Analog Devices Inc. AD9214BRS-RL65

Overview

AD9214BRS-RL65 from Analog Devices is a 10-bit, 65 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 or 2 V_p-p input range - deployed in handheld scopemeters and ultrasound front-ends where low power and compact size are critical.

For engineers reviewing the AD9214BRS-RL65 datasheet, AD9214BRS-RL65 pinout, AD9214BRS-RL65 application, or AD9214BRS-RL65 equivalent, key selection considerations include SNR at 39 MHz (57 dB), power-down mode (30 mW), TTL/CMOS-compatible digital outputs, differential analog input architecture, and 28-SSOP package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The AD9214BRS-RL65 implements a bit-per-stage pipeline architecture with switch-capacitor techniques, delivering 7 MSBs per stage plus a 3-bit flash sub-converter, 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 10-bit CMOS digital outputs - allowing interface flexibility with 2.5 V or 3.3 V logic families. The ENCODE input accepts TTL/CMOS-level clocks, and aperture uncertainty is specified at 3 ps rms for precise sampling timing control.

Key Specifications

Pinout & Package

The AD9214BRS-RL65 is housed in a 28-lead SSOP (Shrink Small Outline Package), 5.6 mm × 10.2 mm body, 0.65 mm lead pitch, surface-mount compatible with industrial temperature range (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9214BRS-RL65, AD9215BRSZ-65 trades higher resolution and SNR for increased power and cost, while ADS5271IPFP offers LVDS noise immunity at the expense of single-ended logic compatibility and different package constraints - making AD9214BRS-RL65 optimal for cost-sensitive, space-limited, TTL/CMOS-based portable instrumentation.

Availability

AD9214BRS-RL65 is available at Aetrix Electronics and suitable for handheld scopemeters, ultrasound front-ends, and cable reverse-path monitoring systems requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for AD9214BRS-RL65 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 industrial, communications, automotive, and healthcare markets with precision data conversion and signal conditioning solutions.

The AD9214 product line delivers low-power, medium-speed ADCs optimized for portable test equipment and medical imaging systems - emphasizing integration, ease of use, and robustness in thermally constrained and battery-powered environments.

FAQ

What is the maximum analog input frequency supported by the AD9214BRS-RL65?

The AD9214BRS-RL65 has an analog input bandwidth of 300 MHz, meaning it can accurately digitize signals with frequency content up to that point. However, its 65 MSPS sampling rate limits the Nyquist bandwidth to 32.5 MHz. Therefore, while high-frequency transients are preserved, usable signal bandwidth for alias-free sampling is 0–32.5 MHz. Anti-alias filtering must be applied accordingly to prevent folding of out-of-band energy into the baseband. The AD9214BRS-RL65 maintains 57 dB SNR at 39 MHz input, confirming robust high-frequency response within its designed operating envelope.

Does the AD9214BRS-RL65 require an external reference voltage?

No, the AD9214BRS-RL65 includes an on-chip 1.25 V reference that is enabled by connecting REFSENSE (Pin 3) to AGND - in this configuration, REF (Pin 4) becomes a reference output. An external reference is optional and used only when higher accuracy or temperature stability is needed; in that case, REFSENSE is tied to AVDD and a clean 1.25 V ±5% source drives REF. The AD9214BRS-RL65's internal reference is fully characterized over temperature and supports both 1 V_p-p and 2 V_p-p input ranges without recalibration.

How does the DFS/GAIN pin configure the AD9214BRS-RL65?

The DFS/GAIN pin (Pin 2) simultaneously selects both the output data format (twos complement or offset binary) and the full-scale analog input range (1 V_p-p or 2 V_p-p). Connecting it to AGND yields offset binary with 1 V_p-p; to AVDD gives twos complement with 1 V_p-p; to REF enables twos complement with 2 V_p-p; leaving it floating configures offset binary with 2 V_p-p. This hardware-based configuration eliminates firmware overhead and ensures deterministic behavior at power-up - a key advantage in safety-critical or boot-time-constrained systems using the AD9214BRS-RL65.

What is the power-down current of the AD9214BRS-RL65, and how quickly does it recover?

In power-down mode (PWRDN = HIGH), the AD9214BRS-RL65 draws 10–15 mA from AVDD, corresponding to ~30 mW total power dissipation. Upon exit from power-down, the device requires approximately 15 clock cycles before valid output data is guaranteed - during this recovery period, digital outputs remain in high-impedance state. This behavior is fully characterized over temperature and ensures predictable wake-up latency in burst-mode acquisition systems relying on the AD9214BRS-RL65.

Can the AD9214BRS-RL65 interface directly with a 2.5 V FPGA I/O bank?

Yes, the AD9214BRS-RL65 supports direct interfacing with 2.5 V logic through its dedicated DrVDD supply pin (Pins 16, 24). By setting DrVDD = 2.5 V, the D0–D9 outputs swing between 0 V and 2.5 V with TTL/CMOS-compatible thresholds, eliminating the need for external level shifters. The digital outputs remain functional across the full industrial temperature range, and the separate DrVDD rail isolates output switching noise from the analog supply (AVDD), preserving ADC SNR - a critical capability confirmed in AD9214BRS-RL65 system-level validation.