LTC2293 Linear Technology, LTC2293 Datasheet - Page 7

• Manufacturer Part Number: LTC2293
• Description: (LTC2291 - LTC2293) 65/40/25Msps Low Power 3V ADCs
• Manufacturer: Linear Technology

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