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參數(shù)資料
| 型號： | MAX1080-MAX1081 |
| 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 -內(nèi)部參考位ADC |
| 文件頁數(shù)： | 16/24頁 |
| 文件大小： | 550K |
| 代理商： | MAX1080-MAX1081 |
M
Hardware Power-Down
Pulling
SHDN
low places the converter in hardware
power-down. Unlike software power-down mode, the
conversion is terminated immediately. When returning
to normal operation from
SHDN
with an external refer-
ence, the MAX1080/MAX1081 can be considered fully
powered up within 2μs of actively pulling
SHDN
high.
When using the internal reference, the conversion
should be initiated only after the reference has settled;
its recovery time is dependent on the external bypass
capacitors and shutdown duration.
Power-Down Sequencing
The MAX1080/MAX1081 automatic power-down modes
can save considerable power when operating at less
than maximum sample rates. Figures 10 and 11 show
the average supply current as a function of the sam-
pling rate.
Using Full Power-Down Mode
Full power-down mode (FULLPD) achieves the lowest
power consumption, up to 1000 conversions per chan-
nel per second. Figure 10a shows the MAX1081’s
power consumption for one- or eight-channel conver-
sions utilizing full power-down mode (PD1 = PD0 = 0),
with the internal reference and the maximum clock
speed. A 0.01μF bypass capacitor at REFADJ forms an
RC filter with the internal 17k
reference resistor, with a
200μs time constant. To achieve full 10-bit accuracy,
seven time constants or 1.4ms are required after
power-up if the bypass capacitor is fully discharged
between conversions. Waiting this 1.4ms duration in
300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
16
______________________________________________________________________________________
PD1/PD0
MODE
CONVERTING
(mA)
AFTER
CONVERSION
INPUT COMPARATOR
REFERENCE
00
Full Power-Down
(FULLPD)
2.5
2μA
Off
Off
01
Fast Power-Down
(FASTPD)
2.5
0.9mA
Reduced Power
On
10
Reduced-Power
Mode (REDP)
2.5
1.3mA
Reduced Power
On
11
Normal Operating
2.5
2.0mA
Full Power
On
CIRCUIT SECTIONS*
TOTAL SUPPLY CURRENT
Table 4. Software-Controlled Power Modes
*Circuit operation between conversions; during conversion all circuits are fully powered up.
SCLK
DIN
DOUT
SSTRB
t
CSS
t
CH
t
CSO
t
CL
t
DH
t
DS
t
DOE
t
STE
t
CSW
t
CP
t
CSH
t
CS1
t
STD
t
DOD
t
DOV
t
DOH
t
STV
t
STH
CS
Figure 7. Detailed Serial-Interface Timing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1081 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1081ACUP | 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 |
| MAX1081ACUP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3V 400ksps Low-Power 8Ch Serial 10-Bit 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 |
| MAX1081ACUP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3V 400ksps Low-Power 8Ch Serial 10-Bit 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 |
| MAX1081ACUP-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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