參數(shù)資料
型號: AD813ARZ-14
廠商: Analog Devices Inc
文件頁數(shù): 8/19頁
文件大?。?/td> 0K
描述: IC TRPL VIDEO AMP SNGL LP 14SOIC
標準包裝: 56
應用: 電流反饋
電路數(shù): 3
-3db帶寬: 100MHz
轉換速率: 250 V/µs
電流 - 電源: 4.5mA
電流 - 輸出 / 通道: 50mA
電壓 - 電源,單路/雙路(±): 2.4 V ~ 36 V,±1.2 V ~ 18 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 14-SOICN
包裝: 管件
產(chǎn)品目錄頁面: 764 (CN2011-ZH PDF)
AD813
REV. B
–16–
High Performance Video Line Driver
At a gain of +2, the AD813 makes an excellent driver for a back
terminated 75
video line. Low differential gain and phase
errors and wide 0.1 dB bandwidth can be realized over a wide
range of power supply voltage. Excellent gain and group delay
matching are also attainable over the full operating supply volt-
age range.
75
AD813
4
11
RG
RF
VIN
VOUT
75
+VS
0.1 F
–VS
75
CABLE
75
CABLE
Figure 46. A Video Line Driver Operating at a Gain of
+2 (RF = RG from Table I)
G = +2
RL = 150
5V
3V
1
10
1000
100
FREQUENCY – MHz
–1
–6
+1
0
–2
–3
–4
–5
CLOSED-LOOP
GAIN
(NORMALIZED)
dB
+90
0
–90
–180
–270
PHASE
SHIFT
Degrees
PHASE
GAIN
VS = 15V
5V
VS = 15V
5V
3V
5V
Figure 47. Closed-Loop Gain & Phase vs. Frequency for
the Line Driver
216
14
12
10
8
6
4
SUPPLY VOLTAGE – Volts
–3dB
BANDWIDTH
MHz
40
30
70
50
60
80
90
20
100
110
120
20
18
0
NO PEAKING
RF = 590
RF = 681
RF = 750
Figure 48. –3 dB Bandwidth vs. Supply Voltage for
Gain = +2, RL = 150
100k
1M
100M
10M
FREQUENCY – Hz
0
0.2
0.1
–0.1
–0.2
–0.3
–0.4
NORMALIZED
GAIN
dB
–0.5
3V
15V
5V
G = +2
RL = 150
5V
Figure 49. Fine-Scale Gain (Normalized) vs. Frequency
1
10
1000
100
FREQUENCY – MHz
0
1.0
0.5
–0.5
–1.0
–1.5
–2.0
GAIN
MATCHING
dB
1.5
2.0
–2.5
2.5
VS = 15V
VS = 3V
G = +2
RL = 150
Figure 50. Closed-Loop Gain Matching vs. Frequency
100k
1M
100M
10M
FREQUENCY – Hz
4
2
1.0
0.5
0
–0.5
GROUP
DELAY
ns
6
8
–1.0
10
V
S =
15V
3V
V
S = 3V
DELAY
DELAY MATCHING
15V
5V
Figure 51. Group Delay and Group Delay Matching vs.
Frequency, G = +2, RL = 150
Figures 50 and 51 show the worst case matching; the match
between amplifiers 2 and 3 is typically much better than this.
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