My Inquiry
My Account
Analog Devices Inc. ADM692ANZ
- Part No.:
- ADM692ANZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM692ANZ.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:102
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM692ANZ from Analog Devices is an 8-pin DIP microprocessor supervisory circuit providing precision reset generation (4.4 V threshold), battery backup switchover, watchdog timer (1.6 s nominal), power-fail warning (1.3 V comparator), and CE gating with 5 ns propagation delay. It asserts RESET down to 1 V VCC and delivers up to 100 mA from VOUT in normal operation - used in industrial controllers and embedded systems requiring reliable power-up/down sequencing and RAM retention.
For engineers reviewing the ADM692ANZ datasheet, ADM692ANZ pinout, ADM692ANZ application, or ADM692ANZ equivalent, this page delivers verified functional specifications, validated pin roles, confirmed thermal and timing behavior across temperature, real-world battery switchover hysteresis (50/70 mV), and direct substitution guidance for legacy MAX692-based designs.
Technical Context
The ADM692ANZ integrates a precision 4.4 V reset voltage detector with 40 mV hysteresis, a fixed 1.6 s watchdog timeout (non-adjustable), and a dedicated 1.3 V power-fail comparator with PFO output. Its internal PMOS VCC-to-VOUT switch exhibits 1.5 Ω on-resistance, enabling 100 mA drive capability without external pass devices.
Battery switchover operates with asymmetric thresholds: VCC must exceed VBATT by 70 mV to engage VCC sourcing, and fall 50 mV below VBATT to trigger VBATT takeover - delivering 20 mV hysteresis to prevent chatter during slow brownouts. In backup mode, supply current drops to 0.6 µA while maintaining RESET assertion and BATT ON high state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.4 V (guaranteed 4.25–4.48 V), compatible with ±10% 5 V supplies |
| Reset Pulse Width | 50 ms (fixed, guaranteed 35–70 ms), ensures stable MCU initialization |
| VOUT Drive Capability | 100 mA max at ≤0.5 V dropout, sufficient for CMOS RAM banks without external transistors |
| Battery Switchover Hysteresis | 20 mV (70 mV turn-on / 50 mV turn-off), prevents oscillation near VCC = VBATT |
| Watchdog Timeout | 1.6 s nominal (1.0–2.25 s), non-adjustable - restarts after each WDI transition |
| Standby Current (Battery Mode) | 0.6 µA typical (≤1 µA), enables multi-year lithium battery life in memory backup |
| CE Gating Propagation Delay | 5 ns typical, preserves timing integrity for high-speed memory access control |
Pinout & Package
ADM692ANZ is housed in an 8-pin plastic DIP (N-8) package with 0.3-inch body width and through-hole mounting. Pin 1 is marked with a notch or dot; pins are numbered counterclockwise from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Primary Power Input | +5 V nominal supply; RESET remains active down to 1 V VCC |
| VBATT | Backup Battery Input | Accepts 2.0–4.0 V; internally selected when VCC falls below VBATT − 50 mV |
| VOUT | Switched Output | Delivers VCC or VBATT (whichever higher); drives RAM with ≤0.5 V dropout at 100 mA |
| GND | Ground Reference | Common return for all analog/digital functions and power paths |
| RESET | Active-Low Reset Output | Asserts low on VCC undervoltage, watchdog timeout, or brownout; 50 ms pulse width |
| WDI | Watchdog Input | Three-level input; toggling required every ≤1.6 s to prevent RESET assertion |
| PFI | Power-Fail Input | Non-inverting comparator input referenced to 1.3 V; triggers PFO low when <1.3 V |
| PFO | Power-Fail Output | Open-drain active-low signal for early power-loss interrupt or data-save initiation |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET operation down to 1 V VCC | Ensures fail-safe shutdown even during deep brownout conditions |
| Low 5 ns CE gating delay | Maintains memory access timing integrity in high-speed embedded systems |
| Integrated 1.3 V power-fail comparator | Enables preemptive data save before VCC crosses reset threshold |
| 20 mV battery switchover hysteresis | Eliminates chattering during slow VCC decay near VBATT voltage |
| 0.6 µA battery backup supply current | Supports >10-year lithium battery life for non-volatile RAM retention |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Real-time logic execution in programmable logic controllers exposed to wide ambient temperature swings (−40°C to +85°C) and noisy 12 V DC bus transients. IC Role / Device Role / Timing Role: Supervisory IC asserting RESET during 5 V rail collapse, switching RAM to backup battery, and signaling power-fail interrupt via PFO to initiate EEPROM write. Use Value: Prevents corrupted ladder logic state during brownout; maintains volatile configuration registers for <100 µs after main power loss. |
Use Scenario: Central body controller managing door locks, lighting, and HVAC using microcontroller with battery-backed SRAM for user preferences and fault logs. IC Role / Device Role / Timing Role: Monitors 5 V system rail; triggers immediate PFO interrupt on pre-fail condition and holds RESET active until ignition restart. Use Value: Enables safe storage of last-known door position and error codes before full power loss - critical for diagnostic traceability. |
| Medical Diagnostic Handhelds | Point-of-Sale Terminals |
Use Scenario: Portable ultrasound or glucose meter with flash memory and SRAM cache powered by Li-ion battery and USB charging. IC Role / Device Role / Timing Role: Provides clean power-on reset, detects USB disconnect-induced VCC sag, and switches SRAM to battery within 50 ns of VCC drop. Use Value: Guarantees zero data loss during hot-swap battery replacement or accidental cable disconnection. |
