My Inquiry
My Account
Analog Devices Inc. ADM1816-R23AKSZ-R7
- Part No.:
- ADM1816-R23AKSZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1816-R23AKSZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,027
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM1816-R23AKSZ-R7 from Analog Devices is a precision 3-lead SC70-packaged microprocessor reset circuit with active-low open-drain output and internal 5.5 kΩ pull-up resistor, designed for monitoring 2.5 V supply rails. It features a typical reset threshold of 2.31 V, 150 ms reset timeout, −40°C to +105°C operating range, and supports safe power-on initialization in embedded controllers and automotive ECUs.
For engineers reviewing the ADM1816-R23AKSZ-R7 datasheet, ADM1816-R23AKSZ-R7 pinout, ADM1816-R23AKSZ-R7 application, or ADM1816-R23AKSZ-R7 equivalent, key selection criteria include reset threshold tolerance (±1.5% typical), low quiescent current (≤10 µA at 3.6 V), open-drain compatibility with I²C-bus logic levels, and SC70 footprint suitability for space-constrained PCB layouts.
Technical Context
The ADM1816-R23AKSZ-R7 implements a bandgap-based voltage reference with comparator hysteresis and a precision timing capacitor network to generate a fixed 150 ms reset assertion window after VCC rises above threshold. Its internal pull-up resistor eliminates external components required for open-drain bus interfacing.
This device belongs to the ADM181x family optimized for single-supply monitoring without external biasing - it draws only 4–10 µA across its full temperature range and maintains reset assertion during brownout conditions until VCC stabilizes above 2.31 V ±0.06 V (min/max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31 V typical (2.25 V min / 2.37 V max); ensures reliable detection of 2.5 V rail undervoltage before system corruption. |
| Reset Timeout | 150 ms typical (100–250 ms range); provides sufficient time for 2.5 V LDOs and PLLs to stabilize before processor release. |
| Supply Current | ≤10 µA at 3.6 V, −40°C to +105°C; enables always-on monitoring in battery-backed systems without significant drain. |
| Output Type | Active-low open-drain with 5.5 kΩ internal pull-up; interfaces directly with 1.8 V/2.5 V/3.3 V microcontroller reset inputs without external resistors. |
| Operating Temp | −40°C to +105°C; qualified for under-hood automotive and industrial control environments. |
| Package | SC70-3 (KS-3); 2.0 mm × 2.1 mm footprint with 0.65 mm pitch - compatible with high-density routing and reflow assembly. |
Pinout & Package
ADM1816-R23AKSZ-R7 is housed in a 3-lead SC70 package (JEDEC KS-3), with 0.65 mm lead pitch, 0.1 mm max lead thickness, and coplanarity ≤0.10 mm. Pin 1 = VCC, Pin 2 = GND, Pin 3 = RST (active-low open-drain output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Supply Input | Monitored 2.5 V rail input; powers internal reference and comparator; operates from 1.2 V to 5.5 V. |
| GND (Pin 2) | Ground Reference | 0 V return path for all internal circuitry; must be connected to system ground plane with low-impedance trace. |
| RST (Pin 3) | Reset Output | Active-low open-drain signal; sinks up to 8 mA when asserted; floats high via internal 5.5 kΩ pull-up when inactive. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Pull-Up Resistor | 5.5 kΩ ±20%; eliminates need for external pull-up on reset bus, reducing BOM count and layout area. |
| Precision Threshold Tolerance | ±1.5% over temperature; ensures consistent reset behavior across automotive and industrial thermal cycles. |
| Low-Power Operation | 4 µA typical at 3.6 V; extends battery life in always-on monitoring applications such as telematics and sensor nodes. |
| Fast Transient Immunity | Rejects <10 µs supply glitches; prevents spurious resets during switching noise or ESD events. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 2.5 V core supply powering ARM Cortex-M7 MCU and CAN transceiver in programmable logic controller. IC Role / Device Role / Timing Role: Voltage supervisor ensuring clean reset assertion during cold-cranking (9 V battery dip) and hot-restart sequences. Use Value: 150 ms timeout guarantees stable 2.5 V rail before releasing MCU reset, preventing firmware lockup during power recovery. | Use Scenario: Supervises 2.5 V supply feeding door module microcontroller and LIN transceiver in vehicle body electronics. IC Role / Device Role / Timing Role: Reset generator with guaranteed 2.31 V trip point to detect undervoltage during alternator load dump or battery disconnect. Use Value: Open-drain RST output interfaces natively with 2.5 V logic-level reset pins, eliminating level-shifter components. |
| Medical Patient Monitor | Smart Energy Meter |
