The AD847 represents a breakthrough in high speed amplifiers offering superior ac & dc performance and low power, all at low cost. The excellent dc performance is demonstrated by its ±5 V
REV. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.specifications which include an open-loop gain of 3500 V/V(500 Ω load) and low input offset voltage of 0.5 mV. Common-mode rejection is a minimum of 78 dB. Output voltage swing is ±3 V into loads as low as 150 Ω. Analog Devices also offers over 30 other high speed amplifiers from the low noise AD829(1.7 nV/√Hz) to the ultimate video amplifier, the AD811, which features 0.01% differential gain and 0.01° differential phase.
AD847AQ应用范围
1. As a buffer the AD847 offers a full-power bandwidth of 12.7 MHz (5 V p-p with ±5 V supplies) making it outstand-ing as an input buffer for flash A/D converters.
2. The low power and small outline package of the AD847 make it very well suited for high density applications such as multiple pole active filters.
3. The AD847 is internally compensated for unity gain opera-tion and remains stable when driving any capacitive load.
AD847AQ最大额定值
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .±18 V
Internal Power Dissipation2
Plastic (N) . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Watts
Small Outline (R) . . . . . . . . . . . . . . . . . . . . . 0.8 Watts
Cerdip (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Watts
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . ±6 V
Storage Temperature Range (Q) . . . . . . . –65°C to +150°C
(N, R) . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . 175°C
Lead Temperature Range (Soldering 60 sec) . . . . . +300°C
AD847AQ注释
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Cerdip Package: èJA = 110°C/Watt; èJC = 30°C/Watt
Small Outline Package: èJA = 155°C/Watt; èJC = 33°C/Watt
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 volts, which readily accumulate on the human body and on test equipment, can discharge without de-tection. Although the AD847 features proprietary ESD protec-tion circuitry, permanent damage may still occur on these devices if they are subjected to high energy electrostatic dis-charges. Therefore, proper ESD precautions are recommended to avoid any performance degradation or loss of functionality.
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