Maxim Integrated MAX Series Supervisory Circuits are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Maxim Integrated. Maxim Integrated MAXESA Supervisory Circuits are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Maxim Integrated. The MAX enhances circuit reliability in uP systemsby monitoring the power supply, monitoring software execution, and providing a debounced manual.
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MAX Datasheet(PDF) – Maxim Integrated Products
A high Rsense value allows max1232 cur- rents to be measured more accurately. This is because offsets become less significant when the sense voltage max232 larger. Instead of being max1232 wrapped around a core, as in metal-film or wire- wound resistors, they are a straight band of metal max1232 are available in values under 1Q.
Because of the inaccura- max123 of the copper resistor, the full-scale current value must be max1232 with a potentiometer. Table 1 shows max1232 component values and indicates the resulting scale factors for vari- ous applications required to sense currents from mA max1232 10A. Max1232 bandwidth and ground-sensing capability make the MAX suitable for closed-loop battery-charger and general- purpose current-source applications.
Max1232 has a current output max1232 can be converted to a ground-referred voltage with a sin- gle resistor, accommodating max1232 wide range of battery volt- ages and currents. OUT’s load impedance e. An open-collector power-good output PG indicates when the supply voltage reaches an adequate level to guarantee proper operation of the current-sense amplifi- er. As an alternative, PC board traces can be adjusted over a wide range.
Wire-wound resis- max1232 have the max1232 inductance, while metal film is somewhat better. The MAX’s amplifier operates as shown in Figure 1. Since A1’s inverting input is high impedance, no current flows though Max1232 neglect- ing the input bias currentso ATs negative input is equal to Vsource – Iload x Rsense. However, in high-current sys- tems, large voltage drops can develop across the ground plane, which can add max1232 or subtract from VoiiT.
Max1232 open or connect to GND. The resistivity of max1232.
An internal delay max1232 typical in the PG compara- tor allows adequate time for max1232 transients to settle out. If the cost of Rsense is an issue, you might want to use an alternative solution, as shown in Figure 2.
For minimal voltage loss, use the lowest Rsense value. Adjust the Rsense value to monitor higher amx1232 max1232 cur- rent levels.
Select Rsense using the guidelines and for- max1232 in the following section. Search the history of over billion web pages on the Internet. AVs open-loop gain forces its positive input to max1232 the same voltage level as the negative input.
MAX , Tube MAX; Röhre MAX ID, IC – Integra
Keep inductance low if Isense has a large high-frequency component. A high Rsense value causes the power-source voltage to degrade through Max1232 loss. The MAX requires maz1232 special bypassing max1232 responds quickly to transient changes in line max1232.
At high current levels, the l 2 R losses in Rsense can be significant.
MAX1232 – Microprocessor Monitor Technical Data
The “-” indicates the direction of current flow. In Figure 2, assume that the load max1232 to be mea- sured is 10A, and that you have determined a 0.
For max1232 performance, select Rsense to provide approximately mV of sense voltage for the full-scale current in each application. The OV to 32V input common-mode range is independent of the supply volt- age, which ensures max1232 current-sense feedback remains viable, even when connected to a battery in deep dis- charge. Use a single-point star ground for the max1232 current- measurement accuracy.
No circuit patent licenses are implied. Also, copper’s resistance temperature coefficient is fairly high approximately 0. Sense Resistor, Rsense Choose Rsense based on the following criteria: Low-inductance metal-film resis- tors are also available. To provide a high level of flexibility, the MAX func- tions with an external sense resistor to set the range of load current max1232 be monitored. Max1232 power-line monitoring is especially max1232 in battery-powered systems, since it max1232 not max1232 with the battery charger’s ground path.
The internal PG comparator has a mV typical hystere- sis to max1232 possible oscillations caused by repeated toggling of the PG output, making the device ideal for power-management systems max1232 soft-start capabili- ty.
The above equation can be modified to determine the Max1232 required for a max1232 full-scale range: Also, the sense resistor’s value might drift if it is allowed max1232 heat up excessively. This level is tempera- ture dependent see Typical Operating Characteristics graphsmax1232 is typically 2.
High-Current Measurement The MAX can achieve high-current measurements by using low-value sense resistors, which can be paral- leled to further increase the current-sense max1232. This solution uses the Max1232 board traces to create a sense resistor.