參數(shù)資料
型號(hào): MAX148
廠(chǎng)商: Maxim Integrated Products, Inc.
英文描述: +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs(8通道,133ksps,串行10位A/D轉(zhuǎn)換器)
中文描述: +2.7V至+5.25V、低功耗、8通道、串行10位ADC
文件頁(yè)數(shù): 9/20頁(yè)
文件大?。?/td> 200K
代理商: MAX148
M
+2.7V, Low-Power, 8-Channel,
S erial 10-Bit ADC
_______________________________________________________________________________________
9
BIT 7
(MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(LSB)
START
SEL2
SEL1
SEL0
UNI/
BIP
SGL/
DIF
PD1
PD0
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
Power-down (I
Q
= 1.2μA)
Unassigned
Internal clock mode
External clock mode
Table 1. Control-Byte Format
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 2. Channel Selection in Single-Ended Mode (SGL/
DIF
= 1)
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
+
Table 3. Channel Selection in Differential Mode (SGL/
DIF
= 0)
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