Datasheet

LTC2298/LTC2297/LTC2296
7
229876fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2298: SNR and SFDR vs
Sample Rate, 2V Range,
f
IN
= 5MHz, –1dB
LTC2298: SNR and SFDR vs
Clock Duty Cycle, 65Msps
LTC2298: SNR vs Input Level,
f
IN
= 30MHz, 2V Range, 65Msps
LTC2298: I
OVDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB,
O
VDD
= 1.8V
LTC2298: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2298: SFDR vs Input Level,
f
IN
= 30MHz, 2V Range, 65Msps
LTC2298: SFDR vs Input Frequency,
–1dB, 2V Range, 65Msps
INPUT FREQUENCY (MHz)
0
100
95
90
85
80
75
70
65
150
2298 G10
50 100 200
SFDR (dBFS)
SAMPLE RATE (Msps)
50
SNR AND SFDR (dBFS)
110
100
90
80
70
60
100
2298 G11
60
70 80
90010
20 30
40
110
CLOCK DUTY CYCLE (%)
SNR AND SFDR (dBFS)
2298 G12
100
95
90
85
80
75
70
30
40
50
55
35 45
60
65
70
SFDR: DCS ON
SNR: DCS ON
SNR: DCS OFF
SFDR: DCS OFF
INPUT LEVEL (dBFS)
–60 –50
SNR (dBc AND dBFS)
–40 –20–30
–10
0
2298 G13
80
70
60
50
40
30
20
10
0
dBFS
dBc
INPUT LEVEL (dBFS)
–60 –50 – 40 –20–30
–10
0
2298 G14
SFDR (dBc AND dBFS)
120
110
100
90
80
70
60
50
40
30
20
dBFS
dBc
90dBc SFDR
REFERENCE LINE
SAMPLE RATE (Msps)
I
VDD
(mA)
2298 G15
155
145
135
125
115
105
95
0
20
40
50
10 30
60
70
80
2V RANGE
1V RANGE
SAMPLE RATE (Msps)
I
OVDD
(mA)
2298 G16
12
10
8
6
4
2
0
0
20
40
50
10 30
60
70
80
LTC2298: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
200
2298 G09
50
100
150
75
74
73
72
71
70