TS9001
PIN FUNCTIONS
TS9001-1
TS9001-2
SC70-5
1
2
3
4
—
5
—
NAME
OUT
VEE
IN+
REF/IN-
REF
VCC
IN-
FUNCTION
Comparator Output
Negative Supply Voltage
Comparator Noninverting Input
1.252V Reference Output/Comparator Inverting Input
1.252V Reference Output
Positive Supply Voltage
Comparator Inverting Input
BLOCK DIAGRAMS
DESCRIPTION OF OPERATION
Guaranteed to operate from +1.6V supplies, the
TS9001-1 and the TS9001-2 analog comparators
only draw 600nA supply current, feature a robust
input stage that can tolerate input voltages 200mV
beyond the power supply rails, and include an on-
board +1.252V ±1% voltage reference. To insure
clean output switching behavior, both analog
comparators feature 4mV internal hysteresis. The
TS9001-1’s push-pull output drivers were designed
to minimize supply-current surges while driving
±5mA loads with rail-to-rail output swings. The open-
drain output stage TS9001-2 can be connected to
supply voltages above V
CC
to an absolute maximum
of 6V above V
EE
. Where wired-OR logic connections
are needed, their open-drain output stages make it
easy to use this analog comparator.
Input Stage Circuitry
The robust design of the analog comparators’ input
stage can accommodate any differential input
voltage from V
EE
- 0.2V to V
CC
+ 0.2V. Input bias
currents are typically ±0.15nA so long as the applied
input voltage remains between the supply rails. ESD
protection diodes - connected internally to the supply
rails - protect comparator inputs against overvoltage
conditions. However, if the applied input voltage
exceeds either or both supply rails, an increase in
input current can occur when these ESD protection
diodes start to conduct.
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TS9001DS r1p0
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
