參數資料
| 型號： | AD812AR-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 6/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP DUAL CURR-FDBK 8-SOIC |
| 標準包裝： | 2,500 |
| 應用： | 電流反饋 |
| 電路數： | 2 |
| -3db帶寬： | 145MHz |
| 轉換速率： | 1600 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： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
AD812
REV. B
–14–
1
10
1000
100
FREQUENCY – MHz
6
9
3
0
–3
CLOSED-LOOP
GAIN
–
dB
12
–6
–9
VS = 15V
G = +2
RF = 750
RL = 1k
CL = 510pF, RS = 15
CL = 150pF, RS = 30
Figure 43. Response to Large Load Capacitor, VS = ±15 V
10
100
0%
100ns
5V
VIN
VOUT
90
Figure 44. Pulse Response of Circuit of Figure 41 with
CL = 510 pF, RL = 1 k
, R
F = RG = 715
, R
S = 15
Overload Recovery
There are three important overload conditions to consider.
They are due to input common mode voltage overdrive, input
current overdrive, and output voltage overdrive. When the
amplifier is configured for low closed-loop gains, and its input
common-mode voltage range is exceeded, the recovery time will
be very fast, typically under 10 ns. When configured for a higher
gain, and overloaded at the output, the recovery time will also
be short. For example, in a gain of +10, with 6 dB of input
overdrive, the recovery time of the AD812 is about 10 ns.
10
90
100
0%
2V
1V
50ns
VIN
VOUT
Figure 45. 6 dB Overload Recovery; G = 10, RL = 500 ,
VS = ±5 V
In the case of high gains with very high levels of input overdrive,
a longer recovery time may occur. For example, if the input
common-mode voltage range is exceeded in a gain of +10, the
recovery time will be on the order of 100 ns. This is primarily
due to current overloading of the input stage.
As noted in the warning under “Maximum Power Dissipation,”
a high level of input overdrive in a high noninverting gain circuit
can result in a large current flow in the input stage. For differ-
ential input voltages of less than about 1.25 V, this will be inter-
nally limited to less than 20 mA (decreasing with supply voltage).
For input overdrives which result in higher differential input
voltages, power dissipation in the input stage must be consid-
ered. It is recommended that external diode clamps be used in
cases where the differential input voltage is expected to exceed
1.25 V.
High Performance Video Line Driver
At a gain of +2, the AD812 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. Outstanding gain and group
delay matching are also attainable over the full operating supply
voltage range.
AD812
8
4
RG
RF
VIN
75
VOUT
75
+VS
0.1 F
–VS
75
CABLE
75
CABLE
75
Figure 46. Gain of +2 Video Line Driver (RF = RG from
Table I)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD812AR-REEL7 | 功能描述:IC OPAMP DUAL CURR-FDBK 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數:3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| AD812ARZ | 功能描述:IC OPAMP DUAL CURR-FDBK 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 應用:TFT-LCD 面板：VCOM 驅動器 輸出類型:滿擺幅 電路數:1 -3db帶寬:35MHz 轉換速率:40 V/µs 電流 - 電源:3.7mA 電流 - 輸出 / 通道:1.3A 電壓 - 電源，單路/雙路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 供應商設備封裝:8-uMax-EP 包裝:管件 |
| AD812ARZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| AD812ARZ-REEL | 功能描述:IC OPAMP DUAL CURR-FDBK 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數:3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| AD812ARZ-REEL7 | 功能描述:IC OPAMP DUAL CURR-FDBK 8-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數:3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
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