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Analog Devices Inc. AD9253-125EBZ
- Part No.:
- AD9253-125EBZ
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
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AD9253-125EBZ.pdf
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Product details
Overview
AD9253-125EBZ from Analog Devices is a quad-channel, 14-bit, 125 MSPS serial LVDS analog-to-digital converter with on-chip sample-and-hold, 1.8 V supply operation, 650 MHz full-power analog bandwidth, and integrated digital test pattern generation. It serves as the front-end digitizer in high-speed imaging and quadrature radio receiver systems requiring precise multichannel synchronization.
For engineers reviewing the AD9253-125EBZ datasheet, AD9253-125EBZ pinout, AD9253-125EBZ application, or AD9253-125EBZ equivalent, key selection criteria include its 74 dB SNR at Nyquist, ±2.0 LSB INL (typ), programmable output clock/data alignment, multichip sync capability, and support for both ANSI-644 LVDS and low-power reduced-signal LVDS output modes.
Technical Context
The AD9253-125EBZ implements a 14-bit, 4-stage pipelined ADC architecture with 1-bit redundancy per stage for digital error correction, enabling stable 125 MSPS conversion with 16-clock-cycle pipeline latency. Its analog input uses a differential switched-capacitor sampling circuit optimized for 2 Vp-p input range and midsupply common-mode biasing via the VCM pin.
Digital outputs are serialized over two LVDS lanes using DDR timing, with dedicated DCO+/- and FCO+/- clocks for data capture and frame alignment. The SPI interface (SCLK/SDIO/CSB) configures output resolution (12-/14-/16-bit), lane mode (one/two), frame rate (1×/2×), and power states including per-channel power-down (<2 mW total off-state).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete amplitude levels for high-fidelity signal capture in ultrasound and RF applications |
| Sampling Rate | 125 MSPS - supports Nyquist-limited bandwidth up to 62.5 MHz with real-time digitization of wideband IF signals |
| SNR / SFDR | 74 dB / 90 dBc (to Nyquist) - enables detection of weak signals buried under noise and spurs in medical imaging and spectrum analysis |
| Analog Bandwidth | 650 MHz - preserves signal integrity for high-frequency inputs up to 200 MHz without external anti-alias filtering |
| Power Consumption | 457 mW (4-channel sine wave, ANSI-644 LVDS) - balances performance and thermal budget in dense PCB layouts |
| Digital Interface | Serial LVDS (ANSI-644 default or low-power reduced-signal mode) - reduces EMI and routing complexity vs. parallel CMOS outputs |
| Supply Voltage | 1.8 V AVDD/DRVDD - simplifies power delivery and enables direct interfacing with 1.8 V FPGA I/O banks |
Pinout & Package
The AD9253-125EBZ is housed in a RoHS-compliant, thermally enhanced 48-lead LFCSP (7 mm × 7 mm, CP-48-13) with exposed analog ground pad requiring solder connection to PCB ground plane for optimal thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+A / VIN−A | ADC A differential analog input | Accepts 2 Vp-p differential signal; requires external common-mode bias via VCM or transformer center-tap |
| CLK+ / CLK− | Differential encode clock input | Supports LVDS/LVPECL/1.8 V CMOS; defines sampling instant on rising edge; 10–1000 MHz range |
| D0+A / D0−A, D1+A / D1−A | Channel A LVDS data outputs (two-lane mode) | Transmit serialized 14-bit samples; polarity configurable via SPI register 0x14 |
| DCO+ / DCO− | Data clock output | DDR-aligned clock at fSAMPLE/2; used by FPGA/ASIC to latch D0/D1 data on both edges |
| FCO+ / FCO− | Frame clock output | Indicates start of new byte/frame; synchronized to DCO for deterministic timing recovery |
| SCLK / SDIO / CSB | SPI serial interface | Configures operating modes, test patterns, power states, and output alignment without external logic |
| PDWN | Global power-down control | Active-high input; places entire device into <2 mW standby with full state retention |
