Analog Devices Inc. AD9214BRSZ-105

Overview

AD9214BRSZ-105 from Analog Devices is a 10-bit, 105 MSPS monolithic analog-to-digital converter with on-chip track-and-hold, single 3.3 V supply operation, 300 MHz analog bandwidth, and configurable 1 V_p-p/2 V_p-p input range - deployed in ultrasound equipment and broadband wireless receivers.

For engineers reviewing the AD9214BRSZ-105 datasheet, AD9214BRSZ-105 pinout, AD9214BRSZ-105 application, or AD9214BRSZ-105 equivalent, key selection criteria include SNR at 39 MHz (57 dB), power consumption (285 mW at full rate), ENOB (8.4 bits), aperture jitter (3 ps rms), and dual-supply flexibility (AVDD/DrVDD).

Technical Context

The AD9214BRSZ-105 implements a bit-per-stage pipeline architecture with switch-capacitor techniques, delivering 7 MSBs per stage plus a 3-bit flash sub-ADC, with built-in error correction and data alignment logic. Its differential analog input buffer is internally biased at AVDD/3, supporting both ac- and dc-coupled inputs while enabling common-mode noise rejection.

It features fully TTL/CMOS-compatible encode and digital I/O, separate AVDD (analog core) and DrVDD (digital output driver) supplies, and configurable reference mode (internal 1.25 V or external 1.25 V ±5%) via REFSENSE. The DFS/GAIN pin simultaneously selects data format (twos complement or offset binary) and full-scale input range (1 V_p-p or 2 V_p-p).

Key Specifications

Pinout & Package

The AD9214BRSZ-105 is housed in a 28-lead SSOP (Shrink Small Outline Package), 5.6 mm × 10.2 mm body, 0.65 mm lead pitch, industrial temperature range (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ADC applications.

Compared with AD9215BCPZ-105 and ADS5272IPFP, the AD9214BRSZ-105 delivers optimal balance of performance, integration (on-chip ref, THA), and footprint for single-channel, battery-aware, medium-resolution digitization - avoiding unnecessary resolution overhead or interface complexity.

Availability

AD9214BRSZ-105 is available at Aetrix Electronics and suitable for ultrasound beamforming, broadband wireless receivers, and handheld scopemeters requiring stable component supply across production lifecycles.

Supply support for AD9214BRSZ-105 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 Wilmington, MA.

The AD9214BRSZ-105 belongs to Analog Devices' high-speed data converter product line, designed specifically for cost-sensitive, low-power, space-constrained applications in portable instrumentation and communications infrastructure.

FAQ

What is the maximum analog input frequency supported by the AD9214BRSZ-105?

The AD9214BRSZ-105 has a specified analog input bandwidth of 300 MHz - meaning it can accept and accurately digitize signals up to that frequency before −3 dB attenuation occurs. However, due to Nyquist constraints, its usable input spectrum is limited to ≤52.5 MHz when operating at the full 105 MSPS sample rate. For undersampled applications (e.g., IF sampling), higher input frequencies may be captured, provided they fall within the 300 MHz analog bandwidth and avoid aliasing into the first Nyquist zone.

Does the AD9214BRSZ-105 require an external reference voltage?

No - the AD9214BRSZ-105 includes an internal 1.25 V reference that is enabled by default when REFSENSE (Pin 3) is tied to AGND. In that configuration, REF (Pin 4) functions as a buffered reference output. An external reference is optional and only required when higher accuracy or temperature stability than the internal reference provides is needed; in that case, REFSENSE must be connected to AVDD and a clean 1.25 V ±5% source applied to REF.

How does the DFS/GAIN pin affect the AD9214BRSZ-105's operation?

The DFS/GAIN pin (Pin 2) simultaneously configures both the digital output data format and the full-scale analog input range. Connecting it to AVDD selects twos complement format with 1 V_p-p input range; to AGND selects offset binary with 1 V_p-p; to REF selects twos complement with 2 V_p-p; and leaving it floating selects offset binary with 2 V_p-p. This dual-function pin eliminates the need for separate control lines, simplifying interface design while maintaining configurability.

What is the pipeline latency of the AD9214BRSZ-105, and why does it matter?

The AD9214BRSZ-105 has a fixed pipeline delay of 5 clock cycles - meaning the digital output corresponding to a given analog sample appears 5 ENCODE edges after sampling. This deterministic latency is critical for time-sensitive closed-loop systems (e.g., digital beamforming or real-time feedback control), as it enables precise synchronization and predictable timing margins without variable delays that complicate firmware or FPGA logic design.

Can the AD9214BRSZ-105 operate from a 2.7 V supply?

Yes - the AD9214BRSZ-105 supports AVDD and DrVDD supply voltages from 2.7 V to 3.6 V, as confirmed in the Absolute Maximum Ratings and DC Specifications tables. At 2.7 V, typical power consumption drops to ~250 mW at 105 MSPS, and all key AC specifications (SNR, SFDR, ENOB) remain guaranteed across the industrial temperature range (−40°C to +85°C), making it suitable for brown-out tolerant or low-voltage battery-powered systems.