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Analog Devices Inc. AD9238BCPZ-65
- Part No.:
- AD9238BCPZ-65
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9238BCPZ-65.pdf
- Description:
- IC ADC 12BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,685
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Product details
Overview
AD9238BCPZ-65 from Analog Devices is a dual-channel, 12-bit, 65 MSPS analog-to-digital converter (ADC) fabricated in advanced CMOS. It features integrated sample-and-hold amplifiers, on-chip voltage reference, and differential inputs with 500 MHz bandwidth. Its SNR of 70 dB and SFDR of 80.5 dBc at Nyquist support high-fidelity digitization in ultrasound and IF sampling receivers.
For engineers reviewing the AD9238BCPZ-65 datasheet, AD9238BCPZ-65 pinout, AD9238BCPZ-65 application, or AD9238BCPZ-65 equivalent, key selection factors include dual-channel crosstalk immunity (>85 dB), clock duty cycle stabilization, flexible 1–2 Vp-p input range, and low-power operation (600 mW total at 65 MSPS).
Technical Context
The AD9238BCPZ-65 employs a multistage differential pipelined architecture with output error correction logic to guarantee 12-bit accuracy and no missing codes across −40°C to +85°C. It supports independent or shared reference modes via SHARED_REF control and enables channel-specific power-down (PWDN_A/PWDN_B) and output enable (OEB_A/OEB_B).
Dual single-ended clock inputs (CLK_A/CLK_B) drive conversion cycles, while the integrated duty cycle stabilizer (DCS) maintains performance over wide clock duty cycle variation. Data output format (offset binary or twos complement) is selectable via DFS, and multiplexed data output mode is configurable using MUX_SELECT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonicity and no missing codes over full industrial temperature range. |
| Sample Rate | 65 MSPS - maximum sustained conversion rate for real-time digitization of wideband signals up to ~32.5 MHz (Nyquist). |
| SNR / SFDR | 70 dB / 80.5 dBc at fIN = 32.5 MHz - enables high dynamic range signal capture in communications and instrumentation. |
| Input Bandwidth | 500 MHz (3 dB) - supports direct RF sampling and high-frequency IF digitization without external amplification. |
| Power Consumption | 600 mW total (300 mW/channel) at 65 MSPS - optimized for portable and thermally constrained systems. |
| Crosstalk | >85 dB - ensures minimal inter-channel interference in time-interleaved or simultaneous dual-signal acquisition. |
| Analog Supply | 2.7 V to 3.6 V AVDD - single-supply operation compatible with modern low-voltage system rails. |
Pinout & Package
The AD9238BCPZ-65 is packaged in a Pb-free, 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad requiring connection to AGND. Pin count and layout match the 64-lead LQFP variant but offer lower thermal resistance (θJA = 26.4°C/W with heat slug soldered).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+_A / VIN−_A VIN+_B / VIN−_B | Differential analog inputs for Channel A and B | Accept 1 Vp-p to 2 Vp-p differential signals; high 500 MHz bandwidth enables wideband sampling. |
| CLK_A / CLK_B | Independent clock inputs per channel | Enable asynchronous or synchronized dual-channel sampling; duty cycle stabilizer (DCS) corrects timing skew. |
| D0_A–D11_A / D0_B–D11_B | 12-bit parallel digital outputs per channel | Configurable as offset binary or twos complement; OEB_A/OEB_B control high-Z state for bus sharing. |
| PWDN_A / PWDN_B | Channel power-down control | Logic 1 disables respective ADC channel, reducing power to standby (2 mW total); outputs hold last value, not high-Z. |
| SHARED_REF / MUX_SELECT / DFS | Mode configuration bits | SHARED_REF selects common vs. independent reference; MUX_SELECT enables single-port data multiplexing; DFS sets data format. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 12-bit pipelined ADC cores | Guarantees no missing codes and 11.4+ ENOB across full temperature range 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 clock duty cycle variation outside 40–60%, preserving AC performance without external clock conditioning. |
| Flexible analog input interface | Supports differential or single-ended inputs via external resistor networks; 7 pF input capacitance simplifies anti-alias filter design. |
| Channel isolation & matching | Typical crosstalk <−85 dB and gain/offset mismatch <±0.05%/±0.1% FS - critical for I/Q demodulation and phased array systems. |
Applications
| Ultrasound Beamforming | IF Sampling Receiver |
|---|---|
Use Scenario: Simultaneous digitization of 64–128 transducer channel echoes in portable ultrasound systems. IC Role / Device Role / Timing Role: Dual-channel ADC captures time-aligned I/Q baseband signals from analog beamformer outputs. Use Value: 85 dB crosstalk suppression prevents channel bleed-through; 70 dB SNR preserves tissue contrast resolution at 12-bit depth. | Use Scenario: Direct digitization of 70–100 MHz IF signals in CDMA2000/WiMAX baseband receivers. IC Role / Device Role / Timing Role: High-bandwidth ADC samples IF stage output prior to digital downconversion and channel filtering. Use Value: 500 MHz analog input bandwidth enables alias-free sampling without image-reject filtering; 80.5 dBc SFDR suppresses adjacent channel interference. |
| Battery-Powered Scopemeter | Digital Oscilloscope Front-End |
