MAX194BEWE 데이터 시트보기 (PDF) - Maxim Integrated
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MAX194BEWE Datasheet PDF : 24 Pages
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14-Bit, 85ksps ADC with 10µA Shutdown
14.0
13.5
13.0
12.5
12.0
11.5
fS = 85kHz
TA = +25°C
11.0
10.5
10.0
0.1
1
10
100
INPUT FREQUENCY (kHz)
Figure 26. Effective Bits vs. Input Frequency
90
fS = 85kHz
85
TA = +25°C
80
75
70
65
60
0.1
1
10
100
FREQUENCY (kHz)
Figure 27. Signal-to-Noise + Distortion vs. Frequency
11 . . . 111
11 . . . 110
11 . . . 101
11 . . . 100
11 . . . 011
11 . . . 010
00 . . . 110
00 . . . 101
00 . . . 100
00 . . . 011
00 . . . 010
00 . . . 001
00 . . . 000
0V
VREF - (1LSB)
11 . . . 111
11 . . . 110
11 . . . 101
10 . . . 010
10 . . . 001
10 . . . 000
01 . . . 111
01 . . . 110
00 . . . 010
00 . . . 001
00 . . . 000
-VREF
0V
VREF - (1LSB)
Figure 28. MAX194 Unipolar Transfer Function
Figure 29. MAX194 Bipolar Transfer Function
Spurious-Free Dynamic Range
Spurious-free dynamic range is the ratio of the funda-
mental RMS amplitude to the amplitude of the next
largest spectral component (in the frequency band
above DC and below one-half the sample rate). Usually,
this peak occurs at some harmonic of the input frequen-
cy. However, if the ADC is exceptionally linear, it may
occur only at a random peak in the ADC’s noise floor.
Transfer Function
Figures 28 and 29 show the MAX194’s transfer func-
tions. In unipolar mode, the output data is in binary for-
mat and in bipolar mode it is offset binary.
TRANSISTOR COUNT: 7966
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1997 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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