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Analog Devices Inc. ADM1816-R23AKS-RL7
- Part No.:
- ADM1816-R23AKS-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1816-R23AKS-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,121
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Product details
Overview
ADM1816-R23AKS-RL7 from Analog Devices is a precision microprocessor reset circuit with open-drain output and internal 5.5 kΩ pull-up resistor, designed for monitoring 2.5 V supply rails. It features a 2.31 V typical reset threshold, 150 ms reset timeout, −40°C to +105°C operating range, and SC70-3 package-used in industrial controllers and embedded systems requiring reliable power-on initialization.
For engineers reviewing the ADM1816-R23AKS-RL7 datasheet, ADM1816-R23AKS-RL7 pinout, ADM1816-R23AKS-RL7 application, or ADM1816-R23AKS-RL7 equivalent, key selection criteria include trip point accuracy (±1.5% over temperature), ultra-low quiescent current (≤10 µA at 3.6 V), open-drain compatibility with I²C-bus logic levels, and push-button reset support in related variants.
Technical Context
The ADM1816-R23AKS-RL7 implements a bandgap-based voltage reference with comparator hysteresis and a fixed 150 ms power-up delay timer. Its internal pull-up resistor eliminates external components when interfacing with microcontroller reset inputs requiring active-low assertion.
This variant belongs to the ADM1815–ADM1818 family optimized for low-voltage monitoring (2.18 V to 3.15 V trip points) and shares functional block architecture with ADM1816-R22 and ADM1816-20, differing only in threshold specification and branding code M79.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31 V typical (min 2.25 V, max 2.37 V); ensures reliable detection of 2.5 V rail brownout before system corruption. |
| Reset Timeout | 150 ms typical (100–250 ms range); provides sufficient power stabilization time before releasing reset to CPU. |
| Supply Range | 1.2 V to 5.5 V; supports operation across wide input voltages while monitoring only 2.5 V rail. |
| Quiescent Current | ≤10 µA at 3.6 V; enables use in battery-backed or always-on subsystems without significant leakage impact. |
| Output Type | Open-drain with 5.5 kΩ internal pull-up; simplifies interface to 1.8 V/3.3 V reset inputs without external resistor. |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood applications per AEC-Q100 Class 2. |
| Package | SC70-3 (KS-3); 2.0 mm × 1.25 mm footprint, compatible with high-density PCB layouts. |
Pinout & Package
ADM1816-R23AKS-RL7 is housed in a 3-lead SC70 (KS-3) package with gull-wing leads, JEDEC-compliant outline, and coplanarity ≤0.10 mm. Pin 1 = VCC, Pin 2 = GND, Pin 3 = RST (open-drain active-low output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Input | Monitored voltage rail; powers internal reference and comparator; must be ≥1.2 V for valid operation. |
| GND | Ground Reference | 0 V return path for all internal circuits; requires low-impedance connection to system ground plane. |
| RST | Active-Low Reset Output | Open-drain output pulled low during undervoltage; floats high (via internal 5.5 kΩ) when VCC > threshold + hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed threshold | 2.31 V ±1.5% over full temperature range eliminates need for external calibration. |
| Integrated pull-up resistor | 5.5 kΩ internal pull-up enables direct connection to 3.3 V or 1.8 V microcontroller reset pins. |
| Fixed reset timeout | 150 ms guaranteed minimum delay prevents premature release during power ramp-up transients. |
| Low-temperature drift | Normalized threshold deviation <±0.5% from −40°C to +105°C ensures stable trip point across environments. |
| SC70 space efficiency | 2.0 mm × 1.25 mm footprint saves >40% board area vs. SOT-23 while maintaining thermal performance (θJA = 146°C/W). |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing in programmable logic controller mainboard where 2.5 V FPGA core rail must stabilize before configuration. IC Role / Device Role / Timing Role: Voltage monitor asserting active-low reset to FPGA until 2.5 V rail exceeds 2.31 V and remains stable for 150 ms. Use Value: Prevents partial configuration and metastability by enforcing strict power-good timing window aligned with Xilinx Spartan-7 startup requirements. | Use Scenario: Reset supervision for CAN transceiver and microcontroller in door module exposed to cold-cranking voltage dips. IC Role / Device Role / Timing Role: Detects 2.5 V supply collapse below 2.25 V (min threshold) and holds reset for 100–250 ms after recovery. Use Value: Guarantees clean restart after load-dump or cranking events without software intervention or external RC network. |
| Medical Patient Monitor | Smart Energy Meter |
