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參數(shù)資料
| 型號： | ADS1000A1IDBVR |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LOW POWER, 12-Bit ANALOG-TO-DIGITAL CONVERTER with I2C⑩ INTERFACE |
| 中文描述： | 低功耗，12位模擬數(shù)字轉(zhuǎn)換接口的I2C⑩ |
| 文件頁數(shù)： | 11/17頁 |
| 文件大小： | 240K |
| 代理商： | ADS1000A1IDBVR |
www.ti.com
APPLICATION INFORMATION
BASIC CONNECTIONS
For many applications, connecting the ADS1000 is
extremely simple. A basic connection diagram for the
ADS1000 is shown in
Figure 9
.
1
2
3
6
5
4
V
IN
-
V
IN+
SCL
GND
V
DD
SDA
ADS1000
Positive Input
(0V to 5V)
Negative Input
(0V to 5V)
V
DD
V
DD
4.7 F (typ.)
m
Microcontroller or
Microprocessor
with I C Port
SCL
SDA
I C Pull-Up Resistors
1k
to 10k
W
(typ.)
W
ADS1000
SBAS357–SEPTEMBER 2006
The ADS1000 interfaces directly to standard mode,
fast mode, and high-speed mode I
2
C controllers. Any
microcontroller I
2
C peripheral, including master-only
and non-multiple-master I
2
C peripherals, will work
with the ADS1000. The ADS1000 does not perform
clock-stretching (that is, it never pulls the clock line
low), so it is not necessary to provide for this unless
other devices are on the same I
2
C bus.
The fully differential voltage input of the ADS1000 is
ideal for connection to differential sources with
moderately low source impedance, such as bridge
sensors and thermistors. Although the ADS1000 can
read bipolar differential signals, it cannot accept
negative voltages on either input. It may be helpful to
think of the ADS1000 positive voltage input as
noninverting, and of the negative input as inverting.
Pull-up resistors are necessary on both the SDA and
SCL lines because I
2
C bus drivers are open-drain.
The size of these resistors depends on the bus
operating speed and capacitance of the bus lines.
Higher-value resistors consume less power, but
increase the transition times on the bus, limiting the
bus speed. Lower-value resistors allow higher speed
at the expense of higher power consumption. Long
bus lines have higher capacitance and require
smaller pullup resistors to compensate. The resistors
should not be too small; if they are, the bus drivers
may not be able to pull the bus lines low.
When the ADS1000 is converting, it draws current in
short spikes. The 0.1
μ
F bypass capacitor supplies
the momentary bursts of extra current needed from
the supply.
Figure 9. Typical Connections of the ADS1000
11
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS1000A1IDBVRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low Power 12-Bit 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 |
| ADS1000A1IDBVT | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit ADC with I2C Interface 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 |
| ADS1000A1IDBVT | 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC |
| ADS1000A1IDBVTG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit ADC with I2C Interface 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 |
| ADS1000A1QDBVRQ1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Auto Cat Low Cost 12B ADC 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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