Datasheet

LTC2631
6
2631fc
For more information www.linear.com/LTC2631
electrical 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
OUT
unloaded unless otherwise specified.
LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (V
FS
= 2.5V)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
Input Voltage Range
l
0 V
CC
V
Resistance
l
160 190 220 kΩ
Capacitance 7.5 pF
I
REF
Reference Current, Power-Down Mode DAC Powered Down
l
0.005 0.1 µA
Reference Output
Output Voltage
l
1.240 1.250 1.260 V
Reference Temperature Coefficient ±10 ppm/°C
Output Impedance 0.5 kΩ
Capacitive Load Driving 10 µF
Short-Circuit Current V
CC
= 5.5V; REF Shorted to GND 2.5 mA
Digital I/O
V
IL
Low Level Input Voltage (SDA and SCL) (Note 14)
l
–0.5 0.3V
CC
V
V
IH
High Level Input Voltage (SDA and SCL) (Note 11)
l
0.7V
CC
V
V
IL(CA n )
Low Level Input Voltage on CA n
(n = 0, 1)
See Test Cir
cuit 1
l
0.15V
CC
V
V
IH(CA n )
High Level Input Voltage on CA n
(n = 0, 1)
See Test Cir
cuit 1
l
0.85V
CC
V
R
INH
Resistance from CA n (n = 0, 1)
to V
CC
to Set CA n = V
CC
See Test Circuit 2
l
10 kΩ
R
INL
Resistance from CA n (n = 0, 1)
to GND to Set CA
n = GND
See Test Circuit 2
l
10 kΩ
R
INF
Resistance from CA n (n = 0, 1)
to V
CC
or GND to Set CA n = Float
See Test Circuit 2
l
2 MΩ
V
OL
Low Level Output Voltage Sink Current = 3mA
l
0 0.4 V
t
OF
Output Fall Time V
O
= V
IH(MIN)
to V
O
= V
IL(MAX)
,
C
B
= 10pF to 400pF (Note 12)
l
20 + 0.1C
B
250 ns
t
SP
Pulse Width of Spikes Suppressed by
Input Filter
l
0 50 ns
I
IN
Input Leakage 0.1V
CC
≤ V
IN
≤ 0.9V
CC
l
±1 µA
C
IN
I/O Pin Capacitance (Note 8)
l
10 pF
C
B
Capacitive Load for Each Bus Line
l
400 pF
C
CA n
External Capacitive Load on Address
Pin CA
n (n = 0, 1)
l
10 pF