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Analog Devices Inc. AD9248BCPZ-65
- Part No.:
- AD9248BCPZ-65
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9248BCPZ-65.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,101
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Product details
Overview
AD9248BCPZ-65 from Analog Devices is a dual-channel, 14-bit, 65 MSPS analog-to-digital converter (ADC) with differential input, integrated voltage reference, and clock duty cycle stabilizer. It delivers 71.6 dB SNR and 80.5 dBc SFDR at Nyquist, operates from a single 3 V supply (2.7–3.6 V), and consumes 600 mW total power. It is used in ultrasound equipment and IF-sampling receivers requiring high channel isolation and wide analog input bandwidth.
For engineers reviewing the AD9248BCPZ-65 datasheet, AD9248BCPZ-65 pinout, AD9248BCPZ-65 application, or AD9248BCPZ-65 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-ADC timing behavior, real-world crosstalk immunity (>85 dB), and precise data format control (offset binary/twos complement) - all specific to the AD9248BCPZ-65 speed grade and LFCSP package.
Technical Context
The AD9248BCPZ-65 implements a multistage differential pipelined architecture with output error correction logic to guarantee 14-bit accuracy and no missing codes across −40°C to +85°C. Its dual sample-and-hold amplifiers support 500 MHz 3 dB analog input bandwidth and flexible 1 Vp-p to 2 Vp-p differential input ranges.
It features independent or shared reference modes (controlled by SHARED_REF pin), dual single-ended clock inputs (CLK_A/CLK_B), and a clock duty cycle stabilizer (DCS) that maintains performance across wide duty cycle variations. Pipeline latency is fixed at 7 conversion cycles, with aperture uncertainty of 0.5 ps rms and wake-up time of 2.5 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full temperature range. |
| Max Sample Rate | 65 MSPS - defines maximum sustained throughput per channel; supports IF sampling up to ~32.5 MHz. |
| SNR @ fIN = 35 MHz | 71.6 dB - determines effective dynamic range for medium-frequency signal capture. |
| SFDR @ fIN = 35 MHz | 80.5 dBc - indicates spurious-free resolution for multi-tone or modulated signal digitization. |
| Crosstalk | >85 dB - ensures minimal coupling between Channel A and Channel B during simultaneous operation. |
| Power Consumption | 600 mW total - includes both channels at 65 MSPS; enables thermal management in compact medical or portable instruments. |
| Analog Input Bandwidth | 500 MHz (3 dB) - supports direct sampling of wideband IF signals without external amplification. |
| Aperture Uncertainty | 0.5 ps rms - limits jitter-induced noise floor degradation at high input frequencies. |
Pinout & Package
The AD9248BCPZ-65 is packaged in a Pb-free, 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad requiring connection to AGND. Pin numbering follows standard top-view orientation with pin 1 indicator; the exposed pad (EP) is electrically and thermally tied to AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+_A / VIN−_A | Differential analog input for Channel A | Accepts 1 Vp-p to 2 Vp-p differential signal; 7 pF input capacitance requires careful layout matching. |
| CLK_A / CLK_B | Asynchronous single-ended clock inputs | Control conversion timing per channel; duty cycle stabilizer (DCS) mitigates skew sensitivity. |
| D0_A–D13_A / D0_B–D13_B | Parallel digital outputs (14-bit per channel) | Configurable as offset binary or twos complement via DFS pin; OEB_A/OEB_B enable high-Z tri-state. |
| PDWN_A / PDWN_B | Channel power-down control | Logic 1 powers down respective channel; outputs hold last valid value (not high-Z). |
| SHARED_REF | Reference mode selection | High = shared reference between channels (reduces gain mismatch); low = independent references. |
| MUX_SELECT | Data multiplexing control | Enables single-port output mode: selects between Channel A or Channel B data on shared bus. |
