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Analog Devices Inc. AD9255BCPZRL7-125
- Part No.:
- AD9255BCPZRL7-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9255BCPZRL7-125.pdf
- Description:
- IC ADC 14BIT PIPELINED 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
AD9255BCPZRL7-125 from Analog Devices is a 14-bit, 125 MSPS analog-to-digital converter with differential 650 MHz input bandwidth, 1.8 V analog supply, and selectable CMOS or LVDS DDR outputs. It delivers 78.3 dBFS SNR and 93 dBc SFDR at 70 MHz input, supporting IF sampling up to 300 MHz in wireless infrastructure receivers.
For engineers reviewing the AD9255BCPZRL7-125 datasheet, AD9255BCPZRL7-125 pinout, AD9255BCPZRL7-125 application, or AD9255BCPZRL7-125 equivalent, key selection factors include its 125 MSPS real-time sampling rate, on-chip dither for SFDR enhancement, integer 1-to-8 clock divider, integrated voltage reference, and industrial −40°C to +85°C operation in a 48-lead LFCSP package.
Technical Context
The AD9255BCPZRL7-125 implements a multistage differential pipelined ADC architecture with integrated error correction logic, guaranteeing 14-bit accuracy and no missing codes across temperature. Its analog front-end features a track-and-hold amplifier with user-configurable 1 Vp-p to 2 Vp-p input range and 200 Ω input impedance yielding −153.4 dBm/Hz noise density at 70 MHz.
Digital interface flexibility includes SPI-configurable output formatting (offset binary, two's complement, gray), programmable duty cycle stabilizer (DCS), and dual-mode output drivers supporting 1.8 V CMOS or LVDS DDR signaling. Power management includes three states: active (371 mW at 125 MSPS), standby (54 mW), and power-down (0.15 mW).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full industrial temperature range. |
| Max Sampling Rate | 125 MSPS - supports Nyquist-zone sampling of IF signals up to 62.5 MHz or undersampling of RF carriers up to 300 MHz. |
| SNR @ 70 MHz | 78.3 dBFS - enables high-fidelity digitization of wideband communication signals with low quantization noise floor. |
| SFDR @ 70 MHz | 93 dBc - suppresses spurious harmonics critical for multi-carrier LTE/W-CDMA base station receivers. |
| Analog Input Bandwidth | 650 MHz - preserves signal integrity for high-frequency differential inputs without external amplification. |
| Power Consumption | 371 mW at 125 MSPS - optimized for thermal-constrained small-cell and portable medical ultrasound systems. |
| Supply Voltages | AVDD = 1.8 V, DRVDD = 1.8 V, SVDD = 1.8 V - single-supply analog core simplifies PCB power delivery and reduces BOM count. |
Pinout & Package
AD9255BCPZRL7-125 is housed in a Pb-free, 48-lead 7 mm × 7 mm LFCSP (CP-48-9) with exposed thermal pad requiring solder connection to AGND for proper analog grounding and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+, VIN− | Differential analog input | Accepts 1–2 Vp-p balanced signal; 650 MHz bandwidth enables direct IF sampling without external transformer or balun. |
| CLK+, CLK− | Differential clock input | Supports CMOS/LVDS/LVPECL; internal DCS corrects duty cycle errors to maintain aperture jitter ≤0.07 ps rms. |
| D0–D13 | Parallel data outputs | 14-bit DDR outputs configurable as 1.8 V CMOS or LVDS; pipeline latency fixed at 12.5 cycles in LVDS mode. |
| DCO | Data clock output | Source-synchronous clock aligned to data edges; propagation delay 3.3–4.3 ns in LVDS mode for reliable capture timing. |
| PDWN, OEB, DITHER | Control inputs | Hardware-configurable power-down, output enable, and dither activation-enables rapid system-level power state transitions. |
| SVDD, AVDD, DRVDD | Independent supplies | Isolated 1.8 V domains prevent digital switching noise from degrading analog SNR or reference stability. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dither | Improves SFDR by ≥10 dB at low-input-power conditions (e.g., −23 dBFS), enabling clean reception of weak adjacent-channel signals. |
