LTC2293_15 Datasheet, PDF (7/28 Pages) Linear Technology – Dual 12-Bit, 65/40/25Msps Low Power 3V ADCs

LTC2293/LTC2292/LTC2291
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2293: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
72
71
70
69
68
0
50
100
150
200
INPUT FREQUENCY (MHz)
229321 G10
LTC2293: SFDR vs Input Frequency,
–1dB, 2V Range, 65Msps
100
95
90
85
80
75
70
65
0
50
100
150
200
INPUT FREQUENCY (MHz)
229321 G11
LTC2293: SNR and SFDR vs
Sample Rate, 2V Range,
f_IN = 5MHz, –1dB
110
100
SFDR
90
80
SNR
70
60
0
20 40 60 80
SAMPLE RATE (Msps)
100
229321 G12
LTC2293: SNR and SFDR vs
Clock Duty Cycle, 65Msps
100
95 ^{SFDR: DCS ON}
90
SFDR: DCS OFF
85
80
75
SNR: DCS ON
70
SNR: DCS OFF
LTC2293: SNR vs Input Level,
f_IN = 30MHz, 2V Range, 65Msps
80
dBFS
70
60
50
dBc
40
30
20
10
LTC2293: SFDR vs Input Level,
f_IN = 30MHz, 2V Range, 65Msps
120
110
dBFS
100
90
80
dBc
70
60
90dBc SFDR
50
REFERENCE LINE
40
30
65
30 35 40 45 50 55 60 65 70
CLOCK DUTY CYCLE (%)
0
–60 –50 – 40 –30 –20 –10 0
INPUT LEVEL (dBFS)
20
–60 –50 – 40 –30 –20 –10 0
INPUT LEVEL (dBFS)
229321 G13
229321 G14
229321 G15
LTC2293: I_VDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2293: I_OVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB,
O_VDD = 1.8V
155
12
145
10
135
8
1V RANGE
125
6
2V RANGE
115
4
105
2
95
0 10 20 30 40 50 60 70 80
SAMPLE RATE (Msps)
229321 G16
0
0 10 20 30 40 50 60 70 80
SAMPLE RATE (Msps)
229321 G17
229321fa
7