Datasheet

LTC2308
4
2308fb
INTERNAL REFERENCE CHARACTERISTICS
The l denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0
l
2.47 2.50 2.53 V
V
REF
Output Tempco I
OUT
= 0 ±25 ppm/°C
V
REF
Output Impedance –0.1mA ≤ I
OUT
≤ 0.1mA 8 kΩ
V
REFCOMP
Output Voltage I
OUT
= 0 4.096 V
V
REF
Line Regulation AV
DD
= 4.75V to 5.25V 0.8 mV/V
DIGITAL INPUTS AND DIGITAL OUTPUTS
The l denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage DV
DD
= 5.25V
l
2.4 V
V
IL
Low Level Input Voltage DV
DD
= 4.75V
l
0.8 V
I
IN
High Level Input Current V
IN
= V
DD
l
±10 μA
C
IN
Digital Input Capacitance 5pF
V
OH
High Level Output Voltage OV
DD
= 4.75V, I
OUT
= –10μA
OV
DD
= 4.75V, I
OUT
= –200μA
l
4
4.74 V
V
V
OL
Low Level Input Voltage OV
DD
= 4.75V, I
OUT
= 160μA
OV
DD
= 4.75V, I
OUT
= 1.6mA
l
0.05
0.4
V
V
I
OZ
Hi-Z Output Leakage V
OUT
= 0V to OV
DD
, CONVST High
l
±10 μA
C
OZ
Hi-Z Output Capacitance CONVST High 15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= OV
DD
10 mA
POWER REQUIREMENTS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
AV
DD
Analog Supply Voltage 4.75 5 5.25 V
DV
DD
Digital Supply Voltage 4.75 5 5.25 V
OV
DD
Output Driver Supply Voltage 2.7 5.25 V
I
DD
Supply Current
Nap Mode
Sleep Mode
C
L
= 25pF
CONVST = 5V, Conversion Done
CONVST = 5V, Conversion Done
l
l
l
3.5
180
7
4.2
400
20
mA
μA
μA
P
D
Power Dissipation
Nap Mode
Sleep Mode
17.5
0.9
35
mW
mW
μW