전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

AD624 데이터시트(PDF) 11 Page - Analog Devices

부품명 AD624
상세설명  Precision Instrumentation Amplifier
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD624 데이터시트(HTML) 11 Page - Analog Devices

Back Button AD624 Datasheet HTML 7Page - Analog Devices AD624 Datasheet HTML 8Page - Analog Devices AD624 Datasheet HTML 9Page - Analog Devices AD624 Datasheet HTML 10Page - Analog Devices AD624 Datasheet HTML 11Page - Analog Devices AD624 Datasheet HTML 12Page - Analog Devices AD624 Datasheet HTML 13Page - Analog Devices AD624 Datasheet HTML 14Page - Analog Devices AD624 Datasheet HTML 15Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 11 / 15 page
background image
REV. C
AD624
–11–
By establishing a reference at the “low” side of a current setting
resistor, an output current may be defined as a function of input
voltage, gain and the value of that resistor. Since only a small
current is demanded at the input of the buffer amplifier A2, the
forced current IL will largely flow through the load. Offset and
drift specifications of A2 must be added to the output offset and
drift specifications of the IA.
PROGRAMMABLE GAIN
Figure 38 shows the AD624 being used as a software program-
mable gain amplifier. Gain switching can be accomplished with
mechanical switches such as DIP switches or reed relays. It
should be noted that the “on” resistance of the switch in series
with the internal gain resistor becomes part of the gain equation
and will have an effect on gain accuracy.
A significant advantage in using the internal gain resistors in a
programmable gain configuration is the minimization of thermo-
couple signals which are often present in multiplexed data
acquisition systems.
If the full performance of the AD624 is to be achieved, the user
must be extremely careful in designing and laying out his circuit
to minimize the remaining thermocouple signals.
The AD624 can also be connected for gain in the output stage.
Figure 39 shows an AD547 used as an active attenuator in the
output amplifier’s feedback loop. The active attenuation pre-
sents a very low impedance to the feedback resistors therefore
minimizing the common-mode rejection ratio degradation.
Another method for developing the switching scheme is to use a
DAC. The AD7528 dual DAC which acts essentially as a pair of
switched resistive attenuators having high analog linearity and
symmetrical bipolar transmission is ideal in this application. The
multiplying DAC’s advantage is that it can handle inputs of
either polarity or zero without affecting the programmed gain.
The circuit shown uses an AD7528 to set the gain (DAC A) and
to perform a fine adjustment (DAC B).
VDD GND
225.3
124
4445.7
80.2
50
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
10k
20k
VB
20k
10k
10k
50
–VS
+VS
1 F
35V
–IN
+IN
10k
10k
INPUT
OFFSET
NULL
OUTPUT
OFFSET
NULL
10k
TO –V
(+INPUT)
(–INPUT)
VOUT
39.2k
WR
A4
A3
A2
A1
VSS
1k
10pF
+VS
28.7k
316k
1k
1k
–VS
AD624
AD7590
AD711
Figure 39. Programmable Output Gain
225.3
124
4445.7
80.2
50
G = 100
K1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
10k
20k
VB
20k
10k
10k
50
–VS
+VS
1 F
35V
–IN
+IN
R2
10k
R1
10k
INPUT
OFFSET
TRIM
OUTPUT
OFFSET
TRIM
RELAY
SHIELDS
G = 200
K2
G = 500
K3
D1
D2
D3
Y0
K2
K3
74LS138
DECODER
7407N
BUFFER
DRIVER
A
B
Y1
Y2
INPUTS
GAIN
RANGE
+5V
10 F
C1
C2
K1 – K3 =
THERMOSEN DM2C
4.5V COIL
D1 – D3 = IN4148
ANALOG
COMMON
GAIN TABLE
A
B
GAIN
0
0
100
0
1
500
1
0
200
11
1
LOGIC
COMMON
K1
OUT
10k
+5V
AD624
NC
Figure 38. Gain Programmable Amplifier


유사한 부품 번호 - AD624

제조업체부품명데이터시트상세설명
logo
Analog Devices
AD624 AD-AD624 Datasheet
595Kb / 24P
   Precision, Dual-Channel Instrumentation Amplifier
REV. 0
AD624 AD-AD624 Datasheet
217Kb / 10P
   10 MHz, 20 V/關s, G = 1, 10, 100, 1000 i CMOS짰 Programmable Gain Instrumentation Amplifier
Rev. prA
AD624 AD-AD624 Datasheet
284Kb / 20P
   Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
Rev. PrD
AD624 AD-AD624 Datasheet
378Kb / 20P
   Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier
REV. 0
AD624 AD-AD624 Datasheet
529Kb / 28P
   Wide Supply Range, Micropower,
REV. 0
More results

유사한 설명 - AD624

제조업체부품명데이터시트상세설명
logo
Burr-Brown (TI)
INA114AG BURR-BROWN-INA114AG Datasheet
430Kb / 13P
   Precision INSTRUMENTATION AMPLIFIER
logo
Analog Devices
AD624 AD-AD624_16 Datasheet
468Kb / 17P
   Precision Instrumentation Amplifier
logo
Texas Instruments
INA114 TI1-INA114 Datasheet
758Kb / 17P
[Old version datasheet]   Precision INSTRUMENTATION AMPLIFIER
logo
Burr-Brown (TI)
INA115 BURR-BROWN-INA115 Datasheet
211Kb / 11P
   Precision INSTRUMENTATION AMPLIFIER
logo
Analog Devices
AD620MIL AD-AD620MIL_15 Datasheet
1Mb / 4P
   PRECISION INSTRUMENTATION AMPLIFIER
REV. A
AD524SE AD-AD524SE Datasheet
614Kb / 28P
   Precision Instrumentation Amplifier
Rev. F
AD624ADZ AD-AD624ADZ Datasheet
574Kb / 17P
   Precision Instrumentation Amplifier
REV. C
AD8221 AD-AD8221_15 Datasheet
512Kb / 24P
   Precision Instrumentation Amplifier
REV. C
AD524 AD-AD524_16 Datasheet
519Kb / 29P
   Precision Instrumentation Amplifier
AD8221 AD-AD8221_16 Datasheet
668Kb / 25P
   Precision Instrumentation Amplifier
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com