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參數(shù)資料
型號(hào): ADG782BCPZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 6/9頁(yè)
文件大小: 0K
描述: IC SWITCH QUAD SPST 20LFCSP
產(chǎn)品變化通告: Product Discontinuance 27/Oct/2011
標(biāo)準(zhǔn)包裝: 490
功能: 開關(guān)
電路: 4 x SPST - NO
導(dǎo)通狀態(tài)電阻: 4 歐姆
電壓電源: 單電源
電壓 - 電源,單路/雙路(±): 1.8 V ~ 5.5 V
電流 - 電源: 1nA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 20-LFCSP
包裝: 托盤
REV.
ADG781/ADG782/ADG783
–6–
FREQUENCY – Hz
–30
OFF
ISOLATION
dB
–40
–110
–120
–130
10k
100k
1M
10M
100M
–100
–90
–80
–70
–60
–50
VDD = 5V, 3V
TPC 5. Off Isolation vs. Frequency
FREQUENCY – Hz
–30
CROSSTALK
dB
–40
–110
–120
–130
10k
100k
1M
10M
VDD = 5V, 3V
100M
–100
–90
–80
–70
–60
–50
TPC 6. Crosstalk vs. Frequency
FREQUENCY – Hz
0
ON
RESPONSE
dB
–6
10k
100k
1M
10M
VDD = 5V
100M
–4
–2
TPC 7. On Response vs. Frequency
SOURCE VOLTAGE – V
25
Q
INJ
pC
–10
0
0.5
–5
0
20
15
10
5
1
1.5
2
2.5
3
3.5
4
4.5
5
VDD = 5V
VDD = 3V
TA = 25 C
TPC 8. Charge Injection vs. Source Voltage
APPLICATIONS
Figure 1 illustrates a photodetector circuit with programmable
gain. An AD820 is used as the output operational amplifier.
With the resistor values shown in the circuit, and using different
combinations of the switches, gain in the range of 2 to 16 can
be achieved.
5V
2.5V
R3
510k
C1
VOUT
GND
D1
S1
D1
GAIN RANGE 2 TO 16
5V
AD820
S2
D2
S3
D3
S4
D4
(LSB) IN1
IN2
IN3
(MSB) IN4
R4
240k
R5
240k
R6
120k
R7
120k
R8
120k
R9
120k
R10
120k
R1
33k
R2
510k
2.5V
Figure 1. Photodetector Circuit with Programmable Gain
C
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