LTC6702
3
6702fa
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
+
Supply Voltage Guaranteed by PSRR
l
1.7 5.5 V
I+ Supply Current per Comparator V
+
= 3V
l
24 30
40
µA
µA
V
+
= 5V
l
25 32
42
µA
µA
V
OS
Input Offset Voltage (Note 5)
LTC6702C/LTC6702I
LTC6702H
l
l
1 3.5
5
6
mV
mV
mV
V
HYST
Input Hysteresis Voltage (Note 5)
LTC6702C/LTC6702I
LTC6702H
l
l
2.5
1.6
1.6
4.3 6.2
7.2
8.2
mV
mV
mV
∆V
OS
/∆T Input Offset Voltage Drift (Note 5)
l
6
µV/
°C
I
IN
Input Leakage Current
LTC6702C/LTC6702I
LTC6702H
l
l
0.001
1
10
nA
nA
nA
CMRR Common Mode Rejection Ratio V
CM
= –0.1V to V
DD
– 1.2V
l
58
56
70 dB
dB
Input Voltage Range Guaranteed by CMRR
l
–0.1 V
DD
– 1.2 V
PSRR Power Supply Rejection Ratio V
+
= 1.7V to 5.5V, V
CM
= 0.5V
l
56
54
65 dB
dB
V
OL
Output Swing Low Overdrive = 20mV (Note 6)
I
SINK
= 100µA
I
SINK
= 15mA
l
l
10
250
mV
mV
mV
V
OH
Output Swing High Overdrive = 20mV (Note 6)
I
SOURCE
= 100µA
I
SOURCE
= 15mA
l
l
10
350
mV
mV
mV
t
PD
Propagation Delay (Note 7)
l
320 450
500
ns
ns
∆t
PD
Differential Propagation Delay Between Channels 4 ns
t
SKEW
Propagation Delay Skew Between t
PDLH
/t
PDHL
4 ns
t
r
Output Rise Time 11 ns
t
f
Output Fall Time 15 ns
f
MAX
Maximum Toggle Frequency 3.2 MHz
I
SC
Short-Circuit Current V
+
= 5V ±250 mA
The l denotes the specifi cations which apply over the full specifi ed
temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
CM
= 1.5V, C
OUT
= 20pF, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum. This depends on the power supply voltage and
how many comparators are shorted. The θ
JA
specifi ed for the DC and
TS packages is with minimal PCB heat spreading metal. Using expanded
metal area on all layers of a board reduces this value.
Note 3: The LTC6702C and LTC6702I are guaranteed functional over
the temperature range of –40°C to 85°C. The LTC6702H is guaranteed
functional over the operating temperature range of –40°C to 125°C.
Note 4: The LTC6702C is guaranteed to meet specifi ed performance from
0°C to 70°C. The LTC6702C is designed, characterized and expected to
meet specifi ed performance from –40°C to 85°C but is not tested or
QA sampled at these temperatures. The LTC6702I is guaranteed to meet
specifi ed performance from –40°C to 85°C. The LTC6702H is guaranteed
to meet specifi ed performance from –40°C to 125°C.
Note 5: The LTC6702 comparators include internal hysteresis. The offset
voltage is defi ned as the average of the input voltages (trip points)
required to change the output in each direction minus V
CM
, while the
hysteresis voltage is the difference of these trip points.
Note 6: Output voltage swings are measured between the output and
power supply rails.
Note 7: Propagation delay is for 200mV steps, and 50mV of overdrive.
Overdrive is measured relative to the positive and negative trip points.
