ltc2258cuj-14 Linear Technology Corporation, ltc2258cuj-14 Datasheet - Page 11

• Manufacturer Part Number: ltc2258cuj-14
• Description: 14-bit, 65/40/25msps Ultralow Power 1.8v Adcs
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–100
–110
–120
–0.2
–0.4
–0.6
–0.8
–1.0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1.0
0.8
0.6
0.4
0.2
45
40
35
30
25
20
15
10
5
0
0
0
0
LTC2257-14: 8k Point FFT, f
–1dBFS, 40Msps
LTC2258-14: IO
Rate, 5MHz Sine Wave Input,
–1dB, 5pF on Each Data Output
LTC2257-14: Differential
Non-Linearity (DNL)
0
0
4096
1.75mA LVDS
3.5mA LVDS
SAMPLE RATE (Msps)
20
FREQUENCY (MHz)
1.8V CMOS
OUTPUT CODE
VDD
8192
10
vs Sample
40
1.2V CMOS
12288
IN
= 70MHz
225814 G14
225814 G25
225814 G22
60
16384
20
–100
–110
–120
–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
75
74
73
72
71
70
69
68
67
0
0
0.6
0
LTC2258-14: SNR vs SENSE,
f
LTC2257-14: 8k Point FFT, f
–1dBFS, 40Msps
0
LTC2257-14: 8k Point FFT, f
–1dBFS, 40Msps
IN
= 5MHz, –1dB
0.7
0.8
FREQUENCY (MHz)
FREQUENCY (MHz)
SENSE PIN (V)
0.9
10
10
1
1.1
LTC2257-14/LTC2256-14
IN
IN
1.2
= 5MHz
= 137MHz
225814 G15
225814 G26
225814 G23
1.3
20
20
–100
–110
–120
–100
–110
–120
–0.5
–1.0
–1.5
–2.0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–50
–60
–70
–80
–90
–10
–20
–30
–40
2.0
1.5
1.0
0.5
0
0
0
0
LTC2257-14: 8k Point 2-Tone FFT,
f
40Msps
LTC2257-14: 8k Point FFT, f
–1dBFS, 40Msps
0
LTC2257-14: Integral Non-Linearity
(INL)
0
IN
= 68MHz, 69MHz, –1dBFS,
4096
LTC2258-14
FREQUENCY (MHz)
FREQUENCY (MHz)
OUTPUT CODE
8192
10
10
12288
IN
11
= 30MHz
225814 G24
225814 G21
225814 G27
225814p
16384
20
20