- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67330 > TLC1542MFKB (TEXAS INSTRUMENTS INC) 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CQCC20 PDF資料下載
參數(shù)資料
| 型號(hào)： | TLC1542MFKB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 11/32頁 |
| 文件大?。?/td> | 770K |
| 代理商： | TLC1542MFKB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
www.ti.com
SIMPLIFIED ANALOG INPUT ANALYSIS
VC = VS 1e
t c/RtCi
(
)
where
Rt = Rs + ri
(1)
VC (1/2 LSB) = VS (VS/2048)
(2)
VS (VS/2048) = VS 1e
(
)
t c/RtCi
and
tc (1/2 LSB) = Rt × Ci × ln(2048)
(3)
tc (1/2 LSB) = (Rs + 1 k) × 60 pF × ln(2048)
(4)
Rs
ri
VS
VC
1 k
MAX
Driving Source
TLC1542/3
Ci
50 pF MAX
VI
VI = Input Voltage at A0A10
VS = External Driving Source Voltage
Rs = Source Resistance
ri = Input Resistance
Ci = Equivalent Input Capacitance
Driving source requirements:
Noise and distortion for the source must be equivalent to the
resolution of the converter.
Rs must be real at the input frequency.
SLAS052G – MARCH 1992 – REVISED JANUARY 2006
APPLICATION INFORMATION (continued)
Using the equivalent circuit in Figure 17Figure 17, the time required to charge the analog input capacitance from
0 to VS within 1/2 LSB can be derived as follows:
The capacitance charging voltage is given by
The final voltage to 1/2 LSB is given by
Equating equation 1 to equation 2 and solving for time tc gives
Therefore, with the values given the time for the analog input signal to settle is
This time must be less than the converter sample time shown in the timing diagrams.
Figure 17. Equivalent Input Circuit Including the Driving Source
19
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLC1543IDBLE | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| TLC1543IDW | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| TLC1542CNE4 | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20 |
| TLC1542IDWG4 | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| TLC1543CFN | 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLC1542MJ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
| TLC1542MJB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
| TLC1542Q | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
| TLC1542QDB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
| TLC1542QDW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。