- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373889 > AD645KN (ANALOG DEVICES INC) Low Noise, Low Drift FET Op Amp PDF資料下載
參數(shù)資料
| 型號： | AD645KN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Low Noise, Low Drift FET Op Amp |
| 中文描述： | OP-AMP, 400 uV OFFSET-MAX, 2 MHz BAND WIDTH, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 439K |
| 代理商： | AD645KN |
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Low Noise, Low Drift
FET Op Amp
AD645
FEATURES
Improved Replacement for Burr-Brown
OPA-111 and OPA-121 Op Amp
LOW NOISE
2
m
V p-p max, 0.1 Hz to 10 Hz
10 nV/
√
Hz
max at 10 kHz
11 fA p-p Current Noise 0.1 Hz to 10 Hz
HIGH DC ACCURACY
250
m
V max Offset Voltage
1
m
V/
8
C max Drift
1.5 pA max Input Bias Current
114 dB Open-Loop Gain
Available in Plastic Mini-DIP, 8-Pin Header Packages, or
Chip Form
APPLICATIONS
Low Noise Photodiode Preamps
CT Scanners
Precision I-V Converters
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
PRODUCT DESCRIPTION
The AD645 is a low noise, precision FET input op amp. It of-
fers the pico amp level input currents of a FET input device
coupled with offset drift and input voltage noise comparable to a
high performance bipolar input amplifier.
The AD645 has been improved to offer the lowest offset drift in
a FET op amp, 1
μ
V/
°
C. Offset voltage drift is measured and
trimmed at wafer level for the lowest cost possible. An inher-
ently low noise architecture and advanced manufacturing tech-
niques result in a device with a guaranteed low input voltage
noise of 2
μ
V p-p, 0.1 Hz to 10 Hz. This level of dc performance
along with low input currents make the AD645 an excellent
choice for high impedance applications where stability is of
prime concern.
1k
100
1.0
10
10k
1k
1
10
100
V
n
FREQUENCY – Hz
Figure 1. AD645 Voltage Noise Spectral Density vs.
Frequency
CONNECTION DIAGRAMS
8-Pin Plastic Mini-DIP
(N) Package
TO-99 (H) Package
IMPROVED
DRFT
The AD645 is available in six performance grades. The AD645J
and AD645K are rated over the commercial temperature range
of 0
°
C to +70
°
C. The AD645A, AD645B, and the ultra-
precision AD645C are rated over the industrial temperature
range of –40
°
C to +85
°
C. The AD645S is rated over the military
temperature range of –55
°
C to +125
°
C and is available
processed to MIL-STD-883B.
The AD645 is available in an 8-pin plastic mini-DIP, 8-pin
header, or in die form.
PRODUCT HIGHLIGHTS
1. Guaranteed and tested low frequency noise of 2
μ
V p-p max
and 20 nV/
√
Hz
at 100 Hz makes the AD645C ideal for low
noise applications where a FET input op amp is needed.
2. Low V
OS
drift of 1
μ
V/
°
C max makes the AD645C an excel-
lent choice for applications requiring ultimate stability.
3. Low input bias current and current noise (11 fA p-p 0.1 Hz to
10 Hz) allow the AD645 to be used as a high precision
preamp for current output sensors such as photodiodes, or as
a buffer for high source impedance voltage output sensors.
INPUT OFFSET VOLTAGE DRIFT–
μ
V/
°
C
–0.5
–2.0
1.0
1.5
2.5
–2.5
–1.5
–1.0
0.5
2.0
0.0
N
0
15
5
10
30
25
20
Figure 2. Typical Distribution of Average Input Offset
Voltage Drift (196 Units)
OUTPUT
V
–
NOTE: CASE IS CONNECTED
TO PIN 8
OFFSET
NULL
IN
+
IN
–
CASE
3
4
5
6
7
8
AD645
1
2
OFFSET
NULL
+V
8
7
6
5
TOP VIEW
AD645
1
4
2
3
NC = NO CONNECT
OFFSET
NULL
–IN
NC
OUTPUT
OFFSET
NULL
–VS
+IN
+VS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD645S | Low Noise, Low Drift FET Op Amp |
| AD645A | Low Noise, Low Drift FET Op Amp |
| AD645AH | Low Noise, Low Drift FET Op Amp |
| AD645B | Low Noise, Low Drift FET Op Amp |
| AD645BH | Low Noise, Low Drift FET Op Amp |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD645S | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Noise, Low Drift FET Op Amp |
| AD645SH | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Operational Amplifier |
| AD645SH/883B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Noise, Low Drift FET Op Amp |
| AD647 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultralow Drift, Dual BiFET Op Amp |
| AD6472 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2 Pair/1 Pair ETSI Compatible HDSL Analog Front End |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。