參數(shù)資料
型號(hào)： MAX1080
廠商： Maxim Integrated Products, Inc.
英文描述： 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
中文描述： 300ksps/400ksps、單電源、低功耗、8通道、串行10位ADC，內(nèi)置電壓基準(zhǔn)
文件頁(yè)數(shù)： 12/24頁(yè)
文件大?。?/td> 550K
代理商： MAX1080
Table 1. Channel Selection in Single-Ended Mode (SGL/
DIF
= 1)
SEL2
0
SEL1
0
SEL0
0
CH0
+
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
–
0
0
1
+
–
0
1
0
+
–
0
1
1
+
–
1
0
0
+
–
1
0
1
+
–
1
1
0
+
–
1
1
1
+
–
Table 2. Channel Selection in Pseudo-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
–
+
M
300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
12
______________________________________________________________________________________
Track/Hold
The T/H enters its tracking mode on the falling clock
edge after the fifth bit of the 8-bit control word has been
shifted in. It enters its hold mode on the falling clock
edge after the eighth bit of the control word has been
shifted in. If the converter is set up for single-ended
inputs, IN- is connected to COM and the converter con-
verts the “+” input. If the converter is set up for differen-
tial inputs, the difference of
[(
IN+) - (IN-)
]
is converted.
At the end of the conversion, the positive input con-
nects back to IN+ and C
HOLD
charges to the input sig-
nal.
The time required for the T/H to acquire an input signal
is a function of how quickly its input capacitance is
charged. If the input signal’s source impedance is high,
the acquisition time lengthens, and more time must be
allowed between conversions. The acquisition time,
t
ACQ
, is the maximum time the device takes to acquire
the signal and the minimum time needed for the signal
to be acquired. It is calculated by the following equa-
tion:
t
ACQ
= 7
(R
S
+ R
IN
)
12pF
where R
IN
= 800
, R
S
= the source impedance of the
input signal, and t
ACQ
is never less than 468ns
(MAX1080) or 625ns (MAX1081). Note that source
impedances below 4k
do not significantly affect the
ADC’s AC performance.
Input Bandwidth
The ADC’s input tracking circuitry has a 6MHz
(MAX1080) or 3MHz (MAX1081) small-signal band-
width, so it is possible to digitize high-speed transient
events and measure periodic signals with bandwidths
exceeding the ADC’s sampling rate by using under-
sampling techniques. To avoid high-frequency signals
being aliased into the frequency band of interest, anti-
alias filtering is recommended.
Analog Input Protection
Internal protection diodes, which clamp the analog input
to V
DD1
and GND, allow the channel input pins to swing
from GND - 0.3V to V
DD1
+ 0.3V without damage.
However, for accurate conversions near full scale, the
inputs must not exceed V
DD1
by more than 50mV or be
lower than GND by 50mV.
If the analog input exceeds 50mV beyond the sup-
plies, do not allow the input current to exceed 2mA.
相關(guān)PDF資料
PDF描述
MAX1081 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
MAX1080-MAX1081 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
MAX1080ACUP 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
MAX1080AEUP 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
MAX1080BCUP 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1080ACUP 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
MAX1080ACUP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 8-Ch 10-Bit w/Int Ref 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
MAX1080ACUP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 8-Ch 10-Bit w/Int Ref 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
MAX1080ACUP-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
MAX1080AEUP 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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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