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參數(shù)資料
型號(hào): TLC5540INSLE
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDSO24
封裝: PLASTIC, SOP-24
文件頁數(shù): 5/21頁
文件大小: 407K
代理商: TLC5540INSLE
TLC5540
SLAS105D JANUARY 1995 REVISED APRIL 2004
www.ti.com
13
PRINCIPLES OF OPERATION
internal reference voltage conversion
Three internal resistors allow the device to generate an internal reference voltage. These resistors are brought
out on terminals VDDA, REFTS, REFT, REFB, REFBS, and AGND. Two different bias voltages are possible
without the use of external resistors.
Internal resistors are provided to develop REFT = 2.6 V and REFB = 0.6 V (bias option one) with only two
external connections. This is developed with a 3-resistor network connected to VDDA. When using this feature,
connect REFT to REFTS and connect REFB to REFBS. For applications where the variance associated with
VDDA is acceptable, this internal voltage reference saves space and cost (see Figure 14).
A second internal bias option (bias two option) is shown in Figure 15. Using this scheme REFB = AGND and
REFT = 2.28 V nominal. These bias voltage options can be used to provide the values listed in the following
table.
Table 1. Bias Voltage Options
BIAS OPTION
BIAS VOLTAGE
BIAS OPTION
VRB
VRT
VRT VRB
1
0.61
2.63
2.02
2
AGND
2.28
To use the internally-generated reference voltage, terminal connections should be made as shown in
Figure 14 or Figure 15. The connections in Figure 14 provide the standard video 2-V reference.
R1
320
NOM
Rref
270
NOM
R2
80
NOM
VDDA
5 V (Analog)
REFTS
REFT
REFB
REFBS
AGND
TLC5540
16
17
22
21
23
18
0.1
F
0.1
F
2.63 V dc
0.61 V dc
Figure 14. External Connections Using the Internal Bias One Option
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC5540INSR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8bit 40Msps 1ch 5V RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLC5540INSRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 40 MSPS 1-Ch Internal S&H Lo Pwr RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLC5540IPW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8bit A/D w/Serial RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLC5540IPWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8bit A/D w/Serial RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLC5540IPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 40 MSPS 1-Ch Internal S&H Lo Pwr RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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