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LTC2641 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC2641
Description  18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2641 Datasheet(HTML) 3 Page - Linear Technology

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LTC2379-18
3
237918p
DYNAMIC ACCURACY
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SINAD
Signal-to-(Noise + Distortion) Ratio
fIN = 2kHz
l
98
100.5
dB
SNR
Signal-to-Noise Ratio
fIN = 2kHz, VREF = 5V
fIN = 2kHz, VREF = 5V, REF/DGC = GND
fIN = 2kHz, VREF = 2.5V
l
98
101
99
96
dB
dB
dB
THD
Total Harmonic Distortion
fIN = 2kHz, VREF = 5V
fIN = 2kHz, VREF = 5V, REF/DGC = GND
fIN = 2kHz, VREF = 2.5V
l
–115
–118
TBD
TBD
dB
dB
dB
SFDR
Spurious Free Dynamic Range
fIN = 2kHz
120
dB
–3dB Input Bandwidth
TBD
MHz
Aperture Delay
TBD
ns
Aperture Jitter
TBD
ps
Transient Response
Full-Scale Step
200
ns
The
l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 4, 8)
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN+
Absolute Input Range (IN+)
(Note 5)
l
–0.05
VREF
V
VIN–
Absolute Input Range (IN–)
(Note 5)
l
–0.05
VREF
V
VIN+ – VIN– Input Differential Voltage Range
VIN = VIN+ – VIN–
l
–VREF
+VREF
V
VCM
Common-Mode Input Range
l
VREF/2–
0.05
VREF/2
VREF/2+
0.05
V
IIN
Analog Input Leakage Current
l
±1
μA
CIN
Analog Input Capacitance
Sample Mode
Hold Mode
45
5
pF
pF
CMRR
Input Common Mode Rejection Ratio
TBD
dB
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
CONVERTER CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution
l
18
Bits
No Missing Codes
l
18
Bits
Transition Noise
0.8
LSBRMS
INL
Integral Linearity Error
(Note 6)
l
–2
±1
2
LSB
DNL
Differential Linearity Error
l
–1
±0.4
1
LSB
BZE
Bipolar Zero-Scale Error
(Note 7)
l
–6
±0.25
6
LSB
Bipolar Zero-Scale Error Drift
3
mLSB/°C
FSE
Bipolar Full-Scale Error
(Note 7)
l
–14
±3
14
LSB
Bipolar Full-Scale Error Drift
±0.1
ppm/°C
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)



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