Analog Devices Inc. ADM1816-R22ARTZ-RL

Overview

ADM1816-R22ARTZ-RL from Analog Devices is a precision low-voltage microprocessor reset circuit with active-low open-drain output and internal 5.5 kΩ pull-up resistor, designed for monitoring 2.5 V supplies. It features a typical reset threshold of 2.18 V, 150 ms reset timeout, −40°C to +105°C operating range, and SOT-23-3 package-used in industrial controllers to ensure safe power-on initialization.

For engineers reviewing the ADM1816-R22ARTZ-RL datasheet, ADM1816-R22ARTZ-RL pinout, ADM1816-R22ARTZ-RL application, or ADM1816-R22ARTZ-RL equivalent, key selection criteria include trip point tolerance (±1.5% typical), supply current (≤10 µA at 3.6 V), reset delay accuracy (±33% over temperature), and compatibility with manual reset push-button circuits.

Technical Context

The ADM1816-R22ARTZ-RL implements a bandgap-based voltage reference with comparator hysteresis and a fixed 150 ms power-up reset timer. Its internal pull-up resistor eliminates external components when interfacing with standard CMOS reset inputs.

It operates across full industrial temperature range (−40°C to +105°C) with supply voltage from 1.2 V to 5.5 V, and guarantees reset assertion during VCC fall below 2.12 V (min) and release only after VCC rises above 2.25 V (max), ensuring robust brownout immunity.

Key Specifications

Pinout & Package

ADM1816-R22ARTZ-RL is housed in a RoHS-compliant 3-lead SOT-23 (RT-3) package, measuring 2.90 mm × 1.30 mm × 1.02 mm, with gull-wing leads and JEDEC TO-236-AB compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD2T-T and TPS3808G12DBVR, ADM1816-R22ARTZ-RL delivers tighter threshold accuracy (±1.5% vs. ±2.5%), integrated pull-up (reducing component count), and optimized 150 ms timeout for standard microprocessor boot sequences-making it ideal for cost-sensitive, space-constrained industrial controllers.

Availability

ADM1816-R22ARTZ-RL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical patient monitors, and smart energy meters requiring stable component supply and long-term production continuity.

Supply support for ADM1816-R22ARTZ-RL 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.

The ADM181x series was developed specifically for cost-sensitive, space-constrained microprocessor reset supervision in industrial, automotive, and computing applications-emphasizing low quiescent current, fixed timing, and simplified open-drain interface.

FAQ

What is the exact reset threshold voltage for ADM1816-R22ARTZ-RL?

The ADM1816-R22ARTZ-RL has a typical reset threshold of 2.18 V, with minimum and maximum values of 2.12 V and 2.25 V respectively across −40°C to +105°C. This is specified in Table 1 of the Rev. F datasheet under "VCC TRIP POINT" for model ADM1816-R22. The part is optimized for reliable supervision of 2.5 V power rails.

Does ADM1816-R22ARTZ-RL require an external pull-up resistor?

No, ADM1816-R22ARTZ-RL does not require an external pull-up resistor. It integrates a 5.5 kΩ internal pull-up on the RST pin, enabling direct connection to standard CMOS reset inputs. This feature is explicitly documented in Table 1 ("INTERNAL PULL-UP RESISTOR") and confirmed in the ADM1811/ADM1816 functional description section.

What package type and dimensions does ADM1816-R22ARTZ-RL use?

ADM1816-R22ARTZ-RL uses the 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB. Its dimensions are 2.90 mm × 1.30 mm × 1.02 mm, with gull-wing leads and RoHS-compliant finish (indicated by the "Z" suffix). Package details are shown in Figure 15 and the Ordering Guide on page 9 of the Rev. F datasheet.

Can ADM1816-R22ARTZ-RL be used with a manual push-button reset?

No, ADM1816-R22ARTZ-RL does not support manual push-button reset functionality. That feature is exclusive to the ADM1813 and ADM1818 variants, as stated in the "ADM1813 AND ADM1818" section (page 7) and confirmed by omission in the ADM1816-specific functional description. ADM1816-R22ARTZ-RL provides only voltage-monitoring reset.

What is the supply current consumption of ADM1816-R22ARTZ-RL at 3.6 V?

At 3.6 V supply voltage and TA = −40°C to +105°C, ADM1816-R22ARTZ-RL consumes ≤10 µA (typical 4 µA) when VCC > VTH and no load is applied. This value is specified in Table 1 under "Current" and verified in Figure 4 ("Supply Current vs. Temperature") of the Rev. F datasheet.