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| 型號： | AD600ARZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 20/33頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VGA DUAL LN 50MA 16SOIC |
| 標準包裝： | 400 |
| 系列： | X-AMP® |
| 放大器類型： | 可變增益 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 275 V/µs |
| -3db帶寬： | 35MHz |
| 電流 - 輸入偏壓： | 350nA |
| 電流 - 電源： | 11mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 16-SOIC W |
| 包裝： | 帶卷 (TR) |
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AD600/AD602
Rev. F | Page 26 of 32
For the next 40 dB of control range, the gain of U1A remains
fixed at its maximum value of 41.07 dB and only the gain of
U1B is varied, while that of U2A remains at its minimum value
of 1.07 dB. In this interval, the fixed output noise of U1A is
amplified by the increasing gain of U1B, and the SNR
progressively decreases.
Once U1B reaches its maximum gain of 41.07 dB, its output
also becomes a gain-independent noise source; this noise is
presented to U2A. As the control voltage is further increased,
the gains of both U1A and U1B remain fixed at their maximum
value of 41.07 dB, and the SNR continues to decrease. Figure 56
clearly shows this because the maximum SNR of 90 dB is
extended for the first 40 dB of input signal before it starts to roll off.
This arrangement of staggered gains can be easily implemented
because, when the control inputs of the AD600 are overdriven,
the gain limits to its maximum or minimum values without side
effects. This eliminates the need for awkward nonlinear shaping
circuits that have previously been used to break up the gain
range of multistage AGC amplifiers. The precise values of the
AD600’s maximum and minimum gain (not 0 dB and +40 dB
but 1.07 dB and +41.07 dB) explain the rather odd values of
the offset values that are used.
The optimization of the output SNR is of obvious value in AGC
systems. However, in applications where these circuits are
considered for their wide range logarithmic measurement
capabilities, the inevitable degradation of the SNR at high gains
need not seriously impair their utility. In fact, the bandwidth of
the circuit shown in Figure 47 was specifically chosen to improve
measurement accuracy by altering the shape of the log error
curve at low signal levels (see Figure 53).
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| AD600ARZ-RL | 功能描述:IC AMP VGA DUAL LN 50MA 16SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 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) |
| AD600EHDK42GIS | 制造商:Advanced Micro Devices 功能描述:EB E64 4C 600E AM3 45W - Trays |
| AD600EHDK42GMS | 制造商:Advanced Micro Devices 功能描述:EB E64 4C 600E AM3 45W - Trays |
| AD600J | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual, Low Noise, Wideband Variable Gain Amplifiers |
| AD600JN | 功能描述:IC AMP VGA DUAL LN 50MA 16DIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 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-SO 包裝:帶卷 (TR) |
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