ADS54J20 Datasheet, PDF (14/81 Pages) Texas Instruments – Dual-Channel, 12-Bit, 1.0-GSPS, Analog-to-Digital Converter

ADS54J20
SBAS766A – MAY 2016 – REVISED MAY 2016
www.ti.com
7.9 Typical Characteristics
typical values are at T_A = 25°C, full temperature range is from T_MIN = –40°C to T_MAX = +85°C, ADC sampling rate = 1.0 GSPS,
50% clock duty cycle, AVDD3V = 3.0 V, AVDD = DVDD = 1.9 V, IOVDD = 1.15 V, –1-dBFS differential input, and 0-dB digital
gain (unless otherwise noted)
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
Input Frequency (MHz)
500
D001
SNR = 68.4 dBFS, SINAD = 68.3 dBFS,
THD = 84 dBc, IL spur = 89 dBc, SFDR = 87 dBc,
non HD2, HD3 spur = 93 dBc
Figure 3. FFT for 10-MHz Input Signal
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
Input Frequency (MHz)
500
D003
SNR = 67.8 dBFS, SINAD = 67.7 dBFS,
SFDR = 86 dBc, THD = 81 dBc, IL spur = 88 dBc,
non HD2, HD3 spur = 89 dBc
Figure 5. FFT for 170-MHz Input Signal
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
Input Frequency (MHz)
500
D005
SNR = 66.7 dBFS, SINAD = 66.3 dBFS,
IL spur = 85 dBc, SFDR = 77 dBc, THD = 76 dBc,
non HD2, HD3 spur = 92 dBc
Figure 7. FFT for 300-MHz Input Signal
0
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-60
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-100
-120
0
100
200
300
400
Input Frequency (MHz)
500
D002
SNR = 67.9 dBFS, SINAD = 67.8 dBFS,
SFDR = 87 dBc, THD = 85 dBc, IL spur = 88 dBc,
non HD2, HD3 spur = 96 dBc
Figure 4. FFT for 140-MHz Input Signal
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
Input Frequency (MHz)
500
D004
SNR = 67.4 dBFS, SINAD = 67.2 dBFS,
IL spur = 87 dBc, SFDR = 84 dBc, THD = 82 dBc,
non HD2, HD3 spur = 90 dBc
Figure 6. FFT for 230-MHz Input Signal
0
-20
-40
-60
-80
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-120
0
100
200
300
400
Input Frequency (MHz)
500
D006
SNR = 65.8 dBFS, SINAD = 65 dBFS,
SFDR = 74 dBc, THD = 72 dBc,
IL spur = 85 dBc, non HD2, HD3 spur = 86 dBc
Figure 8. FFT for 370-MHz Input Signal
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