Datasheet

3
LTC1864L/LTC1865L
sn18645L 18645Lfs
LTC1864L/LTC1865L
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 82 dB
S/(N + D) Signal-to-Noise Plus Distortion Ratio 1kHz Input Signal 82 dB
THD Total Hamonic Distortion Up to 5th Harmonic 1kHz Input Signal 92 dB
Full Power Bandwidth 10 MHz
Full Linear Bandwidth S/(N + D) ≥ 75dB 20 kHz
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Offset Error ● ±2 ±5 ±2 ±5mV
Input Differential Voltage V
IN
= IN
+
– IN
–
● 0V
REF
0V
REF
V
Range
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 LTC1864L SO-8 and MSOP, LTC1865L MSOP 1 V
CC
1V
CC
V
Analog Input Leakage Current (Note 4) ● ±1 ±1 µA
C
IN
Input Capacitance In Sample Mode 12 12 pF
During Conversion 5 5 pF
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
= 2.7V, V
REF
= 2.5V, 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
= 3V, V
REF
= 3V, f
SAMPLE
= 150kHz, unless otherwise noted.
LTC1864L/LTC1865L
SYMBOL PARAMETER CONDITION MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
CC
= 3.3V ● 1.9 V
V
IL
Low Level Input Voltage V
CC
= 2.7V ● 0.45 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
= 2.7V, I
O
= 10µA ● 2.3 2.6 V
V
CC
= 2.7V, I
O
= 360µA ● 2.1 2.45 V
V
OL
Low Level Output Voltage V
CC
= 2.7V, I
O
= 400µA ● 0.3 V
I
OZ
Hi-Z Output Leakage CONV = V
CC
● ±3 µA
I
SOURCE
Output Source Current V
OUT
= 0V –6.5 mA
I
SINK
Output Sink Current V
OUT
= V
CC
6.5 mA
I
REF
Reference Current (LTC1864L SO-8 and CONV = V
CC
● 0.001 3 µA
MSOP, LTC1865L MSOP) f
SMPL
= f
SMPL(MAX)
● 0.01 0.1 mA
I
CC
Supply Current CONV = V
CC
After Conversion ● 0.5 10 µA
f
SMPL
= f
SMPL(MAX)
● 0.45 1.0 mA
P
D
Power Dissipation f
SMPL
= f
SMPL(MAX)
1.22 mW
LTC1864L/LTC1865L LTC1864LA/LTC1865LA
The ● denotes specifications which apply
over the full operating temperature range, otherwise specifications are T
A
= 25°C. V
CC
= 2.7V, V
REF
= 2.5V, unless otherwise noted.