Datasheet

LTC1665/LTC1660
3
166560fa
ELECTRICAL CHARACTERISTICS
The l denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V to 5.5V, V
REF
≤ V
CC
, V
OUT
unloaded, unless otherwise noted.
The
l denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 2.7V to 5.5V, V
REF
≤ V
CC
, V
OUT
unloaded, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS
LTC1665 LTC1660
UNITSMIN TYP MAX MIN TYP MAX
Accuracy
Resolution
l
8 10 Bits
Monotonicity V
REF
≤ V
CC
– 0.1V (Note 2)
l
8 10 Bits
DNL Differential Nonlinearity V
REF
≤ V
CC
– 0.1V (Note 2)
l
±0.1 ±0.5 ±0.2 ±0.75 LSB
INL Integral Nonlinearity V
REF
≤ V
CC
– 0.1V (Note 2)
l
±0.2 ±1.0 ±0.6 ±2.5 LSB
V
OS
Offset Error (Note 7)
l
±10 ±30 ±10 ±30 mV
V
OS
Temperature Coefficient
l
±15 ±15 μV/°C
FSE Full-Scale Error V
CC
= 5V, V
REF
= 4.096V
l
±1 ±4 ±3 ±15 LSB
Full-Scale Error Temperature Coefficient
l
±30 ±30 μV/°C
PSR Power Supply Rejection V
REF
= 2.5V 0.045 0.18 LSB/V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
Input Voltage Range
l
0V
CC
V
Resistance Not in Sleep Mode
l
35 65 kΩ
Capacitance (Note 6) 15 pF
I
REF
Reference Current Sleep Mode
l
0.001 1 μA
Power Supply
V
CC
Positive Supply Voltage For Specified Performance
l
2.7 5.5 V
I
CC
Supply Current V
CC
= 5V (Note 3)
V
CC
= 3V (Note 3)
Sleep Mode (Note 3)
l
l
l
450
340
1
730
530
3
μA
μA
μA
DC Performance
Short-Circuit Current Low V
OUT
= 0V, V
CC
= 5.5V, V
REF
= 5.1V, Code = Full
Scale
l
10 30 100 mA
Short-Circuit Current High V
OUT
= V
CC
= 5.5V, V
REF
= 5.1V, Code = 0
l
10 27 120 mA
AC Performance
Voltage Output Slew Rate Rising (Notes 4, 5)
Falling (Notes 4, 5)
0.60
0.25
V/μs
V/μs
Voltage Output Settling Time To ±0.5LSB (Notes 4, 5) 30 μs
Capacitive Load Driving 1000 pF
Digital I/O
V
IH
Digital Input High Voltage V
CC
= 2.7V to 5.5V
V
CC
= 2.7V to 3.6V
l
l
2.4
2.0
V
V
V
IL
Digital Input Low Voltage V
CC
= 4.5V to 5.5V
V
CC
= 2.7V to 5.5V
l
l
0.8
0.6
V
V
V
OH
Digital Output High Voltage I
OUT
= –1mA, D
OUT
Only
l
V
CC
– 1 V
V
OL
Digital Output Low Voltage I
OUT
= 1mA, D
OUT
Only
l
0.4 V
I
LK
Digital Input Leakage V
IN
= GND to V
CC
l
±10 μA
C
IN
Digital Input Capacitance (Note 6)
l
10 pF