Datasheet

LTC2378-20
3
237820f
For more information www.linear.com/LTC2378-20
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)