对数放大器和检测器

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放大器和比较器
对数放大器和检测器

Analog Devices, Inc.（简称ADI）为射频（RF）和中频（IF）应用提供多种对数放大器，它们能够测量高达100 dB的动态范围、DC ～2.7GHz频率范围的信号，并且具有±0.2 dB的精度。这些产品非常适合用于无线基础设施，进行接收信号强度指示（RSSI）和发射功率水平检测。此外，本系列产品还包括适合光功率测量、雷达和军事、低功耗幅移键控（ASK）解调和仪器仪表应用的对数放大器。

资源与相关信息

Design Tool: Use ADIsimPLL to select and design the best PLL for your application. (form)
Webinar On-Demand: Differential Circuit Design Techniques for Communication Applications (html)
Analog Dialogue: Ask The Applications Engineer - 28 Logarithmic Amplifiers-Explained (html)
Analog Dialogue: Accurate Gain/Phase Measurement at Radio Frequencies up to 2.5 GHz (html)
Circuit Note (CN-0050): Stable, Closed-Loop Automatic Power Control for RF (html)

Tech Article: Linear Power Control Of GSM Amplifier Power (pdf)
Tech Article: Make Precise Base-Station Power Measurements (pdf)

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Sort: Click on the arrows beneath the parameter on which you would like to sort, ascending and descending order.
Add/Remove Parameters: Click on the Add/Remove Parameters button. Select/deselect the checkbox of the parameter in the add/remove parameter pop up box. Click on "Update" for the table to redraw with new selection of parameters.
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Logarithmic Amplifiers

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Part# Results: 18		Product Description	RF Frequency (MHz)	Dynamic Range (dB)	Temp Stability (dB)	Response Time (ns typ)	Voltage Supply (V)	Supply Current	Package	Price* (1000-4999)
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	AD606	Limiter Output	-	80	-	400	4.5 to 5.5	13	16-Lead DIP, 16-Lead SOIC	$22.00
	AD640	Military Specified Part Available	-	50	±1	10	+/- 4.5 to +/- 7.5	44	20-Lead DIP, 20-Lead LCC, 20-Lead PLCC	$36.48
	AD641	Military Specified Part Available	-	44	±1	10	+/- 4.5 to +/- 7.5	44	20-Lead DIP, 20-Lead LCC, 20-Lead PLCC	$32.82
	AD8302	Dual-Channel Gain and Phase Outputs	2,700	60	±1	60	2.7 to 5.5	19	14-Lead TSSOP	$12.14
	AD8306	Military Specified Part Available	5 to 400	100	±1	73	2.7 to 5.5	16	16-Lead SOP	$14.67
	AD8307	High Dynamic Range	dc to 500	92	±1	400	2.7 to 5.5	8	8-Lead SOIC/DIP	$6.07
	AD8309	Limiter Output	5 to 500	100	±1	67	2.7 to 6.5	16	16-Lead TSSOP	$7.84
	AD8310	High Dynamic Range	dc to 440	100	±1	15	2.7 to 5.5	8	8-Lead SOIC	$4.00
	AD8311	Low Power for Battery Operation	100 to 2500	50	±0.5	150	2.7 to 5.5	8.5	WLCSP	$1.27
	AD8312	Low Power for Battery Operation	50 to 3500	45	±0.5	70	2.7 to 5.5	4.2	WLCSP	$1.27
	AD8313	Industry Standard	100 to 2500	70	±1.25	40	2.7 to 5.5	14	8-Lead uSOIC	$7.99
	AD8314	Industry Standard	100 to 2700	45	±1	70	2.7 to 5.5	4.5	8-Lead uSOIC/CSP	$1.10
	AD8315	Low Power for Battery Operation	100 to 2500	50	±1	150	2.7 to 5.5	8.5	8-Lead uSOIC	$4.00
	AD8317	Available in Die	1 to 10000	55	±0.5	6	3 to 5.5	22	8-Lead CSP	$3.98
	AD8318	Integrated Temp Sensor	1 to 8000	70	±0.5	10	4.5 to 5.5	68	16-Lead CSP	$5.05
	AD8319	Pin-compatible with AD8317	1 to 10000	45	±0.5	6	3 to 5.5	22	8-Lead CSP	$1.77
	ADL5513	125°C Operation, Broadband	1 to 4000	80	±0.5	20	2.7 to 5.5	31	16-Lead CSP	$5.56
	ADL5519	Dual-Channel AD8317	1 to 10000	62	±0.5	6	3.3 to 5.5	56	32-Lead LFCSP	$5.04

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Product Spotlight: ADL5513

The ADL5513 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device can be used in either measurement or controller modes. The ADL5513 maintains accurate log conformance for signals up to 4 GHz. The input dynamic range is typically 80 dB (referred to 50 Ω) with error less than ±3 dB and 74 dB with error less than ±1 dB. More ...

Product Spotlight: ADL5519

The ADL5519 is a dual-demodulating logarithmic amplifier that incorporates two AD8317s. It can accurately convert an RF input signal into a corresponding decibel-scaled output. The ADL5519 provides accurately scaled, independent, logarithmic output voltages for both RF measurement channels. The device has two additional output ports, OUTP and OUTN, that provide the measured differences between the OUTA and OUTB channels. The on-chip channel matching makes the log amp outputs insensitive to temperature and process variations. More ....

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