Analog Devices Inc. AD9253BCPZRL7-125

Overview

AD9253BCPZRL7-125 from Analog Devices is a quad-channel, 14-bit, 125 MSPS serial LVDS analog-to-digital converter optimized for high-speed imaging and medical ultrasound systems. It operates from a single 1.8 V supply, delivers 74 dB SNR and 90 dBc SFDR at Nyquist, supports 650 MHz full-power analog bandwidth, and features built-in digital test pattern generation and multichip synchronization.

For engineers reviewing the AD9253BCPZRL7-125 datasheet, AD9253BCPZRL7-125 pinout, AD9253BCPZRL7-125 application, or AD9253BCPZRL7-125 equivalent, key selection criteria include its 125 MSPS sampling rate with serial LVDS output, per-channel power-down capability (<2 mW), programmable output resolution (12/14/16-bit), and support for deterministic multichip sync in diversity radio receiver designs.

Technical Context

The AD9253BCPZRL7-125 implements a 14-bit 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 on-chip sample-and-hold circuit accepts 2 V p-p differential analog inputs referenced to an internal 1.0 V reference or external VREF, with common-mode bias set via the VCM pin.

Digital outputs use ANSI-644-compliant LVDS with configurable two-lane or one-lane serialization, DDR/SDR framing modes, and programmable data alignment. Clock handling includes multichip sync via SYNC input, clock divider, and dedicated DCO/FCO outputs synchronized to sampled data with sub-nanosecond aperture jitter (135 fs rms).

Key Specifications

Pinout & Package

AD9253BCPZRL7-125 is housed in a RoHS-compliant 48-lead LFCSP (7 mm × 7 mm, CP-48-13) with exposed thermal pad soldered to AGND for optimal thermal performance (θJA = 23.7°C/W, 0 m/sec airflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel, high-speed ADC applications.

Compared with AD9253BCPZRL7-125, AD9633BCPZRL7-105 trades resolution and dynamic range for cost and pin compatibility, while AD9257BCPZ-65 prioritizes ultra-low power and integration over speed-making AD9253BCPZRL7-125 the only option meeting 125 MSPS, 14-bit, and quad-channel requirements simultaneously.

Availability

AD9253BCPZRL7-125 is available at Aetrix Electronics and suitable for medical ultrasound imaging, quadrature radio receivers, high-speed industrial imaging, and test equipment requiring stable component supply across long production lifecycles.

Supply support for AD9253BCPZRL7-125 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, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD9253 belongs to Analog Devices' high-speed data converter product line, designed specifically for space-constrained, power-sensitive applications demanding multichannel synchronization, low-latency digital interfacing, and robust AC performance in RF and imaging signal chains.

FAQ

What is the maximum sampling rate supported by the AD9253BCPZRL7-125?

The AD9253BCPZRL7-125 supports a maximum sampling rate of 125 MSPS, as indicated by the "-125" suffix in its part number. This rate is validated under full-spec conditions including 2 V p-p differential input, 1.8 V supplies, and LVDS ANSI-644 output mode. At this rate, the device maintains 74 dB SNR and 90 dBc SFDR up to Nyquist, with pipeline latency fixed at 16 clock cycles. The AD9253BCPZRL7-125 achieves this using a multistage pipelined architecture with digital error correction.

Does the AD9253BCPZRL7-125 require an external voltage reference?

No, the AD9253BCPZRL7-125 includes an internal 1.0 V voltage reference that is factory-trimmed and temperature-stable (±2 ppm/°C drift). The VREF pin serves as both output and input: it defaults to sourcing 1.0 V, but can accept an external reference (0.5 V to 1.25 V) for improved accuracy or noise performance. When using the internal reference, VREF must be decoupled with a 0.1 µF capacitor to AGND. The AD9253BCPZRL7-125 does not require external reference components for standard operation.

How does the SYNC pin function in multichip synchronization?

The SYNC pin on the AD9253BCPZRL7-125 resets the internal clock divider and aligns the sampling edges of multiple AD9253BCPZRL7-125 devices when asserted synchronously. This ensures deterministic phase relationships between channels across chips-critical for beamforming in ultrasound or MIMO calibration in radios. The SYNC pulse must meet setup/hold timing relative to CLK+ (tSSYNC ≥ 1.2 ns, tHSYNC ≥ −0.2 ns). The AD9253BCPZRL7-125 retains sync alignment after power-up if the clock divider is configured identically across all devices.

What LVDS output configurations does the AD9253BCPZRL7-125 support?

The AD9253BCPZRL7-125 supports two primary LVDS output configurations: default two-lane mode (D0±x/D1±x per channel) and optional one-lane mode (reconfigurable via SPI register 0x21 Bits[6:4]). Both modes support DDR or SDR framing, 12/14/16-bit resolution, and programmable data alignment. Output voltage swing is configurable: ANSI-644 mode (290–400 mV) or low-power reduced-swing mode (160–230 mV). The AD9253BCPZRL7-125 generates DCO and FCO clocks to coordinate capture timing in either configuration.

Can the AD9253BCPZRL7-125 operate with a single 1.8 V supply?

Yes, the AD9253BCPZRL7-125 operates from a single 1.8 V supply applied to both AVDD (analog core) and DRVDD (digital output drivers). AVDD pins (3, 4, 7, 34, 39, 45, 46) and DRVDD pins (8, 29) must each be independently decoupled with 0.1 µF + 10 µF capacitors. Total power consumption at 125 MSPS is 457 mW in full four-channel LVDS ANSI-644 mode, scaling down to <2 mW in full power-down. No additional supplies (e.g., 3.3 V or 5 V) are required for the AD9253BCPZRL7-125 to meet datasheet specifications.