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PDF AD8625 Data sheet ( Hoja de datos )
| Número de pieza | AD8625 | |
| Descripción | Precision Low Power Single-Supply JFET Amplifiers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
FEATURES
SC70 package
Very low IB: 1 pA max
Single-supply operation: 5 V to 26 V
Dual-supply operation: ±2.5 V to ±13 V
Rail-to-rail output
Low supply current: 630 μA/amp typ
Low offset voltage: 500 μV max
Unity gain stable
No phase reversal
APPLICATIONS
Photodiode amplifiers
ATEs
Line-powered/battery-powered instrumentation
Industrial controls
Automotive sensors
Precision filters
Audio
GENERAL DESCRIPTION
The AD862x is a precision JFET input amplifier. It features
true single-supply operation, low power consumption, and
rail-to-rail output. The outputs remain stable with capacitive
loads of over 500 pF; the supply current is less than 630 μA/amp.
Applications for the AD862x include photodiode transimpedance
amplification, ATE reference level drivers, battery management,
both line powered and portable instrumentation, and remote
sensor signal conditioning, which includes automotive sensors.
The AD862x’s ability to swing nearly rail-to-rail at the input
and rail-to-rail at the output enables it to be used to buffer
CMOS DACs, ASICs, and other wide output swing devices in
single-supply systems.
Precision Low Power
Single-Supply JFET Amplifiers
AD8625/AD8626/AD8627
PIN CONFIGURATIONS
8-Lead SOIC
(R-8 Suffix)
5-Lead SC70
(KS Suffix)
NC 1
–IN 2
AD8627
+IN 3
8 NC
7 V+
6 OUT
OUT A 1
V– 2 AD8627
+IN 3
5 V+
4 –IN
V– 4
5 NC
NC = NO CONNECT
8-Lead SOIC
(R-8 Suffix)
8-Lead MSOP
(RM-Suffix)
OUT A 1
–IN A 2
AD8626
+IN A 3
V– 4
8 V+
7 OUT B
6 –IN B
OUT A
–IN A
+IN A
V–
5 +IN B
18
AD8626
45
V+
OUT B
–IN B
+IN B
14-Lead SOIC
(R-Suffix)
14-Lead TSSOP
(RU-Suffix)
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
AD8625
14 OUT D
13 –IN D
12 +IN D
11 V–
10 +IN C
9 –IN C
8 OUT C
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
Figure 1.
1 14
AD8625
78
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
The 5 MHz bandwidth and low offset are ideal for precision filters.
The AD862x is fully specified over the industrial temperature
range. (−40°C to +85°C). The AD8627 is available in both
5-lead SC70 and 8-lead SOIC surface-mount packages (SC70
packaged parts are available in tape and reel only). The AD8626
is available in MSOP and SOIC packages, while the AD8625 is
available in TSSOP and SOIC packages.
Rev. F
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 ©2003–2013 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
Storage Temperature Range, R Package
Operating Temperature Range
Junction Temperature Range, R Package
Lead Temperature Range (Soldering, 60 sec)
Ratings
27 V
VS– to VS+
± Supply Voltage
Indefinite
−65°C to +125°C
−40°C to +85°C
−65°C to +150°C
300°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
AD8625/AD8626/AD8627
θJA is specified for worst-case conditions when devices are
soldered in circuit boards for surface-mount packages.
Table 4.
Package Type
5-Lead SC70 (KS)
8-Lead MSOP (RM)
8-Lead SOIC (R)
14-Lead SOIC (R)
14-Lead TSSOP (RU)
θJA θJC Unit
376 126 °C/W
210 45 °C/W
158 43 °C/W
120 36 °C/W
180 35 °C/W
ESD CAUTION
Rev. F | Page 5 of 20
5 Page 
Data Sheet
70
VS = ±2.5V
RL = 10kΩ
60 VIN = 100mV p-p
AV = +1
50
40
30
OS+
20
OS–
10
0
10 100 1k
CAPACITANCE (pF)
Figure 32. Small-Signal Overshoot vs. Load Capacitance
VSY = ±13V
AVO = 100,000V/V
0
TIME (1s/DIV)
Figure 33. 0.1 Hz to 10 Hz Noise
VSY = ±2.5V
AVO = 100,000V/V
0
TIME (1s/DIV)
Figure 34. 0.1 Hz to 10 Hz Noise
AD8625/AD8626/AD8627
56
VSY = ±13V
49
42
35
19.7nV/ Hz
28
21
14
7
0
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (kHz)
Figure 35. Voltage Noise Density
56
VSY = 5V
49
42
35
16.7nV/ Hz
28
21
14
7
0
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (kHz)
Figure 36. Voltage Noise Density
–40
–50
–60
–70
VSY = ±5V, VIN = 9V p-p
–80 VSY = ±13V, VIN = 18V p-p
–90
–100
VSY = ±2.5V, VIN = 4.5V p-p
–110
10
100 1k
FREQUENCY (Hz)
10k
100k
Figure 37. Total Harmonic Distortion + Noise vs. Frequency
Rev. F | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD8625.PDF ] | |
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