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Analog Devices Inc. AD9248BCPZ-40
- Part No.:
- AD9248BCPZ-40
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9248BCPZ-40.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,907
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Product details
Overview
AD9248BCPZ-40 from Analog Devices is a dual-channel, 14-bit, 40 MSPS analog-to-digital converter (ADC) fabricated in advanced CMOS. It features integrated sample-and-hold amplifiers, on-chip voltage reference, and differential input with 500 MHz bandwidth. Operating from a single 3 V supply (2.7–3.6 V), it delivers 72.8 dB SNR and 84 dBc SFDR at 2.4 MHz input, targeting IF sampling in wireless receivers and ultrasound front-ends.
For engineers reviewing the AD9248BCPZ-40 datasheet, AD9248BCPZ-40 pinout, AD9248BCPZ-40 application, or AD9248BCPZ-40 equivalent, key selection criteria include dual-channel crosstalk immunity (>85 dB), clock duty cycle stabilizer support, flexible 1–2 Vp-p input range, offset binary/twos complement output format, and LFCSP-64 package compatibility with industrial temperature operation (−40°C to +85°C).
Technical Context
The AD9248BCPZ-40 implements a multistage differential pipelined architecture with output error correction logic to guarantee 14-bit accuracy and no missing codes across temperature. Its dual SHA supports simultaneous sampling with exceptional channel isolation, enabling true time-interleaved or independent dual-channel acquisition.
It integrates a programmable internal voltage reference (1.0 V or 0.5 V mode), shared/independent reference configuration via SHARED_REF pin, and clock duty cycle stabilizer (DCS) that maintains performance across wide input clock duty cycle variation. Digital outputs are CMOS-compatible with DRVDD-supplied drivers and configurable OEB/PDWN control per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full industrial temperature range. |
| Sample Rate | 40 MSPS - fixed maximum conversion rate for this speed grade; enables IF sampling up to ~20 MHz Nyquist zone. |
| SNR @ 2.4 MHz | 72.8 dB (typ) - defines dynamic range for low-frequency signal capture; measured to Nyquist with −0.5 dBFS input. |
| SFDR @ 2.4 MHz | 84 dBc (typ) - indicates spurious-free performance critical for multi-carrier RF receiver applications. |
| Crosstalk | >85 dB - ensures minimal coupling between Channel A and B, essential for independent dual-signal acquisition. |
| Power Consumption | 330 mW total (165 mW/channel) - optimized for portable or thermally constrained systems at 40 MSPS. |
| Analog Input Bandwidth | 500 MHz (3 dB) - supports wideband IF inputs and undersampling of signals beyond baseband. |
| Supply Voltage | AVDD = 2.7–3.6 V, DRVDD = 2.25–3.6 V - single-supply operation simplifies power design; separate analog/digital rails reduce noise coupling. |
Pinout & Package
The AD9248BCPZ-40 is packaged in a Pb-free, 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad requiring connection to AGND. Pin layout supports dual independent ADC channels with dedicated clocks, data buses, power domains, and reference controls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+_A / VIN−_A | Differential analog input, Channel A | Accepts 1–2 Vp-p differential signal; high 500 MHz bandwidth enables IF sampling. |
| VIN+_B / VIN−_B | Differential analog input, Channel B | Electrically isolated from Channel A; >85 dB crosstalk supports concurrent dual-band acquisition. |
| CLK_A / CLK_B | Asynchronous sample clock inputs | Enable independent timing control per channel; DCS circuit compensates for duty cycle variation. |
| D0_A–D13_A / D0_B–D13_B | 14-bit parallel CMOS digital outputs | Configurable as offset binary or twos complement; OEB pins enable high-impedance bus sharing. |
| PDWN_A / PDWN_B | Channel power-down control | Logic 1 disables conversion and holds output static (not Hi-Z); reduces power during idle periods. |
| SHARED_REF | Reference topology selector | High = shared reference mode (improves gain matching); Low = independent reference (maximizes channel independence). |
| MUX_SELECT | Data multiplexing enable | Allows single-port readout by alternating Channel A/B data on one 14-bit bus; simplifies FPGA interface. |
| OTR_A / OTR_B | Out-of-range indicator | Flags overflow/underflow events; used with MSB to distinguish high vs. low saturation conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 14-bit pipelined ADC cores | Guarantees no missing codes and 14-bit linearity at 40 MSPS across −40°C to +85°C without calibration. |
| Integrated voltage reference | 1.0 V or 0.5 V output with ±35 mV error; eliminates need for external precision reference in most applications. |
| Clock duty cycle stabilizer (DCS) | Compensates for non-50% clock duty cycles, preserving SNR/SFDR without requiring external clock conditioning. |
| Flexible data output format | DFS pin selects offset binary (default) or twos complement - simplifies DSP interface alignment and sign handling. |
| Per-channel power management | Independent PDWN and OEB pins allow dynamic channel enable/disable and bus contention control in multi-ADC systems. |
| High analog input bandwidth | 500 MHz 3 dB bandwidth supports direct sampling of IF signals up to 120+ MHz with usable SNR. |
Applications
| Ultrasound Beamforming | IF Sampling Receiver |
|---|---|
|
Use Scenario: Simultaneous digitization of multiple transducer channel outputs in portable ultrasound systems. IC Role / Device Role / Timing Role: Dual-channel ADC captures echo return signals from adjacent transducer elements with precise time alignment. Use Value: >85 dB crosstalk prevents artifact generation during beam synthesis; 40 MSPS supports 10–20 MHz center frequency IF processing. |
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 performs undersampling to translate RF spectrum into baseband without analog mixers. Use Value: 500 MHz analog input bandwidth and 71.5 dB SNR at 35 MHz enable clean spectral reconstruction with minimal aliasing. |
