Datasheet

LTC2238/LTC2237/LTC2236
6
223876fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2238: 8192 Point FFT,
f
IN
= 70MHz, –1dB, 2V Range,
65Msps
LTC2238: 8192 Point FFT,
f
IN
= 140MHz, –1dB, 2V Range,
65Msps
LTC2238: Grounded Input
Histogram, 65Msps
LTC2238: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
LTC2238: 8192 Point 2-Tone FFT,
f
IN
= 28.2MHz and 26.8MHz,
–1dB, 2V Range, 65Msps
LTC2238: 8192 Point FFT,
f
IN
= 5MHz, –1dB, 2V Range,
65Msps
LTC2238: 8192 Point FFT,
f
IN
= 30MHz, –1dB, 2V Range,
65Msps
LTC2238: Typical DNL,
2V Range, 65Msps
LTC2238: Typical INL,
2V Range, 65Msps
CODE
0
INL ERROR (LSB)
0
0.25
0.50
1024
223876 G01
–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 G02
–0.25
–0.50
–1.00
256
512
768
–0.75
1.00
0.75
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
10
20
25
223876 G03
–100
–110
–40
–60
–90
–30
–120
–50
–70
5
15
30
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
10
20
25
223876 G04
–100
–110
–40
–60
–90
–30
–120
–50
–70
5
15
30
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
10
20
25
223876 G05
–100
–110
–40
–60
–90
–30
–120
–50
–70
5
15
30
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
10
20
25
223876 G06
–100
–110
–40
–60
–90
–30
–120
–50
–70
5
15
30
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
10
20
25
223876 G07
–100
–110
–40
–60
–90
–30
–120
–50
–70
5
15
30
CODE
70000
60000
50000
40000
30000
20000
10000
0
512
65520
513
223876 G08
511
0
0
COUNT
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
59.5
60.5
200
223876 G09
58.5
57.5
50
100
150
62.5
61.5