ltc2258cuj-12 Linear Technology Corporation, ltc2258cuj-12 Datasheet - Page 13

• Manufacturer Part Number: ltc2258cuj-12
• Description: 12-bit, 65/40/2 5msps Ultralow Power 1.8v Adcs
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–100
–110
–120
–100
–110
–120
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
72
71
70
69
68
67
66
0
0
0
LTC2256-12: 8k Point FFT, f
–1dBFS, 25Msps
0
LTC2256-12: SNR vs Input
Frequency, –1dB, 2V Range,
25Msps
0
LTC2256-12: 8k Point FFT, f
–1dBFS, 25Msps
50
INPUT FREQUENCY (MHz)
100
FREQUENCY (MHz)
FREQUENCY (MHz)
5
5
150
200
250
IN
IN
10
10
300
= 140MHz
= 5MHz
225814 G46
225812 G49
225812 G43
350
–100
–110
–120
–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
95
90
85
80
75
70
65
0
0
LTC2256-12: SFDR vs Input
Frequency, –1dB, 2V Range,
25Msps
0
0
LTC2256-12: 8k Point FFT, f
–1dBFS, 25Msps
0
LTC2256-12: 8k Point 2-Tone FFT,
f
25Msps
IN
= 68MHz, 69MHz, –1dBFS,
50
INPUT FREQUENCY (MHz)
100
FREQUENCY (MHz)
FREQUENCY (MHz)
5
150
5
200
250
LTC2257-12/LTC2256-12
IN
10
10
300
= 30MHz
225814 G47
225812 G44
225812 G50
350
18000
16000
14000
12000
10000
–100
–110
–120
8000
6000
4000
2000
–10
–20
–30
–40
–50
–60
–70
–80
–90
110
100
90
80
70
60
50
40
30
20
10
0
0
0
2049
–80
LTC2256-12: 8k Point FFT, f
–1dBFS, 25Msps
0
LTC2256-12: Shorted Input
Histogram
LTC2256-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 25Msps
–70 –60 –50 –40 –30 –20 –10
LTC2258-12
INPUT LEVEL (dBFS)
FREQUENCY (MHz)
OUTPUT CODE
5
2051
dBFS
dBc
IN
10
= 70MHz
13
225812 G45
225812 G48
225812 G52
225812p
2053
0