Datasheet

LTC2238/LTC2237/LTC2236
9
223876fa
LTC2237: I
OVDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB,
O
VDD
= 1.8V
LTC2237: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2237: SFDR vs Input Level,
f
IN
= 5MHz, 2V Range, 40Msps
LTC2236: Typical INL,
2V Range, 25Msps
LTC2236: Typical DNL,
2V Range, 25Msps
LTC2236: 8192 Point FFT,
f
IN
= 5MHz, –1dB, 2V Range,
25Msps
LTC2236: 8192 Point FFT,
f
IN
= 30MHz, –1dB, 2V Range,
25Msps
LTC2236: 8192 Point FFT,
f
IN
= 70MHz, –1dB, 2V Range,
25Msps
LTC2236: 8192 Point FFT,
f
IN
= 140MHz, –1dB, 2V Range,
25Msps
INPUT LEVEL (dBFS)
–60
0
SFDR (dBc AND dBFS)
20
40
60
80
120
–50
–40 –30
dBFS
dBc
–20
223876 G28
–10 0
100
10
30
50
70
110
90
80dBc SFDR
REFERENCE LINE
SAMPLE RATE (Msps)
0
I
VDD
(mA)
40
45
40
223876 G29
35
30
10
20
30
50
50
2V RANGE
1V RANGE
SAMPLE RATE (Msps)
0
I
OVDD
(mA)
2
3
40
223876 G30
1
0
10
20
30
50
4
CODE
0
INL ERROR (LSB)
0
0.25
0.50
1024
223876 G31
–0.25
–0.50
–1.00
256
512
768
–0.75
1.00
0.75
CODE
0
DNL ERROR (LSB)
0
0.25
0.50
1024
223876 G32
–0.25
–0.50
–1.00
256
512
768
–0.75
1.00
0.75
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
4
8
10
223876 G33
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
4
8
10
223876 G34
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
4
8
10
223876 G35
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
4
8
10
223876 G36
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12