IC ADC 10BIT SERIAL 20-SSOP

 

MAX192BCAP+T

Manufacturer Part NumberMAX192BCAP+T
DescriptionIC ADC 10BIT SERIAL 20-SSOP
ManufacturerMaxim Integrated Products
TypeData Acquisition System (DAS), ADC
MAX192BCAP+T datasheets

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Specifications of MAX192BCAP+T

Resolution (bits)10 bSampling Rate (per Second)133k
Data InterfaceSerialVoltage Supply SourceSingle Supply
Voltage - Supply±5VOperating Temperature0°C ~ 70°C
Mounting TypeSurface MountPackage / Case20-SSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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DIN
1
0 0
FULLPD
2.5V
REFADJ
0V
4V
VREF
0V
Figure 13. FULLPD/FASTPD Power-Up Sequence
FULL POWER-DOWN
1000
8 CHANNELS
100
1 CHANNEL
10
2ms FASTPD WAIT
400kHz EXTERNAL CLOCK
INTERNAL COMPENSATION
1
0
100
200
300
CONVERSIONS PER CHANNEL PER SECOND
Figure 14a. Supply Current vs. Sample Rate/Second, FULLPD,
400kHz Clock
RC filter with the internal 20kΩ 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
______________________________________________________________________________________
Low-Power, 8-Channel,
COMPLETE CONVERSION SEQUENCE
2ms WAIT
(ZEROS)
1
0 1
1
FASTPD
= RC = 20k x C
REFADJ
t
BUFFEN
10,000
400
500
Figure 14b. Supply Current vs. Sample Rate/Second, FASTPD,
2MHz Clock
Figure 14c. Typical Power-Up Delay vs. Time in Shutdown
Serial 10-Bit ADC
(ZEROS)
CH1
CH7
1
1
1
0 0
1
NOPD
FULLPD
15 s
FAST POWER-DOWN
1 CHANNEL
8 CHANNELS
1000
100
2MHz EXTERNAL CLOCK
EXTERNAL COMPENSATION
50µs WAIT
10
0
4k
8k
12k
16k
CONVERSIONS PER CHANNEL PER SECOND
3.0
2.5
2.0
1.5
1.0
0.5
0
0.0001
0.001
0.01
0.1
1
TIME IN SHUTDOWN (sec)
0 1
FASTPD
10
17

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