Analog Devices ADM6348
The ADM6326/ADM6328/ADM6346/ADM6348 devices provide low cost solutions for protecting sensitive circuitry, such as microprocessor and telecommunications circuitry. With built-in glitch immunity, ultralow supply currents, and 24 reset threshold voltage options, the ADM6326/ADM6328/ ADM6346/ADM6348 not only ensure that systems are immune to fast transients on VCC, but also that the devices are suitable for monitoring a variety of supply voltages in low power, portable equipment. These devices provide a reset output during power-up, powerdown, and brownout conditions.
| Part No. |
ADM6348 |
| Datasheet |
ADM6348
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| Manufacturer |
 Analog Devices |
| Description |
SOT-23 Microprocessor Reset Circuits |
| Buy |
Stock & Price
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FEATURES
Ultralow supply current of 1 μA maximum (ADM6326/ADM6328) Accurate monitoring of 2.5 V, 3 V, 3.3 V, and 5 V rails Reset thresholds available in increments from 2.2 V to 4.63 V Glitch immunity from negative-going VCC transients 2 reset output options Push-pull RESET (ADM6326/ADM6346) Open-drain RESET (ADM6328/ADM6348) Minimum reset timeout of 100 ms Operating temperature range of −40°C to +85°C 3-lead SOT-23 package FUNCTIONAL BLOCK DIAGRAMS ADM6326/ADM6346 VCC VREF RESET GENERATOR (100ms) RESET GND Figure 1. ADM6328/ADM6348 VCC VREF RESET GENERATOR (100ms) RESET APPLICATIONS
Telecommunications Microprocessor systems Desktop and notebook computers Portable equipment GND Figure 2. GENERAL DESCRIPTION
On power-up, an internal timer holds RESET asserted for at least 100 ms. This holds the microprocessor in a reset state until conditions have stabilized. The reset output remains operational with VCC as low as 1 V. The ADM6326 and ADM6346 have an active low push-pull reset output. The ADM6328 and ADM6348 have an active low opendrain reset output, which requires an external pull-up resistor.
