AD9251BCPZ-65
- Part No.:
- AD9251BCPZ-65
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9251BCPZ-65.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
AD9251BCPZ-65 from Analog Devices is a dual-channel, 14-bit, 65 MSPS analog-to-digital converter operating from a single 1.8 V analog supply with 2 Vp-p differential input range, 74.3 dBFS SNR at 9.7 MHz, and 93 dBc SFDR at 200 MHz - deployed in diversity radio receivers and ultrasound front-ends.
For engineers reviewing the AD9251BCPZ-65 datasheet, AD9251BCPZ-65 pinout, AD9251BCPZ-65 application, or AD9251BCPZ-65 equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial-temperature operation (−40°C to +85°C), and real-world timing and power data for I/Q demodulation, smart antenna, and portable medical imaging designs.
Technical Context
The AD9251BCPZ-65 implements a multistage differential pipeline ADC architecture with output error correction logic, guaranteeing 14-bit accuracy and no missing codes across its full temperature range. It supports differential clock inputs (CMOS/LVDS/LVPECL) and includes an on-chip voltage reference and sample-and-hold circuit optimized for 700 MHz analog input bandwidth.
Its digital interface offers programmable data formatting (offset binary/gray/twos complement), integer 1-to-8 clock division, data clock out (DCO) with programmable alignment, and built-in deterministic/pseudorandom test pattern generation via SPI - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over −40°C to +85°C. |
| Sample Rate | 65 MSPS - fixed maximum conversion rate for this variant; supports real-time baseband sampling in LTE/W-CDMA receivers. |
| SNR @ 9.7 MHz | 74.3 dBFS - enables high-fidelity digitization of narrowband IF signals with low quantization noise floor. |
| SFDR @ 200 MHz | 80 dBc - ensures spurious-free dynamic range for wideband radar/LIDAR intermediate frequency capture. |
| Analog Input BW | 700 MHz - supports direct RF sampling up to UHF band without external anti-alias filtering. |
| Power @ 65 MSPS | 73 mW per channel (AVDD + DRVDD = 1.8 V) - enables battery-powered handheld scope meters and portable ultrasound systems. |
| Differential Nonlinearity | ±0.45 LSB (typ, 25°C) - maintains signal integrity in precision I/Q demodulation where amplitude matching is critical. |
Pinout & Package
The AD9251BCPZ-65 is housed in a 64-lead RoHS-compliant LFCSP (CP-64-17) with exposed paddle soldered to AGND for thermal and noise performance. Pin numbering follows top-view layout with Channel A and B outputs segregated for low-crosstalk interleaved operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+, CLK− | Differential encode clock input | Accepts CMOS/LVDS/LVPECL; internal bias sets common-mode at 0.9 V; enables jitter-insensitive sampling up to 625 MHz input clock. |
| VIN+A, VIN−A / VIN+B, VIN−B | Differential analog inputs (dual channel) | 700 MHz bandwidth; 2 Vp-p full-scale range; 6 pF input capacitance - matched pair for I/Q signal acquisition. |
| D0A–D13A, D0B–D13B | CMOS digital outputs (14-bit per channel) | MSB-aligned parallel outputs; support 1.8 V to 3.3 V logic levels; multiplex option reduces bus width in space-constrained designs. |
| DCOA, DCOB | Data clock outputs | Source-synchronous clocks aligned to respective channel data; ±0.1 ns skew ensures reliable latch timing at 65 MSPS. |
| PDWN, OEB, CSB, SCLK/DFS, SDIO/DCS | Control and SPI interface pins | 30 kΩ internal pull-up/down resistors eliminate need for external biasing; enable power-down, output enable, and register configuration without glue logic. |
| VREF, SENSE, VCM, RBIAS | Reference and bias control | On-chip 1.0 V reference (±12 mV tolerance); VCM provides mid-supply common-mode; RBIAS sets analog bias current via 10 kΩ resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Single 1.8 V analog supply | Eliminates multi-rail power design; reduces PCB area and BOM count versus legacy 3.3 V/5 V ADCs. |
| Programmable clock/data alignment | Enables precise timing closure in FPGA-based receivers without external delay lines or phase shifters. |
| Built-in deterministic test patterns | Allows production-line functional validation without external signal generators - critical for medical ultrasound manufacturing. |
| Optional duty cycle stabilizer (DCS) | Compensates for >40% clock duty cycle variation while maintaining SNR >71 dBFS at 200 MHz input - simplifies clock tree design. |
| Pin compatibility with AD9268/AD9258/AD9231/AD9204 | Supports hardware reuse across 10–16-bit resolution upgrades within same 64-lead LFCSP footprint - lowers platform development cost. |
Applications
| Communications Receiver | Ultrasound Imaging |
|---|---|
|
Use Scenario: Dual-channel I/Q sampling in W-CDMA/LTE base station diversity receivers. IC Role / Device Role / Timing Role: Simultaneous digitization of in-phase and quadrature baseband signals at 65 MSPS with matched gain/phase response. Use Value: 74.3 dBFS SNR and <±0.45 LSB DNL ensure accurate constellation mapping for 64-QAM modulation schemes. |
Use Scenario: Beamforming front-end in portable ultrasound systems with 128-channel receive paths. IC Role / Device Role / Timing Role: High-speed digitization of echo return signals from piezoelectric transducers with low-latency pipeline (9 cycles). Use Value: 700 MHz analog input bandwidth captures harmonics up to 15 MHz transducer frequencies without external filtering. |
| Radar/LIDAR Signal Capture | Smart Antenna Calibration |
|
Use Scenario: Intermediate frequency sampling in FMCW radar modules operating at 24 GHz carrier. IC Role / Device Role / Timing Role: Digitizing downconverted IF signals (e.g., 70–200 MHz) with minimal spurious content. Use Value: 80 dBc SFDR at 200 MHz prevents false target detection caused by harmonic distortion in range-Doppler processing. |
