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LTC6945 Datenblatt(PDF) 4 Page - Linear Technology

Teilenummer LTC6945
Bauteilbeschribung  16-Bit, 20Msps Low Noise Dual ADC
PDF  36 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC6945 Datenblatt(HTML) 4 Page - Linear Technology

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LTC2270
4
2270f
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 2.1
VP-P
VIN(CM)
Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8)
l
0.65
VCM
VCM + 200mV
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, 20Msps
32
μA
IIN1
Analog Input Leakage Current (No Encode)
0 < AIN+, AIN– < VDD
l
–1
1
μA
IIN2
PAR/SER Input Leakage Current
0 < PAR/SER < VDD
l
–1
1
μA
IIN3
SENSE Input Leakage Current
0.625 < SENSE < 1.3V
l
–2
2
μA
tAP
Sample-and-Hold Acquisition Delay Time
0
ns
tJITTER
Sample-and-Hold Acquisition Delay Jitter
Single-Ended Encode
Differential Encode
85
100
fsRMS
fsRMS
CMRR
Analog Input Common Mode Rejection Ratio
80
dB
BW-3B
Full-Power Bandwidth
Figure 5 Test Circuit
200
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
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
l
16
Bits
Integral Linearity Error
Differential Analog Input (Note 6)
l
–2.3
±1
2.3
LSB
Differential Linearity Error
Differential Analog Input
l
–0.8
±0.2
0.8
LSB
Offset Error
(Note 7)
l
–7
±1.3
7
mV
Gain Error
Internal Reference
External Reference
l
–1.6
±1.2
–0.3
1
%FS
%FS
Offset Drift
±10
μV/°C
Full-Scale Drift
Internal Reference
External Reference
±30
±10
ppm/°C
ppm/°C
Gain Matching
l
–0.2
±0.06
0.2
%FS
Offset Matching
l
–10
±1.5
10
mV
Transition Noise
1.44
LSBRMS



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