Техническая Спецификация для Linear Technology LTC2378-20, 20-Bit, 1Msps, SAR ADC with 104dB SNR. Req DC590 or DC890 DC1925A-A DC1925A-A
Модели
DC1925A-A
LTC2378-20
3
237820f
DynaMic accuracy
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SINAD
Signal-to-(Noise + Distortion) Ratio
f
IN
= 2kHz, V
REF
= 5V
l
101
104
dB
SNR
Signal-to-Noise Ratio
f
IN
= 2kHz, V
REF
= 5V
f
IN
= 2kHz, V
REF
= 5V, REF/DGC = GND
f
IN
= 2kHz, V
REF
= 2.5V
l
l
l
101
99
95.4
104
102
98
dB
dB
dB
THD
Total Harmonic Distortion
f
IN
= 2kHz, V
REF
= 5V
f
IN
= 2kHz, V
REF
= 5V, REF/DGC = GND
f
IN
= 2kHz, V
REF
= 2.5V
l
l
l
–125
–125
–123
–114
–114
–113
dB
dB
dB
SFDR
Spurious Free Dynamic Range
f
IN
= 2kHz, V
REF
= 5V
l
115
128
dB
–3dB Input Bandwidth
34
MHz
Aperture Delay
500
ps
Aperture Jitter
4
ps
Transient Response
Full-Scale Step
312
ns
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C and A
IN
= –1dBFS. (Notes 4, 8)
elecTrical characTerisTics
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
+
Absolute Input Range (IN
+
)
(Note 5)
l
–0.1
V
REF
+ 0.1
V
V
IN
–
Absolute Input Range (IN
–
)
(Note 5)
l
–0.1
V
REF
+ 0.1
V
V
IN
+ – V
IN
– Input Differential Voltage Range
V
IN
= V
IN
+ – V
IN
–
l
–V
REF
+V
REF
V
V
CM
Common-Mode Input Range
l
V
REF
/2–
0.1
V
REF
/2
V
REF
/2+
0.1
V
I
IN
Analog Input Leakage Current
0.01
µA
C
IN
Analog Input Capacitance
Sample Mode
Hold Mode
45
5
pF
pF
CMRR
Input Common Mode Rejection Ratio
f
IN
= 500kHz
86
dB
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
converTer characTerisTics
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution
l
20
Bits
No Missing Codes
l
20
Bits
Transition Noise
2.3
ppm
RMS
INL
Integral Linearity Error
(Note 6)
REF/DGC = GND, (Note 6)
l
l
–2
–2
±0.5
±0.5
2
2
ppm
ppm
DNL
Differential Linearity Error
(Note 10)
l
–0.5
±0.2
0.5
ppm
BZE
Bipolar Zero-Scale Error
(Note 7)
l
–13
0
13
ppm
Bipolar Zero-Scale Error Drift
±7
ppb/°C
FSE
Bipolar Full-Scale Error
(Note 7)
l
–100
±10
100
ppm
Bipolar Full-Scale Error Drift
±0.05
ppm/°C
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)