Use Scenario: Handheld 100 MHz bandwidth scopemeter acquiring transient waveforms with 12-bit vertical resolution. IC Role / Device Role / Timing Role: Dual ADC digitizes two independent channels (e.g., CH1/CH2) at 65 MSPS with synchronized clocks. Use Value: 600 mW total power enables >4 hours runtime on Li-ion battery; low 0.5 ps rms aperture jitter ensures <0.1% timebase error. | Use Scenario: Low-cost benchtop oscilloscope requiring dual 100 MS/s channels with ≥12-bit effective resolution. IC Role / Device Role / Timing Role: ADC provides parallel 12-bit digitization path for each analog channel, feeding FPGA-based waveform processing. Use Value: Pin-compatible upgrade path from AD9248 allows reuse of existing PCB layout while improving power efficiency by 25% at 65 MSPS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9248BCPZ-65 | 14-bit resolution, same 65 MSPS rate, identical 64-lead LFCSP package and pinout. | Higher resolution suits dynamic range-critical applications (e.g., spectrum analyzers); higher power (750 mW) and cost. | Select AD9248BCPZ-65 when ENOB > 12 bits is required and power budget allows +150 mW. |
| ADS5272IPFP | Texas Instruments 12-bit, 65 MSPS dual ADC in 64-pin HTQFP; no integrated reference; requires external REF. | Lacks on-chip reference and DCS; lower crosstalk (−75 dB typical); higher supply sensitivity. | Choose ADS5272IPFP only if board space permits external reference circuitry and system-level clock conditioning is already present. |
Compared with AD9238BCPZ-65, AD9248BCPZ-65 delivers +2 bits resolution at higher power and cost, while ADS5272IPFP reduces integration level-requiring external reference and clock cleanup-but offers alternate sourcing and qualification paths for TI-based designs.
Availability
AD9238BCPZ-65 is available at Aetrix Electronics and suitable for ultrasound equipment, IF sampling receivers, and battery-powered test instruments requiring stable component supply, long-term obsolescence management, and traceable lot-level documentation.
Supply support for AD9238BCPZ-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 AD9238 product line delivers dual-channel, high-speed ADCs optimized for medical imaging, wireless infrastructure, and portable instrumentation where low power, small footprint, and guaranteed performance across temperature are essential.
FAQ
What is the maximum analog input frequency supported by the AD9238BCPZ-65?
The AD9238BCPZ-65 has a 500 MHz (3 dB) analog input bandwidth, enabling digitization of signals up to ~100 MHz with usable SNR. At 65 MSPS, its Nyquist frequency is 32.5 MHz; operation beyond this relies on undersampling techniques and requires careful anti-alias filter design. Measured SNR remains ≥67.6 dB at 100 MHz input.
Does the AD9238BCPZ-65 require an external voltage reference?
No, the AD9238BCPZ-65 includes an integrated 1.0 V (or 0.5 V) voltage reference with ±35 mV output error over temperature. External reference is optional and only used when higher precision or different reference voltage is needed; SENSE and VREF pins configure internal/external reference mode.
How does the clock duty cycle stabilizer (DCS) function in the AD9238BCPZ-65?
The DCS circuit in the AD9238BCPZ-65 actively corrects clock duty cycle deviations, maintaining ADC performance even with input clocks ranging from 30% to 70% duty cycle. When enabled (DCS pin tied high), it reduces sensitivity to clock generator imperfections, eliminating need for external duty cycle correction circuits in the AD9238BCPZ-65 signal chain.
Can both channels of the AD9238BCPZ-65 operate independently?
Yes, the AD9238BCPZ-65 supports fully independent operation: CLK_A and CLK_B may be driven asynchronously, PWDN_A/PWDN_B allow per-channel power-down, and OEB_A/OEB_B control individual data bus enable. Channel isolation exceeds 85 dB, ensuring minimal coupling during mixed-signal acquisition scenarios.
What package type is used for the AD9238BCPZ-65 and what are its thermal characteristics?
The AD9238BCPZ-65 uses a 64-lead LFCSP with exposed thermal pad that must be soldered to AGND. Its thermal resistance is θJA = 26.4°C/W (with heat slug connected to ground plane on a 4-layer board), significantly lower than the LQFP variant (54°C/W), enabling reliable 600 mW operation in compact, convection-cooled layouts.
AD9238BCPZ-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:
- 12
- 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:
- 2
- 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:
- -
AD9238BCPZ-65 FAQ
1.How can I place an order for AD9238BCPZ-65 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9238BCPZ-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 AD9238BCPZ-65 reliable?
The price and inventory of AD9238BCPZ-65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9238BCPZ-65 is usually 5 days.
3.What payment methods are accepted for AD9238BCPZ-65?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9238BCPZ-65 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9238BCPZ-65?
AD9238BCPZ-65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9238BCPZ-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 AD9238BCPZ-65?
For technical support, including AD9238BCPZ-65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9238BCPZ-65 requirements.
6.How does Aetrix verify that AD9238BCPZ-65 is sourced from the original manufacturer or authorized distributors?
All AD9238BCPZ-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 AD9238BCPZ-65 meets industry standards.
7.What is the process for return or replacement of AD9238BCPZ-65?
All AD9238BCPZ-65 units undergo pre-shipment inspection (PSI). If there is an issue with AD9238BCPZ-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 AD9238BCPZ-65 part is unused and in its original packaging.
Return procedure for AD9238BCPZ-65:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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