поискавой системы для электроныых деталей |
|
ISL59831 датащи(PDF) 10 Page - Intersil Corporation |
|
ISL59831 датащи(HTML) 10 Page - Intersil Corporation |
10 / 11 page 10 FN6266.0 March 29, 2007 GND will disable the amplifier. The amplifier will be enabled when the signal at ENABLE pin is 2V above GND. Output Drive Capability The maximum output current for the ISL59831 is set at ±50mA. Maximum reliability is maintained if the output current never exceeds ±50mA, after which the electro- migration limit of the process will be exceeded and the part will be damaged. This limit is set by the design of the internal metal interconnections. Power Dissipation With the high output drive capability of the ISL59831, it is possible to exceed the +150°C absolute maximum junction temperature under certain load current conditions. Therefore, it is important to calculate the maximum junction temperature for an application to determine if load conditions or package types need to be modified to assure operation of the amplifier in a safe operating area. The maximum power dissipation allowed in a package is determined according to Equation 1: Where: TJMAX = Maximum junction temperature TAMAX = Maximum ambient temperature ΘJA = Thermal resistance of the package The maximum power dissipation actually produced by an IC is the total quiescent supply current times the total power supply voltage, plus the power in the IC due to the load, or: for sourcing: for sinking: Where: VS = Supply voltage ISMAX = Maximum quiescent supply current VOUT = Maximum output voltage of the application RLOAD = Load resistance tied to ground ILOAD = Load current i = Number of output channels By setting the two PDMAX equations equal to each other, we can solve the output current and RLOAD to avoid the device overheat. Power Supply Bypassing and Printed Circuit Board Layout Strip line design techniques are recommended for the input and output signal traces. As with any high frequency device, a good printed circuit board layout is necessary for optimum performance. Lead lengths should be as short as possible. The power supply pin must be well bypassed to reduce the risk of oscillation. For normal single supply operation, a single 4.7µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor from VCC and VCP to GND will suffice. For good AC performance, parasitic capacitance should be kept to a minimum. Use of wire-wound resistors should be avoided because of their additional series inductance. Use of sockets should also be avoided if possible. Sockets add parasitic inductance and capacitance can result in compromised performance. Minimizing parasitic capacitance at the amplifier's inverting input pin is also very important. PD MAX T JMAX T AMAX – Θ JA --------------------------------------------- = (EQ. 1) PD MAX V S I SMAX V S V OUTi – () + × V OUT i R Li ----------------- × = (EQ. 2) PD MAX V S I SMAX V OUTiVS – () + × I LOAD i × = (EQ. 3) ISL59831 |
Аналогичный номер детали - ISL59831 |
|
Аналогичное описание - ISL59831 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |