Analog Devices Inc. AD9215BRUZ-65

Overview

AD9215BRUZ-65 from Analog Devices is a monolithic, single-supply 10-bit analog-to-digital converter (ADC) operating at 65 MSPS with 3 V supply (2.7–3.3 V), 300 MHz analog input bandwidth, and on-chip sample-and-hold amplifier and voltage reference. It delivers 58 dBc SNR and 77 dBc SFDR at Nyquist, supporting IF sampling in communications receivers and ultrasound front-ends.

For engineers reviewing the AD9215BRUZ-65 datasheet, AD9215BRUZ-65 pinout, AD9215BRUZ-65 application, or AD9215BRUZ-65 equivalent, key selection considerations include its differential input flexibility (1–2 V_p-p range), clock duty cycle stabilizer, 5-cycle pipeline latency, and TSSOP-28 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The AD9215BRUZ-65 employs a multistage differential pipelined ADC architecture with output error correction logic, enabling guaranteed no-missing-codes performance across temperature. Its patented differential sample-and-hold amplifier supports both ac- and dc-coupled inputs with configurable single-ended or differential operation.

Conversion is synchronized to the rising edge of a single-ended CMOS clock input; an integrated duty cycle stabilizer maintains performance over wide clock pulse width variation. Digital outputs are available in offset binary or twos complement format, with an out-of-range (OR) flag indicating signal overflow beyond the selected input span.

Key Specifications

Pinout & Package

The AD9215BRUZ-65 is housed in a 28-lead TSSOP (RU-28) surface-mount package with exposed pad not present (unlike CP-32 variant); pin 15–16 and 25–28 are DNC (do not connect), and the exposed thermal pad is absent in this package variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9215BCPZ-65 and AD9226ARZ-65, the AD9215BRUZ-65 provides the best balance of integration (on-chip reference, DCS), power efficiency (96 mW), and manufacturability (TSSOP-28) for mid-performance, cost-sensitive ADC applications.

Availability

AD9215BRUZ-65 is available at Aetrix Electronics and suitable for ultrasound equipment, IF sampling in communications receivers, and battery-powered instruments requiring stable component supply and long-term production continuity.

Supply support for AD9215BRUZ-65 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD9215 product line delivers low-power, high-speed pipeline ADCs optimized for communications infrastructure, medical imaging, and portable test equipment where integration, thermal efficiency, and SNR consistency are critical.

FAQ

What is the maximum sampling rate supported by the AD9215BRUZ-65?

The AD9215BRUZ-65 is rated for a maximum conversion rate of 65 MSPS, as confirmed in Table 4 of the Rev. B datasheet. This is a fixed specification for this variant-distinct from the AD9215BRUZ-80 (80 MSPS) and AD9215BRUZ-105 (105 MSPS). Operating above 65 MSPS is not characterized or guaranteed and may result in degraded SNR, missing codes, or functional failure. The AD9215BRUZ-65 achieves 58 dBc SNR and 77 dBc SFDR at this rate with a 2 V_p-p differential input.

Does the AD9215BRUZ-65 require an external voltage reference?

No, the AD9215BRUZ-65 includes an on-chip voltage reference configurable for 1.0 V or 0.5 V output, eliminating the need for external reference components. As specified in Table 1, the internal reference exhibits ±2 mV output voltage error (1 V mode) and ±230 ppm/°C drift. External reference can be used via the VREF and SENSE pins if tighter accuracy or custom voltage levels are required, but it is not mandatory for standard operation.

What package type is used for the AD9215BRUZ-65?

The AD9215BRUZ-65 uses a 28-lead TSSOP (Thin Shrink Small Outline Package), designated RU-28 in Analog Devices documentation. This differs from the LFCSP-32 (CP-32-7) package used in the AD9215BCPZ-65 variant. The RU-28 package has no exposed thermal pad, requires standard reflow profiles, and is compatible with automated optical inspection and standard PCB assembly processes.

How does the clock duty cycle stabilizer function in the AD9215BRUZ-65?

The clock duty cycle stabilizer (DCS) in the AD9215BRUZ-65 corrects wide variations in input clock duty cycle (e.g., 30%–70%) while preserving AC performance. As shown in Figure 25 of the datasheet, enabling DCS maintains SNR >57 dBc and SFDR >75 dBc across the full duty cycle range. The feature is controlled via the MODE pin and reduces dependency on precision clock generators-critical for systems using microcontroller-derived clocks or low-cost oscillators.

What is the purpose of the OR (out-of-range) pin on the AD9215BRUZ-65?

The OR (out-of-range) pin on the AD9215BRUZ-65 is an active-high digital flag that asserts when the analog input exceeds the selected full-scale range (±0.5 V or ±1.0 V, depending on VREF mode). As described in the Product Description and Table 4, it works in conjunction with the MSB to indicate whether the overflow is positive or negative. This enables real-time signal clipping detection and automatic gain control (AGC) loop implementation without requiring post-processing analysis of the digital output stream.