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參數(shù)資料
| 型號： | ADC14161CIVT |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | Low-Distortion, Self-Calibrating 14-Bit, 2.5 MSPS, 390 mW A/D Converter |
| 中文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP52 |
| 封裝： | TQFP-52 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 471K |
| 代理商： | ADC14161CIVT |
Pin Descriptions and Equivalent Circuits
Pin
No.
Analog I/O
Symbol
Equivalent Circuit
Description
1
V
IN
+
Non-Inverting analog signal Input. With a 2.0V reference voltage and a
2.0V common mode voltage, V
CM
, the input signal voltage range is from
1.0 volt to 3.0 Volts.
Inverting analog signal Input. With a 2.0V reference voltage and a 2.0V
common mode voltage, V
CM
, the input signal voltage range is from 1.0 Volt
to 3.0 Volts. The input signal should be balanced for best performance.
Positive reference input. This pin should be bypassed to AGND with a 0.1
μF monolithic capacitor. V
REF
+ minus V
REF IN
should be a minimum of
1.8V and a maximum of 2.2V. The full-scale input voltage is equal to
V
REF
+
IN
minus V
REF
IN
.
Negative reference input. In most applications this pin should be connected
to AGND and the full reference voltage applied to V
REF
+
IN
. If the
application requires that V
REF
IN
be offset from AGND, this pin should be
bypassed to AGND with a 0.1 μF monolithic capacitor. V
REF
+
IN
minus
V
should be a minimum of 1.8V and a maximum of 2.2V. The
full-scale input voltage is equal to V
REF
+
IN
minus V
REF
IN
.
Output of the high impedance positive reference buffer. With a 2.0V
reference input, and with a V
CM
of 2.0V, this pin will have a 3.0V output
voltage. This pin should be bypassed to AGND with a 0.1 μF monolithic
capacitor in parallel with a 10 μF capacitor.
4
V
IN
48
V
REF
+
IN
47
V
REF
IN
50
V
REF
+
OUT
49
REF
OUT
The output of the negative reference buffer. With a 2.0V reference and a
V
CM
of 2.0V, this pin will have a 1.0V output voltage. This pin should be
bypassed to AGND with a 0.1 μF monolithic capacitor in parallel with a 10
μF capacitor.
52
V
REF (MID)
Output of the reference mid-point, nominally equal to 0.4 V
A
(2.0V). This
pin should be bypassed to AGND with a 0.1 μF monolithic capacitor. This
voltage is derived from V
CM
.
51
V
CM
Input to the common mode buffer, nominally equal to 40% of the supply
voltage (2.0V). This pin should be bypassed to AGND with a 0.1 μF
monolithic capacitor. Best performance is obtained if this pin is driven with
a low impedance source of 2.0V.
Digital I/O
10
Clock
Digital clock input. The input voltage is captured t
AD
after the fall of the
clock signal. The range of frequencies for this input is 300 kHz to 2.5 MHz.
The clock frequency should not be changed or interrupted during
conversion or while reading data output.
A
www.national.com
3
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| ADC141S625CIMM | 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC141S625CIMM/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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC141S625CIMMX | 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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