ADM8691
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ADM8691

Microprocessor Supervisory Circuit

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 3
1ku List Price Starting From $4.99
Features
  • Upgrade for the ADM690, ADM691, ADM695 and for the MAX690, MAX691, MAX695
  • Specified over temperature
  • Low power consumption: 0.7 mW
  • Precision voltage monitor
  • Reset assertion down to 1 V VCC
  • Low switch on resistance: 0.7 Ω normal, 7 Ω in backup
  • 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
Additional Details
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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:

  1. Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains operational with VCC as low as 1 V.
  2. Battery backup switching for CMOS RAM, CMOS microprocessor or other low power logic.
  3. A reset pulse if the optional watchdog timer has not been toggled within a specified time.
  4. 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:

  1. Write protection of CMOS RAM or EEPROM.
  2. Adjustable reset and watchdog timeout periods.
  3. Separate watchdog timeout, backup battery switchover, and low VCC status outputs.

APPLICATIONS

  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Automotive systems
Part Models 3
1ku List Price Starting From $4.99

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADM8691ANZ
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ADM8691ARNZ
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ADM8691ARWZ
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Product Lifecycle

PCN

Mar 29, 2021

- 21_0033

Assembly Site Transfer for 14/16L 300_MIL PDIP to Cirtek

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

Oct 5, 2010

- 10_0146

Halogen Free Material Change for 14/16L SOIC_N Products

Aug 4, 2010

- 10_0117

Halogen Free Material Change for SOIC_W Products at Carsem

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Mar 29, 2021

- 21_0033

arrow down

Assembly Site Transfer for 14/16L 300_MIL PDIP to Cirtek

Aug 19, 2009

- 07_0024

arrow down

Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad

Oct 5, 2010

- 10_0146

arrow down

Halogen Free Material Change for 14/16L SOIC_N Products

Aug 4, 2010

- 10_0117

arrow down

Halogen Free Material Change for SOIC_W Products at Carsem

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