MAX44261AXT(2011) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX44261AXT Datasheet PDF : 14 Pages
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MAX44260/MAX44261
1.8V 15MHz Low-Offset,
Low-Power, Rail-to-Rail I/O Op Amps
Input Bias Current
The ICs feature a high-impedance CMOS input stage
and a specialized ESD structure that allows low-input
bias current operation at low-input, common-mode volt-
ages. Low-input bias current is useful when interfacing
with high-ohmic sensors. It is also beneficial for design-
ing transimpedance amplifiers for photodiode sensors.
This makes these devices ideal for ground-referenced
medical and industrial sensor applications.
Active Filters
The MAX44260/MAX44261 are ideal for a wide variety
of active filter circuits that make use of their wide band-
width, rail-to-rail input/output stages and high-impedance
CMOS inputs. The Typical Application Circuit shows an
example Sallen-Key active filter circuit with a corner
frequency of 10kHz. At low frequencies, the amplifier
behaves like a simple low-distortion noninverting buf-
fer, while its high bandwidth gives excellent stopband
attenuation above its corner frequency. See the Typical
Application Circuit.
Driver for Interfacing with
the MAX11645 ADC
The ICs’ tiny size and low noise makes them a good fit for
driving 12- to 16-bit resolution ADCs in space-constrained
applications. The Typical Application Circuit shows the
MAX44260 amplifier output connected to a lowpass filter
driving the MAX11645 ADC. The MAX11645 is part of a
family of 3V and 5V, 12-bit and 10-bit, 2-channel ADCs.
The MAX11645 offers sample rates up to 94ksps and
measures two single-ended inputs or one differential
input. These ADCs dissipate 670FA at the maximum
sampling rate, but just 6FA at 1ksps and 0.5FA in shut-
down. Offered in the ultra-tiny, 1.9mm x 2.2mm WLP and
FMAX-8 packages, the MAX11645 ADCs are an ideal fit
to pair with the MAX44260/MAX44261 amplifiers in por-
table applications.
Where higher resolution is required, refer to the MAX1069
(14-bit) and MAX1169 (16-bit) ADC families.
PROCESS: BiCMOS
Chip Information
Ordering Information
PART
TEMP RANGE
PIN-
TOP
PACKAGE MARK
MAX44260AXT+ -40NC to 125NC 6 SC70
+AEB
MAX44261AXT+ -40NC to 125NC 6 SC70
+AEC
+Denotes a lead(Pb)-free/RoHS-compliant package.
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