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參數資料
| 型號： | TLC3548CDW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24 |
| 封裝： | GREEN, PLASTIC, SOIC-24 |
| 文件頁數： | 21/44頁 |
| 文件大小： | 1000K |
| 代理商： | TLC3548CDW |
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TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C – OCTOBER 2000 – REVISED MAY 2003
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
conversion operation (continued)
CS
FS
SDI
INT
SDO
***
Command = Configure Write for Mode 11, FIFO
Threshold = 1/2 Full, Sweep Sequence: 0–0–2–2
**
COMMAND = Select Any Channel
*
COMMAND = Read FIFO
*
Configure
Conversion
From CH0
Conversion
From CH2
Conversion
From CH2
Conversion
From CH0
1st SWEEP
1st FIFO Read
REPEAT
2nd FIFO Read
CH0
CH2
CH0
Read FIFO After 1st SWEEP Completed
CSTART
*** **
**
*
***
*
Possible Signal
Don’t Care
Figure 20. Mode 11, CSTART Triggers Samplings/Conversions
conversion clock and conversion speed
The conversion clock source can be the internal OSC, or the external clock SCLK. When the external clock is
used, the conversion clock is equal to SCLK/4. It takes 18 conversion clocks plus 15 ns to finish the conversion.
If the external clock is selected, the conversion time (not including sampling time) is 18X(4/fSCLK)+15 ns. Table 4
shows the maximum conversion rate (including sampling time) when the analog input source resistor is 1 k
.
Table 4. Maximum Conversion Rate
DEVICE
SAMPLING MODE
CONVERSION CLK
MAX SCLK
(MHz)
CONVERSION
TIME (us)
RATE
(KSPS)
Short (16 SCLK)
External SCLK/4
10
8.815
113.4
TLC3544/48
Long (48 SCLK)
External SCLK/4
25
4.815
207.7
TLC3544/48
(Rs = 1000)
Short (16 SCLK)
Internal 6.5 MHz
10
4.385
228
()
Long (48 SCLK)
Internal 6.5 MHz
25
4.705
212.5
FIFO operation
76543210
ADC
×8
FIFO
SOD
Serial
FIFO Full
FIFO 3/4 Full
FIFO 1/2 Full
FIFO 1/4 Full
FIFO Threshold Pointer
Figure 21. FIFO Structure
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TLC3548CDWG4 | 功能描述:模數轉換器 - ADC 14-bit 5V 200KSPS 8-Channel Unipolar RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLC3548CDWR | 功能描述:模數轉換器 - ADC 14-bit 5V 200KSPS 8-Channel Unipolar RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLC3548CDWRG4 | 功能描述:模數轉換器 - ADC 14-bit 5V 200KSPS 8-Channel Unipolar RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLC3548CPW | 功能描述:模數轉換器 - ADC 14-bit 5V 200KSPS 8-Channel Unipolar RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLC3548CPWG4 | 功能描述:模數轉換器 - ADC 14-bit 5V 200KSPS 8-Channel Unipolar RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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