ADS62P45_08 Datasheet, PDF (35/70 Pages) Texas Instruments – DUAL CHANNEL, 14-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS

www.ti.com
ADS62P45, ADS62P44
ADS62P43, ADS62P42
SLAS561A – JULY 2007 – REVISED FEBRUARY 2008
TYPICAL CHARACTERISTICS - ADS62P42 (F_S= 65 MSPS)
All plots are at 25°C, AVDD = DRVDD = 3.3 V, maximum rated sampling frequency, sine wave input clock, 1.5 V_PP differential
clock amplitude, 50% clock duty cycle, –1 dBFS differential analog input, internal reference mode, 0 dB gain, CMOS output
interface (unless otherwise noted)
FFT for 20 MHz INPUT SIGNAL
0
SFDR = 88.5 dBc
−20 ^{SINAD = 74.35 dBFS}
SNR = 74.56 dBFS
−40 ^{THD = 86.5 dBc}
−60
−80
−100
−120
−140
−160
0
10
20
f − Frequency − MHz
Figure 58.
30
G055
0
−20
−40
−60
−80
−100
−120
−140
−160
0
FFT for 190 MHz INPUT SIGNAL
SFDR = 89.9 dBc
SINAD = 71.51 dBFS
SNR = 71.88 dBFS
THD = 81.32 dBc
10
20
f − Frequency − MHz
Figure 60.
30
G057
96
94
92
90
88
86
84
82
80
78
76
0
SFDR vs INPUT FREQUENCY
Gain = 3.5 dB
Gain = 0 dB
25 50 75 100 125 150 175 200
f_IN − Input Frequency − MHz
G059
Figure 62.
0
−20
−40
−60
−80
−100
−120
−140
−160
0
FFT for 70 MHz INPUT SIGNAL
SFDR = 88.18 dBc
SINAD = 74.13 dBFS
SNR = 74.28 dBFS
THD = 87.89 dBc
10
20
f − Frequency − MHz
Figure 59.
30
G056
INTERMODULATION DISTORTION (IMD) vs FREQUENCY
0
−20
f_IN1 = 190.1 MHz, –7 dBFS
f_IN2 = 185.3 MHz, –7 dBFS
2-Tone IMD = 92 dBFS
−40
SFDR = 95 dBFS
−60
−80
−100
−120
−140
−160
0
10
20
f − Frequency − MHz
Figure 61.
30
G058
SNR vs INPUT FREQUENCY
76
75
Gain = 0 dB
74
73
Gain = 3.5 dB
72
71
70
0
25 50 75 100 125 150 175 200
f_IN − Input Frequency − MHz
G060
Figure 63.
Copyright © 2007–2008, Texas Instruments Incorporated
Submit Documentation Feedback
35
Product Folder Link(s): ADS62P45, ADS62P44 ADS62P43, ADS62P42