| OTR_A / OTR_B | Out-of-range flag | Indicates overflow/underflow condition; used with MSB to distinguish high vs. low saturation. |
| AVDD / DRVDD / AGND / DRGND | Power and ground domains | Separate analog/digital supplies reduce noise coupling; decoupling required per datasheet (0.1 µF + 10 µF). |
Key Features
| Feature | Design Value |
|---|---|
| Dual 14-bit ADC with error correction | Guarantees no missing codes across industrial temperature range (−40°C to +85°C) at 65 MSPS. |
| Integrated voltage reference | 1.0 V (or 0.5 V) internal reference with ±35 mV output error; eliminates need for external precision reference. |
| Clock duty cycle stabilizer (DCS) | Compensates for wide clock duty cycle variation (e.g., 30%–70%), preserving AC performance without external circuitry. |
| Flexible data output format | Selectable offset binary or twos complement via DFS pin - simplifies interface to FPGA or DSP logic. |
| Channel isolation & crosstalk immunity | Typical >85 dB channel-to-channel isolation at 10 MHz enables simultaneous high-fidelity dual-channel acquisition. |
| Low-power 65 MSPS operation | 600 mW total (300 mW/channel) allows battery-powered or thermally constrained applications like hand-held scopemeters. |
Applications
| Ultrasound Beamforming | IF Sampling Receiver |
|---|---|
Use Scenario: Simultaneous digitization of multiple transducer channel echoes in phased-array ultrasound systems. IC Role / Device Role / Timing Role: Dual-channel ADC captures time-aligned RF echo data from two independent receive paths with matched gain/phase response. Use Value: >85 dB crosstalk prevents ghosting artifacts; 71.6 dB SNR preserves tissue contrast resolution at 12–20 MHz center frequencies. |
Use Scenario: Direct digitization of 70–120 MHz IF signals in WB-CDMA or WiMAX baseband receivers. IC Role / Device Role / Timing Role: High-bandwidth ADC samples beyond Nyquist to enable digital downconversion and channel filtering. Use Value: 500 MHz analog input bandwidth and 80.5 dBc SFDR support clean capture of adjacent-channel interference without analog pre-filtering. |
| Battery-Powered Scopemeter | Low-Cost Digital Oscilloscope |
Use Scenario: Portable field test instrument acquiring transient waveforms with dual-channel correlation capability. IC Role / Device Role / Timing Role: Dual ADC enables time-synchronized voltage/current measurements with hardware-triggered acquisition. Use Value: 600 mW total power and single 3 V supply simplify power design; 7-cycle pipeline latency enables deterministic trigger response. |
Use Scenario: Entry-level bench oscilloscope requiring cost-effective dual-channel 100+ MSa/s sampling. IC Role / Device Role / Timing Role: ADC front-end providing 14-bit resolution and parallel LVCMOS outputs compatible with FPGA-based waveform processing. Use Value: Pin-compatible upgrade path from AD9238-65; LFCSP package reduces PCB area versus LQFP while maintaining thermal performance. |
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 |
|---|---|---|---|
| AD9248BSTZ-65 | LQFP-64 package (vs. LFCSP-64); higher θJA = 54°C/W (vs. 26.4°C/W); identical electrical specs. | Preferred where manual assembly, rework, or thermal monitoring via case temperature is required. | Select AD9248BSTZ-65 when board-level reflow constraints or thermal test access favor LQFP over LFCSP. |
| AD9257BRUZ-65 | Single-channel, 14-bit, 65 MSPS; lower power (250 mW); no SHARED_REF or MUX_SELECT pins. | Used when only one high-performance channel is needed; lacks dual-channel synchronization features. | Choose AD9257BRUZ-65 to reduce system power and complexity in single-path signal chains where channel matching is irrelevant. |
Compared with AD9248BCPZ-65, the AD9248BSTZ-65 offers identical performance in a larger, more rework-friendly package, while the AD9257BRUZ-65 trades dual-channel capability for lower power and smaller footprint - making each suitable for distinct architectural trade-offs in medical, communications, or test equipment.
