ADM8691
ADM8691
LAST TIME BUYMicroprocessor Supervisory Circuit
- Part Models
- 3
- 1ku List Price
- Starting From $6.32
Viewing:
Overview
- High current drive: 100 mA
- Watchdog timer: 100 ms, 1.6 sec, or adjustable
- Standby current: 400 nA
- Automatic battery backup power switching
- Extremely fast gating of chip enable signals (3 ns)
- Voltage monitor for power fail
- Available in TSSOP package
The ADM8690 / ADM8691 / ADM8695 supervisory circuits offer complete single-chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include microprocessor reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.
The ADM8690 / ADM8691 / ADM8695 are fabricated using an advanced epitaxial CMOS process that combines low power consumption (0.7 mW), extremely fast chip enable gating (3 ns), and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. In addition, the power switching circuitry is designed for minimal voltage drop, thereby permitting increased output current drive of up to 100 mA without the need for an external pass transistor
PRODUCT HIGHLIGHTS
The ADM8690 is available in 8-lead PDIP and SOIC packages and provides the following functions:
- Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains operational with VCC as low as 1 V.
- Battery backup switching for CMOS RAM, CMOS microprocessor or other low power logic.
- A reset pulse if the optional watchdog timer has not been toggled within a specified time.
- A 1.3 V threshold detector for power fail warning, low battery detection or to monitor a power supply other than +5 V.
The ADM8691 and ADM8695 are available in 16-lead PDIP and small outline packages (including TSSOP) and provide three additional functions:
- Write protection of CMOS RAM or EEPROM.
- Adjustable reset and watchdog timeout periods.
- Separate watchdog timeout, backup battery switchover, and low VCC status outputs.
APPLICATIONS
- Microprocessor systems
- Computers
- Controllers
- Intelligent instruments
- Automotive systems
Documentation
Product Selection Guide 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADM8691ANZ | 16-Lead PDIP | ||
| ADM8691ARNZ | 16-Lead SOIC | ||
| ADM8691ARWZ | 16-Lead SOIC Wide |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 29, 2021 - 21_0033 Assembly Site Transfer for 14/16L 300_MIL PDIP to Cirtek |
||
| ADM8691ANZ | ||
|
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad |
||
| ADM8691ANZ | ||
|
Oct 5, 2010 - 10_0146 Halogen Free Material Change for 14/16L SOIC_N Products |
||
| ADM8691ARNZ | ||
|
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem |
||
| ADM8691ARWZ | ||
|
Jul 29, 2026 - 26_0046 Discontinuation of Parts Manufactured in TSMC Fab 2 and 5 in Hsinchu, Taiwan. |
||
| ADM8691ANZ | ||
| ADM8691ARNZ | ||
| ADM8691ARWZ | ||
This is the most up-to-date revision of the Data Sheet.