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参数资料
型号： LTC2268IUJ-14#TRPBF
厂商： Linear Technology
文件页数： 4/32页
文件大小： 0K
描述： IC ADC 14BIT 125MSPS DUAL 40QFN
标准包装： 2,000
位数： 14
采样率（每秒）： 125M
数据接口： Serial LVDS
转换器数目： 2
功率耗散（最大）： 364mW
电压电源： 单电源
工作温度： -40°C ~ 85°C
安装类型： 表面贴装
封装/外壳： 40-WFQFN 裸露焊盘
供应商设备封装： 40-QFN（6x6）
包装： 带卷 (TR)
输入数目和类型： 2 Differential; 2 Single-Ended
配用： DC1371A-ND - BOARD USB DATA ACQUISITION HS
LTC2268-14/
LTC2267-14/LTC2266-14
12
22687614fa
Typical perForMance characTerisTics
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR
(dBFS)
50
100 150 200
250 300 350
226814 G10
INPUT LEVEL (dBFS)
–80
60
50
40
30
20
10
0
80
70
SFDR
(dBc
AND
dBFS)
90
100
110
–70 –60 –50 –40 –30 –20 –10
0
226814 G12
dBFS
dBc
SENSE PIN (V)
0.6
71
68
69
70
67
66
72
73
74
SNR
(dBFS)
0.7
0.8
0.9
1.1
1.2
1.3
1
226814 G15
OUTPUT CODE
0
–2.0
–0.5
–1.0
–1.5
INL
ERROR
(LSB)
0
0.5
1.0
1.5
2.0
4096
8192
12288
16384
226814 G21
IOVDD vs Sample Rate, 5MHz
Sine Wave Input, –1dB
LTC2268-14: SNR vs SENSE,
fIN = 5MHz, –1dB
LTC2267-14: Integral
Nonlinearity (INL)
LTC2268-14: SFDR vs Input
Frequency, –1dB, 2V Range,
125Msps
LTC2268-14: SFDR vs Input Level,
fIN = 70MHz, 2V Range, 125Msps
LTC2268-14: IVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
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
4096
8192
12288
16384
226814 G22
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE
(dBFS) –50
–30
–40
–20
–10
0
10
20
30
40
50
226814 G23
LTC2267-14: Differential
Nonlinearity (DNL)
LTC2267-14: 8k Point FFT,
fIN = 5MHz, –1dBFS, 105Msps
INPUT LEVEL (dBFS)
60
50
40
30
20
10
0
80
70
SNR
(dBc
AND
dBFS)
–60
–50
–40
–30
–20
–10
0
226814 G50a
dBFS
dBc
LTC2268-14: SNR vs Input Level,
fIN = 70MHz, 2V Range, 125Msps
SAMPLE RATE (Msps)
160
150
140
130
120
110
100
I VDD
(mA)
0
25
50
75
100
125
226814 G53
SAMPLE RATE (Msps)
30
20
10
0
IO
VDD
(mA)
0
25
50
75
100
125
226814 G51
1-LANE, 1.75mA
2-LANE, 3.5mA
2-LANE, 1.75mA
1-LANE, 3.5mA
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