TSM9117-TSM9120
PIN FUNCTIONS
TSM9117/TSM9118 TSM9119/TSM9120
NAME
FUNCTION
SC70
SO
6
4
SC70
SO
6
4
1
2
3
1
2
3
OUT
VEE
IN+
Comparator Output
Negative Supply Voltage
3
3
Comparator Noninverting Input
1.252V Reference Output and
Comparator Inverting Input
Positive Supply Voltage
Comparator Inverting Input
No Connection. Not internally connected.
4
2
—
—
REF
5
—
—
7
—
1, 5, 8
5
4
—
7
2
VCC
IN-
NC
1, 5, 8
BLOCK DIAGRAMS
DESCRIPTION OF OPERATION
Guaranteed to operate from +1.6V supplies, the
TSM9117 and the TSM9118 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
±1.75% voltage reference. The comparator-only
TSM9119 and the TSM9120 have the same attributes
and only draw a supply current of 350nA. To insure
clean output switching behavior, all four analog
comparators feature 4mV internal hysteresis. The
TSM9117 and the TSM9119’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
TSM9118 and TSM9120 can be connected to supply
voltages above VCC to an absolute maximum of 6V
above VEE. Where wired-OR logic connections are
needed, their open-drain output stages make it easy
to use these analog comparators.
Input Stage Circuitry
The robust design of the analog comparators’ input
stage can accommodate any differential input voltage
from VEE - 0.2V to VCC + 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.
TSM9117_20DS r1p0
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RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
