MAX44261AXT+T Maxim Integrated Products, MAX44261AXT+T Datasheet - Page 10

• Manufacturer Part Number: MAX44261AXT+T
• Description: Op Amps 1.8V 15MHz Low-Offse set Op Amp with RRIO
• Manufacturer: Maxim Integrated Products

Specifications of MAX44261AXT+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX44260/MAX44261 are high-speed low-power op
amps ideal for signal processing applications due to the
device’s high precision and low-noise CMOS inputs. The
devices self-calibrate on power-up to eliminate effects of
temperature and power-supply variation.
The MAX44260 also features a low-power shutdown
mode that greatly reduces quiescent current while the
device is not operational and recovers in 30µs.
The MAX44261 features a user-selectable self-calibration
input that shuts down the device and allows it to be reca-
librated at any time. The calibration routine takes 10ms.
Figure 1. Comparing the Input Structure of the MAX44260 to Standard Op-Amp Inputs
Figure 2. Crossover Distortion of Typical Amplifiers
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Detailed Description
STANDARD INPUT STRUCTURE
Low-Power, Rail-to-Rail I/O Op Amps
MAX44261
CROSSOVER
DISTORTION
TIME
These op amps feature a low-noise integrated charge
pump that creates an internal voltage rail 1V above
V
pair of PMOS transistors as shown in
a unique architecture eliminates crossover distor-
tion common in traditional CMOS input architecture
(Figure
configuration, such as for Sallen-Key filters.
The charge pump’s operating frequency lies well above
the unity-gain frequency of the amplifier. Thanks to its high-
frequency operation and ultra-quiet circuitry, the charge
pump generates little noise, does not require external
components, and is entirely transparent to the user.
1.8V 15MHz Low-Offset,
DD,
MAX44260/MAX44261
which is used to power the input differential
2), especially when used in a noninverting
MAX44260 INPUTS STRUCTURE
INTERNAL
CHARGE
Crossover Distortion
PUMP
Figure
1. Such