参数资料
型号: LTC2285CUP#PBF
厂商: Linear Technology
文件页数: 18/24页
文件大小: 0K
描述: IC ADC DUAL 14BIT 125MSPS 64QFN
标准包装: 40
位数: 14
采样率(每秒): 125M
数据接口: 并联
转换器数目: 2
功率耗散(最大): 915mW
电压电源: 单电源
工作温度: 0°C ~ 70°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: 管件
输入数目和类型: 2 个单端,双极; 2 个差分, 双极
LTC2285
3
2285fb
ANALOG INPUT The l denotes the specications which apply over the full operating temperature range, otherwise
specications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (AIN+ –AIN–)
2.85V < VDD < 3.4V (Note 7)
±0.5V to ±1V
V
VIN,CM
Analog Input Common Mode (AIN+ +AIN–)/2
Differential Input Drive (Note 7)
Single Ended Input Drive (Note 7)
1
0.5
1.5
1.9
2
V
IIN
Analog Input Leakage Current
0V < AIN+, AIN– < VDD
–1
1
μA
ISENSE
SENSEA, SENSEB Input Leakage
0V < SENSEA, SENSEB < 1V
–3
3
μA
IMODE
MODE Input Leakage Current
0V < MODE < VDD
–3
3
μA
tAP
Sample-and-Hold Acquisition Delay Time
0
ns
tJITTER
Sample-and-Hold Acquisition Delay Time Jitter
0.2
psRMS
CMRR
Analog Input Common Mode Rejection Ratio
80
dB
Full Power Bandwidth
Figure 8 Test Circuit
640
MHz
DYNAMIC ACCURACY The l denotes the specications which apply over the full operating temperature range,
otherwise specications are at TA = 25°C. AIN = –1dBFS. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
72.4
dB
30MHz Input
72.3
dB
70MHz Input
68.9
72.2
dB
140MHz Input
71.7
dB
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
88
dB
30MHz Input
85
dB
70MHz Input
70
82
dB
140MHz Input
78
dB
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
90
dB
30MHz Input
90
dB
70MHz Input
77
90
dB
140MHz Input
90
dB
S/(N+D)
Signal-to-Noise Plus Distortion Ratio
5MHz Input
72.2
dB
30MHz Input
72
dB
70MHz Input
67
71.9
dB
140MHz Input
70.2
dB
IMD
Intermodulation Distortion
fIN = 40MHz, 41MHz
85
dB
Crosstalk
fIN = 100MHz
–110
dB
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. (Note 4)
CONVERTER CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Gain Matching
External Reference
±0.3
%FS
Offset Matching
±2
mV
Transition Noise
SENSE = 1V
1.3
LSBRMS
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