![](http://datasheet.mmic.net.cn/Maxim-Integrated-Products/MAX1078CTC-T_datasheet_105481/MAX1078CTC-T_6.png)
Typical Operating Characteristics (continued)
(VDD = +5V, VL = VDD, fSCLK = 28.8MHz, fSAMPLE = 1.8Msps, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA =
+25°C.)
MAX1076/MAX1078
1.8Msps, Single-Supply, Low-Power, True-
Differential, 10-Bit ADCs with Internal Reference
6
_______________________________________________________________________________________
DYNAMIC PERFORMANCE
vs. INPUT FREQUENCY (MAX1078)
MAX1076/78
toc10
ANALOG FREQUENCY (kHz)
DYNAMIC
PERFORMANCE
(dB)
400
300
200
61.25
61.50
61.75
62.00
61.00
100
500
SNR
SINAD
THD vs. INPUT FREQUENCY
MAX1076/78
toc11
ANALOG INPUT FREQUENCY (kHz)
THD
(dB)
400
300
200
-94
-92
-90
-86
-88
-84
-80
-82
-96
100
500
MAX1076
MAX1078
SFDR vs. INPUT FREQUENCY
MAX1076/78
toc12
ANALOG INPUT FREQUENCY (kHz)
SFDR
(dB)
400
300
200
84
86
88
90
82
100
500
MAX1078
MAX1076
FFT PLOT (MAX1076)
MAX1076/78
toc13
ANALOG FREQUENCY (kHz)
AMPLITUDE
(dB)
750
600
450
300
150
-120
-100
-80
-60
-40
-20
0
-140
0
900
fIN = 500kHz
SINAD = 61.5dB
SNR = 61.4dB
THD = -88.5dB
SFDR = 87.0dB
FFT PLOT (MAX1078)
MAX1076/78
toc14
ANALOG FREQUENCY (kHz)
AMPLITUDE
(dB)
750
600
450
300
150
-120
-100
-80
-60
-40
-20
0
-140
0
900
fIN = 500kHz
SINAD = 61.4dB
SNR = 61.5dB
THD = -93.8dB
SFDR = 84.5dB
TOTAL HARMONIC DISTORTION
vs. SOURCE IMPEDANCE
MAX1076/78
toc15
SOURCE IMPEDANCE (
Ω)
THD
(dB)
100
-90
-80
-70
-60
-50
-100
10
1000
fIN = 500kHz
fIN = 100kHz
TWO-TONE IMD PLOT (MAX1076)
MAX1076/78
toc16
ANALOG FREQUENCY (kHz)
AMPLITUDE
(dB)
800
600
400
200
-120
-100
-80
-60
-40
-20
0
-140
0
1000
fSAMPLE = 2Msps
fIN1 = 250.039kHz
fIN2 = 300.059kHz
IMD = -81.9dB
fIN1
fIN2
TWO-TONE IMD PLOT (MAX1078)
MAX1076/78
toc17
ANALOG FREQUENCY (kHz)
AMPLITUDE
(dB)
800
600
400
200
-120
-100
-80
-60
-40
-20
0
-140
0
1000
fSAMPLE = 2Msps
fIN1 = 250.039kHz
fIN2 = 300.059kHz
IMD = 82.1dB
fIN1
fIN2
VDD/VL FULL POWER-DOWN SUPPLY
CURRENT vs. TEMPERATURE
MAX1076/78
toc18
TEMPERATURE (
°C)
V
DD
/V
LSUPPLY
CURRENT
(μ
A)
60
35
10
-15
0.2
0.4
0.6
0.8
1.0
0
-40
85
VDD, fSCLK = 28.8MHz
VDD, NO SCLK
VL, NO SCLK