LTC2758
4
2758fa
For more information www.linear.com/LTC2758
TIMING CHARACTERISTICS The
l
denotes specifications that apply over the full operating temperature range,
otherwise specifications are at TA = 25°C.
ELECTRICAL CHARACTERISTICS V
DD = 5V, V(RINX) = 5V unless otherwise specified. The l denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
VDD
Supply Voltage
l
2.7
5.5
V
IDD
VDD Supply Current
Digital Inputs = 0V or VDD
l
0.5
2
μA
Digital Inputs
VIH
Digital Input High Voltage
3.3V ≤ VDD ≤ 5.5V
2.7V ≤ VDD < 3.3V
l
2.4
2
V
VIL
Digital Input Low Voltage
4.5V < VDD ≤ 5.5V
2.7V ≤ VDD ≤ 4.5V
l
0.8
0.6
V
Hysteresis Voltage
0.1
V
IIN
Digital Input Current
VIN = GND to VDD
l
±1
A
CIN
Digital Input Capacitance
VIN = 0V (Note 13)
l
6
pF
Digital Outputs
VOH
IOH = 200A
2.7V ≤ VDD ≤ 5.5V
l
VDD – 0.4
V
VOL
IOL = 200A
2.7V ≤ VDD ≤ 5.5V
l
0.4
V
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VDD = 4.5V to 5.5V
t1
SDI Valid to SCK Set-Up
l
7
ns
t2
SDI Valid to SCK Hold
l
7
ns
t3
SCK High Time
l
11
ns
t4
SCK Low Time
l
11
ns
t5
CS/LD Pulse Width
l
9
ns
t6
LSB SCK High to CS/LD High
l
4
ns
t7
CS/LD Low to SCK Positive Edge
l
4
ns
t8
CS/LD High to SCK Positive Edge
l
4
ns
t9
SRO Propagation Delay
CLOAD = 10pF
l
18
ns
t10
CLR Pulse Width Low
l
36
ns
t11
LDAC Pulse Width Low
l
15
ns
t12
CLR Low to RFLAG Low
CLOAD = 10pF (Note 13)
l
50
ns
t13
CS/LD High to RFLAG High
CLOAD = 10pF (Note 13)
l
40
ns
SCK Frequency
50% Duty Cycle (Note 14)
l
40
MHz
VDD = 2.7V to 3.3V
t1
SDI Valid to SCK Set-Up
l
9
ns
t2
SDI Valid to SCK Hold
(Note 13)
l
9
ns
t3
SCK High Time
CL = 10pF
l
15
ns
t4
SCK Low Time
l
15
ns
t5
CS/LD Pulse Width
l
12
ns
t6
LSB SCK High to CS/LD High
l
5
ns