MAX1274_09 Datasheet, PDF (6/18 Pages) Maxim Integrated Products – 1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs

1.8Msps, Single-Supply, Low-Power,
True-Differential, 12-Bit ADCs
Typical Operating Characteristics (continued)
(V_DD = +5V, V_L = V_DD, V_REF = 4.096V, f_SCLK = 28.8MHz, T_A = -40°C to +85°C, unless otherwise noted. Typical values are measured
at T_A = +25°C)
FFT PLOT (MAX1275)
0
f_SAMPLE = 2Msps
-20
f_SCLK = 32MHz
f_IN = 100kHz
SINAD = 70.41dB
-40
SNR = 70.53dB
THD = -85.92dB
-60
SFDR = 87.56dB
-80
FFT PLOT (MAX1274)
0
f_SAMPLE = 2Msps
-20
f_SCLK = 32MHz
f_IN = 300kHz
-40
SINAD = 70.88dB
SNR = 71.24dB
THD = -81.96dB
-60
SFDR = 83.65dB
-80
-100
-100
-120
-120
-140
0
200 400 600 800 1000
ANALOG INPUT FREQUENCY (kHz)
-140
0
200 400 600 800 1000
ANALOG INPUT FREQUENCY (kHz)
0
-20
-40
-60
-80
-100
-120
-140
0
FFT PLOT (MAX1275)
f_SAMPLE = 2Msps
f_SCLK = 32MHz
f_IN = 300kHz
SINAD = 70.66dB
SNR = 71.09dB
THD = -80.85dB
SFDR = 81.26dB
200 400 600 800 1000
ANALOG INPUT FREQUENCY (kHz)
0
-20
-40
-60
-80
-100
-120
-140
0
FFT PLOT (MAX1274)
f_SAMPLE = 2Msps
f_SCLK = 32MHz
f_IN = 500kHz
SINAD = 70.84dB
SNR = 71.11dB
THD = -83.05dB
SFDR = 84.68dB
200 400 600 800 1000
ANALOG INPUT FREQUENCY (kHz)
0
-20
-40
-60
-80
-100
-120
-140
0
FFT PLOT (MAX1275)
f_SAMPLE = 2Msps
f_SCLK = 32MHz
f_IN = 500kHz
SINAD = 70.55dB
SNR = 70.73dB
THD = -84.43dB
SFDR = 85.16dB
200 400 600 800 1000
ANALOG INPUT FREQUENCY (kHz)
TOTAL HARMONIC DISTORTION
vs. SOURCE IMPEDANCE
-60
-65
-70
-75
f_IN = 500kHz
-80
-85
-90
f_IN = 100kHz
-95
-100
10
100
1000
SOURCE IMPEDANCE (Ω)
6 _______________________________________________________________________________________