The LMH6522 contains four, high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically, the LMH6522 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.

Each channel of LMH6522 has an independent, digitally controlled attenuator and a high linearity, differential output, amplifier. All circuitry has been optimized for low distortion and maximum system design flexibility. Power consumption is managed by a three-state enable pin. Individual channels can be disabled or placed into a Low Power Mode or a higher performance, High Power Mode.

The LMH6522 digitally controlled attenuator provides precise 1dB gain steps over a 31dB range. The digital attenuator can be controlled by either a SPI Serial bus or a high speed parallel bus.

The output amplifier has a differential output, allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving a wide range filter designs or analog to digital converters. For applications which have very large changes in signal level LMH6522 can support up to 62dB of gain range by cascading channels.

The LMH6522 operates over the industrial temperature range of −40°C to +85°C. The LMH6522 is available in a 54-Pin, thermally enhanced, WQFN package.

• OIP3: 49dBm @ 200MHz
• Noise Figure: 8.5dB
• Voltage Gain: 26dB
• 1dB Gain Steps
• ?3dB Bandwidth of 1400 MHz
• Gain Step Accuracy: 0.2 dB
• Disable Function for Each Channel
• Parallel and Serial Gain Control
• Low Power Mode for Power Management Flexibility
• Small Footprint WQFN Package

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• 2nd harmonic (dBc)
• 78
• 3rd harmonic (dBc)
• 75
• @ MHz
• 200
• Acl, min spec gain (V/V)
• 0.61
• Architecture
• VGA, Fully Differential ADC Driver
• BW @ Acl (MHz)
• 1400
• Gain (Max) (dB)
• 25.74
• Gain (Min) (dB)
• -4.3
• Step size (dB)
• 0.2
• Type
• RF VGA
• Iq per channel (Typ) (mA)
• 116
• Number of channels (#)
• 4
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85
• Total supply voltage (Max) (+5V=5, +/-5V=10)
• 5.25
• Total supply voltage (Min) (+5V=5, +/-5V=10)
• 4.75
• Vs (Min) (V)
• 4.75
• Vs (Max) (V)
• 5.25

LMH6522的完整型号有：LMH6522SQ/NOPB、LMH6522SQE/NOPB，以下是这些产品的关键参数及官网采购报价：

LMH6522SQ/NOPB，工作温度：-40 to 85，封装：WQFN (NJY)-54，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网LMH6522SQ/NOPB的批量USD价格：8.964（1000+）

LMH6522SQE/NOPB，工作温度：-40 to 85，封装：WQFN (NJY)-54，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网LMH6522SQE/NOPB的批量USD价格：10.757（1000+）

LMH6522EVAL — LMH6522EVAL 评估模块

LMH6522EVAL 评估板旨在为 LMH6522 四路数字控制可变增益放大器 (DVGA) 的测试和测量提供便利。该板配置为 50 欧姆单端信号路径，用于标准实验室设备。LMH6522EVAL 板提供开关控制的增益配置，可以连接外部微控制器进行 SPI 控制。