參數(shù)資料
型號(hào)： MAX192BMJP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 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, CDIP20
封裝： CERDIP-20
文件頁(yè)數(shù)： 17/24頁(yè)
文件大?。?/td> 201K
代理商： MAX192BMJP
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
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX192BMWP/PR 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX1930ESA 功能描述:電源開(kāi)關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
MAX1930ESA+ 功能描述:電源開(kāi)關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
MAX1930ESA+T 功能描述:電源開(kāi)關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
MAX1930ESA-T 功能描述:電源開(kāi)關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
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