| Integer 1-to-8 clock divider | Allows use of lower-frequency, lower-jitter master clocks (e.g., 250 MHz ÷ 2 = 125 MSPS), reducing clock generation complexity and EMI. |
| Programmable internal reference | 1.0 V nominal output with ±12 mV error; eliminates need for external precision reference and associated layout sensitivity. |
| Built-in self-test (BIST) | Verifies ADC functionality without external stimulus-reduces test time and calibration overhead in production and field diagnostics. |
| Pin compatibility with AD9265 | Enables hardware reuse when upgrading from 14-bit to 16-bit resolution; same footprint and pin mapping simplify board redesign. |
Applications
| Wireless Base Station Receiver | Ultrasound Beamforming |
|---|---|
|
Use Scenario: Digitizing 70–140 MHz IF signals from multi-antenna GSM/LTE front-ends with simultaneous carrier aggregation. IC Role / Device Role / Timing Role: Primary ADC capturing wide instantaneous bandwidth while maintaining SFDR >90 dBc to resolve closely spaced interferers. Use Value: 93 dBc SFDR at 70 MHz and 650 MHz analog bandwidth eliminate need for external anti-alias filtering, shrinking RF module size. |
Use Scenario: High-channel-count portable ultrasound systems requiring low-power, high-SNR digitization of 5–15 MHz echo return signals. IC Role / Device Role / Timing Role: Channel ADC in time-domain beamformer, synchronized across 64+ channels via shared CLK+/CLK− and SYNC. Use Value: 78.3 dBFS SNR and −153.4 dBm/Hz input noise maximize dynamic range for detecting low-amplitude tissue reflections. |
| Software-Defined Radio (SDR) | Test & Measurement Equipment |
|
Use Scenario: Reconfigurable wideband receiver in military SDR platforms operating across 10 MHz–300 MHz with adaptive modulation schemes. IC Role / Device Role / Timing Role: Flexible ADC supporting variable sample rates (80/105/125 MSPS) and programmable input range for multi-standard compliance. Use Value: Integer clock divider and SPI-configurable output format allow runtime adaptation to different waveform bandwidths and host processor interfaces. |
Use Scenario: Digitizing high-fidelity signals in portable spectrum analyzers and vector signal analyzers requiring low distortion and calibrated amplitude response. IC Role / Device Role / Timing Role: Precision acquisition engine with guaranteed 14-bit linearity (±1.2 LSB INL) and stable reference for traceable measurements. Use Value: No missing codes and ±0.25% FSR gain error support <1% amplitude uncertainty over temperature without per-unit calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9265BCPZ-125 | 16-bit resolution, identical 125 MSPS rate and LFCSP-48 package; higher power (540 mW) and larger INL (±2.5 LSB). | Used where ENOB >12.7 bits required for ultra-high-fidelity measurement; not drop-in due to increased thermal load and layout derating needs. | Select AD9265BCPZ-125 only when 16-bit resolution is mandatory and system cooling budget allows +170 mW dissipation. |
| ADS54J60IRGCT | 16-bit, 500 MSPS, JESD204B serial output; no parallel CMOS/LVDS; requires FPGA with JESD204B PHY and higher PCB layer count. | Targeted at high-throughput backhaul and radar systems needing >2 Gbps aggregate throughput; lacks on-chip dither and BIST. | Choose ADS54J60IRGCT for new designs prioritizing serial interface density and scalability over hardware simplicity and diagnostic capability. |
Compared with AD9255BCPZRL7-125, AD9265BCPZ-125 trades power efficiency and ease of integration for resolution, while ADS54J60IRGCT replaces parallel I/O complexity with serial protocol overhead-neither offers pin compatibility or identical feature set.
Availability
AD9255BCPZRL7-125 is available at Aetrix Electronics and suitable for wireless infrastructure, medical ultrasound, software-defined radio, and test equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AD9255BCPZRL7-125 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 DSP technologies, serving communications, industrial, and healthcare markets with precision signal processing solutions.
The AD9255BCPZRL7-125 belongs to Analog Devices' high-speed ADC product line, designed specifically for cost-sensitive, space-constrained communications receivers requiring best-in-class SNR/SFDR trade-offs at 125 MSPS.
FAQ
What is the maximum analog input frequency supported by the AD9255BCPZRL7-125?
The AD9255BCPZRL7-125 supports analog input frequencies up to 300 MHz using IF sampling techniques. Its 650 MHz differential input bandwidth ensures minimal amplitude and phase degradation across this range, enabling direct digitization of cellular, WiMAX, and TD-SCDMA intermediate frequencies without external filtering or amplification. This capability is validated in the datasheet's AC specifications table under "Analog Input Bandwidth" and confirmed by typical performance plots up to 200 MHz.
Does the AD9255BCPZRL7-125 require an external voltage reference?
No, the AD9255BCPZRL7-125 integrates a programmable internal voltage reference with 1.0 V nominal output and ±12 mV accuracy over temperature. The SENSE pin selects between internal and external reference modes, and VREF serves as both input and output. External reference is optional and only needed when tighter than ±12 mV tolerance or custom reference voltage is required-most designs operate reliably using the internal reference alone.
How does the duty cycle stabilizer (DCS) function in the AD9255BCPZRL7-125?
The AD9255BCPZRL7-125's duty cycle stabilizer (DCS) actively corrects input clock duty cycle variations to maintain <0.07 ps rms aperture jitter, even with asymmetric CLK+/CLK− waveforms. Enabled by default, DCS operates independently of the integer clock divider and is controlled via SPI Register 0x11 or the DCS pin in external mode. Its presence ensures consistent SNR/SFDR performance across diverse clock source types including crystal oscillators, PLLs, and FPGA-generated clocks.
Can the AD9255BCPZRL7-125 operate in both CMOS and LVDS output modes simultaneously?
No, the AD9255BCPZRL7-125 supports either CMOS or LVDS DDR output mode-not both concurrently. Mode selection is configured via the LVDS and LVDS_RS pins (hardware control) or SPI registers (software control). In CMOS mode, D0–D13 drive 1.8 V logic levels with 12-cycle latency; in LVDS mode, outputs are interleaved (e.g., D0/1+, D0/1−) with 12.5-cycle latency and ANSI or reduced-swing compliance. Mixing modes would violate electrical specifications and cause undefined behavior.
What is the purpose of the SYNC pin on the AD9255BCPZRL7-125?
The SYNC pin on the AD9255BCPZRL7-125 provides deterministic multi-device synchronization in time-aligned sampling systems. When asserted, it resets the internal pipeline and aligns the sampling phase across multiple AD9255BCPZRL7-125 units sharing the same clock. Timing requirements specify 0.3 ns setup and 0.4 ns hold relative to CLK+, ensuring sub-nanosecond alignment critical for phased-array radar and MIMO receiver calibration. SYNC operates only in slave mode and requires precise PCB routing to minimize skew.
AD9255BCPZRL7-125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- 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:
- -
AD9255BCPZRL7-125 FAQ
1.How can I place an order for AD9255BCPZRL7-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9255BCPZRL7-125 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 AD9255BCPZRL7-125 reliable?
The price and inventory of AD9255BCPZRL7-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9255BCPZRL7-125 is usually 5 days.
3.What payment methods are accepted for AD9255BCPZRL7-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9255BCPZRL7-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9255BCPZRL7-125?
AD9255BCPZRL7-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9255BCPZRL7-125 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 AD9255BCPZRL7-125?
For technical support, including AD9255BCPZRL7-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9255BCPZRL7-125 requirements.
6.How does Aetrix verify that AD9255BCPZRL7-125 is sourced from the original manufacturer or authorized distributors?
All AD9255BCPZRL7-125 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 AD9255BCPZRL7-125 meets industry standards.
7.What is the process for return or replacement of AD9255BCPZRL7-125?
All AD9255BCPZRL7-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9255BCPZRL7-125, 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 AD9255BCPZRL7-125 part is unused and in its original packaging.
Return procedure for AD9255BCPZRL7-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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