參數資料
| 型號： | AD549JH |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/20頁 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 1MHZ LP 20MA TO99-8 |
| 標準包裝： | 1 |
| 系列： | Topgate™ |
| 放大器類型： | 通用 |
| 電路數： | 1 |
| 轉換速率： | 3 V/µs |
| 增益帶寬積： | 1MHz |
| 電流 - 輸入偏壓： | 0.15pA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 600µA |
| 電流 - 輸出 / 通道： | 20mA |
| 電壓 - 電源，單路/雙路(±)： | ±5 V ~ 18 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | TO-99-8 金屬罐 |
| 供應商設備封裝： | TO-99-8 |
| 包裝： | 散裝 |
Ultralow Input Bias Current
Operational Amplifier
AD549
Rev. H
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
www.analog.com
Fax: 781.461.3113
2002–2008 Analog Devices, Inc. All rights reserved.
FEATURES
Ultralow input bias current
60 fA maximum (AD549L)
250 fA maximum (AD549J)
Input bias current guaranteed over the common-mode
voltage range
Low offset voltage
0.25 mV maximum (AD549K)
1.00 mV maximum (AD549J)
Low offset drift
5 μV/°C maximum (AD549K)
20 μV/°C maximum (AD549J)
Low power
700 μA maximum supply current
Low input voltage noise
4 μV p-p over 0.1 Hz to 10 Hz
MIL-STD-883B parts available
APPLICATIONS
Electrometer amplifier
Photodiode preamp
pH electrode buffer
Vacuum ion gauge measurement
CONNECTION DIAGRAM
00
51
1-
0
01
AD549
OFFSET NULL
OUTPUT
V–
OFFSET
NULL
NONINVERTING
INPUT
V+
GUARD PIN,
CONNECTED
TO CASE
INVERTING
INPUT
VOS TRIM
–15V
10k
6
1
5
4
7
3
2
8
1
5
4
Figure 1.
GENERAL DESCRIPTION
The AD549 is a monolithic electrometer operational amplifier
with very low input bias current. Input offset voltage and input
offset voltage drift are laser trimmed for precision performance.
The ultralow input current of the part is achieved with Topgate
JFET technology, a process development exclusive to Analog
Devices, Inc. This technology allows fabrication of extremely
low input current JFETs compatible with a standard junction
isolated bipolar process. The 1015 Ω common-mode impedance,
which results from the bootstrapped input stage, ensures that
the input current is essentially independent of the common-
mode voltage.
The AD549 is suited for applications requiring very low input
current and low input offset voltage. It excels as a preamp for a
wide variety of current output transducers, such as photodiodes,
photomultiplier tubes, or oxygen sensors. The AD549 can also
be used as a precision integrator or low droop sample-and-hold.
The AD549 is pin compatible with standard FET and electrometer
op amps, allowing designers to upgrade the performance of
present systems at little additional cost.
The AD549 is available in a TO-99 hermetic package. The case
is connected to Pin 8, thus, the metal case can be independently
connected to a point at the same potential as the input terminals,
minimizing stray leakage to the case. The AD549 is available in
four performance grades. The J, K, and L versions are rated over
the commercial temperature range of 0°C to +70°C. The S grade
is specified over the military temperature range of 55°C to +125°C
and is available processed to MIL-STD-883B, Rev. C. Extended
reliability plus screening is also available. Plus screening includes
168 hour burn-in, as well as other environmental and physical
tests derived from MIL-STD-883B, Rev. C.
PRODUCT HIGHLIGHTS
1.
The AD549 input currents are specified, 100% tested, and
guaranteed after the device is warmed up. They are guaran-
teed over the entire common-mode input voltage range.
2.
The AD549 input offset voltage and drift are laser trimmed
to 0.25 mV and 5 μV/°C (AD549K), and to 1 mV and
20 μV/°C (AD549J).
3.
A maximum quiescent supply current of 700 μA minimizes
heating effects on input current and offset voltage.
4.
AC specifications include 1 MHz unity-gain bandwidth
and 3 V/μs slew rate. Settling time for a 10 V input step is
5 μs to 0.01%.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD549JH | 制造商:Analog Devices 功能描述:SEMICONDUCTORS LINEAR |
| AD549JH/+ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD549JHZ | 功能描述:IC OPAMP GP 1MHZ LP 20MA TO99-8 RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Topgate™ 標準包裝:2,500 系列:- 放大器類型:通用 電路數:4 輸出類型:- 轉換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD549JHZ | 制造商:Analog Devices 功能描述:IC, OP-AMP, 1MHZ, 3V/ us, TO-99-8 |
| AD549K | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultralow Input Bias Current Operational Amplifier |
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