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參數(shù)資料
| 型號： | ADC1173CIMTC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | Pushbutton Switch; Switch Terminals:Solder Lug; Contact Current Max:5A; Leaded Process Compatible:Yes; Mounting Type:Panel; Switch Features:Lighted Indicator RoHS Compliant: Yes |
| 中文描述： | 1-CH 8-BIT RESISTANCE LADDER ADC, PARALLEL ACCESS, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 13/17頁 |
| 文件大小： | 466K |
| 代理商： | ADC1173CIMTC |
Applications Information
(Continued)
If reference voltages are desired that are more than a few
tens of millivolts from the self-bias values, the circuit of Fig-
ure 5 will allow forcing the reference voltages to whatever
levels are desired. This circuit provides the best performance
because of the low source impedance of the transistors.
Note that the V
RTS
and V
RBS
pins are left floating.
V
can be anywhere between V
+ 1.0V and the analog
supply voltage, and V
can be anywhere between ground
and 1.0V below V
. To minimize noise effects and ensure
accurate conversions, the total reference voltage range (V
- V
) should be a minimum of 1.0V and a maximum of
about V
A
. Best performance can be realized with V
RT
= 1.56
and V
RB
= 0.36V.
3.0 Power Supply Considerations
Many A/D converters draw sufficient transient current to cor-
rupt their own power supplies if not adequately bypassed. A
10μF tantalum or aluminum electrolytic capacitor should be
placed within an of inch (2.5 centimeters) of the A/D power
pins, with a 0.1 μF ceramic chip capacitor placed as close as
possible to the converter’s power supply pins. Leadless chip
capacitors are preferred because they have low lead induc-
tance.
While a single voltage source should be used for the analog
and digital supplies of the ADC1173, these supply pins
should be well isolated from each other to prevent any digital
noise from being coupled to the analog power pins. A 47
Ohm resistor is recommend between the analog and digital
supply lines, with a ceramic capacitor close to the analog
supply pin. Avoid inductive components in the analog supply
line.
The converter digital supply should
not
be the supply that is
used for other digital circuitry on the board. It should be the
same supply used for the A/D analog supply.
As is the case with all high speed converters, the ADC1173
should be assumed to have little power supply rejection, es-
pecially when self-biasing is used by connecting V
RT
and
V
RTS
together.
No pin should ever have a voltage on it that is in excess of
the supply voltages or below ground, not even on a trasient
DS100890-15
FIGURE 5. Driving the reference to force desired values requires driving with a low impedance source, provided by
the transistors. Note that pins 16 and 22 are not connected.
www.national.com
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADC1173CIMTCX | Pushbutton Switch; Contact Current Max:5A; Contact Rating:5A; Leaded Process Compatible:Yes; Mounting Type:Panel; Size/Dimensions:HxWxD 0.708 x0.944 x1.65 in; Switch Features:Lighted Indicator |
| ADC1175CIJM | 8-Bit, 20MHz, 60mW A/D Converter |
| ADC1175CIJMX | 8-Bit, 20MHz, 60mW A/D Converter |
| ADC1175-50 | 8-Bit, 50 MSPS, 125 mW A/D Converter |
| ADC1175-50CIMT | 8-Bit, 50 MSPS, 125 mW A/D Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADC1173CIMTC | 制造商:Texas Instruments 功能描述:IC 8BIT ADC SMD 1173 TSSOP24 |
| ADC1173CIMTC/NOPB | 功能描述:模數(shù)轉(zhuǎn)換器 - 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC1173CIMTCX | 功能描述:模數(shù)轉(zhuǎn)換器 - 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC1173CIMTCX/NOPB | 功能描述:模數(shù)轉(zhuǎn)換器 - 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC1173EVAL | 功能描述:BOARD EVALUATION FOR ADC1173 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
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