Analog Devices Inc. AD9214BRS-80

Overview

AD9214BRS-80 from Analog Devices is a 10-bit, 80 MSPS monolithic analog-to-digital converter with on-chip track-and-hold, single 3.3 V supply operation, 300 MHz analog bandwidth, and selectable 1 V_p-p/2 V_p-p input range - used in handheld scopemeters and ultrasound front-ends where low power and compact size are critical.

For engineers reviewing the AD9214BRS-80 datasheet, AD9214BRS-80 pinout, AD9214BRS-80 application, or AD9214BRS-80 equivalent, key selection criteria include SNR at 39 MHz (57 dB), power consumption (285 mW at full rate), ENOB (9.0 bits @ 10 MHz), aperture jitter (3 ps rms), and dual-supply flexibility (AVDD/DrVDD).

Technical Context

The AD9214BRS-80 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 via REFSENSE pin - allowing either internal 1.25 V reference (REF output) or external 1.25 V ±5% reference (REF input).

Key Specifications

Pinout & Package

AD9214BRS-80 is housed in a 28-lead SSOP (Shrink Small Outline Package), surface-mount, industrial-grade package (−40°C to +85°C), with exposed pad not electrically connected. Pin pitch is 0.65 mm; body dimensions are 10.2 mm × 5.3 mm × 1.75 mm (max).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9215BCPZ-80 and MAX1186ETL+, the AD9214BRS-80 uniquely balances integration (on-chip THA + reference), power efficiency (285 mW), and compact 28-SSOP packaging - making it the preferred choice for portable instrumentation and embedded signal acquisition where board area and thermal envelope are constrained.

Availability

AD9214BRS-80 is available at Aetrix Electronics and suitable for handheld scopemeters, ultrasound front-ends, and cable reverse-path receivers requiring stable component supply, long-term industrial temperature support, and consistent parametric performance across production lots.

Supply support for AD9214BRS-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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.

The AD9214 product line delivers highly integrated, low-power, medium-speed ADCs optimized for portable test equipment, medical imaging, and broadband communications - emphasizing ease of use, minimal external components, and industrial temperature reliability.

FAQ

What is the maximum analog input frequency supported by the AD9214BRS-80?

The AD9214BRS-80 has a 300 MHz analog input bandwidth, meaning it can accurately digitize signals with frequency content up to 300 MHz before significant attenuation occurs. However, due to Nyquist sampling constraints, its 80 MSPS maximum conversion rate limits usable input frequencies to ≤40 MHz for unaliased baseband sampling. For IF sampling, higher input frequencies (e.g., 70 MHz) are supported with appropriate anti-alias filtering and proper clock jitter control.

Does the AD9214BRS-80 require an external reference voltage?

No - the AD9214BRS-80 includes an internal 1.25 V reference that is enabled by connecting REFSENSE (Pin 3) to AGND, configuring REF (Pin 4) as an output. An external 1.25 V ±5% reference may be used instead by connecting REFSENSE to AVDD, but it is not required. In either case, a 0.1 µF capacitor must be placed between REF and AGND for noise suppression.

How does the DFS/GAIN pin affect the AD9214BRS-80's operation?

The DFS/GAIN pin (Pin 2) simultaneously configures both output data format and analog input range. Connecting it to AGND selects offset binary output with 1 V_p-p input range; to AVDD selects twos complement with 1 V_p-p; to REF selects twos complement with 2 V_p-p; leaving it floating selects offset binary with 2 V_p-p. This dual function eliminates need for separate control lines in space-constrained designs.

What is the power-down current of the AD9214BRS-80, and how quickly does it resume operation?

In power-down mode (PWRDN = HIGH), the AD9214BRS-80 draws 10–15 mA from AVDD, corresponding to ~30 mW total power. Upon exit from power-down, the device requires approximately 15 clock cycles to stabilize and deliver valid output data. During this recovery period, digital outputs remain in high-impedance state, preventing bus contention.

Can the AD9214BRS-80 interface directly with 2.5 V logic families?

Yes - the AD9214BRS-80 provides a dedicated DrVDD pin (Pins 16, 24) for digital output drivers, allowing independent supply voltage setting from 2.7 V to 3.6 V. To interface with 2.5 V logic, apply 2.5 V to DrVDD and tie DGND to the 2.5 V logic ground. The outputs will then swing between 0 V and 2.5 V with CMOS-compatible thresholds, eliminating level-shifter requirements.