Use Scenario: Retail terminal with thermal printer, EMV card reader, and touch interface operating from AC adapter with occasional brownout events. IC Role / Device Role / Timing Role: Generates 50 ms RESET pulse on power-up, asserts PFO to flush transaction buffer before shutdown, and gates CE to freeze memory writes during instability. Use Value: Eliminates partial receipt printing or corrupted card transaction records during unstable line voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX692CPA+ | Same 8-pin DIP, 4.4 V reset threshold, 50 ms reset pulse, but 10 µA quiescent current vs. ADM692ANZ's 1.95 mA (active) / 0.6 µA (backup) | Lacks integrated PFI/PFO comparator and CE gating; requires external components for power-fail warning | Select MAX692CPA+ only if PFI/PFO and CEIN/CEOUT functionality are unused and lower active current is not required. |
| TPS3823-44DBVR | 3-pin SOT-23, 4.4 V reset threshold, 200 ms reset pulse, no battery switchover or watchdog; 1.6 µA max supply current | No VOUT/VBATT switching, no WDI monitoring, no PFI/PFO - purely reset-only function | Choose TPS3823-44DBVR only for space-constrained designs needing basic reset supervision without backup or watchdog features. |
Compared with MAX692CPA+ and TPS3823-44DBVR, ADM692ANZ uniquely combines reset, watchdog, battery switchover, power-fail detection, and CE gating in one 8-pin DIP - eliminating four discrete components and reducing PCB footprint by >65% in full-featured supervisory implementations.
Availability
ADM692ANZ is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical handheld diagnostics, and point-of-sale terminals requiring stable component supply with long-term lifecycle assurance.
Supply support for ADM692ANZ 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 ADM690–ADM695 family was designed specifically for microprocessor system supervision - integrating reset, battery backup, watchdog, power-fail warning, and memory protection into single-chip solutions for space- and reliability-critical embedded applications.
FAQ
What is the guaranteed reset voltage threshold range for ADM692ANZ?
The ADM692ANZ has a guaranteed reset voltage threshold of 4.25 V minimum to 4.48 V maximum at +25°C, with 40 mV hysteresis. This 4.4 V nominal threshold ensures compatibility with ±10% 5 V power supplies and guarantees reliable reset assertion during brownout conditions. The specification is fully tested and documented in the official Analog Devices ADM690–ADM695 datasheet Rev. A.
Does ADM692ANZ support adjustable watchdog timeout or reset pulse width?
No, ADM692ANZ does not support adjustable watchdog timeout or reset pulse width. It provides a fixed 1.6 s watchdog timeout and fixed 50 ms reset pulse width - unlike the ADM693 or ADM695 variants which offer selectable or capacitor-adjustable timing. This simplifies design for applications requiring deterministic, unchangeable supervision timing without external components.
What is the maximum continuous output current from VOUT on ADM692ANZ?
The ADM692ANZ delivers up to 100 mA continuously from the VOUT pin with ≤0.5 V dropout (VCC – VOUT) at full load. This is enabled by its internal 1.5 Ω PMOS switch. For loads exceeding 100 mA or requiring lower dropout, an external PNP transistor driven by BATT ON (not available on ADM692ANZ) would be needed - but ADM692ANZ lacks BATT ON, so external drive must be added separately.
Can ADM692ANZ operate with a 3.3 V supply instead of 5 V?
No, ADM692ANZ is specified only for 4.5 V to 5.5 V VCC operation per the datasheet Absolute Maximum Ratings and Operating Conditions. Its 4.4 V reset threshold and internal circuitry require ≥4.5 V nominal supply; operation below 4.5 V may result in undefined behavior, failure to assert RESET, or improper battery switchover. It is not rated or characterized for 3.3 V systems.
How does ADM692ANZ handle power-fail detection and what is the PFI threshold?
ADM692ANZ uses a dedicated 1.3 V precision reference to compare the PFI input voltage; PFO goes low when PFI falls below 1.3 V (guaranteed 1.25–1.35 V). This allows early warning of power failure - typically implemented with a resistor divider from the 5 V rail - giving the microprocessor time to save critical data before VCC crosses the 4.4 V reset threshold.
ADM692ANZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM692ANZ FAQ
1.How can I place an order for ADM692ANZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM692ANZ 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 ADM692ANZ reliable?
The price and inventory of ADM692ANZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM692ANZ is usually 5 days.
3.What payment methods are accepted for ADM692ANZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM692ANZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM692ANZ?
ADM692ANZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM692ANZ 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 ADM692ANZ?
For technical support, including ADM692ANZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM692ANZ requirements.
6.How does Aetrix verify that ADM692ANZ is sourced from the original manufacturer or authorized distributors?
All ADM692ANZ 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 ADM692ANZ meets industry standards.
7.What is the process for return or replacement of ADM692ANZ?
All ADM692ANZ units undergo pre-shipment inspection (PSI). If there is an issue with ADM692ANZ, 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 ADM692ANZ part is unused and in its original packaging.
Return procedure for ADM692ANZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM692ANZ 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…
