Analog Devices Inc. AD7472BRUZ-REEL7

Overview

AD7472BRUZ-REEL7 from Analog Devices is a 12-bit, 1.5 MSPS high-speed successive approximation ADC with parallel interface, operating from a single 2.7 V to 5.25 V supply and consuming only 4.5 mW at 3 V. It features a 20 MHz full-power bandwidth, 70 dB typical SNR at 500 kHz input, and supports external 2.5 V reference for precision analog-to-digital conversion in data acquisition systems.

For engineers reviewing the AD7472BRUZ-REEL7 datasheet, AD7472BRUZ-REEL7 pinout, AD7472BRUZ-REEL7 application, or AD7472BRUZ-REEL7 equivalent, this page delivers verified technical context, real-world timing behavior (e.g., 531.66 ns CONVST-to-BUSY delay at 26 MHz), package-specific thermal impedance (115°C/W TSSOP), and validated alternative options for industrial-grade 12-bit sampling.

Technical Context

The AD7472BRUZ-REEL7 implements a standard successive approximation register (SAR) architecture with no pipeline delays, where sampling is precisely controlled by the falling edge of CONVST and conversion completes in exactly 14 CLK IN cycles. Its track-and-hold amplifier supports >1 MHz input frequencies and acquires within 135 ns (A/B versions) after BUSY goes low.

It uses separate AVDD/DVDD supplies (2.7–5.25 V, max ±0.3 V mismatch) and independent VDRIVE (2.7–5.25 V) to decouple analog performance from digital I/O voltage levels. The 24-lead TSSOP package enables compact layout while maintaining AGND/DGND isolation critical for 70 dB SNR.

Key Specifications

Pinout & Package

AD7472BRUZ-REEL7 is housed in a 24-lead TSSOP package (RU-24), with 0.65 mm lead pitch and thermal impedance of 115°C/W (θJA). This RoHS-compliant surface-mount package supports automated assembly and provides adequate thermal dissipation for continuous 1.5 MSPS operation at ambient temperatures up to +85°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit high-speed parallel ADC applications.

Compared with AD7472ARU-REEL7, the AD7472BRUZ-REEL7 offers tighter ±1 LSB INL for calibration-critical systems; compared with AD7472BR-REEL7, it saves board space and suits compact portable designs despite higher thermal resistance.

Availability

AD7472BRUZ-REEL7 is available at Aetrix Electronics and suitable for industrial process monitoring, high-speed data acquisition, portable medical instrumentation, and motor control feedback systems requiring stable component supply and guaranteed long-term sourcing.

Supply support for AD7472BRUZ-REEL7 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, with design and manufacturing expertise spanning precision data conversion, amplification, and power management.

The AD7472BRUZ-REEL7 belongs to Analog Devices' high-speed SAR ADC product line, engineered for applications demanding low-latency, high-fidelity digitization in industrial, medical, and test equipment where deterministic timing and DC accuracy are essential.

FAQ

What is the maximum clock frequency supported by AD7472BRUZ-REEL7?

The AD7472BRUZ-REEL7 supports a maximum master clock (CLK IN) frequency of 26 MHz at 5 V and 20 MHz at 3 V. At 26 MHz, the 14-cycle conversion time yields its rated 1.5 MSPS throughput. Exceeding these frequencies may cause timing violations or degraded AC performance, as specified in the AD7472 B-version timing table.

Does AD7472BRUZ-REEL7 require an external reference voltage?

Yes, AD7472BRUZ-REEL7 requires an external 2.5 V ±1% reference applied to the REF IN pin. It does not include an internal reference. This external reference defines the full-scale input range (0 V to REF IN) and directly impacts gain accuracy-using a precision 2.5 V reference ensures ±2 LSB gain error remains within specification.

How does the auto sleep mode function on AD7472BRUZ-REEL7?

When CONVST remains low after conversion completes, AD7472BRUZ-REEL7 automatically enters sleep mode on the falling edge of BUSY, drawing ≤1 µA. A rising edge on CONVST wakes the device in ≤1 µs, after which it resumes normal operation. This eliminates software-controlled power gating and reduces average current in burst-sampling applications.

What is the significance of separate AVDD, DVDD, and VDRIVE supplies on AD7472BRUZ-REEL7?

AVDD powers analog circuitry (track-and-hold, core ADC), DVDD powers digital logic (control, timing), and VDRIVE sets output high-voltage level. This separation isolates noise-sensitive analog paths from digital switching noise and enables level-shifting-e.g., AVDD = 5 V for best SNR while VDRIVE = 3 V for 3 V logic compatibility-without external buffers.

Is AD7472BRUZ-REEL7 pin-compatible with other AD747x family members?

AD7472BRUZ-REEL7 shares the same 24-lead TSSOP (RU-24) pinout as AD7472ARU-REEL7 and AD7472YRU-REEL7, but differs from AD7470 variants (10-bit, DB0–DB9 only). Pin compatibility is confirmed across all AD7472 RU-24 variants; however, AD7470 and AD7472 differ in data bus width and timing (12 vs. 14 CLK cycles), requiring firmware updates even with identical packaging.