HT9274 Datasheet, PDF (1/6 Pages) Holtek Semiconductor Inc – Quad Micropower Op Amp

HT9274
Quad Micropower Op Amp
Features
· Quad micro power op amp
· Wide range of supply voltage: 1.6V~5.5V
· High input impedance
· Single supply operation
· Low current consumption: < 5mA per amp
· Rail to rail output
· Provides both sink and source output drive
capability
Applications
· Battery powered system
· Sensor amplifier
· Low power gain blocks
· Low power comparators
· Common mode input extends below nega-
tive rail
· Pin compatible with LM324/WT274 (14-pin
DIP)
· 14-pin DIP/SOP package
· Signal detectors
· Active filters
· Caller ID systems
· Communication systems
General Description
The HT9274 is a CMOS quad micro-power op-
erational amplifier featuring high input imped-
ance, extremely low power, high gain and high
stability.
It allows common mode input voltage range
which extends below the negative rail, output
swings to both rails with a reasonable sink and
souce capability of the output drive current.
This cost-effective device is suitable for high
gain, low frequency, low power applications, es-
pecially ideal for battery powered systems
where mA range of standby current is essential
for long battery life span. For example, in
multi-standard Caller ID systems, HT9274 is
ideal as a low power line signal monitor/detec-
tor, and in car alarm systems, the HT9274 is ex-
cellent for piezo vibratile detector signal
amplifier application.
Comparison Table
ITEM
Operating Operating
Voltage Current
Output
Source
Current
HT9274 1.6~5.5V
5mA
500mA
WT274 1.35~10V
9mA
16mA
LM324 3~32V
400mA
20mA
Output
Sink
Current
Input Bias
Current
500mA
1pA
2mA
1pA
8mA
45nA
GBW
0.1MHz
0.1MHz
1MHz
Max. load
(To VDD
or VSS)
>10kW
>500kW
>2kW
1
November 23, 1999