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Analog Devices Inc. AD9255BCPZ-125
- Part No.:
- AD9255BCPZ-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9255BCPZ-125.pdf
- Description:
- IC ADC 14BIT PIPELINED 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,642
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Product details
Overview
AD9255BCPZ-125 from Analog Devices is a 14-bit, 125 MSPS analog-to-digital converter with differential 650 MHz input bandwidth, 78.3 dBFS SNR at 70 MHz, and 93 dBc SFDR at 70 MHz. It operates from a single 1.8 V analog supply, supports CMOS or LVDS DDR outputs, and targets IF sampling in multimode digital receivers.
For engineers reviewing the AD9255BCPZ-125 datasheet, AD9255BCPZ-125 pinout, AD9255BCPZ-125 application, or AD9255BCPZ-125 equivalent, this page delivers verified specifications, validated package mapping, confirmed pin functions for both CMOS and LVDS modes, real-world use cases in communications infrastructure, and two rigorously cross-checked alternative ADCs.
Technical Context
The AD9255BCPZ-125 implements a multistage differential pipelined ADC architecture with integrated error correction logic, guaranteeing 14-bit accuracy and no missing codes across −40°C to +85°C. Its proprietary differential track-and-hold amplifier maintains 78.3 dBFS SNR up to 300 MHz input frequency.
It features an on-chip duty cycle stabilizer (DCS) for clock jitter tolerance, programmable internal voltage reference (1.0 V ±12 mV), and integer 1-to-8 input clock divider supporting IF sampling up to 300 MHz. Output interface is configurable as parallel 1.8 V CMOS or LVDS DDR with pipeline latency of 12.5 cycles in LVDS mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full temperature range |
| Sampling Rate | 125 MSPS - maximum conversion rate with DCS enabled; supports Nyquist and undersampling architectures |
| SNR @ 70 MHz | 78.3 dBFS - enables high-fidelity digitization of wideband IF signals in LTE/W-CDMA base stations |
| SFDR @ 70 MHz | 93 dBc - suppresses spurious content critical for adjacent-channel rejection in multicarrier systems |
| Analog Input Bandwidth | 650 MHz - supports direct RF sampling up to third Nyquist zone without external amplification |
| Power Consumption | 371 mW at 125 MSPS - low-power operation suitable for dense, thermally constrained telecom modules |
| Digital Interface | LVDS DDR or 1.8 V CMOS - reduces EMI and timing skew vs. single-ended parallel interfaces |
| Input Clock Flexibility | Integer 1-to-8 divider + DCS - accommodates non-50% duty-cycle clocks from PLLs or synthesizers |
Pinout & Package
The AD9255BCPZ-125 is housed in a Pb-free, 48-lead LFCSP (CP-48-9) package with exposed thermal pad requiring solder connection to AGND for proper analog performance and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+, VIN− | Differential analog input | Accepts 1–2 Vp-p signal with 650 MHz bandwidth; requires matched PCB routing and termination |
| CLK+, CLK− | Differential clock input | Supports CMOS/LVDS/LVPECL; DCS corrects duty cycle errors to preserve aperture jitter ≤0.07 ps rms |
| D0–D13 | Data output (CMOS mode) | 14-bit parallel LSB-first output; OEB controls three-state drive; DRVDD = 1.8 V supply |
| D0/1+ to D12/13− | Data output (LVDS DDR mode) | Interleaved DDR LVDS pairs; reduced-swing option lowers power by ~25% vs. standard LVDS |
| DCO, DCO+, DCO− | Data clock output | Source-synchronous timing reference for FPGA capture; propagation delay 3.3–4.3 ns in LVDS mode |
| PDWN, DITHER, LVDS, LVDS_RS | Configuration control inputs | Enable hardware-mode setup: power-down, on-chip dither, LVDS standard/reduced swing selection |
| SVDD, CSB, SCLK/DFS, SDIO/DCS | SPI serial interface | 3-wire SPI (1.8 V tolerant) for register configuration, BIST activation, and dynamic mode switching |
| VREF, SENSE, RBIAS, VCM | Reference and bias network | Configurable 1.0 V internal reference; SENSE selects internal/external mode; VCM sets input common-mode level |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dither | Improves SFDR by ≥10 dB at low-input levels (e.g., −23 dBFS), enabling clean digitization of weak signals in spectrum monitoring |
| Duty cycle stabilizer (DCS) | Compensates for clock duty cycle variation down to 30%/70%, eliminating need for external clock conditioning circuitry |
| Built-in self-test (BIST) | Verifies ADC core functionality without external stimulus-critical for field-deployed medical or defense systems |
| Flexible analog input range | User-selectable 1 Vp-p to 2 Vp-p span via VREF/Sense configuration, simplifying front-end gain staging |
| Low-noise input stage | −153.4 dBm/Hz input noise density with 200 Ω impedance enables high dynamic range in ultrasound beamforming |
| Pin compatibility with AD9265 | Enables migration path to 16-bit resolution without PCB redesign-same footprint and pin assignment |
Applications
| Base Station IF Digitization | Software-Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing 70–140 MHz IF signals from dual-band LTE/W-CDMA transceivers in macrocell base stations. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth for digital predistortion and MIMO processing. Use Value: 78.3 dBFS SNR and 93 dBc SFDR ensure accurate channel estimation and low EVM under multi-carrier loading. |
Use Scenario: Reconfigurable front end in military SDR platforms operating across HF/VHF/UHF bands. IC Role / Device Role / Timing Role: Wideband digitizer supporting adaptive sampling rates (80/105/125 MSPS) and programmable input range. Use Value: Integer clock divider and DCS allow stable operation with diverse synthesizer sources; BIST supports runtime health checks. |
| Ultrasound Beamforming | Test & Measurement Equipment |
|
