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Analog Devices - (ADA4505-2/-4) Zero Input Crossover Distortion Amplifiers

Numéro de référence ADA4505-4
Description (ADA4505-2/-4) Zero Input Crossover Distortion Amplifiers
Fabricant Analog Devices 
Logo Analog Devices 





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ADA4505-4 fiche technique
FEATURES
PSRR: 100 dB minimum
CMRR: 105 dB typical
Very low supply current: 10 μA per amplifier maximum
1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply
operation
Rail-to-rail input and output
3 mV offset voltage maximum
Very low input bias current: 0.5 pA typical
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APPLICATIONS
Pressure and position sensors
Remote security
Medical monitors
Battery-powered consumer equipment
Hazard detectors
10 μA, Rail-to-Rail I/O, Zero Input
Crossover Distortion Amplifiers
ADA4505-2/ADA4505-4
PIN CONFIGURATIONS
OUT A 1
–IN A 2
+IN A 3
V– 4
ADA4505-2
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 1. 8-Lead MSOP (RM-8)
BALL A1
CORNER
OUT B V+ OUT A
A1 A2 A3
–IN B
B1
–IN A
B3
+IN B V– +IN A
C1 C2 C3
ADA4505-2
TOP VIEW
(BALL SIDE DOWN)
Figure 2. 8-Ball WLCSP (CB-8-2)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3 ADA4505-4 12 +IN D
V+ 4
TOP VIEW
(Not to Scale)
11 V–
+IN B 5
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 3. 14-Lead TSSOP (RU-14)
GENERAL DESCRIPTION
The ADA4505-2/ADA4505-4 are dual and quad micropower
amplifiers featuring rail-to-rail input and output swings while
operating from a single 1.8 V to 5 V power supply or from dual
±0.9 V to ±2.5 V power supplies.
Employing a new circuit technology, these low cost amplifiers
offer zero input crossover distortion (excellent PSRR and CMRR
performance) and very low bias current, while operating with a
supply current of less than 10 μA per amplifier.
This combination of features makes the ADA4505-2/ADA4505-4
amplifiers ideal choices for battery-powered applications because
they minimize errors due to power supply voltage variations
over the lifetime of the battery, and maintain high CMRR even
for a rail-to-rail op amp.
Remote battery-powered sensors, handheld instrumentation
and consumer equipment, hazard detectors (for example, smoke,
fire, and gas), and patient monitors can benefit from the features
of the ADA4505-2/ADA4505-4 amplifiers.
The ADA4505-2/ADA4505-4 are specified for both the industrial
temperature range (−40°C to +85°C) and the extended industrial
temperature range (−40°C to +125°C). The ADA4505-2 dual
amplifier is available in standard 8-lead MSOP and 8-ball WLCSP
packages. The ADA4505-4 quad amplifier is available in a 14-lead
TSSOP package.
The ADA4505-2/ADA4505-4 are members of a growing series
of zero crossover op amps offered by Analog Devices, Inc.,
including the AD8506/AD8508, which also operate from a
single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V
power supplies.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.

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