Datasheet

LTC1407-1/LTC1407A-1
4
14071fb
INTERNAL REFERENCE CHARACTERISTICS
T
A
= 25°C. V
DD
= 3V.
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. V
DD
= 3V.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.5 V
V
REF
Output Tempco 15 ppm/°C
V
REF
Line Regulation V
DD
= 2.7V to 3.6V, V
REF
= 2.5V 600 µV/V
V
REF
Output Resistance Load Current = 0.5mA 0.2 Ω
V
REF
Setting Time 2ms
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 3.3V
l
2.4 V
V
IL
Low Level Input Voltage V
DD
= 2.7V
l
0.6 V
I
IN
Digital Input Current V
IN
= 0V to V
DD
l
±10 µA
C
IN
Digital Input Capacitance 5pF
V
OH
High Level Output Voltage V
DD
= 3V, I
OUT
= –200µA
l
2.5 2.9 V
V
OL
Low Level Output Voltage V
DD
= 2.7V, I
OUT
= 160µA
V
DD
= 2.7V, I
OUT
= 1.6mA
l
0.05
0.10 0.4
V
V
I
OZ
Hi-Z Output Leakage D
OUT
V
OUT
= 0V to V
DD
l
±10 µA
C
OZ
Hi-Z Output Capacitance D
OUT
1pF
I
SOURCE
Output Short-Circuit Source Current V
OUT
= 0V, V
DD
= 3V 20 mA
I
SINK
Output Short-Circuit Sink Current V
OUT
= V
DD
= 3V 15 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. With internal reference, V
DD
= 3V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Supply Voltage 2.7 3.6 V
I
DD
Supply Current Active Mode, f
SAMPLE
= 1.5Msps
Nap Mode
Sleep Mode (LTC1407)
Sleep Mode (LTC1407A)
l
l
4.7
1.1
2.0
2.0
7.0
1.5
15
10
mA
mA
µA
µA
PD Power Dissipation Active Mode with SCK in Fixed State (Hi or Lo) 12 mW