![](http://datasheet.mmic.net.cn/Maxim-Integrated-Products/MAX1279AETC-_datasheet_101700/MAX1279AETC-_6.png)
Typical Operating Characteristics (continued)
(VDD = +3V, VL = VDD, fSCLK = 24MHz, fSAMPLE = 1.5Msps, TA = -40°C to +85°C, unless otherwise noted. Typical values are mea-
sured at TA = +25°C.)
MAX1277/MAX1279
1.5Msps, Single-Supply, Low-Power, True-
Differential, 12-Bit ADCs with Internal Reference
6
_______________________________________________________________________________________
70.0
69.5
69.0
68.5
68.0
100
300
200
400
500
DYNAMIC PERFORMANCE
vs. INPUT FREQUENCY (MAX1277)
MAX1277/79
toc10
ANALOG INPUT FREQUENCY (kHz)
DYNAMIC
PERFORMANCE
(dB)
SINAD
SNR
70.0
69.5
69.0
68.5
68.0
100
300
200
400
500
DYNAMIC PERFORMANCE
vs. INPUT FREQUENCY (MAX1279)
MAX1277/79
toc11
ANALOG INPUT FREQUENCY (kHz)
DYNAMIC
PERFORMANCE
(dB)
SINAD
SNR
-80
-84
-88
-92
-96
100
300
200
400
500
THD vs. INPUT FREQUENCY
MAX1277/79
toc12
ANALOG INPUT FREQUENCY (kHz)
THD
(dB)
MAX1277
MAX1279
82
84
88
86
90
92
SFDR vs. INPUT FREQUENCY
MAX1277/79
toc13
ANALOG INPUT FREQUENCY (kHz)
SFDR
(dB)
100
300
200
400
500
MAX1277
MAX1279
-140
-100
-120
-60
-80
-20
-40
0
250
375
125
500
625
750
FFT PLOT (MAX1277)
MAX1277/79
toc14
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE
(dB)
fIN = 500kHz
SINAD = 68.7dB
SNR = 68.9dB
THD = -83.1dB
SFDR = 85.0dB
-140
-100
-120
-60
-80
-20
-40
0
250
375
125
500
625
750
FFT PLOT (MAX1279)
MAX1277/79
toc15
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE
(dB)
fIN = 500kHz
SINAD = 69.0dB
SNR = 69.1dB
THD = -88.9dB
SFDR = 85.9dB