Analog Devices Inc. ADM810RAKS-REEL7

Overview

ADM810RAKS-REEL7 from Analog Devices is a microprocessor supervisory circuit with active-high push-pull RESET output, 2.63 V reset threshold, and operation down to 1.0 V VCC. It provides 240 ms (typical) power-on reset timeout, consumes 17 μA typical supply current, and is qualified for −40°C to +125°C industrial/automotive environments. It monitors 3 V rail integrity in embedded controllers and intelligent instruments.

For engineers reviewing the ADM810RAKS-REEL7 datasheet, ADM810RAKS-REEL7 pinout, ADM810RAKS-REEL7 application, or ADM810RAKS-REEL7 equivalent, key selection criteria include reset polarity (active-high), SC70-3 package compatibility, guaranteed operation at VCC ≥ 1.0 V, and temperature-stable 2.63 V threshold with ±45 mV tolerance over −40°C to +125°C.

Technical Context

The ADM810RAKS-REEL7 integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms reset timer. Its reference circuit maintains stable threshold accuracy across temperature, with 30 ppm/°C tempco and ±45 mV total variation over full operating range.

It features push-pull output capable of sourcing 150 μA at 1.8 V < VCC < VTH(min), sinking 1.2 mA at VTH(min), and operates continuously as VCC drops to 1.0 V - enabling reliable brownout detection before system collapse.

Key Specifications

Pinout & Package

ADM810RAKS-REEL7 uses a 3-lead SC70 (KS-3) package with 0.65 mm pitch, 0.10 mm coplanarity, and JEDEC-compliant dimensions (2.20 mm × 1.35 mm × 0.95 mm height). Pin 1 = VCC, Pin 2 = RESET (active-high), Pin 3 = GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Compared with MAX809RTR and TPS3808G12DBVR, ADM810RAKS-REEL7 delivers fixed 2.63 V accuracy with no external components, full −40°C to +125°C qualification, and SC70-3 space savings - making it optimal for thermally demanding, high-density embedded systems requiring plug-and-play reliability.

Availability

ADM810RAKS-REEL7 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 across extended temperature ranges and long production lifecycles.

Supply support for ADM810RAKS-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 since 1965.

The ADM810RAKS-REEL7 belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for robust power-monitoring in harsh-environment embedded systems where deterministic reset behavior and long-term parametric stability are critical.

FAQ

What is the reset polarity and output structure of ADM810RAKS-REEL7?

The ADM810RAKS-REEL7 features an active-high push-pull RESET output. Unlike open-drain variants (e.g., ADM803), it does not require an external pull-up resistor. When VCC is below 2.63 V, RESET is driven low; once VCC exceeds the threshold, RESET transitions high and remains high for 240 ms (typical) to ensure stable power-up sequencing. This behavior is confirmed in the Functional Block Diagram and Pin Function Descriptions of the ADM803/ADM809/ADM810 datasheet Rev. I.

Does ADM810RAKS-REEL7 support operation below 2.0 V VCC?

Yes, ADM810RAKS-REEL7 is fully specified to operate down to VCC = 1.0 V. Its reset comparator remains functional and asserts RESET (low) until VCC rises above 2.63 V, and the internal timer continues timing even at 1.0 V. This capability is explicitly stated in the General Description ("reset output remains operational with VCC as low as 1 V") and verified in Table 1 under "VCC OPERATING VOLTAGE RANGE" for −40°C to +125°C.

What package type and dimensions does ADM810RAKS-REEL7 use?

ADM810RAKS-REEL7 is packaged in a 3-lead SC70 (JEDEC KS-3), measuring 2.20 mm × 1.35 mm × 0.95 mm with 0.65 mm lead pitch. Its outline conforms to EIAJ SC70 standards and is documented in Figure 15 of the datasheet. This package offers ~50% smaller footprint than equivalent SOT-23-3 devices while maintaining identical pin numbering (VCC–RESET–GND).

How accurate is the 2.63 V reset threshold over temperature for ADM810RAKS-REEL7?

The ADM810RAKS-REEL7 has a nominal reset threshold of 2.63 V with ±45 mV total variation over −40°C to +125°C, as shown in Table 1 for the "ADM8xxR" variant. Its temperature coefficient is 30 ppm/°C, contributing to predictable drift. This accuracy is validated across all production lots and is tighter than many competing supervisors rated only over 0°C to +70°C.

Can ADM810RAKS-REEL7 replace ADM809RAKSZ-REEL7 in an existing design?

No - ADM810RAKS-REEL7 and ADM809RAKSZ-REEL7 have opposite reset polarities: ADM810 outputs active-high RESET, while ADM809 outputs active-low. Swapping them without circuit modification would invert reset logic and likely prevent proper system boot. The datasheet explicitly states "ADM809 provides an active low reset signal… ADM810 provides an active high signal." Pin compatibility does not imply functional interchangeability.