LTC1864/LTC1865
4
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CONVERTER AND MULTIPILEXER CHARACTERISTICS
LTC1864/LTC1865
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 87 dB
S/(N + D) Signal-to-Noise Plus Distortion Ratio 10kHz Input Signal
100kHz Input Signal
83
76
dB
dB
THD Total Harmonic Distortion Up to 5th Harmonic 10kHz Input Signal
100kHz Input Signal
88
77
dB
dB
Full Power Bandwidth 20 MHz
Full Linear Bandwidth S/(N+D) ≥ 75dB 125 kHz
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C.
V
CC
= 5V, V
REF
= 5V, f
SCK
= f
SCK(MAX)
as defi ned in Recommended Operating Conditions, unless otherwise noted.
PARAMETER CONDITIONS
LTC1864/LTC1865 LTC1864A/LTC1865A
UNITSMIN TYP MAX MIN TYP MAX
Resolution
l
16 16 Bits
No Missing Codes Resolution
l
14 15 Bits
INL (Note 3)
H-Grade (Note 3)
l
l
±8
±8.5
±6
±6.5
LSB
LSB
Transition Noise 1.1 1.1 LSB
RMS
Gain Error
l
±20 ±20 mV
Offset Error LTC1864 SO-8 and MSOP, LTC1865 MSOP
LTC1865 SO-8
l
l
±2
±3
±5
±7
±2
±3
±5
±7
mV
mV
Input Differential Voltage Range V
IN
= IN
+
– IN
–
l
0V
REF
0V
REF
V
Absolute Input Range IN
+
Input
IN
–
Input
–0.05
–0.05
V
CC
+ 0.05
V
CC
/2
–0.05
–0.05
V
CC
+ 0.05
V
CC
/2
V
V
V
REF
Input Range LTC1864 SO-8 and MSOP,
LTC1865 MSOP
1V
CC
1V
CC
V
Analog Input Leakage Current (Note 4)
l
±1 ±1 μA
C
IN
Input Capacitance In Sample Mode
During Conversion
12
5
12
5
pF
pF
DYNAMIC ACCURACY
T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, f
SAMPLE
= 250kHz, unless otherwise noted.