| Battery-Powered Scopemeter | Low-Cost Digital Oscilloscope |
|
Use Scenario: Handheld test instrument requiring dual-channel waveform capture with real-time FFT and storage. IC Role / Device Role / Timing Role: Dual ADC provides synchronized sampling for Lissajous, math, and differential measurements. Use Value: 330 mW total power enables >4-hour battery life; 1–2 Vp-p input range accommodates passive probe attenuation directly. |
Use Scenario: Entry-level bench oscilloscope needing cost-effective dual-channel acquisition at ≤100 MHz effective bandwidth. IC Role / Device Role / Timing Role: ADC serves as front-end digitizer feeding FPGA-based trigger, memory, and display pipeline. Use Value: LFCSP-64 package reduces PCB area vs. LQFP; MUX_SELECT pin lowers FPGA I/O count by enabling single-bus readout. |
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 |
|---|---|---|---|
| AD9248BCPZ-65 | Higher 65 MSPS sample rate; 600 mW power; identical pinout and feature set. | Required for wider IF bandwidths (>32.5 MHz) or higher Nyquist zones; not drop-in due to increased thermal load. | Select AD9248BCPZ-65 only when system demands >40 MSPS throughput and can accommodate higher power dissipation. |
| AD9238BCPZ-40 | 12-bit resolution; same 40 MSPS speed, pin-compatible LFCSP-64 package, and shared functional architecture. | Lower dynamic range (67 dB SNR typ) suits less demanding applications like basic data loggers or sensor interfaces. | Choose AD9238BCPZ-40 where 12-bit resolution suffices and cost reduction is prioritized over SNR/SFDR performance. |
Compared with AD9248BCPZ-65, the AD9248BCPZ-40 trades 25 MSPS bandwidth and 270 mW extra power for improved thermal manageability and lower system cost; versus AD9238BCPZ-40, it delivers +6 dB SNR and +12 dB SFDR at identical speed and footprint-critical for RF and medical imaging signal fidelity.
Availability
AD9248BCPZ-40 is available at Aetrix Electronics and suitable for ultrasound equipment, IF sampling receivers, and battery-powered test instruments requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD9248BCPZ-40 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 product line delivers high-speed, high-resolution dual ADCs optimized for communications infrastructure, medical imaging, and instrumentation-designed to replace discrete ADC + reference + driver solutions with integrated, production-ready signal chains.
FAQ
What is the operating temperature range for the AD9248BCPZ-40?
The AD9248BCPZ-40 is specified for industrial temperature operation from −40°C to +85°C. This range is guaranteed for all DC and AC specifications including SNR, SFDR, INL, and crosstalk. The LFCSP package's low θJA (26.4°C/W) supports reliable thermal performance within this envelope when the exposed pad is soldered to AGND.
Does the AD9248BCPZ-40 require an external voltage reference?
No, the AD9248BCPZ-40 includes an integrated voltage reference with selectable 1.0 V or 0.5 V output. External reference is optional and only needed if higher precision or custom reference voltage is required. The internal reference has ±35 mV error over temperature and supports both shared and independent reference modes via the SHARED_REF pin.
How does the clock duty cycle stabilizer (DCS) function in the AD9248BCPZ-40?
The DCS circuit in the AD9248BCPZ-40 actively corrects non-50% clock duty cycles on CLK_A and CLK_B inputs, maintaining consistent aperture timing and preserving SNR/SFDR performance. When enabled (DCS pin high), it accepts duty cycles from 30% to 70% without degradation-eliminating need for external clock conditioners in space-constrained designs.
Can the AD9248BCPZ-40 operate with a single-ended analog input?
Yes, the AD9248BCPZ-40 supports single-ended analog inputs using either VIN+_A or VIN+_B referenced to AGND, though differential drive is recommended for optimal SNR and common-mode rejection. Input range remains configurable (1–2 Vp-p), and the SHA's wide bandwidth preserves fidelity even with single-ended source impedance mismatches.
What is the purpose of the MUX_SELECT pin on the AD9248BCPZ-40?
The MUX_SELECT pin enables data multiplexing mode, allowing interleaved output of Channel A and Channel B data onto a single 14-bit bus. When asserted, the ADC alternates valid samples between ports on successive clock cycles-reducing FPGA or processor I/O count and PCB routing complexity while retaining dual-channel capability.
AD9248BCPZ-40 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):
- 40M
- 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-40 FAQ
1.How can I place an order for AD9248BCPZ-40 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9248BCPZ-40 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-40 reliable?
The price and inventory of AD9248BCPZ-40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9248BCPZ-40 is usually 5 days.
3.What payment methods are accepted for AD9248BCPZ-40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9248BCPZ-40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9248BCPZ-40?
AD9248BCPZ-40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9248BCPZ-40 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-40?
For technical support, including AD9248BCPZ-40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9248BCPZ-40 requirements.
6.How does Aetrix verify that AD9248BCPZ-40 is sourced from the original manufacturer or authorized distributors?
All AD9248BCPZ-40 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-40 meets industry standards.
7.What is the process for return or replacement of AD9248BCPZ-40?
All AD9248BCPZ-40 units undergo pre-shipment inspection (PSI). If there is an issue with AD9248BCPZ-40, 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-40 part is unused and in its original packaging.
Return procedure for AD9248BCPZ-40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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