The LMH6505 is a wideband DC coupled voltage controlled gain stage followed by a high speed current feedback operational amplifier which can directly drive a low impedance load. The gain adjustment range is 80 dB for up to 10 MHz which is accomplished by varying the gain control input voltage, V_G.

Maximum gain is set by external components, and the gain can be reduced all the way to cutoff. Power consumption is 110 mW with a speed of 150 MHz and a gain control bandwidth (BW) of 100 MHz. Output referred DC offset voltage is less than 55 mV over the entire gain control voltage range. Device-to-device gain matching is within ±0.5 dB at maximum gain. Furthermore, gain is tested and ensured over a wide range. The output current feedback op amp allows high frequency large signals (Slew Rate = 1500 V/μs) and can also drive a heavy load current (60 mA) ensured.

Near ideal input characteristics (i.e. low input bias current, low offset, low pin 3 resistance) enable the device to be easily configured as an inverting amplifier as well.

To provide ease of use when working with a single supply, the V_G range is set to be from 0V to +2V relative to the ground pin potential (pin 4). V_G input impedance is high in order to ease drive requirement. In single supply operation, the ground pin is tied to a "virtual" half supply.

The LMH6505’s gain control is linear in dB for a large portion of the total gain control range from 0 dB down to −85 dB at 25°C, as shown below. This makes the device suitable for AGC applications. For linear gain control applications, see the LMH6503 datasheet.

The LMH6505 is available in either the 8-Pin SOIC or the 8-Pin VSSOP package. The combination of minimal external components and small outline packages allows the LMH6505 to be used in space-constrained applications.

• VS = ±5V, TA = 25°C, RF = 1 k?, RG = 100?, RL = 100?, AV = AVMAX = 9.4 V/V, Typical Values Unless Specified.
• ?3 dB BW 150 MHz
• Gain Control BW 100 MHz
• Adjustment Range (<10 MHz) 80 dB
• Gain Matching (Limit) ±0.50 dB
• Supply Voltage Range 7V to 12V
• Slew Rate (Inverting) 1500 V/μs
• Supply Current (No Load) 11 mA
• Linear Output Current ±60 mA
• Output Voltage Swing ±2.4V
• Input Noise Voltage 4.4 nV/√Hz
• Input Noise Current 2.6 pA/√Hz
• THD (20 MHz, RL = 100?, VO = 2 VPP) ?45 dBc

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• PGA/VGA
• VGA
• Number of channels (#)
• 1
• BW @ Acl (MHz)
• 150
• Vs (Max) (V)
• 12
• Vs (Min) (V)
• 7
• Acl, min spec gain (V/V)
• 1
• Gain (Max) (dB)
• 40
• Slew rate (Typ) (V/us)
• 1500
• Operating temperature range (C)
• -40 to 85
• Features
• Analog Gain Set, Differential to Single-ended conversion

LMH6505的完整型号有：LMH6505MA/NOPB、LMH6505MAX/NOPB、LMH6505MM/NOPB，以下是这些产品的关键参数及官网采购报价：

LMH6505MA/NOPB，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMH6505MA/NOPB的批量USD价格：3.01（1000+）

LMH6505MAX/NOPB，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMH6505MAX/NOPB的批量USD价格：2.547（1000+）

LMH6505MM/NOPB，工作温度：-40 to 85，封装：VSSOP (DGK)-8，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMH6505MM/NOPB的批量USD价格：2.547（1000+）

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