参数资料
型号: MAX1245BEPP+
厂商: Maxim Integrated Products
文件页数: 2/21页
文件大小: 0K
描述: IC ADC 12BIT SERIAL 20-DIP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 18
位数: 12
采样率(每秒): 100k
数据接口: MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 2.4mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 20-DIP(0.300",7.62mm)
供应商设备封装: 20-PDIP
包装: 管件
输入数目和类型: 8 个单端,单极;8 个单端,双极;4 个差分,单极;4 个差分,双极
MAX1245
+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
10
______________________________________________________________________________________
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(MSB)
(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
SEL2
These three bits select which of the eight channels are used for the conversion (Tables 2 and 3).
5
SEL1
4
SEL0
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
PD1
Selects clock and power-down modes.
0(LSB)
PD0
PD1
PD0
Mode
0
Power-down (IQ = 1.2A)
0
1
Unassigned
1
0
Internal clock mode
1
External clock mode
Table 1. Control-Byte Format
SEL2
SEL1
SEL0
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
00
0
+
10
0
+
00
1
+
10
1
+
01
0
+
11
0
+
01
1
+–
11
1
+
Table 2. Channel Selection in Single-Ended Mode (SGL/D
DIIF
F = 1)
SEL2
SEL1
SEL0
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
00
0
+
00
1
+
01
0
+
01
1
+–
10
0
+
10
1
+
11
0
+
11
1
–+
Table 3. Channel Selection in Differential Mode (SGL/D
DIIF
F = 0)
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MAX1245BMJP 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
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