Datasheet

3
LTC1864/LTC1865
18645f
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 83 dB
100kHz Input Signal 76 dB
THD Total Hamonic Distortion Up to 5th Harmonic 10kHz Input Signal 88 dB
100kHz Input Signal 77 dB
Full Power Bandwidth 20 MHz
Full Linear Bandwidth S/(N + D) ≥ 75dB 125 kHz
LTC1864/LTC1865 LTC1864A/LTC1865A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Offset Error LTC1864 SO-8 and MSOP, LTC1865 MSOP ● ±2 ±5 ±2 ±5mV
LTC1865 SO-8 ● ±3 ±7 ±3 ±7mV
Input Differential Voltage Range V
IN
= IN
+
– IN
–
● 0V
REF
0V
REF
V
Absolute Input Range IN
+
Input –0.05 V
CC
+ 0.05 –0.05 V
CC
+ 0.05 V
IN
–
Input –0.05 V
CC
/2 –0.05 V
CC
/2 V
V
REF
Input Range LTC1864 SO-8 and MSOP, 1 V
CC
1V
CC
V
LTC1865 MSOP
Analog Input Leakage Current (Note 4) ● ±1 ±1 µA
C
IN
Input Capacitance In Sample Mode 12 12 pF
During Conversion 5 5 pF
The ● denotes specifications which apply
over the full operating temperature range, otherwise specifications are T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, unless otherwise noted.
DY A IC ACCURACY
U
W
DIGITAL A D DC ELECTRICAL CHARACTERISTICS
U
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 5V, V
REF
= 5V, f
SCK
= f
SCK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
CO VERTER A D ULTIPLEXER CHARACTERISTICS
U
W
U
T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, f
SAMPLE
= 250kHz, unless otherwise noted.
LTC1864/LTC1865
SYMBOL PARAMETER CONDITION MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
CC
= 5.25V ● 2.4 V
V
IL
Low Level Input Voltage V
CC
= 4.75V ● 0.8 V
I
IH
High Level Input Current V
IN
= V
CC
● 2.5 µA
I
IL
Low Level Input Current V
IN
= 0V ● –2.5 µA
V
OH
High Level Output Voltage V
CC
= 4.75V, I
O
= 10µA ● 4.5 4.74 V
V
CC
= 4.75V, I
O
= 360µA ● 2.4 4.72 V
V
OL
Low Level Output Voltage V
CC
= 4.75V, I
O
= 1.6mA ● 0.4 V
I
OZ
Hi-Z Output Leakage CONV = V
CC
● ±3 µA
I
SOURCE
Output Source Current V
OUT
= 0V –25 mA
I
SINK
Output Sink Current V
OUT
= V
CC
20 mA
I
REF
Reference Current (LTC1864 SO-8 and CONV = V
CC
● 0.001 3 µA
MSOP, LTC1865 MSOP) f
SMPL
= f
SMPL(MAX)
● 0.05 0.1 mA
I
CC
Supply Current CONV = V
CC
After Conversion ● 0.001 3 µA
f
SMPL
= f
SMPL(MAX)
● 0.85 1.3 mA
P
D
Power Dissipation f
SMPL
= f
SMPL(MAX)
4.25 mW