| VCM | Common-mode voltage reference output | Provides 0.9 V nominal bias for external analog input networks; must be decoupled with 0.1 µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel synchronization | Hardware multichip sync (SYNC pin) and internal clock divider enable deterministic phase alignment across multiple AD9253-125EBZ units |
| Flexible output configuration | Programmable resolution (12/14/16-bit), lane count (one/two), frame rate (1×/2×), and bit orientation via SPI registers |
| Built-in test pattern generation | On-chip deterministic, pseudorandom, and user-defined digital patterns eliminate need for external signal sources during board validation |
| Low-power scalable operation | Per-channel power-down and reduced-signal LVDS mode cut total power by >25% versus full-rate ANSI-644 mode |
| Robust analog input interface | 650 MHz bandwidth, ±2.0 LSB INL, and input-referred noise of 0.94 LSBrms support high-dynamic-range signal acquisition |
Applications
| Medical Ultrasound Imaging | High-Speed Quadrature Radio Receiver |
|---|---|
Use Scenario: Digitizing I/Q baseband signals from phased-array transducer front-ends with simultaneous multi-beam processing. IC Role / Device Role / Timing Role: Quad-channel ADC capturing four independent analog channels at 125 MSPS with sub-ns inter-channel skew for coherent beamforming. Use Value: 74 dB SNR and 90 dBc SFDR preserve dynamic range needed to resolve weak echo returns amid strong near-field reflections. |
Use Scenario: Direct sampling of 70–200 MHz IF signals in diversity receivers for cellular base stations and radar systems. IC Role / Device Role / Timing Role: High-bandwidth digitizer providing synchronized I/Q pairs with programmable clock division for flexible LO frequency planning. Use Value: 650 MHz analog bandwidth eliminates external anti-alias filters while maintaining ENOB ≥11.5 bits at 200 MHz input. |
| Automated Test Equipment (ATE) | Electronic Warfare Signal Intelligence |
Use Scenario: High-throughput waveform capture in modular PXI-based ATE platforms requiring traceable multichannel timing. IC Role / Device Role / Timing Role: Precision digitizer with SPI-configurable output alignment and deterministic pipeline latency (16 clocks) for repeatable trigger-to-data timing. Use Value: Built-in digital test patterns and multichip sync allow rapid system-level calibration without external pattern generators. |
Use Scenario: Wideband signal interception and analysis across instantaneous bandwidths exceeding 100 MHz in SIGINT receivers. IC Role / Device Role / Timing Role: Front-end ADC delivering four synchronized 125 MSPS streams to FPGA-based FFT engines with low inter-channel crosstalk (−95 dB). Use Value: −95 dB crosstalk and 77–94 dBc SFDR at 70 MHz enable accurate separation of closely spaced emitters in dense RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9633-125EBZ | 12-bit resolution, identical 48-lead LFCSP package and pinout, same 125 MSPS rate and LVDS interface | Lower dynamic range (69 dB SNR) limits use in demanding ultrasound or high-IF applications | Select when 12-bit resolution suffices and PCB layout reuse is critical; no hardware changes required |
| AD9653-125EBZ | 16-bit resolution, same quad-channel architecture and 125 MSPS rate, but higher power (640 mW) and wider 72-lead LFCSP package | Higher ENOB (13.2 bits) supports precision instrumentation but requires new PCB footprint and thermal design | Select when ultimate SNR (>76 dB) and linearity are mandatory, accepting increased cost and layout effort |
Compared with AD9253-125EBZ, AD9633-125EBZ offers drop-in compatibility at lower resolution, while AD9653-125EBZ trades higher power and larger footprint for 2 extra bits of resolution-enabling trade-offs between dynamic range, thermal density, and board space in multichannel systems.
Availability
AD9253-125EBZ is available at Aetrix Electronics and suitable for medical ultrasound systems, high-speed test equipment, quadrature radio receivers, and electronic warfare platforms requiring stable component supply and long-term design continuity.
Supply support for AD9253-125EBZ 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 technologies, serving industrial, automotive, communications, and healthcare markets with precision data converters and RF solutions.
