參數(shù)資料
型號： TLV1508IPWLE
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： PLASTIC, TSSOP-20
文件頁數(shù)： 30/42頁
文件大?。?/td> 638K
代理商： TLV1508IPWLE
TLV1504, TLV1508
2.7 V TO 5.5 V, 10-BIT, 200 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS251 – DECEMBER 1999
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
400
300
200
5.5
5
4.5
4
MUX
ON
Resistance
–
500
600
700
3.5
3
2.7
VCC – Supply Voltage – V
Figure 41. Input MUX Impedance vs Supply Voltage
power down calculations
i(AVERAGE) = (fS/fSMAX) × i(ON) + (1–fS/fSMAX) × i(OFF)
CASE 1: If VDD = 3.3 V, auto power down, and an external reference is used:
f
S +
10
kHz
f
SMAX +
200
kHz
i (ON)
+X 1 mA operating current and i(OFF) +X 1 mA auto powerdown current
so
i (AVERAGE)
+ 0.05
1000
mA ) 0.95
1
mA + 51 mA
CASE 2: Now if software power down is used, another cycle is needed to shut it down.
f
S +
20
kHz
f
SMAX +
200
kHz
i (ON)
+X 1 mA operating current and i(OFF) +X 1 mA powerdown current
so
i (AVERAGE)
+ 0.1
1000
mA ) 0.9
1
mA + 101 mA
In reality this will be less since the second conversion never happened. It is only the additional cycle to shut down
the ADC.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV1508IPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 200 kSPS Serial Out 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
TLV1508IPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 200 kSPS Serial Out 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
TLV1543 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3V 10 BIT ANALOG TO DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS
TLV1543C 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS
TLV1543CDB 功能描述:模數(shù)轉(zhuǎn)換器 - ADC High Speed A/D 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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