 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MAX9633 Datasheet(PDF) 10 Page - Maxim Integrated Products |
|
||||||||||||||||||||||||||||||
MAX9633 Datasheet(HTML) 10 Page - Maxim Integrated Products |
|
|
10 / 12 page  10 Maxim Integrated Dual 36V Op Amp for 18-Bit SAR ADC Front-End MAX9633 Input Common Mode and Output Swing The IC’s input common-mode range as well as the out- put range can swing to the negative rail VEE. These two features are very important for applications where the MAX9633 is used with a single supply (VEE connected to ground). In such a case, being able to swing the input common-mode to the negative rail offers ground-sensing capability. Input Differential Voltage Protection During normal op-amp operation, the inverting and non- inverting inputs of the IC are at essentially the same volt- age. However, either due to fast input voltage transients or due to other fault conditions, these pins can be forced to be at two different voltages. Internal back-to-back diodes protect the inputs from an excessive differential voltage (Figure 1). Therefore, IN+ and IN- can be any voltage within the range shown in the Absolute Maximum Ratings. Note the protection time is still dependent on the package thermal limits. If the input signal is fast enough to create the internal diode’s forward bias condition (0.7), the input signal cur- rent must be limited to 20mA or less. If the input signal current is not inherently limited, an external input series resistor can be used to limit the signal input current. Care should be taken in choosing the input series resis- tor value, since it degrades the low-noise performance of the device. Electrostatic Discharge (ESD) The IC has built-in circuits to protect from electrostatic discharge (ESD) events. An ESD event produces a short, high-voltage pulse that is transformed into a short current pulse once it discharges through the device. The built-in protection circuit provides a current path around the op amp that prevents it from being damaged. The energy absorbed by the protection circuit is dissipated as heat. ESD protection is guaranteed up to 5kV with the Human Body Model (HBM). The Human Body Model simulates the ESD phenomenon wherein a charged body directly transfers its accumu- lated electrostatic charge to the ESD-sensitive device. A common example of this phenomenon is when a person accumulates static charge by walking across a carpet and then transfers all of the charge to an ESD-sensitive device by touching it. Power Supplies and Layout The IC can operate with dual supplies from Q2.25V to Q18V or with a single supply from +4.5V to +36V with respect to ground. When used with dual supplies, bypass both VCC and VEE with their own 0.1FF capaci- tor to ground. When used with a single supply, bypass VCC with a 0.1FF capacitor to ground. Careful layout technique helps optimize performance by decreasing the amount of stray capacitance at the op amp’s inputs and outputs. To decrease stray capacitance, minimize trace lengths by placing external components close to the op amp’s pins. For high-frequency designs, ground vias are critical to provide a ground return path for high-frequency signals and should be placed around the signal traces and near the decoupling capacitors. Signal routing should be short and direct to avoid parasitic effects. Avoid using right angle connectors since they may introduce a capacitive discontinuity and ultimately limit the fre- quency response. Chip Information PROCESS: BiCMOS Figure 1. Input Protection Circuit |
Similar Part No. - MAX9633 |
|
Similar Description - MAX9633 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