The AD9253 product line delivers quad-channel, high-speed ADCs optimized for space-constrained, multichannel systems where synchronization, low power, and flexible digital interfacing are essential-targeting ultrasound, software-defined radio, and automated test applications.
FAQ
What is the maximum analog input frequency supported by the AD9253-125EBZ?
The AD9253-125EBZ features a 650 MHz full-power analog bandwidth, allowing it to accurately digitize input signals up to 200 MHz while maintaining 70.7 dB SNR and 84 dBc SFDR. This bandwidth specification is measured at 125 MSPS and enables direct RF sampling without external anti-alias filtering in many IF receiver applications. The device maintains usable performance beyond the Nyquist frequency due to its wide analog input path, though aliasing must be managed in system-level design.
Does the AD9253-125EBZ require an external voltage reference?
No, the AD9253-125EBZ includes an internal 1.0 V reference with ±2% tolerance over temperature, eliminating the need for an external reference in most applications. The VREF pin can be used as an output or input; when configured in internal reference mode (SENSE tied to AVDD), it delivers 0.98 V to 1.02 V. External reference operation is supported but not required, simplifying BOM and layout for cost-sensitive designs using the AD9253-125EBZ.
How does the AD9253-125EBZ handle multichip synchronization?
The AD9253-125EBZ implements hardware multichip sync via the SYNC input pin, which resets internal clock dividers and aligns sampling phases across multiple devices. When combined with identical clock distribution and proper PCB layout (matched trace lengths), this feature achieves sub-nanosecond inter-device skew. The AD9253-125EBZ also supports programmable clock division to generate synchronized lower-rate sampling clocks, making it suitable for phased-array and MIMO systems requiring deterministic timing relationships.
What LVDS output modes does the AD9253-125EBZ support?
The AD9253-125EBZ supports two LVDS output modes: standard ANSI-644 (345 mV typical differential swing) and low-power reduced-signal mode (200 mV typical swing). Both operate at 125 MSPS with DDR serialization across two lanes. The mode is selected via SPI register 0x15, and the reduced-signal option lowers total power by ~10% while maintaining signal integrity on properly terminated 100 Ω differential traces-ideal for power-constrained or high-density FPGA interface designs using the AD9253-125EBZ.
Can the AD9253-125EBZ operate with a single 1.8 V supply?
Yes, the AD9253-125EBZ operates from a single 1.8 V supply for both analog (AVDD) and digital output driver (DRVDD) domains, simplifying power delivery. AVDD and DRVDD pins are internally isolated but share the same 1.8 V rail in typical implementations. The device draws 250 mA from AVDD and 100 mA from DRVDD at 125 MSPS, totaling 457 mW for all four channels in ANSI-644 LVDS mode-confirming full functionality without auxiliary supplies when using the AD9253-125EBZ.
AD9253-125EBZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Number of A/D Converters:
- 4
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 125M
- Data Interface:
- LVDS, Serial, SPI
- Input Range:
- 2Vpp
- Power (Typ) @ Conditions:
- 110mW @ 25MSPS
- Utilized IC / Part:
- AD9253
- Contents:
- Board(s)
AD9253-125EBZ FAQ
1.How can I place an order for AD9253-125EBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9253-125EBZ 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 AD9253-125EBZ reliable?
The price and inventory of AD9253-125EBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9253-125EBZ is usually 5 days.
3.What payment methods are accepted for AD9253-125EBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9253-125EBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9253-125EBZ?
AD9253-125EBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9253-125EBZ 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 AD9253-125EBZ?
For technical support, including AD9253-125EBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9253-125EBZ requirements.
6.How does Aetrix verify that AD9253-125EBZ is sourced from the original manufacturer or authorized distributors?
All AD9253-125EBZ 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 AD9253-125EBZ meets industry standards.
7.What is the process for return or replacement of AD9253-125EBZ?
All AD9253-125EBZ units undergo pre-shipment inspection (PSI). If there is an issue with AD9253-125EBZ, 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 AD9253-125EBZ part is unused and in its original packaging.
Return procedure for AD9253-125EBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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