參數(shù)資料
型號： AD524CDZ
廠商： Analog Devices Inc
文件頁數(shù)： 13/28頁
文件大?。?/td> 0K
描述： IC AMP INST 1MHZ PREC LN 16CDIP
標準包裝： 1
放大器類型： 儀表
電路數(shù)： 1
轉(zhuǎn)換速率： 5 V/µs
增益帶寬積： 1MHz
-3db帶寬： 1MHz
電流 - 輸入偏壓： 15nA
電壓 - 輸入偏移： 50µV
電流 - 電源： 3.5mA
電壓 - 電源，單路/雙路(±)： ±6 V ~ 18 V
工作溫度： -25°C ~ 85°C
安裝類型： 通孔
封裝/外殼： 16-CDIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 16-CDIP 側(cè)面銅焊
包裝： 管件
產(chǎn)品目錄頁面： 770 (CN2011-ZH PDF)
AD524
Rev. F | Page 20 of 28
PROGRAMMABLE GAIN
Figure 47 shows the AD524 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 has
an effect on gain accuracy.
The AD524 can also be connected for gain in the output stage.
Figure 48 shows an AD711 used as an active attenuator in the
output amplifier’s feedback loop. The active attenuation presents
very low impedance to the feedback resistors, therefore
minimizing the common-mode rejection ratio degradation.
TO –V
AD524
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
20k
404
4.44k
20k
40
PROTECTION
–IN
+IN
(+INPUT)
(–INPUT)
10k
10pF
20k
AD711
AD7590
GND
39.2k
28.7k
316k
1k
A4
A3
A2
WR
–VS
+VS
1F
35V
INPUT
OFFSET
NULL
+VS
OUTPUT
OFFSET
NULL
R2
10k
VOUT
+VS
–VS
VDD
VSS VDD
15
13
11
9
2
14
12
10
34
5
67
18
16
00
50
0-
04
8
+
–
+
–
Figure 48. Programmable Output Gain
2
1
10
6
AD524
DAC A
DB0
256:1
20k
G = 10
G = 100
G = 1000
4.44k
404
40
PROTECTION
20k
DAC B
DB7
AD7528
9
16
11
12
PROTECTION
3
13
RG1
RG2
Vb
+INPUT
(–INPUT)
–INPUT
(+INPUT)
VOUT
CS
WR
1/2
AD712
1/2
AD712
DATA
INPUTS
DAC A/DAC B
+VS
4
14
7
15
16
6
18
5
17
3
2
1
19
20
0050
0-
0
49
Figure 49. Programmable Output Gain Using a DAC
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).
AUTOZERO CIRCUITS
In many applications, it is necessary to provide very accurate
data in high gain configurations. At room temperature, the
offset effects can be nulled by the use of offset trim potenti-
ometers. Over the operating temperature range, however,
offset nulling becomes a problem. The circuit of Figure 50
shows a CMOS DAC operating in bipolar mode and connected
to the reference terminal to provide software controllable offset
adjustments.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD524CE 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:
AD524S 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Instrumentation Amplifier
AD524SCHIPS 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Instrumentation Amplifier
AD524SD 功能描述:IC AMP INST 1MHZ PREC LN 16CDIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT
AD524SD/883B 功能描述:儀表放大器 PRECISION LOW NOISE IN AM RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
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