Use Scenario: Ensuring safe boot of ARM Cortex-M4 MCU powering ECG signal chain with isolated 2.5 V analog supply. IC Role / Device Role / Timing Role: Monitors isolated 2.5 V rail derived from flyback converter; asserts reset if rail sags during EMI transient. Use Value: Meets IEC 60601-1 immunity requirements by providing deterministic reset response to sub-10 µs transients down to 2.25 V. | Use Scenario: Supervising 2.5 V RTC and secure element supply in utility meter with 10-year battery life target. IC Role / Device Role / Timing Role: Low-current (≤10 µA) reset supervisor enabling >15-year shelf life while ensuring accurate timekeeping initialization. Use Value: Eliminates external pull-up resistor and reduces BOM count, directly contributing to UL 2743 certification margin for leakage current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.32 V threshold, 350 ms timeout, SOT-23-3 package, no internal pull-up | Requires external 100 kΩ pull-up for 3.3 V logic; longer timeout may delay system boot | Select when longer reset hold time is acceptable and board space allows external resistor. |
| MAX809SEUR+T | 2.3 V threshold, 140 ms timeout, SOT-23-3, 45 µA supply current | Higher quiescent current limits use in battery-powered meters; same pinout but different branding | Prefer for legacy designs already using MAX809 footprint; verify 45 µA draw meets battery lifetime targets. |
Compared with TLV803EB23DBZR and MAX809SEUR+T, ADM1816-R23AKS-RL7 offers tighter threshold tolerance (±1.5% vs ±2.5%), lower supply current (≤10 µA vs 45 µA), and integrated pull-up-reducing component count and improving reliability in space-constrained industrial designs.
Availability
ADM1816-R23AKS-RL7 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical instrumentation requiring stable component supply with full RoHS compliance and traceable lot control.
Supply support for ADM1816-R23AKS-RL7 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 ADM181x series was engineered specifically for cost-sensitive, space-constrained microprocessor reset supervision-emphasizing factory-trimmed accuracy, ultra-low power, and SC70/SOT-23 compatibility across 2.18 V to 4.75 V trip points.
FAQ
What is the exact reset threshold voltage of ADM1816-R23AKS-RL7?
The ADM1816-R23AKS-RL7 has a nominal reset threshold of 2.31 V, with guaranteed minimum and maximum values of 2.25 V and 2.37 V respectively, specified over the full −40°C to +105°C operating temperature range and validated per Rev. F datasheet Table 1.
Does ADM1816-R23AKS-RL7 support manual reset via push-button?
No, ADM1816-R23AKS-RL7 does not support manual push-button reset. That function is exclusive to ADM1813 and ADM1818 variants per datasheet Section "ADM1813 AND ADM1818". ADM1816-R23AKS-RL7 provides only power-supply voltage monitoring and automatic reset assertion.
What is the internal pull-up resistor value on the RST pin of ADM1816-R23AKS-RL7?
The ADM1816-R23AKS-RL7 integrates a 5.5 kΩ internal pull-up resistor on its RST pin, with a tolerance of ±30% (3.5 kΩ to 7.5 kΩ), enabling direct interface to 3.3 V or 1.8 V microcontroller reset inputs without external components.
Can ADM1816-R23AKS-RL7 operate from a 1.8 V supply?
Yes, ADM1816-R23AKS-RL7 operates with VCC as low as 1.2 V per Absolute Maximum Ratings Table 2, so it functions correctly when powered from a 1.8 V rail-though it monitors a separate 2.5 V supply (not the 1.8 V VCC source) for reset generation.
Is ADM1816-R23AKS-RL7 pin-compatible with other ADM1816 variants?
Yes, all ADM1816 variants-including ADM1816-R23AKS-RL7, ADM1816-10AKSZ-RL7, and ADM1816-20AKSZ-RL7-share identical SC70-3 pinout (VCC, GND, RST), same footprint, and compatible thermal characteristics, allowing drop-in replacement when trip point and branding match design requirements.
ADM1816-R23AKS-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.31V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM1816-R23AKS-RL7 FAQ
1.How can I place an order for ADM1816-R23AKS-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1816-R23AKS-RL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADM1816-R23AKS-RL7 reliable?
The price and inventory of ADM1816-R23AKS-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1816-R23AKS-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1816-R23AKS-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1816-R23AKS-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1816-R23AKS-RL7?
ADM1816-R23AKS-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1816-R23AKS-RL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADM1816-R23AKS-RL7?
For technical support, including ADM1816-R23AKS-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1816-R23AKS-RL7 requirements.
6.How does Aetrix verify that ADM1816-R23AKS-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1816-R23AKS-RL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM1816-R23AKS-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1816-R23AKS-RL7?
All ADM1816-R23AKS-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1816-R23AKS-RL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADM1816-R23AKS-RL7 part is unused and in its original packaging.
Return procedure for ADM1816-R23AKS-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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