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参数资料
型号： TLC2574IPWR
厂商： TEXAS INSTRUMENTS INC
元件分类： ADC
英文描述： 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装： GREEN, PLASTIC, TSSOP-20
文件页数： 25/48页
文件大小： 1092K
代理商： TLC2574IPWR
TLC3574, TLC3578, TLC2574, TLC2578
5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL
SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS
SLAS262C OCTOBER 2000 REVISED MAY 2003
31
WWW.TI.COM
conversion operation (continued)
CS
FS
SDI
INT
SDO
***
Command = Configure Write for Mode 11, FIFO
Threshold = 1/2 Full, Sweep Sequence: 0022
**
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 19. Mode 11, CSTART Triggers Samplings/Conversions, FS Initiates SELECT Operation
conversion clock and conversion speed
The conversion clock source can be the internal OSC, or the external clock, SCLK. The conversion clock is equal
to the internal OSC if the internal clock is used, or equal to SCLK/4 when the external clock is selected. It takes
18 conversion clocks plus 15 ns to finish the conversion for TLC3574 and TLC3578, and 13 conversion clocks
plus 15 ns for the TLC2574 and TLC2578. If the external clock is selected, the conversion time (not including
sampling time) is 18X(4/fSCLK)+15 ns for TLC3574 and TLC3578 and 13X(4/fSCLK)+15 ns for TLC2574 and
TLC2578. Table 4 shows the maximum conversion rate (including sampling time) when the analog input source
resistor is 25
.
Table 4. Maximum Conversion Rate
DEVICE
SAMPLING MODE
CONVERSION CLK
MAX SCLK
(MHz)
CONVERSION
TIME (
s)
RATE
(KSPS)
SHORT (16 SCLK)
External
SCLK/4
10
8.815
113.4
TLC3574/78
LONG (48 SCLK)
External
SCLK/4
25
4.815
207.7
TLC3574/78
(Rs = 25
)
SHORT (16 SCLK)
Internal
6.5 MHz
10
4.384
228.0
(Rs = 25
)
LONG (48 SCLK)
Internal
6.5 MHz
25
4.705
212.5
SHORT (16 SCLK)
Exernal
SCLK/4
10
6.815
146.7
TLC2574/78
LONG (48 SCLK)
External
SCLK/4
25
4.015
249.1
TLC2574/78
(Rs = 25
)
SHORT (16 SCLK)
Internal
6.5 MHz
10
3.615
276.6
(Rs = 25
)
LONG (48 SCLK)
Internal
6.5 MHz
25
3.935
254.1
相关PDF资料
PDF描述
TLC2574IDWR 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
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相关代理商/技术参数
参数描述
TLC2574IPWRG4 功能描述:模数转换器 - ADC Serial Out Low Power RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
TLC2578EVM 功能描述:数据转换 IC 开发工具 TLC2578 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V
TLC2578IDW 功能描述:模数转换器 - ADC Serial Out Low Power RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
TLC2578IDWG4 功能描述:模数转换器 - ADC Serial Out Low Power RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
TLC2578IDWR 功能描述:模数转换器 - ADC Serial Out Low Power RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
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