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PDF AD8667 Data sheet ( Hoja de datos )
| Número de pieza | AD8667 | |
| Descripción | (AD8663 - AD8669) Rail-to-Rail Operational Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Low Noise, Precision, 16 V, CMOS,
Rail-to-Rail Operational Amplifiers
AD8663/AD8667/AD8669
FEATURES
Low offset voltage: 175 μV maximum @ VSY = 5 V
Low supply current: 275 μA maximum per amplifier
Single-supply operation: 5 V to 16 V
Low noise: 23 nV/√Hz
Low input bias current: 300 fA
Unity-gain stable
Small packages available
3 mm × 3 mm, 8-lead LFCSP
8-lead MSOP
Other packages
8-lead SOIC
14-lead SOIC
14-lead TSSOP
APPLICATIONS
Sensor front ends
Transimpedance amplifiers
Electrometer applications
Photodiode amplification
Low power ADC drivers
Medical diagnostic instruments
pH and ORP meters and probes
DAC or REF buffers
GENERAL DESCRIPTION
The AD8663/AD8667/AD8669 are rail-to-rail output amplifiers
that use the Analog Devices, Inc., patented DigiTrim® trimming
technique to achieve low offset voltage. The AD8663/AD8667/
AD8669 feature an extended operating range with supply
voltages up to 16 V. They also feature low input bias current,
low input offset voltage, and low 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 ampli-
fiers. 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 ability to operate the device for single (5 V to 16 V) or dual
supplies (±2.5 V to ±8 V) supports many applications. The rail-
to-rail outputs provide increased dynamic range to drive low
PIN CONFIGURATIONS
AD8663
TOP VIEW
(Not to Scale)
NC 1
8 NC
–IN 2 AD8663 7 V+
+IN
3
TOP VIEW
(Not to Scale)
6
OUT
V– 4
5 NC
NC 1
–IN 2
+IN 3
V– 4
8 NC
7 V+
6 OUT
5 NC
NC = NO CONNECT
Figure 1. 8-Lead SOIC (R-8)
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
2. CONNECT THE EXPOSED PAD TO
V– OR LEAVE IT UNCONNECTED.
Figure 2. 8-Lead LFCSP (CP-8-13)
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8667
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 3. 8-Lead MSOP (RM-8),
8-Lead SOIC (R-8)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3 AD864698 12 +IN D
V+ 4 TOP VIEW 11 V–
+IN B 5 (Not to Scale) 10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 4. 14-Lead SOIC (R-14),
14-Lead TSSOP (RU-14)
frequency data converters. The low bias current drift is well-
suited for precision I-to-V converters. The combination of
precision offset, offset drift, and low noise also make the op
amps ideal for gain, dc offset adjust, and active filter in both
instrumentation and medical applications. These low power
op amps can be used in IR thermometers, pH and ORP instru-
ments, pressure transducer front ends, and other sensor signal
conditioning circuits that are used in remote or wireless
applications.
The AD8663/AD8667/AD8669 are specified over the extended
industrial temperature range of −40°C to +125°C. The single
AD8663 is available in a narrow 8-lead SOIC package and a very
thin, 8-lead LFCSP. The dual AD8667 is available in a narrow
8-lead SOIC package and an 8-lead MSOP. The quad AD8669
is available in a 14-lead SOIC and 14-lead small TSSOP.
Rev. D
Document Feedback
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 ©2007–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature, Soldering (60 sec)
Rating
18 V
−0.1 V to VSY
18 V
Indefinite
−60°C to +150°C
−40°C to +125°C
−65°C to +150°C
300°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
AD8663/AD8667/AD8669
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 4. Thermal Resistance
Package Type
θJA θJC Unit
8-Lead SOIC (R-8)
121 43
°C/W
8-Lead LFCSP (CP-8-13)
751 181 °C/W
8-Lead MSOP (RM-8)
145 45
°C/W
14-Lead SOIC (R-14)
90 45 °C/W
14-Lead TSSOP (RU-14)
180 35
°C/W
1 Exposed pad soldered to application board.
ESD CAUTION
Rev. D | Page 5 of 15
5 Page 
Data Sheet
600
550 +125°C
+85°C
500
450 +25°C
400 –40°C
350
300
250
200
150
100
50
0
0 2 4 6 8 10 12 14 16
VSY (V)
Figure 35. AD8667, Supply Current vs. Supply Voltage
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
INPUT VOLTAGE
VSY = ±2.5V
AV = –100
TA = 25°C
OUTPUT VOLTAGE
TIME (20µs/DIV)
Figure 36. Positive Overload Recovery
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
–0.30
–0.35
INPUT VOLTAGE
VSY = ±2.5V
AV = –100
TA = 25°C
OUTPUT VOLTAGE
TIME (20µs/DIV)
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
Figure 37. Negative Overload Recovery
AD8663/AD8667/AD8669
1000
VSY = ±2.5V AND ±8V
TA = 25°C
100
10
1
1
10
100
1000
10000
FREQUENCY (Hz)
Figure 38. Voltage Noise Density
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
INPUT VOLTAGE
VSY = ±8V
AV = –100
TA = 25°C
27
22
17
12
7
2
OUTPUT VOLTAGE
–3
–8
TIME (20µs/DIV)
Figure 39. Positive Overload Recovery
–13
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
–0.30
–0.35
35
INPUT VOLTAGE
VSY = ±8V
AV = –100
TA = 25°C
30
25
20
15
10
OUTPUT VOLTAGE
5
0
TIME (20µs/DIV)
–5
Figure 40. Negative Overload Recovery
Rev. D | Page 11 of 15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AD8667.PDF ] | |
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