ZHCSL79D May 2020 – February 2023 TLV7031-Q1 , TLV7032-Q1 , TLV7034-Q1 , TLV7041-Q1 , TLV7042-Q1 , TLV7044-Q1
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information (Single)
- 6.5 Thermal Information (Dual)
- 6.6 Thermal Information (Quad)
- 6.7 Electrical Characteristics
- 6.8 Switching Characteristics
- 6.9 Electrical Characteristics (Dual)
- 6.10 Switching Characteristics (Dual)
- 6.11 Electrical Characteristics (Quad)
- 6.12 Switching Characteristics (Quad)
- 6.13 Timing Diagrams
- 6.14 Typical Characteristics
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
訂購信息
8.2.3.2 Detailed Design Procedure
The oscillation frequency is determined by the resistor and capacitor values. The following section provides details to calculate these component values.
Figure 8-8 Square-Wave Oscillator Timing ThresholdsFirst consider the output of figure GUID-451E23F9-7652-4DCB-A7B9-277D33095EB6.html#T4507364-2 is high, which indicates the inverted input VC is lower than the noninverting input (VA). This causes the C1 to be charged through R4, and the voltage VC increases until it is equal to the noninverting input. The value of VA at the point is calculated by #T4507364-11.
If R1 = R2= R3, then VA1 = 2 VCC/ 3
At this time the comparator output trips pulling down the output to the negative rail. The value of VA at this point is calculated by #T4507364-9.
If R1 = R2 = R3, then VA2 = VCC/3
The C1 now discharges though the R4, and the voltage VCC decreases until it reaches VA2. At this point, the output switches back to the starting state. The oscillation period equals the time duration from 2 VCC / 3 to VCC / 3 then back to 2 VCC / 3, which is given by R4C1 × ln2 for each trip. Therefore, the total time duration is calculated as 2 R4C1 × ln2. The oscillation frequency can be obtained by #T4507364-10:
