Analog Devices Inc. AD9245BCPZRL7-40

Overview

AD9245BCPZRL7-40 from Analog Devices is a 14-bit, 40 MSPS analog-to-digital converter (ADC) with single 3 V supply operation, differential input (500 MHz bandwidth), on-chip reference, and sample-and-hold amplifier. It delivers 72.7 dBc SNR and 83.0 dBc SFDR at Nyquist, supporting IF sampling in communications receivers and medical ultrasound systems.

For engineers reviewing the AD9245BCPZRL7-40 datasheet, AD9245BCPZRL7-40 pinout, AD9245BCPZRL7-40 application, or AD9245BCPZRL7-40 equivalent, key selection factors include guaranteed no missing codes over –40°C to +85°C, flexible 1 V p-p to 2 V p-p input range, clock duty-cycle stabilizer support, and LFCSP-32 package compatibility with AD9215/AD9235/AD9236 for migration paths.

Technical Context

The AD9245BCPZRL7-40 uses a multistage differential pipelined architecture with output error correction logic to ensure 14-bit accuracy and no missing codes across temperature. Its patented sample-and-hold amplifier supports both differential and single-ended configurations with up to 100 MHz input frequency capability.

It features a dedicated digital output driver supply (DRVDD) for 2.5 V or 3.3 V logic interfacing, an out-of-range (OTR) flag for overflow detection, and a clock duty-cycle stabilizer (DCS) that maintains performance across wide duty-cycle variations-critical for jitter-sensitive IF sampling applications.

Key Specifications

Pinout & Package

The AD9245BCPZRL7-40 is housed in a 32-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, specified for –40°C to +85°C operation. The package requires soldering the exposed paddle to the PCB ground plane for optimal thermal performance and solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog-to-digital conversion applications.

Compared with AD9245BCPZRL7-40, AD9235BCPZRL7-40 offers lower cost and power but sacrifices 2 bits of resolution and ~4 dB SNR, while ADS5271IPFP provides channel synchronization at the expense of single-channel performance and package incompatibility.

Availability

AD9245BCPZRL7-40 is available at Aetrix Electronics and suitable for medical ultrasound imaging, IF sampling in cellular base stations, and battery-powered handheld scopemeters requiring stable component supply and long-term industrial temperature support.

Supply support for AD9245BCPZRL7-40 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 design centers worldwide and ISO 9001-certified manufacturing.

The AD9245 belongs to Analog Devices' high-speed data converter product line, engineered specifically for demanding communications, medical imaging, and test equipment applications where resolution, SNR, and low-power operation are critical.

FAQ

What is the maximum analog input frequency supported by the AD9245BCPZRL7-40?

The AD9245BCPZRL7-40 supports analog input frequencies up to 100 MHz while maintaining specified SNR and SFDR performance, enabled by its 500 MHz analog input bandwidth and patented sample-and-hold amplifier. This allows undersampling of IF signals in communications systems without external filtering, and is validated per datasheet Figure 40 and Table 3 AC specifications at 9.7 MHz, 19.6 MHz, and 32.5 MHz input tones.

Does the AD9245BCPZRL7-40 require an external voltage reference?

No, the AD9245BCPZRL7-40 includes an on-chip voltage reference with selectable 0.5 V or 1.0 V output, controlled by the SENSE pin. When SENSE is tied to AGND, it operates in 1.0 V mode (2 V p-p input range); when tied to AVDD, it operates in 0.5 V mode (1 V p-p input range). External reference use is optional and documented in the "External Reference Operation" section of the AD9245 datasheet Rev. E.

What is the pipeline latency of the AD9245BCPZRL7-40, and how does it affect system timing?

The AD9245BCPZRL7-40 has a fixed pipeline latency of 7 clock cycles from CLK edge to valid D0–D13 output, as confirmed in Table 6 Switching Specifications. This deterministic delay simplifies timing closure in FPGA-based acquisition systems and enables precise alignment with downstream DSP blocks. The OTR flag also exhibits the same 7-cycle latency, ensuring synchronized overflow reporting.

Can the AD9245BCPZRL7-40 operate with a 2.5 V digital supply while using 3 V analog supply?

Yes, the AD9245BCPZRL7-40 supports independent analog (AVDD = 2.7–3.6 V) and digital output driver (DRVDD = 2.25–3.6 V) supplies. With AVDD = 3.0 V and DRVDD = 2.5 V, the digital outputs meet LVCMOS-2.5 V logic levels per Table 5, enabling direct interfacing with 2.5 V FPGAs or ASICs without level shifters-verified in DC and switching specifications sections of the datasheet.

Is the AD9245BCPZRL7-40 pin-compatible with other members of the AD92xx family?

Yes, the AD9245BCPZRL7-40 is pin-compatible with AD9215, AD9235, and AD9236 in the same LFCSP-32 package, as explicitly stated in Product Highlights #3 of the AD9245 datasheet Rev. E. This allows hardware reuse across 10-bit, 12-bit, and 14-bit variants, simplifying platform scalability from 20 MSPS to 80 MSPS without PCB redesign.