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| 型号： | AD847JRZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 50MHZ LP 32MA 8SOIC |
| 标准包装： | 750 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 转换速率： | 300 V/µs |
| 增益带宽积： | 50MHz |
| 电流 - 输入偏压： | 3.3µA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 5.3mA |
| 电流 - 输出 / 通道： | 32mA |
| 电压 - 电源，单路/双路(±)： | ±4.5 V ~ 18 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
| 其它名称： | AD847JRZ-REEL7-ND AD847JRZ-REEL7TR |
AD847
REV. F
–10–
VIDEO LINE DRIVER
The AD847 functions very well as a low cost, high speed line
driver for either terminated or unterminated cables. Figure 23
shows the AD847 driving a doubly terminated cable in a fol-
lower configuration.
The termination resistor, RT, (when equal to the cable’s charac-
teristic impedance) minimizes reflections from the far end of the
cable. While operating from
±5 V supplies, the AD847 main-
tains a typical slew rate of 200 V/
s, which means it can drive a
±1 V, 30 MHz signal into a terminated cable.
0.1
F
0.1
F
500
500
75
AD847
75
75
R T
RBT
C
SEE TABLE I
+VS
V
IN
VOUT
–V
S
IN
R
100
75
COAX
75
COAX
Figure 23. Video Line Driver
Table I. Video Line Driver Performance Chart
Over-
VIN*VSUPPLY
CC
–3 dB BW shoot
0 dB or
±500 mV Step
±15
20 pF
23 MHz
4%
0 dB or
±500 mV Step
±15
15 pF
21 MHz
0%
0 dB or
±500 mV Step
±15
0 pF
13 MHz
0%
0 dB or
±500 mV Step
±5
20 pF
18 MHz
2%
0 dB or
±500 mV Step
±5
15 pF
16 MHz
0%
0 dB or
±500 mV Step
±5
0 pF
11 MHz
0%
*–3 dB bandwidth numbers are for the 0 dBm signal input. Overshoot numbers
are the percent overshoot of the 1 volt step input.
A back-termination resistor (RBT, also equal to the characteristic
impedance of the cable) may be placed between the AD847 out-
put and the cable input, in order to damp any reflected signals
caused by a mismatch between RT and the cable’s characteristic
impedance. This will result in a flatter frequency response, al-
though this requires that the op amp supply
±2 V to the output
in order to achieve a
±1 V swing at resistor R
T.
Figure 24 shows the AD847 driving 100 pF and 1000 pF loads.
Figure 24. AD847 Driving Capacitive Loads
FLASH ADC INPUT BUFFER
The 35 MHz unity gain bandwidth of the AD847 makes it an
excellent choice for buffering the input of high speed flash A/D
converters, such as the AD9048.
Figure 25 shows the AD847 as a unity inverter for the input to
the AD9048.
AD9048
50
1.5k
10k
2k
0.1
100
27
2N3906
AD741
5
0.1
F
RB
RT
VIN
VCC
AD847
1.5k
V
EE
ANALOG
INPUT
(0V TO +2V)
TTL
CONVERT
SIGNAL
0.1
F
0.1
F
–5.2V +5.0V
CONVERT
D1
(MSB)
D8
(LSB)
–5.2V
43
1k
AD589
Figure 25. Flash ADC Input Buffer
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD847S | 制造商:AD 制造商全称:Analog Devices 功能描述:High Speed, Low Power Monolithic Op Amp |
| AD847SCHIPS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| AD847SQ | 功能描述:IC OPAMP GP 50MHZ LP 32MA 8CDIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:带卷 (TR) |
| AD847SQ/883B | 制造商:Analog Devices 功能描述:OP Amp Single GP ±18V 8-Pin CDIP 制造商:Analog Devices 功能描述:OP AMP SGL GP 18V 8CDIP - Rail/Tube 制造商:Analog Devices 功能描述:IC AMP HIGH SPEED 制造商:Analog Devices Inc. 功能描述:Precision Amplifiers High Spd Low Pwr Monolithic 制造商:Analog Devices Inc. 功能描述:Precision Amplifiers LOW POWER HIGH SPEED AMP |
| AD847SQ883B | 制造商:AD 功能描述:* |
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