Analog Devices Inc. AD5339BRMZ-REEL7

Overview

AD5339BRMZ-REEL7 from Analog Devices is a dual-channel, 12-bit buffered voltage-output DAC in an 8-lead MSOP package, operating from 2.5 V to 5.5 V with 250 μA typical supply current at 3 V. It features I²C-compatible 2-wire serial interface (up to 400 kHz), rail-to-rail output amplifiers, and simultaneous update via LDAC. It is used in precision programmable voltage sources for industrial process control and portable instrumentation.

For engineers reviewing the AD5339BRMZ-REEL7 datasheet, AD5339BRMZ-REEL7 pinout, AD5339BRMZ-REEL7 application, or AD5339BRMZ-REEL7 equivalent, key selection criteria include guaranteed monotonicity, 12-bit resolution with ±2 LSB relative accuracy, power-down modes consuming only 80 nA at 3 V, and dual buffered outputs with 0.7 V/μs slew rate and <10 μs settling time.

Technical Context

The AD5339BRMZ-REEL7 implements two independent resistor-string DAC cores, each followed by a rail-to-rail output buffer amplifier. Its 2-wire interface supports SMBus compatibility below 3.6 V and allows up to two devices on one bus via A0 address pin configuration.

It uses a single unbuffered REFIN pin shared by both DACs, accepting reference voltages from 0.25 V to VDD. Power-on reset ensures both outputs initialize to 0 V, and double-buffered input registers enable glitch-free simultaneous updates using the LDAC function.

Key Specifications

Pinout & Package

AD5339BRMZ-REEL7 is housed in an 8-lead MSOP (Mini Small Outline Package) with 0.65 mm pitch, thermally enhanced for compact PCB layouts and industrial temperature operation (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel voltage-output DAC applications.

Compared with AD5339BRMZ-REEL7, AD5338BRMZ-REEL7 trades resolution for better linearity and lower cost, while AD5662ARMZ-REEL7 offers higher resolution and integrated reference at the expense of interface compatibility and power-down efficiency-making AD5339BRMZ-REEL7 optimal for I²C-based, battery-sensitive, 12-bit dual-DAC systems.

Availability

AD5339BRMZ-REEL7 is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, and digital calibration systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for AD5339BRMZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The AD5339BRMZ-REEL7 belongs to the AD533x family of low-power, dual-channel voltage-output DACs designed specifically for space-constrained, battery-operated, and precision calibration applications demanding rail-to-rail output and I²C simplicity.

FAQ

What is the maximum clock frequency supported by the AD5339BRMZ-REEL7 2-wire interface?

The AD5339BRMZ-REEL7 supports I²C-compatible 2-wire serial communication up to 400 kHz. This timing is validated across the full operating temperature range and supply voltage (2.5 V to 5.5 V). At VDD < 3.6 V, the interface also meets SMBus timing specifications, enabling interoperability with SMBus hosts. The AD5339BRMZ-REEL7 does not require external clock conditioning or level-shifting for standard I²C operation.

Does the AD5339BRMZ-REEL7 include an internal reference voltage source?

No, the AD5339BRMZ-REEL7 does not include an internal reference. It relies on an external voltage applied to the REFIN pin, which serves as the reference for both DAC channels. The REFIN input accepts voltages from 0.25 V to VDD and presents an impedance of approximately 45 kΩ in normal operation. For highest accuracy, a buffered external reference such as the REF192 is recommended.

How does the LDAC function operate in the AD5339BRMZ-REEL7?

The LDAC (Load DAC) pin on the AD5339BRMZ-REEL7 enables simultaneous update of both DAC outputs. When LDAC is asserted low (active-low), any previously loaded data in the input registers is transferred to the DAC registers, updating VOUTA and VOUTB at the same time. This eliminates output glitches that would occur if channels updated asynchronously. The AD5339BRMZ-REEL7 also supports software-controlled LDAC via command byte, allowing full functionality without needing the physical pin.

What are the power-down current specifications for the AD5339BRMZ-REEL7?

The AD5339BRMZ-REEL7 achieves ultra-low power-down current: 80 nA typical at 3 V and 200 nA typical at 5 V. This is achieved by disabling internal circuitry while retaining register contents and allowing rapid wake-up (<5 μs at 3 V). Three distinct power-down modes are selectable-1 kΩ-to-GND, 100 kΩ-to-GND, or high-impedance-giving system designers flexibility in managing downstream bias conditions during sleep states.

Is the AD5339BRMZ-REEL7 pin-compatible with other members of the AD533x family?

Yes, the AD5339BRMZ-REEL7 shares identical pinout, package (8-lead MSOP), and interface protocol with AD5337BRMZ-REEL7 (8-bit) and AD5338BRMZ-REEL7 (10-bit). All three devices use the same VDD, VOUTA, VOUTB, REFIN, GND, SDA, SCL, and A0 pin assignments and support identical command structure and timing. This enables drop-in resolution upgrades or downgrades without PCB redesign.