R
UMW
AD8531/AD8532/AD8534
Low Cost, 250 mA Output, Single-Supply Amplifiers
GENERAL DESCRIPTION
FEATURES
Single-supply operation: 2.7 V to 6 V
High output current: ±250 mA
Low supply current: 750 μA/amplifier
Wide bandwidth: 3 MHz
Slew rate: 5 V/μs
No phase reversal
Low input currents
Unity gain stable
Rail-to-rail input and output
The AD8531, AD8532, and AD8534 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 AD853x 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
Multimedia audio
LCD drivers
ASIC input or output amplifiers
Headphone drivers
Applications include audio amplification for computers,
sound ports, sound cards, and set-top boxes. The
AD853x 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.
PIN CONFIGURATIONS
1
2
3
4
8
7
6
5
OUT A
–IN A
+IN A
V–
V+
OUT A
V–
1
2
3
5
V+
OUT B
–IN B
+IN B
+IN A
–IN A
4
AD8532
AD8531
Figure 3. 8-Lead SOP 8-Lead TSSOP
(R, RU, and RM Suffixes)
Figure 1. 5-Lead SC70 and 5-Lead SOT-23
(KS and RT Suffixes)
1
2
OUT D
–IN D
14
13
UT A
–IN A
+IN A
V+
NC
–IN A
+IN A
V–
1
2
3
4
8
7
6
5
NC
3
4
5
6
12 +IN D
11 V–
V+
OUT A
NC
10 +IN C
+IN B
–IN B
UT B
9
–IN C
AD8531
NC = NO CONNECT
7
8
OUT C
AD8534
Figure 2. 8-Lead SOP
(R Suffix)
Figure 4. 14-Lead SOP and 14-Lead TSSOP
(R and RU Suffixes)
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UTD Semiconductor Co.,Limited
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