参数资料
型号: LTC2145IUP-14#PBF
厂商: Linear Technology
文件页数: 33/38页
文件大小: 0K
描述: IC ADC DUAL 14BIT 125MSPS 64-QFN
标准包装: 40
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: 管件
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
4
21454314fa
ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (AIN+ – AIN–)
1.7V < VDD < 1.9V
l
1 to 2
VP-P
VIN(CM)
Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8)
l
0.7
VCM
1.25
V
VSENSE
External Voltage Reference Applied to SENSE External Reference Mode
l
0.625
1.250
1.300
V
IINCM
Analog Input Common Mode Current
Per Pin, 125Msps
Per Pin, 105Msps
Per Pin, 80Msps
155
130
100
μA
IIN1
Analog Input Leakage Current (No Encode)
0 < AIN+, AIN– < VDD
l
–1.5
1.5
μA
IIN2
PAR/SER Input Leakage Current
0 < PAR/SER < VDD
l
–3
3
μA
IIN3
SENSE Input Leakage Current
0.625 < SENSE < 1.3V
l
–3
3
μA
tAP
Sample-and-Hold Acquisition Delay Time
0
ns
tJITTER
Sample-and-Hold Acquisition Delay Jitter
Single-Ended Encode
Differential Encode
0.08
0.10
psRMS
CMRR
Analog Input Common Mode Rejection Ratio
80
dB
BW-3B
Full-Power Bandwidth
Figure 6 Test Circuit
750
MHz
CONVERTER 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
LTC2145-14
LTC2144-14
LTC2143-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
Resolution (No Missing Codes)
l
14
Bits
Integral Linearity Error
Differential Analog Input (Note 6)
l –2.6
±1
2.6
–2.6
±1
2.6
–2.6
±1
2.6
LSB
Differential Linearity Error
Differential Analog Input
l –0.9
±0.3
0.9
–0.9
±0.3
0.9
–0.8
±0.3
0.8
LSB
Offset Error
(Note 7)
l
–9
±1.5
9
–9
±1.5
9
–9
±1.5
9
mV
Gain Error
Internal Reference
External Reference
l –1.8
±1.5
–0.4
0.9
–1.5
±1.5
–0.3
1.1
–1.5
±1.5
–0.3
1.1
%FS
Offset Drift
±10
μV/°C
Full-Scale Drift
Internal Reference
External Reference
±30
±10
±30
±10
±30
±10
ppm/°C
Gain Matching
±0.2
%FS
Offset Matching
±1.5
mV
Transition Noise
1.25
1.28
1.20
LSBRMS
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