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參數(shù)資料
| 型號： | ADS7806PB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDIP28 |
| 封裝： | 0.300 INCH, GREEN, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 20/25頁 |
| 文件大?。?/td> | 670K |
| 代理商： | ADS7806PB |
ADS7806
4
SBAS021B
www.ti.com
DIGITAL
PIN #
NAME
I/O
DESCRIPTION
ANALOG
CONNECT R1IN
CONNECT R2IN
INPUT
VIA 200
VIA 100
RANGE
TO
IMPEDANCE
±10V
VIN
CAP
45.7k
0V to 5V
AGND
VIN
20.0k
0V to 4V
VIN
21.4k
TABLE I. Input Range Connections. See Figure 7.
PIN CONFIGURATION
1R1IN
Analog Input. See Figure 7.
2
AGND1
Analog Sense Ground
3R2IN
Analog Input. See Figure 7.
4
CAP
Reference Buffer Output. 2.2
F tantalum capacitor to ground.
5
REF
Reference Input/Output. 2.2
F tantalum capacitor to ground.
6
AGND2
Analog Ground
7
SB/BTC
I
Selects Straight Binary or Binary Two’s Complement for Output Data Format.
8
EXT/INT
I
External/Internal data clock select.
9
D7
O
Data Bit 3 if BYTE is HIGH. Data bit 11 (MSB) if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW. Leave
unconnected when using serial output.
10
D6
O
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.
11
D5
O
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.
12
D4
O
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.
13
D3
O
LOW if BYTE is HIGH. Data bit 7 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
14
DGND
Digital Ground
15
D2
O
LOW if BYTE is HIGH. Data bit 6 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
16
D1
O
LOW if BYTE is HIGH. Data bit 5 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
17
D0
O
LOW if BYTE is HIGH. Data bit 4 if BYTE is LOW. Hi-Z when CS is HIGH and/or R/C is LOW.
18
DATACLK
I/O
Data Clock Output when EXT/INT is LOW. Data clock input when EXT/INT is HIGH.
19
SDATA
O
Serial Output Synchronized to DATACLK
20
TAG
I
Serial Input When Using an External Data Clock
21
BYTE
I
Selects 8 most significant bits (LOW) or 4 least significant bits (HIGH) on parallel output pins.
22
R/C
I
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.
23
CS
I
Internally OR’ed 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.
24
BUSY
O
At the start of a conversion, BUSY goes LOW and stays LOW until the conversion is completed and the digital outputs
have been updated.
25
PWRD
I
PWRD HIGH shuts down all analog circuitry except the reference. Digital circuitry remains active.
26
REFD
I
REFD HIGH shuts down the internal reference. External reference will be required for conversions.
27
VANA
Analog Supply. Nominally +5V. Decouple with 0.1
F ceramic and 10F tantalum capacitors.
28
VDIG
Digital Supply. Nominally +5V. Connect directly to pin 27. Must be
≤ V
ANA.
PIN DESCRIPTIONS
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
ADS7806
Top View
DIP, SO
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS7806PBG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 12-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 |
| ADS7806PG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 12-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 |
| ADS7806U | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 12-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 |
| ADS7806U | 制造商:Texas Instruments 功能描述:12BIT ADC LOW POWER SERIAL 7806 |
| ADS7806U/1K | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 12-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 |
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