Analog Devices Inc. ADR380ARTZ-REEL7

Overview

ADR380ARTZ-REEL7 from Analog Devices is a precision 2.048 V band gap voltage reference IC in a 3-lead SOT-23 package, delivering ±5 mV initial accuracy, 25 ppm/°C max temperature coefficient, and 120 μA max quiescent current for low-power, high-stability applications such as portable medical instruments and data acquisition systems.

For engineers reviewing the ADR380ARTZ-REEL7 datasheet, ADR380ARTZ-REEL7 pinout, ADR380ARTZ-REEL7 application, or ADR380ARTZ-REEL7 equivalent, key selection criteria include output voltage tolerance, load regulation (70 ppm/mA), line regulation (25 ppm/V), minimum supply headroom (300 mV), and industrial temperature range (−40°C to +85°C).

Technical Context

The ADR380ARTZ-REEL7 implements patented temperature drift curvature correction to minimize nonlinearity of VOUT vs. temperature, with TCVOUT specified at 5–25 ppm/°C over −40°C to +85°C. Its micropower, low-dropout architecture supports stable operation with VIN as low as 300 mV above VOUT (2.048 V).

It features a ground-referenced band gap cell with unequal PNP current densities and laser-trimmed resistors to achieve high initial accuracy (±5 mV) and low long-term drift (50 ppm over 1000 hours). Output noise is 5 μV p-p (0.1 Hz to 10 Hz), and turn-on settling time is 20 μs.

Key Specifications

Pinout & Package

Package: 3-lead SOT-23 (RT-3), JEDEC TO-236-AB compliant, 2.90 mm × 1.30 mm footprint, 1.40 mm height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Compared with ADR380ARTZ-REEL7, ADR3420ARMZ-REEL7 offers superior accuracy and stability at the cost of pin count and layout compatibility, while REF3020AIDBZR trades drift performance for lower quiescent current-neither is pin-compatible, and both require validation of thermal and noise behavior in the target system.

Availability

ADR380ARTZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical instruments, and industrial process control systems requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for ADR380ARTZ-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, headquartered in Norwood, MA.

The ADR380ARTZ-REEL7 belongs to Analog Devices' precision voltage reference product line, engineered for low-power, high-accuracy applications in portable and industrial instrumentation where stability, size, and supply headroom are critical constraints.

FAQ

What is the maximum load current supported by the ADR380ARTZ-REEL7?

The ADR380ARTZ-REEL7 supports up to 5 mA of continuous output current while maintaining specified load regulation of 70 ppm/mA. At 5 mA, the output voltage deviation remains within ±350 ppm (≈ ±0.717 mV) relative to nominal 2.048 V, verified across −40°C to +85°C. Short-circuit current is rated at 25 mA, but sustained operation above 5 mA requires thermal derating per θJA = 333°C/W.

Does the ADR380ARTZ-REEL7 require an output capacitor for stability?

No, the ADR380ARTZ-REEL7 does not require an output capacitor for stability under any load condition. A 0.1 μF ceramic capacitor may be added to reduce very low-frequency noise (e.g., 5 μV p-p suppression below 10 Hz), but it increases turn-on settling time and is optional. The device remains unconditionally stable with capacitive loads from 0 to ≥100 nF, as confirmed in Figures 19–21 of the Rev. C datasheet.

What is the minimum input voltage required for regulation with the ADR380ARTZ-REEL7?

The ADR380ARTZ-REEL7 requires a minimum supply headroom of 300 mV above its 2.048 V output voltage, meaning VIN must be ≥2.348 V for regulation. This low dropout enables operation from partially discharged single-cell batteries (e.g., 2.4 V alkaline or 2.5 V LiFePO₄) and simplifies power architecture in space-constrained designs.

How does the ADR380ARTZ-REEL7 handle line and load transients?

The ADR380ARTZ-REEL7 exhibits 20 μs turn-on settling time and fast transient response: Figures 17–21 show <100 μs recovery from 1 mA load steps with 0.1 μF output capacitance. Line transients (e.g., 1 V step on VIN) induce <10 mV VOUT perturbation with <50 μs recovery. These characteristics are enabled by internal compensation optimized for SOT-23 parasitics and validated across temperature.

Is the ADR380ARTZ-REEL7 RoHS compliant and what is its packaging format?

Yes, the ADR380ARTZ-REEL7 is RoHS compliant (indicated by the "Z" suffix) and supplied in tape-and-reel format (REEL7 = 3,000 units per reel). It uses a lead-free, halogen-free 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB, with branding "R2D" (or "R2A" for date codes prior to 0542). Moisture sensitivity level is MSL1, unlimited floor life at ≤30°C/60% RH.