Analog Devices Inc. AD9236BCPZ-80

Overview

AD9236BCPZ-80 from Analog Devices is a 12-bit, 80 MSPS analog-to-digital converter (ADC) operating from a single 3 V supply (2.7 V to 3.6 V), featuring differential input with 500 MHz bandwidth, on-chip reference and sample-and-hold, and clock duty cycle stabilizer. It delivers SNR = 70.4 dBc and SFDR = 87.8 dBc at 40 MHz input, with DNL = ±0.4 LSB, targeting IF sampling in communications receivers and medical ultrasound systems.

For engineers reviewing the AD9236BCPZ-80 datasheet, AD9236BCPZ-80 pinout, AD9236BCPZ-80 application, or AD9236BCPZ-80 equivalent, key selection considerations include its 80 MSPS sampling rate, 3 V single-supply operation, differential analog input interface, out-of-range (OTR) flag, and LFCSP-32 package thermal performance (θJC = 32.7°C/W).

Technical Context

The AD9236BCPZ-80 employs a multistage differential pipelined architecture with 4-bit first stage, eight 1.5-bit stages, and final 3-bit flash ADC, incorporating output error correction logic to guarantee no missing codes over −40°C to +85°C. Its patented sample-and-hold amplifier supports both differential and single-ended configurations with 100 MHz full-power bandwidth.

It integrates a clock duty cycle stabilizer (DCS) that maintains SNR and SFDR across wide clock duty cycle variations, and features separate analog (AVDD) and digital driver (DRVDD) supplies to support 2.5 V or 3.3 V logic families. The OTR signal provides overflow detection synchronized to the pipeline latency of 7 clock cycles.

Key Specifications

Pinout & Package

The AD9236BCPZ-80 is packaged in a 32-lead LFCSP (CP-32-7) with exposed paddle, requiring soldering to PCB ground plane for optimal thermal performance (θJC = 32.7°C/W) and reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9236BCPZ-80, AD9235BCPZ-80 trades integrated reference for lower cost and identical speed, while AD9245BCPZ-80 increases resolution at the expense of power and thermal headroom-neither offers pin-to-pin replacement without verifying reference and thermal design changes.

Availability

AD9236BCPZ-80 is available at Aetrix Electronics and suitable for high-end medical imaging equipment, IF sampling in communications receivers, and battery-powered instruments requiring stable component supply across industrial temperature range (−40°C to +85°C).

Supply support for AD9236BCPZ-80 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and signal chain applications.

The AD9236 product line delivers high-speed, low-power ADCs optimized for communications infrastructure, medical imaging, and portable test equipment where SNR, SFDR, and thermal efficiency are critical design constraints.

FAQ

What is the maximum analog input frequency supported by the AD9236BCPZ-80?

The AD9236BCPZ-80 supports analog input frequencies up to 100 MHz at full performance, as confirmed by its patented sample-and-hold amplifier bandwidth specification. At 70 MHz input, it maintains SNR = 67.8 dBc and SFDR = 73.2 dBc per datasheet Table 2, making it suitable for undersampling applications in IF receiver architectures where input frequencies exceed the Nyquist limit of 40 MHz.

Does the AD9236BCPZ-80 require an external voltage reference?

No, the AD9236BCPZ-80 includes an on-chip voltage reference configurable for 0.5 V or 1.0 V output, eliminating the need for external reference components in most designs. The SENSE pin selects reference mode, and VREF/REFT/REFB pins support either internal reference operation or external differential reference connection, as detailed in the Functional Block Diagram and Pin Descriptions sections of the Rev. C datasheet.

What is the purpose of the OTR pin on the AD9236BCPZ-80?

The OTR (Out-of-Range) pin on the AD9236BCPZ-80 is an active-high indicator that signals when the analog input exceeds the selected full-scale range. It operates synchronously with the 7-cycle pipeline latency and is intended to be used alongside the MSB to determine whether overflow is positive or negative, enabling robust saturation handling in real-time signal processing chains without requiring post-processing validation.

Can the AD9236BCPZ-80 operate with a 2.5 V digital supply?

Yes, the AD9236BCPZ-80 supports a 2.5 V digital output driver supply (DRVDD) as specified in Table 3 of the datasheet, delivering valid logic levels: high-level output voltage ≥2.45 V (IOH = 0.5 mA) and low-level output voltage ≤0.2 V (IOL = 1.6 mA). This allows direct interfacing with 2.5 V FPGA or ASIC I/O banks without level-shifting circuitry.

Is the AD9236BCPZ-80 pin-compatible with other members of the AD92xx family?

Yes, the AD9236BCPZ-80 is pin-compatible with AD9215BCPZ-80, AD9235BCPZ-80, and AD9245BCPZ-80 in the LFCSP-32 package, as stated in Product Highlights #4 of the datasheet. This enables simplified migration between 10-bit, 12-bit, and 14-bit variants at identical 80 MSPS sampling rates, though reference configuration, power consumption, and AC performance differ across variants.