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PDF AD8661 Data sheet ( Hoja de datos )
| Número de pieza | AD8661 | |
| Descripción | Rail-to-Rail Operational Amplifiers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
FEATURES
Low offset voltage: 100 µV maximum at VS = 5 V
Low input bias current: 1 pA maximum
Single-supply operation: 5 V to 16 V
Low noise: 10 nV/√Hz
Wide bandwidth: 4 MHz
Unity-gain stable
Small package options
3 mm × 3 mm 8-lead LFCSP
8-lead MSOP and narrow SOIC
14-lead TSSOP and narrow SOIC
APPLICATIONS
Sensors
Medical equipment
Consumer audio
Photodiode amplification
ADC drivers
Low Noise, Precision 16 V CMOS,
Rail-to-Rail Operational Amplifiers
AD8661/AD8662/AD8664
PIN CONFIGURATIONS
NIC 1
8 NIC
–IN 2 AD8661 7 V+
TOP VIEW
+IN 3 (Not to Scale) 6 OUT
V– 4
5 NIC
NIC = NO INTERNALCONNECTION
Figure 1. AD8661, 8-Lead SOIC
(R-8)
NIC 1
–IN 2
+IN 3
V– 4
AD8661
TOP VIEW
(Not to Scale)
8 NIC
7 V+
6 OUT
5 NIC
NOTES
1. NIC = NO INTERNAL CONNECTION.
2. CONNECT THE EXPOSED PAD TO V–.
Figure 2. AD8661, 8-Lead LFCSP
(CP-8-13)
OUT A 1
8 V+
–IN A 2 AD8662 7 OUT B
TOP VIEW
+IN A 3 (Not to Scale) 6 –IN B
V– 4
5 +IN B
Figure 3. AD8662, 8-Lead SOIC
(R-8)
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8662
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 4. AD8662, 8-Lead MSOP
(RM-8)
OUT A 1
14 OUT D
–IN A 2 AD8664 13 –IN D
+IN A 3 TOP VIEW 12 +IN D
V+ 4 (Not to Scale) 11 V–
+IN B 5
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
OUT A 1
14 OUT D
–IN A 2 AD8664 13 –IN D
+IN A 3 TOP VIEW 12 +IN D
V+ 4 (Not to Scale) 11 V–
+IN B 5
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
GENERAL DESCRIPTION
The AD8661/AD8662/AD86641 are rail-to-rail output, single-
supply amplifiers that use the Analog Devices, Inc., patented
DigiTrim® trimming technique to achieve low offset voltage.
The AD8661/AD8662/AD8664 series features extended
operating ranges, with supply voltages up to 16 V. It also
features low input bias current, wide signal bandwidth,
and low input voltage and current noise.
The combination of low offset, very low input bias current,
and a wide supply range makes these amplifiers useful in a wide
variety of applications usually associated with higher priced JFET
amplifiers. Systems using high impedance sensors, such as
photodiodes, benefit from the combination of low input bias
current, low noise, low offset, and wide bandwidth. The wide
operating voltage range meets the demands of high performance
analog-to-digital converters (ADCs) and digital-to-analog
1 Protected by U.S. Patents 6,194,962 and 6,696,894.
Rev. E
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Figure 5. AD8664, 14-Lead SOIC
(R-14)
Figure 6. AD8664, 14-Lead TSSOP
(RU-14)
converters (DACs). Audio applications and medical monitoring
equipment can take advantage of the high input impedance, low
voltage, low current noise, and wide bandwidth.
The single AD8661 is available in a narrow 8-lead SOIC package
and a very thin, dual lead, 8-lead LFCSP. The AD8661 SOIC
package is specified over the extended industrial temperature
range of −40°C to +125°C. The AD8661 LFCSP is specified over
the industrial temperature range of −40°C to +85°C. The AD8662
is available in a narrow 8-lead SOIC package and an 8-lead MSOP,
both specified over the extended industrial temperature range of
−40°C to +125°C. The AD8664 is available in a narrow 14-lead
SOIC package and a 14-lead TSSOP, both with an extended
industrial temperature range of −40°C to +125°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2005–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
AD8661 ELECTRICAL CHARACTERISTICS—LFCSP ONLY
VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Current Noise Density
Symbol
VOS
IB
IOS
CMRR
AVO
TCVOS
VOH
VOL
ISC
ZOUT
ISY
SR
GBP
ΦO
en p-p
en
in
Test Conditions/Comments
VCM = VS/2
−40°C < TA < +85°C
−40°C < TA < +85°C
−40°C < TA < +85°C
VCM = −0.1 V to +3.0 V
−40°C < TA < +85°C
RL = 2 kΩ, VO = 0.5 V to 4.5 V
−40°C < TA < +85°C
IL = 1 mA
−40°C < TA < +85°C
IL = 1 mA
−40°C < TA < +85°C
f = 1 MHz, AV = 1
VO = VS/2
−40°C < TA < +85°C
RL = 2 kΩ
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 1 kHz
AD8661/AD8662/AD8664
Min Typ Max Unit
50
0.3
0.2
−0.1
85 100
80 100
100 240
4
300
2000
1
50
0.5
20
+3.0
17
µV
µV
pA
pA
pA
pA
V
dB
dB
V/mV
µV/°C
4.85 4.93
4.80
50 100
120
±19
65
V
V
mV
mV
mA
Ω
1.15 1.40
1.8
mA
mA
3.5 V/µs
4 MHz
65 Degrees
2.5 µV p-p
12 nV/√Hz
10 nV/√Hz
0.1 pA/√Hz
Rev. E | Page 5 of 16
5 Page 
Data Sheet
0V
VIN
–100mV
8V
VO
VS = 16V
G = –100
0V
TIME (5µs/DIV)
Figure 25. Negative Overload Recovery
1k
VS = ±2.5V AND ±8V
100
10
1
1 10 100 1k
FREQUENCY (Hz)
Figure 26. Voltage Noise Density vs. Frequency
10k
1800
1600
VS = 5V
TA = 25°C
VCM = –0.1V TO +3V
1400
1200
1000
800
600
400
200
0
–150
–100
–50
0
50 100
VOS (µV)
Figure 27. Input Offset Voltage Distribution
150
AD8661/AD8662/AD8664
16
VS = 5V
14
TA = –40°C TO +125°C
VCM = 2.5V
12
10
8
6
4
2
0
0 1 2 3 4 5 6 7 8 9 10
TCVOS (µV/°C)
Figure 28. Offset Voltage Drift Distribution
200
VS = 5V
150 TA = 25°C
100
50
0
–50
–100
–150
–200
–0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
COMMON-MODE VOLTAGE (V)
Figure 29. Input Offset Voltage vs. Common-Mode Voltage
10k
VDD = 5V
1k
100 VDD – VOH
SOURCING
VOL
SINKING
10
1
0.1
0.001
0.01
0.1
1
10 20
LOAD CURRENT (mA)
Figure 30. Output Swing Saturation Voltage vs. Load Current
Rev. E | Page 11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AD8661.PDF ] | |
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