Use Scenario: Real-time calibration of adaptive antenna array elements in 5G NR base stations. IC Role / Device Role / Timing Role: Synchronized dual-channel acquisition of pilot tones across adjacent RF chains for phase/gain correction. Use Value: Channel-to-channel matching (±0.65% gain error, ±0.65% offset error) enables sub-degree beam steering accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9251BCPZ-80 | Higher 80 MSPS sample rate; 73.6 dBFS SNR at 200 MHz; 146.5 mW power at DRVDD = 1.8 V. | Required for wider instantaneous bandwidth in broadband spectrum analyzers or high-resolution radar. | Select when system demands >65 MSPS throughput and can accommodate higher power dissipation. |
| AD9258BCPZ-65 | Same 65 MSPS rating but 14-bit resolution with improved 75.5 dBFS SNR at 9.7 MHz and lower 65 mW/channel power. | Better suited for ultra-low-noise communications receivers where SNR margin is critical. | Choose for enhanced dynamic range in sensitive IF sampling applications with tighter power budgets. |
Compared with AD9251BCPZ-80 and AD9258BCPZ-65, the AD9251BCPZ-65 delivers optimal balance of SNR, power, and pin compatibility for cost-sensitive, volume-manufactured diversity radios and portable medical devices - without requiring PCB redesign.
Availability
AD9251BCPZ-65 is available at Aetrix Electronics and suitable for communications infrastructure, portable medical imaging, and radar signal processing requiring stable component supply across extended product lifecycles.
Supply support for AD9251BCPZ-65 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 AD9251 belongs to Analog Devices' high-speed data converter product line, engineered for demanding communications, instrumentation, and medical applications requiring precision, low power, and robust industrial-temperature operation.
FAQ
What is the guaranteed operating temperature range for the AD9251BCPZ-65?
The AD9251BCPZ-65 is specified over the industrial temperature range of −40°C to +85°C. This rating is guaranteed across all DC and AC specifications including SNR, SFDR, DNL, and INL, with no missing codes ensured across the full range. The LFCSP package's exposed paddle must be soldered to AGND to maintain thermal performance and reliability at temperature extremes.
Does the AD9251BCPZ-65 support both LVDS and CMOS clock inputs?
Yes, the AD9251BCPZ-65 accepts differential clock inputs compliant with CMOS, LVDS, or LVPECL standards on CLK+ and CLK− pins. Its internal common-mode bias is fixed at 0.9 V, and it tolerates differential input voltages from 0.2 Vp-p to 3.6 Vp-p, enabling direct interface with diverse clock sources without level-shifting circuitry.
How does the duty cycle stabilizer (DCS) function in the AD9251BCPZ-65?
The DCS in the AD9251BCPZ-65 dynamically corrects clock duty cycle variations - maintaining >71 dBFS SNR even with input duty cycles ranging from 30% to 70%. It operates transparently when enabled via the SDIO/DCS pin or SPI register, requiring no additional timing constraints or calibration, and preserves aperture jitter below 0.1 ps rms.
Can the AD9251BCPZ-65 output data be multiplexed onto a single bus?
Yes, the AD9251BCPZ-65 supports data output multiplexing via its MODE pin and SPI configuration. When enabled, Channel A and Channel B 14-bit words are interleaved on shared D0–D13 pins with time-division multiplexing, reducing PCB trace count and simplifying interface to resource-constrained FPGAs or microcontrollers.
What reference voltage options are available for the AD9251BCPZ-65?
The AD9251BCPZ-65 integrates a 1.0 V internal reference (±12 mV tolerance) and supports external reference input via the VREF pin. The SENSE pin selects between internal (grounded) or external (open) reference mode. VCM provides a buffered mid-supply voltage (0.9 V) to set analog input common-mode level, ensuring optimal ADC performance with differential drivers.
AD9251BCPZ-65 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):
- 65M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- 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 ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9251BCPZ-65 FAQ
1.How can I place an order for AD9251BCPZ-65 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9251BCPZ-65 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 AD9251BCPZ-65 reliable?
The price and inventory of AD9251BCPZ-65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9251BCPZ-65 is usually 5 days.
3.What payment methods are accepted for AD9251BCPZ-65?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9251BCPZ-65 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9251BCPZ-65?
AD9251BCPZ-65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9251BCPZ-65 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 AD9251BCPZ-65?
For technical support, including AD9251BCPZ-65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9251BCPZ-65 requirements.
6.How does Aetrix verify that AD9251BCPZ-65 is sourced from the original manufacturer or authorized distributors?
All AD9251BCPZ-65 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 AD9251BCPZ-65 meets industry standards.
7.What is the process for return or replacement of AD9251BCPZ-65?
All AD9251BCPZ-65 units undergo pre-shipment inspection (PSI). If there is an issue with AD9251BCPZ-65, 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 AD9251BCPZ-65 part is unused and in its original packaging.
Return procedure for AD9251BCPZ-65:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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