MAX1278 Maxim Integrated Products, MAX1278 Datasheet - Page 6

• Manufacturer Part Number: MAX1278
• Description: (MAX1276 / MAX1278) 12-Bit ADCs
• Manufacturer: Maxim Integrated Products

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1.8Msps, Single-Supply, Low-Power, True-
Differential, 12-Bit ADCs with Internal Reference
(V
ured at T
6
DD
_______________________________________________________________________________________
= +5V, V
A
= +25°C)
L
= V
DD
72.00
71.75
71.50
71.25
71.00
, f
-100
-120
-140
-20
-40
-60
-80
SCLK
95
93
91
89
87
85
0
100
100
0
f
SINAD = 71.2dB
SNR = 71.3dB
THD = -95.5dB
SFDR = 90.5dB
IN
vs. INPUT FREQUENCY (MAX1278)
= 28.8MHz, f
= 500kHz
150
SFDR vs. INPUT FREQUENCY
ANALOG INPUT FREQUENCY (kHz)
ANALOG INPUT FREQUENCY (kHz)
ANALOG INPUT FREQUENCY (kHz)
DYNAMIC PERFORMANCE
MAX1278
200
200
FFT PLOT (MAX1278)
SINAD
300
SNR
300
SAMPLE
MAX1276
450
300
600
Typical Operating Characteristics (continued)
400
= 1.8Msps, T
400
750
500
500
900
A
= T
MIN
-100
-100
-120
-140
-50
-60
-70
-80
-90
-86
-88
-90
-92
-94
-96
-20
-40
-60
-80
0
to T
100
10
0
f
SINAD = 71.0dB
SNR = 71.1dB
THD = -87.1dB
SFDR = 90.2dB
IN
MAX
= 500kHz
TOTAL HARMONIC DISTORTION
150
THD vs. INPUT FREQUENCY
ANALOG INPUT FREQUENCY (kHz)
ANALOG INPUT FREQUENCY (kHz)
, unless otherwise noted. Typical values are meas-
vs. SOURCE IMPEDANCE
200
SOURCE IMPEDANCE (Ω)
FFT PLOT (MAX1276)
f
IN
300
= 500kHz
MAX1278
100
300
450
f
IN
= 100kHz
600
400
MAX1276
750
1000
500
900