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參數資料
型號: AD790AQ
廠商: ANALOG DEVICES INC
元件分類: 運動控制電子
英文描述: Fast, Precision Comparator
中文描述: COMPARATOR, 1500 uV OFFSET-MAX, 50 ns RESPONSE TIME, CDIP8
封裝: HERMETIC SEALED, CERDIP-8
文件頁數: 7/8頁
文件大?。?/td> 211K
代理商: AD790AQ
REV. B
–7–
AD790
1
2
3
4
5
6
7
8
+IN
–IN
5V
+
OUT
510
+12V
0.1μF
0.1μF
+V
S
= +12V, –V
S
= 0V
V
LOGIC
= +5V
AD790
1
2
3
4
5
6
7
8
5V
+
OUT
15V
+V
S
= +5V, –V
S
= –15V
V
LOGIC
= +5V
0.1μF
0.1μF
+IN
–IN
AD790
1
2
3
4
5
6
7
8
5V
+
OUT
5V
0.1μF
0.1μF
+IN
–IN
+V
S
= +5V, –V
S
= –5V, V
LOGIC
= +5V
Figure 15. Typical Power Supply Connections
(N, Q Package Pinout)
Window Comparator for Overvoltage Detection
T he wide differential input range of the AD790 makes it suit-
able for monitoring large amplitude signals. T he simple over-
voltage detection circuit shown in Figure 16 illustrates direct
connection of the input signal to the high impedance inputs of
the comparator without the need for special clamp diodes to
limit the differential input voltage across the inputs.
510
OVERRANGE = 1
7432
AD790
1
2
3
4
5
6
7
8
+15V
+5V
–15V
AD790
1
2
3
4
5
6
7
8
+15V
+5V
–15V
V
IN
510
0.1μF
0.1μF
0.1μF
0.1μF
0.1μF
0.1μF
SIGN 1 = HIGH
0 = LOW
–7.5V
+7.5V
Figure 16. Overvoltage Detector
(N, Q Package Pinout)
Single Supply Ground Referred Overload Detector
T he AD790 is useful as an overload detector for sensitive loads
that must be powered from a single supply. A simple ground
referenced overload detector is shown in Figure 16. T he com-
parator senses a voltage across a PC board trace and compares
that to a reference (trip) voltage established by the comparator’s
minus supply current through a 2.7
resistor. T his sets up a
Applying the AD790
10 mV reference level that is compared to the sense voltage.
T he minus supply current is proportional to absolute tempera-
ture and compensates for the change in the sense resistance
with temperature. T he width and length of the PC board trace
determine the resistance of the trace and consequently the trip
current level.
I
LIMIT
= 10 mV/R
SENSE
R
SENSE
= rho (trace length/trace width)
rho = resistance of a unit square of trace
L
O
A
D
2.7‰
PC BOARD
TRACE
AD790
1
2
3
4
5
6
7
8
0.1μF
5V
+
OUTPUT
R
SENSE
10mV/100mA
+V
S
510
Figure 17. Ground Referred Overload Detector Circuit
(N, Q Package Pinout)
Precision Full-Wave Rectifier
T he high speed and precision of the AD790 make it suitable for
use in the wide dynamic range full-wave rectifier shown in Fig-
ure 18. T his circuit is capable of rectifying low level signals as
small as a few mV or as high as 10 V. Input resolution, propaga-
tion delay and op amp settling will ultimately limit the maximum
input frequency for a given accuracy level. T otal comparator
plus switch delay is approximately 100 ns, which limits the
maximum input frequency to 1 MHz for clean rectification.
AD711
10k
FET SWITCHES THE GAIN
FROM +1 TO –1
20k
10k
AD790
1
2
3
4
5
6
7
8
+15V
+5V
–15V
2
3
4
6
7
+15V
–15V
V
IN
V
OUT
NMOS
FET
(R
ON
< 20 )
0.1μF
510
0.1μF
0.1μF
0.1μF
0.1μF
Figure 18. Precision Full-Wave Rectifier
(N, Q Package Pinout)
相關PDF資料
PDF描述
AD790BQ Fast, Precision Comparator
AD790JN Fast, Precision Comparator
AD790JR Fast, Precision Comparator
AD790KN Fast, Precision Comparator
AD790SQ Fast, Precision Comparator
相關代理商/技術參數
參數描述
AD790BQ 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, Precision Comparator
AD790JN 功能描述:IC PREC COMPARATOR HS 8-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數:1 輸出類型:CMOS,推挽式,滿擺幅,TTL 電壓 - 電源,單路/雙路(±):2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V 電壓 - 輸入偏移(最小值):5mV @ 5.5V 電流 - 輸入偏壓(最小值):1pA @ 5.5V 電流 - 輸出(標準):- 電流 - 靜態(最大值):24µA CMRR, PSRR(標準):80dB CMRR,80dB PSRR 傳輸延遲(最大):450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA,CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586
AD790JNZ 功能描述:IC PREC COMPARATOR HS 8-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標準包裝:1 系列:- 類型:通用 元件數:1 輸出類型:CMOS,開路集電極,TTL 電壓 - 電源,單路/雙路(±):2.7 V ~ 5.5 V 電壓 - 輸入偏移(最小值):7mV @ 5V 電流 - 輸入偏壓(最小值):0.25µA @ 5V 電流 - 輸出(標準):84mA @ 5V 電流 - 靜態(最大值):120µA CMRR, PSRR(標準):- 傳輸延遲(最大):600ns 磁滯:- 工作溫度:-40°C ~ 85°C 封裝/外殼:SC-74A,SOT-753 安裝類型:表面貼裝 包裝:剪切帶 (CT) 產品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT
AD790JR 功能描述:IC PREC COMPARATOR HS 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數:1 輸出類型:CMOS,推挽式,滿擺幅,TTL 電壓 - 電源,單路/雙路(±):2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V 電壓 - 輸入偏移(最小值):5mV @ 5.5V 電流 - 輸入偏壓(最小值):1pA @ 5.5V 電流 - 輸出(標準):- 電流 - 靜態(最大值):24µA CMRR, PSRR(標準):80dB CMRR,80dB PSRR 傳輸延遲(最大):450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA,CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586
AD790JR-REEL 功能描述:IC COMPARATOR PREC W/LATCH 8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數:1 輸出類型:CMOS,推挽式,滿擺幅,TTL 電壓 - 電源,單路/雙路(±):2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V 電壓 - 輸入偏移(最小值):5mV @ 5.5V 電流 - 輸入偏壓(最小值):1pA @ 5.5V 電流 - 輸出(標準):- 電流 - 靜態(最大值):24µA CMRR, PSRR(標準):80dB CMRR,80dB PSRR 傳輸延遲(最大):450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA,CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586
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