參數(shù)資料
型號： ADS7808U
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： 0.300 INCH, GREEN, PLASTIC, SOIC-20
文件頁數(shù)： 14/17頁
文件大?。?/td> 468K
代理商： ADS7808U
ADS7808
6
SBAS018A
www.ti.com
HEX
DESCRIPTION
BINARY CODE
CODE
BINARY CODE
CODE
Full-Scale Range
±10
±5
±3.33V
0V to 5V
0V to 10V
0V to 4V
Least Significant Bit (LSB)
4.88mV
2.44mV
1.63mV
1.22mV
2.44mV
0.98mV
+Full Scale (FS – 1LSB)
9.99512V 4.99756V 3.33171V
4.99878V 9.99756V
3.99902V
0111 1111 1111
7FF
1111 1111 1111
FFF
Midscale
0V
2.5V
5V
2V
0000 0000 0000
000
1000 0000 0000
800
One LSB Below Midscale
–4.88mV
–2.44mV
–1.63mV
2.49878V 4.99756V
1.99902V
1111 1111 1111
FFF
0111 1111 1111
7FF
–Full Scale
–10V
–5V
–3.333333V
0V
1000 0000 0000
800
0000 0000 0000
000
BINARY TWO’S
COMPLEMENT
STRAIGHT BINARY
(SB/BTC LOW)
(SB/BTC HIGH)
Initiate Conversion and
Output Data Using External
Clock
Power Down
Selecting Output Format
Incorrect Conversions
SPECIFIC FUNCTION
CS
R/C
BUSY
EXT/INT DATACLK PWRD
SB/BTC
OPERATION
Initiate Conversion and
1>0
0
1
0
Output
0
x
Initiates conversion “n”. Data from conversion “n–1”
Output Data Using
clocked out on DATA synchronized to 12 clock
Internal Clock
pulses output on DATACLK.
0
1>0
1
0
Output
0
x
Initiates conversion “n”. Data from conversion “n–1”
clocked out on DATA synchronized to 12 clock
pulses output on DATACLK.
1>0
0
1
Input
0
x
Initiates conversion “n”.
0
1>0
1
Input
0
x
Initiates conversion “n”.
1>0
1
Input
x
Outputs a pulse on SYNC followed by data from
conversion “n” clocked out synchronized to external
DATACLK.
1>0
1
0
1
Input
0
x
Outputs a pulse on SYNC followed by data from
conversion “n–1” clocked out synchronized to
external DATACLK.(1) Conversion “n” in process.
0
0>1
0
1
Input
0
x
Outputs a pulse on SYNC followed by data from
conversion “n–1” clocked out synchronized to
external DATACLK .(1) Conversion “n” in process.
0
0>1
x
0
x
CS or R/C must be HIGH or a new conversion will
be initiated without time for acquisition.
x
0
x
Analog circuitry powered. Conversion can proceed.
x
1
x
Analog circuitry disabled. Data from previous
conversion maintained in output registers.
x
0
Serial data is output in Binary Two’s Complement
format.
x
1
Serial data is output in Straight Binary format.
NOTE: (1) See Figure 3b for constraints on previous data valid during conversion.
Table III. Control Truth Table.
ANALOG INPUT
DIGITAL OUTPUT
Table IV. Output Codes and Ideal Input Voltages.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7808U 制造商:Texas Instruments 功能描述:IC 12BIT ADC 100KHZ SOIC20 制造商:Texas Instruments 功能描述:IC, 12BIT ADC, 100KHZ, SOIC20 制造商:Texas Instruments 功能描述:IC, 12BIT ADC, 100KHZ, SOIC20; Resolution (Bits):12bit; Sampling Rate:100kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Supply Current:16mA; Digital IC Case Style:SOIC; No. of Pins:20; Input ;RoHS Compliant: Yes
ADS7808U/1K 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 10us Serial CMOS Sampling 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
ADS7808U/1KE4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 10us Serial CMOS Sampling 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
ADS7808U/1KG4 制造商:Texas Instruments 功能描述:
ADS7808UB 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 10us Serial CMOS Sampling 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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