Datasheet

LTC1661
3
1661fa
ELECTRICAL CHARACTERISTICS
TIMING CHARACTERISTICS
The l denotes the 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 the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
Input Voltage Range
l
0 V
CC
V
Resistance Active Mode
l
140 260 kΩ
Capacitance
l
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
= 5V (Note 3)
Sleep Mode (Note 3)
l
l
l
120
95
1
195
154
3
µA
µA
µA
DC Performance
Short-Circuit Current Low V
OUT
= 0V, V
CC
= V
REF
= 5V, Code = 1023
l
10 25 100 mA
Short-Circuit Current High V
OUT
= V
CC
= V
REF
= 5V, Code = 0
l
7 19 120 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
I
LK
Digital Input Leakage V
IN
= GND to V
CC
l
±10 µA
C
IN
Digital Input Capacitance (Note 6)
l
10 pF
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
= 4.5V to 5.5V
t
1
D
IN
Valid to SCK Setup
l
40 ns
t
2
D
IN
Valid to SCK Hold
l
0 ns
t
3
SCK High Time (Note 6)
l
30 ns
t
4
SCK Low Time (Note 6)
l
30 ns
t
5
CS/LD Pulse Width (Note 6)
l
80 ns
t
6
LSB SCK High to CS/LD High (Note 6)
l
30 ns
t
7
CS/LD Low to SCK High (Note 6)
l
20 ns
t
9
SCK Low to CS/LD Low (Note 6)
l
0 ns
t
11
CS/LD High to SCK Positive Edge (Note 6)
l
20 ns
SCK Frequency Square Wave (Note 6)
l
16.7 MHz