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| 型號(hào)： | AD795JRZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 0K |
| 描述： | IC OPAMP JFET 1.6MHZ LN 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 放大器類型： | J-FET |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 1 V/µs |
| -3db帶寬： | 1.6MHz |
| 電流 - 輸入偏壓： | 1pA |
| 電壓 - 輸入偏移： | 100µV |
| 電流 - 電源： | 1.3mA |
| 電流 - 輸出 / 通道： | 10mA |
| 電壓 - 電源，單路/雙路(±)： | 8 V ~ 36 V，±4 V ~ 18 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
Low Power, Low Noise
Precision FET Op Amp
AD795
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
Fax: 781.461.3113
2002–2009 Analog Devices, Inc. All rights reserved.
FEATURES
Low power replacement for Burr-Brown
OPA111, OPA121 op amps
Low noise
3.3 μV p-p maximum, 0.1 Hz to 10 Hz
11 nV/√Hz maximum at 10 kHz
0.6 fA/√Hz at 1 kHz
High dc accuracy
500 μV maximum offset voltage
10 μV/°C maximum drift
2 pA maximum input bias current
Low power: 1.5 mA maximum supply current
APPLICATIONS
Low noise photodiode preamps
CT scanners
Precision l-to-V converters
CONNECTION DIAGRAM
NC 1
–IN 2
+IN 3
–VS 4
NC
8
+VS
7
OUTPUT
6
NC
5
NC = NO CONNECT
AD795
00
84
5
-00
1
Figure 1. 8-Lead SOIC (R) Package
GENERAL DESCRIPTION
The AD795 is a low noise, precision, FET input operational
amplifier. It offers both the low voltage noise and low offset drift
of a bipolar input op amp and the very low bias current of a FET-
input device. The 1014 Ω common-mode impedance insures
that input bias current is essentially independent of common-
mode voltage and supply voltage variations.
The AD795 has both excellent dc performance and a guaranteed
and tested maximum input voltage noise. It features 2 pA
maximum input bias current and 500 μV maximum offset
voltage, along with low supply current of 1.5 mA maximum.
1k
100
10
1
10
100
1k
10k
FREQUENCY (Hz)
V
O
L
T
A
G
E
NO
IS
E
S
P
E
CT
RAL
DE
N
S
IT
Y
(n
V
/
Hz
)
00
84
5-
00
2
Figure 2. Voltage Noise Spectral Density
Furthermore, the AD795 features a guaranteed low input noise
of 3.3 μV p-p (0.1 Hz to 10 Hz) and a 11 nV/√Hz maximum
noise level at 10 kHz. The AD795 has a fully specified and
tested input offset voltage drift of only 10 μV/°C maximum.
The AD795 is useful for many high input impedance, low noise
applications. The AD795 is rated over the commercial tempera-
ture range of 0°C to +70°C.
The AD795 is available in an 8-lead SOIC package.
50
40
30
20
10
0
–5
–4
–3
–2
–1
0
1
2
3
4
5
INPUT OFFSET VOLTAGE DRIFT (V/°C)
P
E
RCE
NT
A
G
E
O
F
UNI
T
S
00
84
5-
0
03
SAMPLE SIZE = 570
Figure 3. Typical Distribution of Average Input Offset Voltage Drift
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