The AD606 is a complete, monolithic logarithmic amplifier using a 9-stage "successive-detection" technique. It provides both logarithmic and limited outputs. The logarithmic output is from a three-pole post-demodulation low-pass filter and provides a loadable output voltage of +0.1 V dc to +4 V dc. The logarithmic scaling is such that the output is +0.5 V for a sinusoidal input of -75 dBm and +3.5 V at an input of +5 dBm; over this range the logarithmic linearity is typically within ±0.4 dB. All scaling parameters are proportional to the supply voltage.

The AD606 can operate above and below these limits, with reduced linearity, to provide as much as 90 dB of conversion range. A second low-pass filter automatically nulls the input off-set of the first stage down to the submicrovolt level. Adding external capacitors to both filters allows operation at input frequencies as low as a few hertz.

The AD606's limiter output provides a hard-limited signal output as a differential current of ±1.2 mA from open-collector outputs. In a typical application, both of these outputs are loaded by 200 (Ohm) resistors to provide a voltage gain of more than 90 dB from the input. Transition times are 1.5 ns, and the phase is stable to within ±3° at 10.7 MHz for signals from -75 dBm to +5 dBm.

The logarithmic amplifier operates from a single +5 V supply and typically consumes 65 mW. It is enabled by a CMOS logic level voltage input, with a response time of <5 µs. When disabled, the standby power is reduced to <1 mW within 5 µs.

The AD606J is specified for the commercial temperature range of 0°C to +70°C and is available in 16-pin plastic DIPs or SOICs. Consult the factory for other packages and temperature ranges.

An evaluation board is available for this product and may be ordered using the following product number: AD606-EB.

Part#	Product Description	RF Frequency (MHz)	Dynamic Range (dB)	Temp Stability (dB)	Response Time (ns typ)	Voltage Supply (V)	Supply Current (max)	Package	Price* (1000-4999)
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 5.5	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	20	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	10	2.7 to 5.5	-	16-Lead CSP	-
ADL5519	Dual-Channel AD8317	1 kHz to 10000	62	±0.5	6	3 to 5.5	56	32-Lead LFCSP	$5.04

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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产品状态指该产品当前的生存周期。它指下面四个阶段之一：

• 预发布：该产品型号尚未投入正式生产，但是可以提供样片。
• 生产：该产品型号目前已在生产，可以购买和索取样片。
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• 停产：该型号产品已经停产，不再提供。本表格中列出的其它型号产品仍可以供货（如果这些型号不处于停产状态）。

这种集成电路（IC）的封装说明，例如：DIP，SOIC和BGA封装。评估板是一块用来演示器件性能的试验板，该器件也包含在该评估板上。

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这是指该器件允许的工作温度范围。以下为所规定的三种温度范围：

• 民用温度范围：0 ºC～＋70 ºC
• 军用温度范围：－55ºC ～＋125ºC
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• 汽车工作温度范围：-40 ℃～ +125 ℃

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