Availability
AD9248BCPZ-65 is available at Aetrix Electronics and suitable for ultrasound beamforming, IF sampling receivers, and battery-powered scopemeters requiring stable component supply and long-term industrial-grade availability.
Supply support for AD9248BCPZ-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.
The AD9248 belongs to Analog Devices' high-speed data converter product line, designed specifically for demanding communications, medical imaging, and instrumentation applications requiring dual-channel synchronization, low crosstalk, and wide analog bandwidth.
FAQ
What is the guaranteed operating temperature range for the AD9248BCPZ-65?
The AD9248BCPZ-65 is specified over the industrial temperature range of −40°C to +85°C. All DC and AC specifications - including no missing codes, SNR, SFDR, and crosstalk - are guaranteed across this full range when operated within recommended supply and clock conditions. The LFCSP package's low thermal resistance (θJA = 26.4°C/W) supports reliable operation at maximum ambient temperatures.
Does the AD9248BCPZ-65 support independent analog input ranges for each channel?
Yes, the AD9248BCPZ-65 supports independent analog input ranges per channel through its nonshared reference mode. When SHARED_REF is low, each channel (A and B) uses its own REFT/REFB pair, enabling different input spans (e.g., 1 Vp-p on Channel A, 2 Vp-p on Channel B) and independent DC offset control - critical for multiplexed sensor interfaces.
How does the clock duty cycle stabilizer (DCS) function in the AD9248BCPZ-65?
The DCS circuit in the AD9248BCPZ-65 actively corrects for wide variations in input clock duty cycle (e.g., 30%–70%) by generating an internally balanced clock signal. Enabled via the DCS pin, it ensures consistent aperture timing and preserves SNR/SFDR performance without requiring external clock conditioning - especially valuable in systems using PLL-derived clocks with poor duty cycle control.
Can the AD9248BCPZ-65 operate with a 2.5 V digital supply (DRVDD)?
Yes, the AD9248BCPZ-65 supports DRVDD from 2.25 V to 3.6 V, including 2.5 V. Digital outputs (D0–D13 per channel) swing between 0.05 V and DRVDD − 0.05 V under capacitive load, ensuring compatibility with 2.5 V FPGA or ASIC I/O standards. Decoupling with 0.1 µF + 10 µF capacitors to DRGND is mandatory for stable operation.
What is the purpose of the MUX_SELECT pin on the AD9248BCPZ-65?
The MUX_SELECT pin configures the AD9248BCPZ-65 for multiplexed data output mode, allowing either Channel A or Channel B data to appear on a single 14-bit bus. When asserted high, multiplexing is disabled (default parallel mode); when low, the device alternates between channels on successive conversions - reducing PCB trace count in resource-constrained digital interfaces.
AD9248BCPZ-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, 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.25V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9248BCPZ-65 FAQ
1.How can I place an order for AD9248BCPZ-65 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9248BCPZ-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 AD9248BCPZ-65 reliable?
The price and inventory of AD9248BCPZ-65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9248BCPZ-65 is usually 5 days.
3.What payment methods are accepted for AD9248BCPZ-65?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9248BCPZ-65 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9248BCPZ-65?
AD9248BCPZ-65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9248BCPZ-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 AD9248BCPZ-65?
For technical support, including AD9248BCPZ-65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9248BCPZ-65 requirements.
6.How does Aetrix verify that AD9248BCPZ-65 is sourced from the original manufacturer or authorized distributors?
All AD9248BCPZ-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 AD9248BCPZ-65 meets industry standards.
7.What is the process for return or replacement of AD9248BCPZ-65?
All AD9248BCPZ-65 units undergo pre-shipment inspection (PSI). If there is an issue with AD9248BCPZ-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 AD9248BCPZ-65 part is unused and in its original packaging.
Return procedure for AD9248BCPZ-65:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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