CBM8531-CBM8532-CBM8534
OPERATION INSTRUCTION
FEATURES
APPLICATIONS
Single-supply operation: 2.7 V to 6 V
Multimedia audio
High output current: ±250 mA
Low supply current: 750 μA/amplifier
Wide bandwidth: 3 MHz
Slew rate: 5 V/μs
LCD drivers
ASIC input or output amplifiers
Headphone drivers
No phase reversal
Low input currents
Unity gain stable
Rail-to-rail input and output
GENERAL DESCRIPTION
The CBM8531, CBM8532, and CBM8534 are single, dual, and quad rail-to-rail input/output
single-supply amplifiers featuring 250 mA output drive current. This high output current makes
these amplifiers excellent for driving either resistive or capacitive loads. AC performance is very
good with 3 MHz bandwidth,5 V/μs slew rate, and low distortion. All are guaranteed to operate
from a 3 V single supply as well as a 5 V supply.
The very low input bias currents enable the CBM853X to be used for integrators, diode
amplification, and other applications requiring low input bias current. Supply current is only 750
μA per amplifier at 5 V, allowing low current applications to control high current loads.
Applications include audio amplification for computers, sound ports, sound cards, and
set-top boxes. The CBM853X family is very stable, and it is capable of driving heavy capacitive
loads such as those found in LCDs.
The ability to swing rail-to-rail at the inputs and outputs enables designers to buffer CMOS
DACs, ASICs, or other wide output swing devices in single-supply systems.
The CBM8531/CBM8532/CBM8534 are specified over the extended industrial temperature
range (−40°C to +85°C). The CBM8531 is available in 8-lead SOIC, 5-lead SC70, and 5-lead
SOT-23 packages. The CBM8532 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead TSSOP
surface-mount packages. The CBM8534 is available in narrow 14-lead SOIC and 14-lead TSSOP
surface-mount packages.
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