Datasheet

LTC2258-12
LTC2257-12/LTC2256-12
13
225812fd
For more information www.linear.com/LTC2258-12
LTC2257-12: SNR vs SENSE,
f
IN
= 5MHz, –1dB
Typical perForMance characTerisTics
LTC2256-12: Integral Nonlinearity
(INL)
LTC2256-12: Differential
Nonlinearity (DNL)
SENSE PIN (V)
0.6
71
68
69
70
67
66
72
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.31
225812 G35
OUTPUT CODE
0
–1.0
–0.4
–0.6
–0.8
INL ERROR (LSB)
–0.2
0
0.4
0.6
0.2
0.8
1.0
1024
2048 3072 4096
225812 G41
OUTPUT CODE
0
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
1024
2048 3072 4096
225812 G42
LTC2256-12: 8k Point 2-Tone FFT,
f
IN
= 68MHz, 69MHz, –1dBFS,
25Msps
LTC2256-12: Shorted Input
Histogram
LTC2256-12: 8k Point FFT,
f
IN
= 30MHz, –1dBFS, 25Msps
LTC2256-12: 8k Point FFT,
f
IN
= 70MHz, –1dBFS, 25Msps
LTC2256-12: 8k Point FFT,
f
IN
= 140MHz, –1dBFS, 25Msps
LTC2256-12: 8k Point FFT,
IN
= 5MHz, –1dBFS, 25Msps
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
5
10
225812 G43
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
5
10
225812 G44
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
5
225814 G46
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
5
225814 G47
OUTPUT CODE
2049
2000
4000
6000
8000
0
12000
10000
COUNT
14000
16000
18000
2051 2053
225812 G48
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
5
10
225812 G45