Datasheet

LTC2754
4
2754f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
DD
Supply Voltage
●
2.7 5.5 V
I
DD
Supply Current, V
DD
Digital Inputs = 0V or V
DD
●
0.5 1 A
Digital Inputs
V
IH
Digital Input High Voltage 3.3V ≤ V
DD
≤ 5.5V
2.7V ≤ V
DD
< 3.3V
●
●
2.4
2
V
V
V
IL
Digital Input Low Voltage 4.5V < V
DD
≤ 5.5V
2.7V ≤ V
DD
≤ 4.5V
●
●
0.8
0.6
V
V
Hysteresis Voltage 0.1 V
I
IN
Digital Input Current V
IN
= GND to V
DD
●
±1 µA
C
IN
Digital Input Capacitance V
IN
= 0V (Note 11)
●
6pF
Digital Outputs
V
OH
I
OH
= 200µA 2.7V ≤ V
DD
≤ 5.5V
●
V
DD
– 0.4 V
V
OL
I
OL
= 200µA 2.7V ≤ V
DD
≤ 5.5V
●
0.4 V
TIMING CHARACTERISTICS
The ● denotes specifi cations that apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
= 4.5V to 5.5V
t
1
SDI Valid to SCK Set-Up
●
7ns
t
2
SDI Valid to SCK Hold
●
7ns
t
3
SCK High Time
●
11 ns
t
4
SCK Low Time
●
11 ns
t
5
CS/LD Pulse Width
●
9ns
t
6
LSB SCK High to CS/LD High
●
4ns
t
7
CS/LD Low to SCK Positive Edge
●
4ns
t
8
CS/LD High to SCK Positive Edge
●
4ns
t
9
SRO Propagation Delay C
LOAD
= 10pF
●
18 ns
t
10
CLR Pulse Width Low
●
36 ns
t
11
LDAC Pulse Width Low
●
15 ns
t
12
CLR Low to RFLAG Low C
LOAD
= 10pF (Note 11)
●
50 ns
t
13
CS/LD High to RFLAG High C
LOAD
= 10pF (Note 11)
●
40 ns
SCK Frequency 50% Duty Cycle (Note 12)
●
40 MHz
V
DD
= 2.7V to 3.3V
t
1
SDI Valid to SCK Set-Up
●
9ns
t
2
SDI Valid to SCK Hold (Note 11)
●
9ns
t
3
SCK High Time C
L
= 10pF
●
15 ns
t
4
SCK Low Time
●
15 ns
t
5
CS/LD Pulse Width
●
12 ns
t
6
LSB SCK High to CS/LD High
●
5ns
ELECTRICAL CHARACTERISTICS
V
DD
= 5V, V
REF
= 5V unless otherwise specifi ed. The ● denotes the
specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C.