ltc2258cuj-12 Linear Technology Corporation, ltc2258cuj-12 Datasheet - Page 11

• 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
–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
0
5
0
0
LTC2257-12: 8k Point FFT, f
–1dBFS, 40Msps
0
0
LTC2258-12: IO
Rate, 5MHz Sine Wave Input,
–1dB, 5pF on Each Data Output
0
LTC2257-12: Differential
Nonlinearity (DNL)
1024
1.8V CMOS
SAMPLE RATE (Msps)
20
FREQUENCY (MHz)
OUTPUT CODE
VDD
2048
1.75mA LVDS
10
3.5mA LVDS
vs Sample
40
1.2V CMOS
3072
IN
= 70MHz
225812 G25
225812 G14
225812 G22
60
4096
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
72
71
70
69
68
67
66
0
0
0.6
LTC2257-12: 8k Point FFT, f
–1dBFS, 40Msps
0
LTC2258-12: SNR vs SENSE,
f
LTC2257-12: 8k Point FFT, f
–1dBFS, 40Msps
0
IN
= 5MHz, –1dB
0.7
0.8
FREQUENCY (MHz)
FREQUENCY (MHz)
SENSE PIN (V)
0.9
10
10
1
1.1
LTC2257-12/LTC2256-12
IN
IN
1.2
= 137MHz
= 5MHz
225812 G26
225812 G15
225812 G23
1.3
20
20
–100
–110
–120
–100
–110
–120
–0.2
–0.4
–0.6
–0.8
–1.0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
1.0
0.8
0.6
0.4
0.2
0
0
0
0
LTC2257-12: 8k Point FFT, f
–1dBFS, 40Msps
0
LTC2257-12: 8k Point 2-Tone FFT,
f
40Msps
0
LTC2257-12: Integral Nonlinearity
(INL)
IN
= 68MHz, 69MHz, –1dBFS,
1024
LTC2258-12
FREQUENCY (MHz)
FREQUENCY (MHz)
OUTPUT CODE
2048
10
10
3072
11
IN
= 30MHz
225812p
225812 G21
225812 G24
225812 G27
4096
20
20