Use Scenario: Ensures reliable boot sequence for 2.5 V FPGA configuration memory and ADC reference in portable diagnostic equipment. IC Role / Device Role / Timing Role: Power-on reset supervisor with −40°C to +105°C qualification meeting IEC 60601-1 ambient requirements. Use Value: 10 µA max supply current minimizes impact on backup coin-cell operation during main power loss. | Use Scenario: Monitors isolated 2.5 V auxiliary supply powering metrology SoC and RTC in utility-grade electricity meters. IC Role / Device Role / Timing Role: Brownout detector triggering controlled shutdown before EEPROM write corruption occurs. Use Value: Internal 5.5 kΩ pull-up enables direct connection to SoC reset pin without external resistor, saving board space in sealed meter housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G12DBVR | 2.5 V fixed threshold, 200 ms timeout, 1.8–6.5 V supply range, SOT-23-6 package | Requires external pull-up; higher quiescent current (12 µA typ); wider supply range but larger footprint | Select if longer timeout or wider input voltage range is needed; not drop-in due to 6-pin vs. 3-pin and different pinout. |
| MAX6326UR23+T | 2.32 V threshold, 140 ms timeout, 1.0–5.5 V supply, SOT-23-3 package, push-pull output | Push-pull output requires no pull-up but incompatible with wired-OR reset buses; slightly tighter threshold tolerance (±0.5%) | Choose for systems requiring active-high push-pull drive; not compatible with open-drain bus topologies without redesign. |
Compared with TPS3808G12DBVR and MAX6326UR23+T, the ADM1816-R23AKSZ-R7 offers optimal integration for 2.5 V rail supervision in SC70 space-constrained designs - its internal pull-up, 3-pin simplicity, and 2.31 V threshold deliver lower component count and proven reliability in automotive-grade thermal cycling.
Availability
ADM1816-R23AKSZ-R7 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 with RoHS-compliant packaging and extended temperature support.
Supply support for ADM1816-R23AKSZ-R7 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 product line was engineered specifically for cost-sensitive, space-constrained microprocessor reset applications - delivering precision voltage monitoring with minimal external components and robust operation across harsh environmental conditions.
FAQ
What is the exact reset threshold voltage of the ADM1816-R23AKSZ-R7?
The ADM1816-R23AKSZ-R7 has a specified reset threshold of 2.25 V (minimum), 2.31 V (typical), and 2.37 V (maximum) at −40°C to +105°C. This 2.31 V nominal point targets reliable supervision of 2.5 V power rails while allowing margin for supply tolerance and temperature drift.
Does the ADM1816-R23AKSZ-R7 require an external pull-up resistor on the RST pin?
No, the ADM1816-R23AKSZ-R7 includes an internal 5.5 kΩ pull-up resistor on the RST pin, enabling direct connection to microcontroller reset inputs without external components. This simplifies design and reduces PCB area in compact applications.
Can the ADM1816-R23AKSZ-R7 be used to monitor a 3.3 V supply?
No - the ADM1816-R23AKSZ-R7 is configured for 2.5 V rail supervision with a 2.31 V threshold. For 3.3 V monitoring, Analog Devices specifies the ADM1816-10 variant (2.88 V threshold) or ADM1816-5 (3.06 V threshold); using this part on 3.3 V would cause immediate, permanent reset assertion.
What is the operating temperature range supported by the ADM1816-R23AKSZ-R7?
The ADM1816-R23AKSZ-R7 is rated for continuous operation from −40°C to +105°C, making it suitable for under-hood automotive applications, industrial control cabinets, and outdoor metering equipment where wide thermal excursions occur.
Is the ADM1816-R23AKSZ-R7 pin-compatible with other devices in the ADM181x family?
Yes - all ADM181x SC70 variants, including ADM1816-R23AKSZ-R7, share identical 3-pin SC70 pinout (VCC, GND, RST). However, trip point, output polarity, and internal pull-up presence vary by suffix; electrical compatibility must be verified per application requirements.
ADM1816-R23AKSZ-R7 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-R23AKSZ-R7 FAQ
1.How can I place an order for ADM1816-R23AKSZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1816-R23AKSZ-R7 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-R23AKSZ-R7 reliable?
The price and inventory of ADM1816-R23AKSZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1816-R23AKSZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM1816-R23AKSZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1816-R23AKSZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1816-R23AKSZ-R7?
ADM1816-R23AKSZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1816-R23AKSZ-R7 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-R23AKSZ-R7?
For technical support, including ADM1816-R23AKSZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1816-R23AKSZ-R7 requirements.
6.How does Aetrix verify that ADM1816-R23AKSZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM1816-R23AKSZ-R7 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-R23AKSZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM1816-R23AKSZ-R7?
All ADM1816-R23AKSZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1816-R23AKSZ-R7, 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-R23AKSZ-R7 part is unused and in its original packaging.
Return procedure for ADM1816-R23AKSZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM1816-R23AKSZ-R7 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
