Analog Devices Inc. AD9214BRS-RL105

Overview

AD9214BRS-RL105 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 selectable 1 V_p-p/2 V_p-p input range - used in ultrasound front-ends and broadband wireless receivers requiring high-speed digitization with low power.

For engineers reviewing the AD9214BRS-RL105 datasheet, AD9214BRS-RL105 pinout, AD9214BRS-RL105 application, or AD9214BRS-RL105 equivalent, key selection considerations include sampling rate (105 MSPS), SNR at 39 MHz (57 dB), power consumption (285 mW), differential analog input interface, and 28-SSOP package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The AD9214BRS-RL105 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 dual-supply operation: AVDD powers analog circuitry and internal timing, while DrVDD independently supplies CMOS digital outputs (D0–D9, OR) for 2.5 V/3.3 V logic interfacing. The ENCODE input accepts TTL/CMOS-compatible clocks with 3.8 ns minimum pulse width and 3 ps rms aperture jitter, and PWRDN enables 30 mW sleep mode with high-impedance outputs.

Key Specifications

Pinout & Package

The AD9214BRS-RL105 is housed in a 28-lead SSOP (Shrink Small Outline Package), 5.6 mm × 10.2 mm body, 0.65 mm pitch, surface-mount, industrial temperature grade (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9215BCPZ-105 and ADS5271IPFP, the AD9214BRS-RL105 offers the lowest system-level cost and smallest PCB footprint for 10-bit, 105 MSPS applications where 300 MHz bandwidth and 57 dB SNR meet design margins - without requiring LVDS infrastructure or advanced packaging.

Availability

AD9214BRS-RL105 is available at Aetrix Electronics and suitable for ultrasound equipment, broadband wireless infrastructure, and cable reverse path monitoring requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for AD9214BRS-RL105 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, serving precision instrumentation, industrial automation, communications, and healthcare markets since 1965.

The AD9214 product line delivers low-power, monolithic high-speed ADCs optimized for portable test equipment and cost-sensitive communications systems - emphasizing ease of use, minimal external components, and robust industrial-grade operation.

FAQ

What is the maximum analog input frequency supported by the AD9214BRS-RL105?

The AD9214BRS-RL105 has a specified analog input bandwidth of 300 MHz, meaning it can accurately digitize signals with frequency content up to that point before significant attenuation occurs. This supports direct sampling of IF signals up to ~70 MHz with margin for harmonics and filtering roll-off. Performance metrics such as SNR and SFDR are validated up to 70 MHz in the datasheet, confirming usable dynamic range within this band.

Does the AD9214BRS-RL105 require an external reference voltage?

No, the AD9214BRS-RL105 includes an internal 1.25 V reference that is enabled by connecting REFSENSE (Pin 3) to AGND. In that configuration, REF (Pin 4) becomes a reference output. An external reference is optional and only needed if higher accuracy or temperature stability is required - in which case a clean 1.25 V ±5% source must drive REF while REFSENSE is tied to AVDD.

How does the DFS/GAIN pin configure input range and data format on the AD9214BRS-RL105?

The DFS/GAIN pin (Pin 2) determines both analog input range and output data coding. Tying it to AGND selects 1 V_p-p input range and offset binary output; to AVDD selects 1 V_p-p and twos complement; to REF selects 2 V_p-p and twos complement; leaving it floating selects 2 V_p-p and offset binary. No software or register writes are involved - configuration is purely hardware-defined at power-up.

What is the power consumption of the AD9214BRS-RL105 in normal and power-down modes?

In full operation at 105 MSPS, the AD9214BRS-RL105 consumes 285 mW (typical). In power-down mode - activated by driving PWRDN (Pin 14) HIGH - total power drops to 30 mW (typical), with digital outputs placed in high-impedance state. Recovery to valid data output requires approximately 15 clock cycles after exiting power-down.

Can the AD9214BRS-RL105 interface directly with a 2.5 V FPGA I/O bank?

Yes, the AD9214BRS-RL105 supports direct interfacing with 2.5 V logic through its dedicated DrVDD supply pin (Pins 16, 24). By setting DrVDD to 2.5 V, the D0–D9 and OR outputs comply with 2.5 V CMOS voltage thresholds (VOH ≥ 2.0 V, VOL ≤ 0.4 V), eliminating the need for external level translators while maintaining signal integrity and timing margins.