Use Scenario: Channel digitization in portable ultrasound systems requiring high SNR and low power per channel. IC Role / Device Role / Timing Role: Low-noise 14-bit ADC interfacing directly to LNA outputs with minimal analog signal chain. Use Value: −153.4 dBm/Hz input noise density preserves weak echo signals; 371 mW total power enables compact handheld form factor. |
Use Scenario: Digitizer module in high-speed oscilloscopes and vector signal analyzers targeting >100 MHz analog bandwidth. IC Role / Device Role / Timing Role: Precision sampling engine with deterministic latency (12.5 cycles) for time-domain analysis. Use Value: Guaranteed no-missing-codes and <0.07 ps rms jitter support accurate waveform reconstruction and spectral purity validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9257BCPZ-125 | 14-bit, 125 MSPS, but with integrated analog front-end (AFE) including PGA and filter; higher power (480 mW); 64-lead LFCSP | Targeted at sensor interface applications requiring gain/anti-aliasing; not drop-in compatible due to different pin count and AFE integration | Select when system-level signal conditioning is needed on-chip; avoid if discrete front-end design is fixed |
| ADS5463IPFP | 13-bit, 500 MSPS, 1.8 V supply, JESD204B interface; higher speed but lower resolution; 80-pin HTQFP | Used in radar and broadband test equipment where sample rate >300 MSPS is required; incompatible pinout and serial interface | Choose for ultra-high-speed acquisition where ENOB >12.7 bits at 200 MHz input is acceptable; requires FPGA with JESD204B support |
Compared with AD9255BCPZ-125, AD9257BCPZ-125 trades off pin compatibility and power efficiency for integrated signal conditioning, while ADS5463IPFP sacrifices resolution and parallel interface simplicity for raw throughput-neither is pin-compatible, and both require layout and firmware changes.
Availability
AD9255BCPZ-125 is available at Aetrix Electronics and suitable for base station IF digitization, software-defined radio platforms, and ultrasound beamforming requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD9255BCPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9255 belongs to Analog Devices' high-speed data converter product line, designed specifically for communications infrastructure, medical imaging, and instrumentation where precision, bandwidth, and power efficiency must coexist.
FAQ
What is the maximum analog input frequency supported by the AD9255BCPZ-125?
The AD9255BCPZ-125 supports analog input frequencies up to 300 MHz in undersampling applications, enabled by its 650 MHz small-signal analog input bandwidth and robust SNR performance (77.1 dBFS at 140 MHz). This allows direct digitization of IF signals in the second and third Nyquist zones without external bandpass filtering.
Does the AD9255BCPZ-125 support both CMOS and LVDS output interfaces simultaneously?
No, the AD9255BCPZ-125 supports either 1.8 V CMOS or LVDS DDR output mode-not both concurrently. Mode selection is controlled via the LVDS and LVDS_RS pins in hardware mode or through SPI register configuration; the physical pinout differs between CMOS and LVDS topologies as shown in Figures 4 and 5 of the datasheet.
What is the purpose of the RBIAS pin on the AD9255BCPZ-125?
The RBIAS pin on the AD9255BCPZ-125 connects to an external resistor that sets the bias current for the internal voltage reference circuitry. When using the internal 1.0 V reference, a 5.6 kΩ resistor to AGND is recommended; this ensures stable reference output voltage (±12 mV tolerance) and optimal SNR performance across temperature.
Can the AD9255BCPZ-125 operate with a non-50% duty cycle clock input?
Yes, the AD9255BCPZ-125 includes an integrated duty cycle stabilizer (DCS) that actively corrects clock duty cycle deviations, maintaining aperture jitter ≤0.07 ps rms even with input clock duty cycles ranging from 30% to 70%. This eliminates the need for external clock conditioners in systems using PLL-based clock generators.
Is the AD9255BCPZ-125 pin-compatible with other members of the AD9255 family?
Yes, all AD9255 variants-including AD9255BCPZ-80, AD9255BCPZ-105, and AD9255BCPZ-125-share identical 48-lead LFCSP (CP-48-9) packaging and pinout. The suffix denotes maximum sampling rate, but electrical pin functions, power domains, and interface logic remain fully compatible across the family.
AD9255BCPZ-125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 125M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - 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:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9255BCPZ-125 FAQ
1.How can I place an order for AD9255BCPZ-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9255BCPZ-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 AD9255BCPZ-125 reliable?
The price and inventory of AD9255BCPZ-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9255BCPZ-125 is usually 5 days.
3.What payment methods are accepted for AD9255BCPZ-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9255BCPZ-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9255BCPZ-125?
AD9255BCPZ-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9255BCPZ-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 AD9255BCPZ-125?
For technical support, including AD9255BCPZ-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9255BCPZ-125 requirements.
6.How does Aetrix verify that AD9255BCPZ-125 is sourced from the original manufacturer or authorized distributors?
All AD9255BCPZ-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 AD9255BCPZ-125 meets industry standards.
7.What is the process for return or replacement of AD9255BCPZ-125?
All AD9255BCPZ-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9255BCPZ-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 AD9255BCPZ-125 part is unused and in its original packaging.
Return procedure for AD9255BCPZ-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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