OP490GS
The OP490 is a high performance micropower quad op amp
that operates from a single supply of 1.6 V to 36 V or from dual
supplies of ?0.8 V to ?18 V. The input voltage range includes
the negative rail allowing the OP490 to accommodate input
signals down to ground in single-supply operation. The output
swing of the OP490 also includes ground when operating from
a single supply, enabling zero-in, zero-out operation.
The quad OP490 draws less than 20 ?A of quiescent supply
current per amplifier, but each amplifier is able to deliver over
5 mA of output current to a load. Input offset voltage is under
0.5 mV. Gain exceeds over 400,000 and CMR is better than
90 dB. A PSRR of under 5.6 ?V/V minimizes offset voltage
changes experienced in battery-powered systems.
OP491GP
The OP191, OP291, and OP491 are single, dual, and quad
micropower, single-supply, 3 MHz bandwidth amplifiers
featuring rail-to-rail inputs and outputs. All are guaranteed to
operate from a 3 V single supply as well as ?5 V dual supplies.
Fabricated on Analog Devices CBCMOS process, the OPx91
family has a unique input stage that allows the input voltage to
safely extend 10 V beyond either supply without any phase
inversion or latch-up. The output voltage swings to within
millivolts of the supplies and continues to sink or source
current all the way to the supplies.
OP495GS
Rail-to-rail output swing combined with dc accuracy are the
key features of the OP495 quad and OP295 dual CBCMOS
operational amplifiers. By using a bipolar front end, lower noise
and higher accuracy than those of CMOS designs have been
achieved. Both input and output ranges include the negative
supply, providing the user with zero-in/zero-out capability. For
users of 3.3 V systems such as lithium batteries, the OP295/OP495
are specified for 3 V operation.
Maximum offset voltage is specified at 300 ?V for 5 V operation,
and the open-loop gain is a minimum of 1000 V/mV. This yields
performance that can be used to implement high accuracy systems,
even in single-supply designs.
OP97F
The OP97 is a low power alternative to the industry-standard
OP07 precision amplifier. The OP97 maintains the standards of
performance set by the OP07 while utilizing only 600 ?A supply
current, less than 1/6 that of an OP07. Offset voltage is an ultralow
25 ?V, and drift over temperature is below 0.6 ?V/?C. External
offset trimming is not required in the majority of circuits.
Improvements have been made over OP07 specifications in
several areas. Notable is bias current, which remains below
250 pA over the full military temperature range. The OP97 is
ideal for use in precision long-term integrators or sample-andhold circuits that must operate at elevated temperatures.
