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Efficient and Tiny Power IC Products Extend Battery Life and Functionality >>
Reduce BOM Costs with DC-to-DC Boost Controller >>
Low Dropout Regulators Deliver Accuracy and Reliability >>
Thermal Management IC Simplifies Electronic System Designs >>
DC-to-DC Controller Delivers 14 V Input Range at a 40% Cost Saving >>
High Efficiency Step-Down DC-to-DC Converters >>
CPU Power Controllers Optimized for Next Generation Applications >>
High Efficiency Controller IC for Switch Mode Li-ion Battery Chargers >>
New Quad Channel Voltage Monitor/Sequencer for Communications Applications >>
Hot Swap with Integrated Digital Power Monitors Safeguard Line Cards >>
Dual Comparators with Integrated Reference and Programmable Hysterersis >>
Precise Temperature Control Independent of the Microprocessor >>
Low Voltage, High Accuracy Microprocessor Supervisory Circuit >>
All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.
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ADI Expands its Low Power Comparator Portfolio with Two New Dual Comparators with Integrated Reference and Programmable Hysteresis
 he ADCMP341/ADCMP343 ICs combine two low power, low voltage comparators with a 400 mV reference in a tiny 5-lead SOT-23 package. Operating within a supply range of 1.7 V to 5.5 V, the devices only draw 6.5 µA typical, making them ideal for low voltage system monitoring and portable applications. Hysteresis is determined using three resistors in a string configuration with the upper and lower tap points connected to the INA_U and INA_L pins of each comparator, respectively. The comparator's output internally selects which pin is connected to the comparator inputs. A change of state in the comparator output will result in one of the inputs being switched in to the comparator while the other is switched out. This functionality will provide the user with a fully flexible and simple method of setting the hysteresis. The comparator outputs are open-drain with the output stage sinking capability guaranteed greater than 5 mA over temperature. The IC family offers different features depending upon the design need—for example, the ADCMP341 has noninverting inputs and the ADCMP343 has inverting inputs. The devices are available in commercial, industrial, and automotive temperature ranges.
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• Low quiescent current: 6.5 µA typical
• Supply range: 1.7 V to 5.5 V
• 400 mV reference: ±0.275%
threshold accuracy
• Input range includes ground
• User programmable hysteresis via
resistor string
• Low input bias current: ±5 nA maximum
• Open-drain outputs
• Supports wired-AND connections
• Input polarities (non-inverting and
inverting)
• Small 8-lead SOT-23
Precise Temperature Control Independent of the Microprocessor
he ADT6501/ADT6502/ADT6503/ADT6504 are factory set trip point temperature switches available in 5-lead SOT-23 packages. When the temperature crosses the trip point setting, the logic output is activated. The ADT6501/ADT6503 offer an open-drain, active low output that could be used for microprocessor reset control. The ADT6502/ADT6504 logic output is active high and push-pull that could be used to turn on a fan if temperature gets too hot. These devices require no external components and typically consume 30 µA supply current. Hysteresis is pin-selectable at 2°C and 10°C.
| Part Number |
Trip Point Range |
Trip Point
Accuracy (°C) |
Trip Output |
Price ($U.S.) |
| ADT6501 |
35°C to 125°C |
4 to 6 |
Active-low, open-drain |
0.49 |
| ADT6502 |
35°C to 125°C |
4 to 6 |
Active-high, push-pull |
0.49 |
| ADT6503 |
–45°C to +15°C |
4 to 6 |
Active-low, open-drain |
0.49 |
| ADT6504 |
–45°C to +15°C |
4 to 6 |
Active-high, push-pull |
0.49 |
For a complete listing of ADI's temperature sensor product offerings, visit www.analog.com/tempsensor.
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