Datasheet

3
LTC1658
V
CC
= 2.7V to 5.5V, V
OUT
unloaded, REF ≤ V
CC
, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Impedance to GND Input Code = 0 ● 70 200 Ω
Output Line Regulation Input Code = 16383, V
CC
= 2.7V to 5.5V, REF = 2.5V ● 1.5 mV/V
AC Performance
Voltage Output Slew Rate ● 0.35 1.0 V/µs
Voltage Output Settling Time (Note 3) to ±0.5LSB 12 µs
Digital Feedthrough 0.3 nV• s
Reference Input
R
IN
REF Input Resistance ● 30 60 kΩ
V
REF
REF Input Range (Notes 5, 6) ● 0V
CC
V
Digital I/O
V
IH
Digital Input High Voltage V
CC
= 5V ● 2.4 V
V
IL
Digital Input Low Voltage V
CC
= 5V ● 0.8 V
V
OH
Digital Output High Voltage V
CC
= 5V, I
OUT
= –1mA, D
OUT
Only ● V
CC
– 0.7 V
V
OL
Digital Output Low Voltage V
CC
= 5V, I
OUT
= 1mA, D
OUT
Only ● 0.4 V
V
IH
Digital Input High Voltage V
CC
= 3V ● 2.0 V
V
IL
Digital Input Low Voltage V
CC
= 3V ● 0.6 V
V
OH
Digital Output High Voltage V
CC
= 3V, I
OUT
= –1mA, D
OUT
Only ● V
CC
– 0.7 V
V
OL
Digital Output Low Voltage V
CC
= 3V, I
OUT
= 1mA, D
OUT
Only ● 0.4 V
I
LEAK
Digital Input Leakage V
IN
= GND to V
CC
● ±10 µA
C
IN
Digital Input Capacitance (Note 6) ● 10 pF
Switching (V
CC
= 4.5V to 5.5V)
t
1
D
IN
Valid to CLK Setup ● 40 ns
t
2
D
IN
Valid to CLK Hold ● 0ns
t
3
CLK High Time (Note 6) ● 40 ns
t
4
CLK Low Time (Note 6) ● 40 ns
t
5
CS/LD Pulse Width (Note 6) ● 50 ns
t
6
LSB CLK to CS/LD (Note 6) ● 40 ns
t
7
CS/LD Low to CLK (Note 6) ● 20 ns
t
8
D
OUT
Output Delay C
LOAD
= 15pF ● 5 100 ns
t
9
CLK Low to CS/LD Low (Note 6) ● 20 ns
Switching (V
CC
= 2.7V to 5.5V)
t
1
D
IN
Valid to CLK Setup ● 60 ns
t
2
D
IN
Valid to CLK Hold ● 0ns
t
3
CLK High Time (Note 6) ● 60 ns
t
4
CLK Low Time (Note 6) ● 60 ns
t
5
CS/LD Pulse Width (Note 6) ● 80 ns
t
6
LSB CLK to CS/LD (Note 6) ● 60 ns
t
7
CS/LD Low to CLK (Note 6) ● 30 ns
t
8
D
OUT
Output Delay C
LOAD
= 15pF ● 10 150 ns
t
9
CLK Low to CS/LD Low (Note 6) ● 30 ns