參數(shù)資料
型號(hào)： ADS7807
英文描述： Low-Power 16-Bit Sampling CMOS ANALOG-to-DIGITAL CONVERTER
中文描述： 低功耗16位采樣CMOS模擬數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 4/23頁(yè)
文件大?。?/td> 524K
代理商： ADS7807
ADS7807
SBAS022B
4
www.ti.com
1
2
3
4
5
6
7
8
9
R1
AGND1
R2
IN
CAP
REF
AGND2
SB/BTC
EXT/INT
D7
Analog Input. See Figure 7.
Analog Sense Ground.
Analog Input. See Figure 7.
Reference Buffer Output. 2.2
μ
F tantalum capacitor to ground.
Reference Input/Output. 2.2
μ
F tantalum capacitor to ground.
Analog Ground
Selects Straight Binary or Binary Two
’
s Complement for Output Data Format.
External/Internal data clock select.
Data Bit 7 if BYTE is HIGH. Data bit 15 (MSB) if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW. Leave
unconnected when using serial output.
Data Bit 6 if BYTE is HIGH. Data bit 14 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Bit 5 if BYTE is HIGH. Data bit 13 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Bit 4 if BYTE is HIGH. Data bit 12 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Bit 3 if BYTE is HIGH. Data bit 11 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Digital Ground
Data Bit 2 if BYTE is HIGH. Data bit 10 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Bit 1 if BYTE is HIGH. Data bit 9 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Bit 0 (LSB) if BYTE is HIGH. Data bit 8 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
Data Clock Output when EXT/INT is LOW. Data clock input when EXT/INT is HIGH.
Serial Output Synchronized to DATACLK
Serial Input When Using an External Data Clock
Selects 8 most significant bits (LOW) or 8 least significant bits (HIGH) on parallel output pins.
With CS LOW and BUSY HIGH, a Falling Edge on R/C Initiates a New Conversion. With CS LOW, a rising edge on R/C
enables the parallel output.
Internally OR
’
d with R/C. If R/C is LOW, a falling edge on CS initiates a new conversion. If EXT/INT is LOW, this same
falling edge will start the transmission of serial data results from the previous conversion.
At the start of a conversion, BUSY goes LOW and stays LOW until the conversion is completed and the digital outputs
have been updated.
PWRD HIGH shuts down all analog circuitry except the reference. Digital circuitry remains active.
REFD HIGH shuts down the internal reference. External reference will be required for conversions.
Analog Supply. Nominally +5V. Decouple with 0.1
μ
F ceramic and 10
μ
F tantalum capacitors.
Digital Supply. Nominally +5V. Connect directly to pin 27. Must be
≤
V
ANA
.
I
I
O
10
11
12
13
14
15
16
17
18
19
20
21
22
D6
D5
D4
D3
O
O
O
O
DGND
D2
D1
D0
DATACLK
SDATA
TAG
BYTE
R/C
O
O
O
I/O
O
I
I
I
23
CS
I
24
BUSY
O
25
26
27
28
PWRD
REFD
V
ANA
V
DIG
I
I
DIGITAL
I/O
PIN #
NAME
DESCRIPTION
ANALOG
INPUT
RANGE
CONNECT R1
IN
VIA 200
TO
CONNECT R2
IN
VIA 100
TO
IMPEDANCE
±
10V
0V to 5V
0V to 4V
V
CAP
V
IN
V
IN
45.7k
20.0k
21.4k
AGND
V
IN
TABLE I. Input Range Connections. See Figure 7.
PIN CONFIGURATION
PIN DESCRIPTIONS
Top View
DIP, SO
V
DIG
V
ANA
REFD
PWRD
BUSY
CS
R/C
BYTE
TAG
SDATA
DATACLK
D0
D1
D2
R1
IN
AGND1
R2
IN
CAP
REF
AGND2
SB/BTC
EXT/INT
D7
D6
D5
D4
D3
DGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ADS7807
相關(guān)PDF資料
PDF描述
ADS7807P CMOS Quad 2-Input NOR Gate 14-SOIC -55 to 125
ADS7807PB Low-Power 16-Bit Sampling CMOS ANALOG-to-DIGITAL CONVERTER
ADS7808 CMOS Quad 2-Input NOR Gate 14-SO -55 to 125
ADS7808P 12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
ADS7808PB 12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7807_06 制造商:BB 制造商全稱:BB 功能描述:Low-Power, 16-Bit, Sampling CMOS ANALOG-to-DIGITAL CONVERTER
ADS7807_08 制造商:BB 制造商全稱:BB 功能描述:Low-Power, 16-Bit, Sampling CMOS ANALOG-to-DIGITAL CONVERTER
ADS7807P 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 16-Bit Sampling CMOS 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
ADS7807P 制造商:Texas Instruments 功能描述:16BIT ADC SAMPLING 7807 DIP28
ADS7807P 制造商:Texas Instruments 功能描述:IC ADC 16BIT 40KSPS DIP-28 制造商:Texas Instruments 功能描述:IC, ADC, 16BIT, 40KSPS, DIP-28
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