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参数资料
| 型号： | MAX192AEWP |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | Low-Power, 8-Channel, Serial 10-Bit ADC |
| 中文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 17/24页 |
| 文件大小： | 201K |
| 代理商： | MAX192AEWP |
M
Low-Power, 8-Channel,
S erial 10-Bit ADC
______________________________________________________________________________________
17
1
0 0
DIN
REFADJ
VREF
2.5V
0V
4V
0V
1
01
1
1
1
1
00
1
01
FULLPD
FASTPD
NOPD
FULLPD
FASTPD
2ms WAIT
COMPLETE CONVERSION SEQUENCE
t
BUFFEN
≈
15
μ
s
τ
= RC = 20k
x C
REFADJ
(ZEROS)
CH1
CH7
(ZEROS)
Figure 13. FULLPD/FASTPD Power-Up Sequence
RC filter with the internal 20k
reference resistor with a
0.2ms time constant. To achieve full 10-bit accuracy,
10 time constants or 2ms are required after power-up.
Waiting 2ms in FASTPD mode instead of full power-up
will reduce the power consumption by a factor of 10 or
more. This is achieved by using the sequence shown in
Figure 13.
Lowest Power at Higher Throughputs
Figure 14b shows the power consumption with
external-reference compensation in fast power-down,
with one and eight channels converted. The external
4.7μF compensation requires a 50μs wait after
power-up, accomplished by 75 idle clocks after a
dummy conversion. This circuit combines fast
multi-channel conversion with lowest power consump-
tion possible. Full power-down mode may provide
increased power savings in applications where the
1000
1
0
100
300
500
FULL POWER-DOWN
10
100
M
CONVERSIONS PER CHANNEL PER SECOND
200
400
2ms FASTPD WAIT
400kHz EXTERNAL CLOCK
INTERNAL COMPENSATION
8 CHANNELS
1 CHANNEL
A
μ
A
10,000
10
0
FAST POWER-DOWN
100
1000
CONVERSIONS PER CHANNEL PER SECOND
8 CHANNELS
1 CHANNEL
4k
8k
12k
16k
2MHz EXTERNAL CLOCK
EXTERNAL COMPENSATION
50μs WAIT
A
μ
A
M
3.0
2.5
2.0
1.5
1.0
0.5
0
0.0001
0.001
0.01
0.1
1
10
TIME IN SHUTDOWN (sec)
P
Figure 14a.
400kHz Clock
Supply Current vs. Sample Rate/Second, FULLPD,
Figure 14b. Supply Current vs. Sample Rate/Second, FASTPD,
2MHz Clock
Figure 14c. Typical Power-Up Delay vs. Time in Shutdown
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX192AEWP/GG8 | 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 |
| MAX192AEWP+ | 功能描述:模数转换器 - ADC 10-Bit 8Ch 133ksps 5V Precision 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 |
| MAX192AEWP+T | 功能描述:模数转换器 - ADC 10-Bit 8Ch 133ksps 5V Precision 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 |
| MAX192AEWP-T | 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 |
| MAX192BCAP | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) 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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