參數(shù)資料
型號: MAX146BCPP
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: ADC
英文描述: +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
中文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20
封裝: 0.300 INCH, PLASTIC, DIP-20
文件頁數(shù): 11/24頁
文件大小: 198K
代理商: MAX146BCPP
M
+2.7V, Low-Power, 8-Channel,
S erial 12-Bit ADCs
______________________________________________________________________________________
11
BIT
NAME
DESCRIPTION
7(MSB)
START
The first logic “1” bit after
CS
goes low defines the beginning of the control byte.
6
5
4
SEL2
SEL1
SEL0
These three bits select which of the eight channels are used for the conversion (Tables 2 and 3).
3
UNI/BIP
1 = unipolar, 0 = bipolar. Selects unipolar or bipolar conversion mode. In unipolar mode, an
analog input signal from 0V to VREF can be converted; in bipolar mode, the signal can range
from -VREF/2 to +VREF/2.
2
SGL/DIF
1 = single ended, 0 = differential. Selects single-ended or differential conversions. In single-
ended mode, input signal voltages are referred to COM. In differential mode, the voltage
difference between two channels is measured (Tables 2 and 3).
1
0(LSB)
PD1
PD0
Selects clock and power-down modes.
PD1
PD0
0
0
0
1
1
0
1
1
Mode
Full power-down
Fast power-down (MAX146 only)
Internal clock mode
External clock mode
Table 1. Control-Byte Format
BIT 7
BIT 6
(MSB)
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(LSB)
START
SEL2
SEL1
SEL0
UNI/BIP
SGL/DIF
PD1
PD0
Table 2. Channel Selection in Single-Ended Mode (SGL/
DIF
= 1)
SEL2
0
SEL1
0
SEL0
0
CH0
+
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
1
0
0
+
0
0
1
+
1
0
1
+
0
1
0
+
1
1
0
+
0
1
1
+
1
1
1
+
Table 3. Channel Selection in Differential Mode (SGL/
DIF
= 0)
SEL2
SEL1
SEL0
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
0
0
0
+
0
0
1
+
0
1
0
+
0
1
1
+
1
0
0
+
1
0
1
+
1
1
0
+
1
1
1
+
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MAX146BEAP/GH9-T 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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