TS9002

TS9002DS r1p0

Page 7

RTFDS

PIN FUNCTIONS

BLOCK DIAGRAM

THEORY OF OPERATION

The TS9002 dual, low-voltage, micropower analog

comparator

provides

excellent

flexibility

and

performance while sourcing continuously up to

40mA of current. The TS9002 draws less than

5.5µA (total) over temperature for both comparators,

including the reference. It also exhibits an input

offset voltage of ±3.5mV, and has an on-board

+1.182V ±0.75% voltage reference. To minimize

glitches that can occur with parasitic feedback or a

less than optimal board layout, the design of the

TS9002 output stage is optimized to eliminate

crowbar glitches as the output switches. To minimize

current

consumption

while

providing

flexibility,

TS9002 has an on-board HYST pin in order to add

additional hysteresis.

Power-Supply and Input Signal Ranges

The TS9002 can operate from a single supply

voltage range of +2.5V to +11V, provides a wide

common mode input voltage range of V- to V+-1.3V,

and accepts input signals ranging from V- to

V+ - 1V. The inputs can accept an input as much as

300mV above and below the power supply rails

without damage to the part. The TS9002 is TTL

compatible with a single +5V supply.

Comparator Output

The output design of the TS9002 can source and

sink more than 40mA and 5mA, respectively, while

simultaneously maintaining a quiescent current less

TS9002

NAME

FUNCTION

MSOP-8

1

OUTA

Comparator A Output. Sinks and sources current. Swings from V+ to V-.

2

V-

Negative Supply Voltage. Connect to ground for single-supply operation.

3

INA+

Comparator A Noninverting Input

4

INB-

Comparator B Inverting Input

5

HYST

Hysteresis Input. Connect to REF if not used. Input voltage range is from

VREF to (VREF - 50mV).

6

REF

1.182V Reference Output with respect to V-.

7

V+

Positive Supply Voltage

8

OUTB

Comparator B Output. Sinks and sources current. Swings from V+ to V-.