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Analog Devices Inc. AD9656BCPZ-125
- Part No.:
- AD9656BCPZ-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 56-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD9656BCPZ-125.pdf
- Description:
- IC ADC 16BIT PIPELINED 56LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,184
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Product details
Overview
AD9656BCPZ-125 from Analog Devices is a quad-channel, 16-bit, 125 MSPS analog-to-digital converter with JESD204B Subclass 1 serial interface, 1.8 V single-supply operation, 650 MHz full-power analog input bandwidth, and on-chip voltage reference. It delivers 79.9 dBFS SNR at 16 MHz and supports medical ultrasound and quadrature radio receiver systems.
For engineers reviewing the AD9656BCPZ-125 datasheet, AD9656BCPZ-125 pinout, AD9656BCPZ-125 application, or AD9656BCPZ-125 equivalent, this page provides verified technical context, JESD204B lane configuration options (1/2/4 lanes), multichip sync capability, deterministic latency values per mode (23–44 cycles), and real-world power consumption data (788 mW total at 125 MSPS with sine-wave input).
Technical Context
The AD9656BCPZ-125 integrates four independent pipeline ADC cores sharing a common clock management block with an on-chip PLL that multiplies the input sampling clock to generate the JESD204B link rate. Each channel features individual power-down control and programmable digital gain.
Its JESD204B transmitter supports M=4 (four converters), L=1/2/4 lane configurations, and deterministic latency alignment via SYSREF± and SYNCINB± inputs. The CML serial outputs operate up to 8.0 Gbps per lane with 135 fs rms aperture jitter and 400–750 mV differential output swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Rate | 16-bit, 125 MSPS per channel - enables high-fidelity digitization of wideband RF and ultrasound signals without undersampling. |
| SNR / SFDR | 79.9 dBFS @ 16 MHz / 86 dBc to Nyquist - supports demanding dynamic range requirements in diversity receivers and MRI front ends. |
| Analog BW | 650 MHz full-power bandwidth - accepts IF sampling up to 301 MHz with usable ENOB ≥11.1 bits. |
| JESD204B | Subclass 1, up to 4 lanes at 8.0 Gbps/lane - ensures deterministic latency and multidevice synchronization for phased-array systems. |
| Power | 788 mW total (sine input, 125 MSPS, 2-lane mode) - achieves <200 mW/channel efficiency while maintaining 16-bit linearity (±4.5 LSB INL). |
| Supply | Single 1.8 V AVDD/DVDD/DRVDD - simplifies power delivery and eliminates need for external voltage references or driver components in many applications. |
| Input Range | 2.0–2.8 V p-p differential - configurable full-scale range accommodates varying signal chain gain settings without external attenuation or amplification. |
Pinout & Package
The AD9656BCPZ-125 is housed in a RoHS-compliant, nonmagnetic 56-lead LFCSP (8 mm × 8 mm) with exposed thermal pad soldered to PCB ground for analog reference integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINA+/VINA− VINB+/VINB− VINC+/VINC− VIND+/VIND− | Differential analog inputs (4 channels) | Accept 2.0–2.8 V p-p full-scale signals; 650 MHz bandwidth enables direct IF sampling in SDR and radar. |
| CLK+/CLK− | Differential sampling clock input | LVPECL/LVDS/CMOS-compatible; supports 40–1000 MHz input; drives internal PLL for JESD204B link clock generation. |
| SERDOUT0± to SERDOUT3± | JESD204B CML serial outputs | Four differential pairs supporting 1/2/4-lane configurations; 400–750 mV swing, 100 Ω differential termination required. |
| SYSREF+/SYSREF− SYNCINB+/SYNCINB− | Multi-device synchronization inputs | Enable deterministic latency alignment across multiple AD9656BCPZ-125 devices in time-coherent arrays (e.g., beamforming). |
| PDWN, CSB, SCLK, SDIO | SPI control interface | Configures JESD204B parameters, power modes, test patterns, and clock dividers; supports register read/write at ≤25 MHz. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip PLL with clock multiplier | Eliminates need for external high-frequency clock sources; generates precise JESD204B link clocks from lower-frequency sampling clocks. |
| Programmable JESD204B lane count | Supports 1, 2, or 4 serial lanes - allows trade-off between FPGA I/O resource usage and data throughput in system-level design. |
| Deterministic latency control | Fixed latency of 23/29/44 ADC conversion cycles (M4,L1/L2/L4) - enables precise timing alignment in synchronized multi-ADC architectures. |
| Built-in digital test pattern generation | Includes deterministic, pseudo-random, and custom SPI-loaded patterns - accelerates board-level validation without external signal generators. |
| Individual channel power-down | Reduces total power to 14 mW when all channels disabled - extends battery life in portable test equipment during idle periods. |
Applications
| Medical Ultrasound Imaging | Quadrature Radio Receivers |
|---|---|
Use Scenario: Beamformed echo signal digitization in portable ultrasound systems requiring compact, low-power, high-SNR acquisition. IC Role / Device Role / Timing Role: Quad ADC captures I/Q baseband signals from four receive channels simultaneously with matched gain/phase response. Use Value: 79.9 dBFS SNR at 16 MHz and ±4.5 LSB INL ensure accurate tissue differentiation; 1.8 V supply reduces thermal load in handheld enclosures. | Use Scenario: Direct sampling of complex IF signals in software-defined radios operating up to 301 MHz. IC Role / Device Role / Timing Role: Digitizes quadrature-mixed RF signals with deterministic latency for coherent demodulation and digital beam steering. Use Value: 650 MHz analog bandwidth and JESD204B Subclass 1 enable phase-aligned multi-antenna processing without FPGA-based deskew logic. |
| High-Speed Industrial Imaging | Portable Test Equipment |
