INTERNAL REFERENCE CHARACTERISTICS The l" />
參數(shù)資料
型號: LTC2145IUP-14#TRPBF
廠商: Linear Technology
文件頁數(shù): 34/38頁
文件大小: 0K
描述: IC ADC DUAL 14BIT 125MSPS 64-QFN
標準包裝: 2,000
位數(shù): 14
采樣率(每秒): 125M
數(shù)據(jù)接口: 并聯(lián),串行,SPI
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 360mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 64-QFN(9x9)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個差分
配用: DC890B-ND - BOARD USB DATA COLLECTION
5
21454314fa
LTC2145-14/
LTC2144-14/LTC2143-14
INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
IOUT = 0
0.5 VDD – 25mV
0.5 VDD
0.5 VDD + 25mV
V
VCM Output Temperature Drift
±25
ppm/°C
VCM Output Resistance
–600μA < IOUT < 1mA
4
Ω
VREF Output Voltage
IOUT = 0
1.225
1.250
1.275
V
VREF Output Temperature Drift
±25
ppm/°C
VREF Output Resistance
–400μA < IOUT < 1mA
7
Ω
VREF Line Regulation
1.7V < VDD < 1.9V
0.6
mV/V
DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
LTC2145-14
LTC2144-14
LTC2143-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
SNR
Signal-to-Noise Ratio
5MHz Input
70MHz Input
140MHz Input
l 71.4
73.1
73
72.6
71.2
72.9
72.8
72.4
71.7
73.4
73.3
72.9
dBFS
SFDR
Spurious Free Dynamic Range
2nd Harmonic
5MHz Input
70MHz Input
140MHz Input
l
76
90
89
84
77
90
89
84
78
90
89
84
dBFS
Spurious Free Dynamic Range
3rd Harmonic
5MHz Input
70MHz Input
140MHz Input
l
79
90
89
84
79
90
89
84
81
90
89
84
dBFS
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
70MHz Input
140MHz Input
l
86
95
86
95
86
95
dBFS
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
5MHz Input
70MHz Input
140MHz Input
l 70.8
73
72.8
72.2
70.8
72.8
72.6
72
71.4
73.2
73.1
72.4
dBFS
Crosstalk
10MHz Input
–110
dBc
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