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AD8505_16

更新时间： 2024-11-03 01:06:47
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亚德诺 - ADI /
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20页 655K
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20 μA Maximum, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers

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AD8505_16 数据手册

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20 μA Maximum, Rail-to-Rail I/O,  
Zero Input Crossover Distortion Amplifiers  
AD8505/AD8506/AD8508  
FEATURES  
PSRR: 100 dB minimum  
CMRR: 105 dB typical  
PIN CONFIGURATIONS  
BALL A1  
INDICATOR  
OUT  
A1  
V+  
A2  
Very low supply current: 20 μA per amplifier maximum  
1.8 V to 5 V single supply or 0.9 V to 2.5 V dual supply  
Rail-to-rail input/output  
V–  
B1  
NC  
B2  
Low noise: 45 nV/√Hz at 1 kHz  
2.5 mV offset voltage maximum  
Very low input bias current: 1 pA typical  
+IN  
C1  
–IN  
C2  
OUT  
V–  
1
2
3
5
4
V+  
AD8505  
APPLICATIONS  
Pressure and position sensors  
Remote security  
AD8505  
TOP VIEW  
(BALL SIDE DOWN)  
Not to Scale  
TOP VIEW  
(Not to Scale)  
+IN  
–IN  
NC = NO CONNECT  
Bio sensors  
IR thermometers  
Battery-powered consumer equipment  
Hazard detectors  
Figure 1. 5-Lead SOT-23 (RJ-5)  
Figure 2. 6-Ball WLCSP (CB-6-7)  
BALL A1  
CORNER  
OUT B  
A1  
V+  
A2  
OUT A  
A3  
GENERAL DESCRIPTION  
–IN B  
B1  
–IN A  
B3  
The AD8505/AD8506/AD8508 are single, dual, and quad micro-  
power amplifiers featuring rail-to-rail input/output swings while  
operating from a single 1.8 V to 5 V power supply or from dual  
±0.ꢀ V to ±±.5 V power supplies. Using a new circuit technology,  
these amplifiers offer zero input crossover distortion (excellent  
PSRR and CMRR performance) and low bias current while  
operating with a supply current of less than ±0 μA per amplifier.  
This amplifier family offers the lowest noise in its power class.  
+IN B  
C1  
V–  
C2  
+IN A  
C3  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
AD8506  
OUT B  
–IN B  
+IN B  
AD8506  
TOP VIEW  
TOP VIEW  
(Not to Scale)  
(BALL SIDE DOWN)  
Not to Scale  
Figure 3. 8-Lead MSOP (RM-8)  
Figure 4. 8-Ball WLCSP (CB-8-2)  
This combination of features makes the AD8505/AD8506/AD8508  
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 input op amp. Remote battery-powered sensors, handheld  
instrumentation, consumer equipment, hazard detection (for  
example, smoke, fire, and gas), and patient monitors can benefit  
from the features of the AD8505/AD8506/AD8508 amplifiers.  
BALL A1  
CORNER  
OUTD  
A1  
OUTA  
A2  
–INA  
A3  
–IND  
B1  
V–  
B2  
+INA  
B3  
+IND  
C1  
+INB  
C3  
OUT A  
–IN A  
+IN A  
V+  
1
2
3
4
5
6
7
14 OUT D  
13 –IN D  
12 +IN D  
11 V–  
+INC  
D1  
V+  
D2  
–INB  
D3  
AD8508  
–INC  
E1  
OUTC  
E2  
OUTB  
E3  
TOP VIEW  
The AD8505/AD8506/AD8508 are specified for both the industrial  
temperature range of −40°C to +85°C and the extended industrial  
temperature range of −40°C to +1±5°C. The AD8505 single ampli-  
fier is available in a tiny 5-lead SOT-±3 and a 6-ball WLCSP  
packages. The AD8506 dual amplifier is available in 8-lead MSOP  
and 8-ball WLCSP packages. The AD8508 quad amplifier is  
available in 14-lead TSSOP and 14-ball WLCSP packages. The  
AD8505/AD8506/AD8508 are members of a growing series of  
zero crossover distortion op amps offered by Analog Devices,  
Inc., including the ADA4505-1/ADA4505-±/ADA4505-4, that  
operate from a single 1.8 V to 5 V supply or from dual ±0.ꢀ V to  
±±.5 V power supplies.  
(Not to Scale)  
+IN B  
–IN B  
OUT B  
10 +IN C  
9
8
–IN C  
AD8508  
TOP VIEW  
OUT C  
(BALL SIDE DOWN)  
Not to Scale  
Figure 5. 14-Lead TSSOP (RU-14)  
Figure 6. 14-Ball WLCSP (CB-14-1)  
Rev. E  
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.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
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 ©2007–2010 Analog Devices, Inc. All rights reserved.  
 
 
 
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