Use Scenario: Line-scan camera digitization in automated optical inspection systems requiring >100 MSPS sustained throughput. IC Role / Device Role / Timing Role: Four parallel ADC channels acquire synchronized pixel streams from CMOS/CCD sensors with minimal inter-channel skew. Use Value: 125 MSPS rate and 2.8 V p-p input range accommodate high-gain sensor interfaces; low 135 fs aperture jitter preserves spatial resolution. | Use Scenario: Handheld spectrum analyzers and signal analyzers needing battery-efficient, high-dynamic-range digitization. IC Role / Device Role / Timing Role: Core ADC engine providing calibrated 16-bit samples to FPGA-based FFT engines and display processors. Use Value: 788 mW total power at full rate and standby mode (547 mW) extend field operation time; SPI-configurable test patterns simplify calibration workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 16-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9655BCPZ-125 | 16-bit, 125 MSPS, dual-channel (not quad); identical JESD204B interface and power specs. | Suitable where only two simultaneous channels are needed; occupies same PCB footprint but halves channel count. | Select when system requires fewer channels and board space is constrained - no change to FPGA JESD204B IP but reduced data throughput. |
| ADS54J60IRGCT | Texas Instruments 16-bit, 500 MSPS quad ADC; higher rate but 3.3 V analog supply and no integrated reference. | Used in wideband communications where >125 MSPS is mandatory; requires external reference and level-shifting for 1.8 V FPGA I/O. | Choose for ultra-wideband IF sampling beyond 650 MHz; accept added BOM cost and layout complexity for 4× speed increase. |
Compared with AD9655BCPZ-125, the AD9656BCPZ-125 doubles channel count in the same package for spatially dense systems; versus ADS54J60IRGCT, it trades raw speed for lower power, integrated reference, and simpler power architecture - ideal for portable and thermally constrained designs.
Availability
AD9656BCPZ-125 is available at Aetrix Electronics and suitable for medical ultrasound imaging, quadrature radio receivers, high-speed industrial imaging, and portable test equipment requiring stable component supply across extended production lifecycles.
Supply support for AD9656BCPZ-125 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.
The AD9656BCPZ-125 belongs to Analog Devices' high-speed data converter product line, engineered for demanding RF, instrumentation, and medical applications where precision, low power, and JESD204B interoperability are critical.
FAQ
What is the maximum analog input frequency supported by the AD9656BCPZ-125 while maintaining usable ENOB?
The AD9656BCPZ-125 maintains ≥11.1 effective number of bits (ENOB) up to 301 MHz input frequency under 125 MSPS sampling with VREF = 1.4 V. This is enabled by its 650 MHz full-power analog input bandwidth and low 135 fs rms aperture jitter, making the AD9656BCPZ-125 suitable for direct IF sampling in communications and radar systems without external anti-alias filtering.
Does the AD9656BCPZ-125 require an external voltage reference?
No, the AD9656BCPZ-125 includes an internal voltage reference with 1.4 V (±2%) output and 4 mV load regulation at 1.0 mA. External reference is optional and only needed if tighter initial accuracy or temperature drift performance is required beyond the on-chip reference's ±0.14% offset error and 12.3 ppm/°C gain drift.
How does the JESD204B subclass selection affect system synchronization in the AD9656BCPZ-125?
The AD9656BCPZ-125 implements JESD204B Subclass 1, which guarantees deterministic latency through SYSREF±-aligned initialization. When SYSREF pulses align with the local clock edge, the AD9656BCPZ-125 resets its internal state machine to establish repeatable, cycle-accurate sample-to-data-output delay - essential for multichip time-aligned acquisition in beamforming and phased-array systems.
Can the AD9656BCPZ-125 operate with only two JESD204B lanes instead of four?
Yes, the AD9656BCPZ-125 supports configurable JESD204B lane counts: 1, 2, or 4 lanes. In 2-lane mode at 125 MSPS, each lane carries 4.0 Gbps (M=4, F=4, K=32), reducing FPGA I/O utilization while maintaining full data throughput. Lane count is set via SPI register 0x5E and requires corresponding FPGA link configuration.
What is the power consumption of the AD9656BCPZ-125 in full operation versus power-down mode?
In full operation with sine-wave input at 125 MSPS and two JESD204B lanes, the AD9656BCPZ-125 consumes 788 mW total. In full power-down mode (all channels disabled), it draws just 14 mW. Standby mode consumes 547 mW and retains register settings while halting conversions - enabling rapid wake-up (<250 ns) for burst-mode acquisition in portable test equipment.
AD9656BCPZ-125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 56-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 125M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- JESD204B
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- 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:
- 56-LFCSP-WQ (8x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9656BCPZ-125 FAQ
1.How can I place an order for AD9656BCPZ-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9656BCPZ-125 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 AD9656BCPZ-125 reliable?
The price and inventory of AD9656BCPZ-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9656BCPZ-125 is usually 5 days.
3.What payment methods are accepted for AD9656BCPZ-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9656BCPZ-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9656BCPZ-125?
AD9656BCPZ-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9656BCPZ-125 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 AD9656BCPZ-125?
For technical support, including AD9656BCPZ-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9656BCPZ-125 requirements.
6.How does Aetrix verify that AD9656BCPZ-125 is sourced from the original manufacturer or authorized distributors?
All AD9656BCPZ-125 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 AD9656BCPZ-125 meets industry standards.
7.What is the process for return or replacement of AD9656BCPZ-125?
All AD9656BCPZ-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9656BCPZ-125, 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 AD9656BCPZ-125 part is unused and in its original packaging.
Return procedure for AD9656BCPZ-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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