参数资料
型号: LTC2145IUP-14#TRPBF
厂商: Linear Technology
文件页数: 2/38页
文件大小: 0K
描述: IC ADC DUAL 14BIT 125MSPS 64-QFN
标准包装: 2,000
位数: 14
采样率(每秒): 125M
数据接口: 并联,串行,SPI
转换器数目: 2
功率耗散(最大): 360mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-WFQFN 裸露焊盘
供应商设备封装: 64-QFN(9x9)
包装: 带卷 (TR)
输入数目和类型: 2 个差分
配用: DC890B-ND - BOARD USB DATA COLLECTION
LTC2145-14/
LTC2144-14/LTC2143-14
10
21454314fa
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2145-14: SFDR vs Input Level,
fIN = 70MHz, 125Msps, 2V Range
LTC2145-14: IVDD vs Sample
Rate, 5MHz, –1dBFS, Sine Wave
Input on Each Channel
LTC2145-14: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
125Msps, 2V Range
LTC2145-14: IOVDD vs Sample
Rate, 5MHz, –1dBFS, Sine Wave
on Each Input
LTC2145-14: SNR vs SENSE,
fIN = 5MHz, –1dBFS
LTC2144-14: Integral
Nonlinearity (INL)
LTC2144-14: Differential
Nonlinearity (DNL)
LTC2144-14: 64k Point FFT,
fIN = 5MHz, –1dBFS, 105Msps
LTC2145-14: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
125Msps, 1V Range
0
50
100
150
200
250
300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND
AND
3RD
HARMONIC
(dBFS)
21454314 G10
2ND
3RD
0
50
100
150
200
250
300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND
AND
3RD
HARMONIC
(dBFS)
218543 G11
2ND
3RD
INPUT LEVEL (dBFS)
120
90
80
100
110
SFDR
(dBc
AND
dBFS)
70
50
60
40
30
21454314 G12
–80 –70 –60 –50 –40 –30 –20 –10
0
dBc
dBFS
SAMPLE RATE (Msps)
0
75
80
85
110
105
100
95
90
I VDD
(mA)
25
50
75
125
100
21454314 G13
CMOS OUTPUTS
LVDS OUTPUTS
SAMPLE RATE (Msps)
0
10
0
20
30
70
60
50
40
IO
VDD
(mA)
25
50
75
125
100
21454314 G14
3.5mA LVDS
1.75mA LVDS
1.8V CMOS
SENSE PIN (V)
0.6
71
72
69
70
68
67
66
74
73
SNR
(dBFS)
0.8
1
0.7
0.9
1.1
1.2
1.3
21454314 G15
OUTPUT CODE
–2.0
–1.0
–0.5
–1.5
INL
ERROR
(LSB)
0.5
0
1.0
1.5
2.0
21454314 G16
0
4096
8192
12288
16384
OUTPUT CODE
–1.0
–0.4
–0.2
–0.6
–0.8
DNL
ERROR
(LSB)
0
0.4
0.2
0.6
0.8
1.0
21454314 G17
0
4096
8192
12288
16384
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE
(dBFS) –50
–30
–40
–20
–10
0
10
20
30
40
50
21454314 G1
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