Datasheet

LTC1407/LTC1407A
4
1407fb
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.
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
f
SAMPLE(MAX)
Maximum Sampling Frequency per Channel
(Conversion Rate)
l
1.5 MHz
t
THROUGHPUT
Minimum Sampling Period (Conversion + Acquisiton Period)
l
667 ns
t
SCK
Clock Period (Note 16)
l
19.6 10000 ns
t
CONV
Conversion Time (Note 6) 32 34 SCLK cycles
t
1
Minimum Positive or Negative SCLK Pulse Width (Note 6) 2 ns
t
2
CONV to SCK Setup Time (Notes 6, 10) 3 10000 ns
t
3
SCK Before CONV (Note 6) 0 ns
t
4
Minimum Positive or Negative CONV Pulse Width (Note 6) 4 ns
t
5
SCK to Sample Mode (Note 6) 4 ns
t
6
CONV to Hold Mode (Notes 6, 11) 1.2 ns
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
Active Mode (LTC1407H/LTC1407AH)
Nap Mode
Nap Mode (LTC1407H/LTC1407AH)
Sleep Mode (LTC1407/LTC1407H)
Sleep Mode (LTC1407A/LTC1407AH)
l
l
l
l
4.7
5.2
1.1
1.2
2.0
2.0
7.0
8.0
1.5
1.8
15
10
mA
mA
mA
mA
µA
µA
PD Active Mode with SCK in Fixed State (Hi or Lo) 12 mW
TIMING CHARACTERISTICS
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.