AD8317-EVALZ

更新时间： 2024-02-14 06:24:23

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
20页	782K
描述
1 MHz to 10 GHz, 55 dB Log Detector/Controller

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中文翻译

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技术参数
数据手册

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AD8317-EVALZ 技术参数

Source Url Status Check Date：	2013-05-01 14:56:25.48	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	DIE	包装说明：	DIE,
针数：	0	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.73	Is Samacsys：	N
模拟集成电路 - 其他类型：	LOG OR ANTILOG AMPLIFIER	标称带宽：	10000 MHz
JESD-30 代码：	R-XUUC-N8	湿度敏感等级：	1
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	RECTANGULAR	封装形式：	UNCASED CHIP
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	BIPOLAR	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子位置：	UPPER
处于峰值回流温度下的最长时间：	30	Base Number Matches：	1

AD8317-EVALZ 数据手册

AD8317

THEORY OF OPERATION

The AD8317 is a 6-stage demodulating logarithmic amplifier,

specifically designed for use in RF measurement and power

control applications at frequencies up to 10 GHz. A block

diagram is shown in Figure 21. Sharing much of its design

with the AD8318 logarithmic detector/controller, the AD8317

maintains tight intercept variability vs. temperature over a 50 dB

range. Additional enhancements over the AD8318, such as a

reduced RF burst response time of 6 ns to 10 ns, 22 mA supply

current, and board space requirements of only 2 mm × 3 mm,

add to the low cost and high performance benefits of the AD8317.

compensate for errors due to internal noise. The common pin,

COMM, provides a quality low impedance connection to the

printed circuit board (PCB) ground. The package paddle, which

is internally connected to the COMM pin, should also be grounded

to the PCB to reduce thermal impedance from the die to the PCB.

The logarithmic function is approximated in a piecewise fashion

by six cascaded gain stages. (For a more comprehensive expla-

nation of the logarithm approximation, see the AD8307 data

sheet.) The cells have a nominal voltage gain of 9 dB each and a

3 dB bandwidth of 10.5 GHz. Using precision biasing, the gain

is stabilized over temperature and supply variations. The overall

dc gain is high, due to the cascaded nature of the gain stages. An

offset compensation loop is included to correct for offsets

within the cascaded cells. At the output of each of the gain

stages, a square-law detector cell is used to rectify the signal.

VPOS

TADJ

GAIN

BIAS

SLOPE

VSET

VOUT

CLPF

DET

The RF signal voltages are converted to a fluctuating differential

current having an average value that increases with signal level.

Along with the six gain stages and detector cells, an additional

detector is included at the input of the AD8317, providing a

50 dB dynamic range in total. After the detector currents are

summed and filtered, the following function is formed at the

summing node:

INHI

INLO

COMM

Figure 21. Block Diagram

A fully differential design, using a proprietary, high speed SiGe

process, extends high frequency performance. Input INHI receives

the signal with a low frequency impedance of nominally 500 ꢀ

in parallel with 0.7 pF. The maximum input with 1 dB log-

conformance error is typically 0 dBm (re: 50 ꢀ). The noise

spectral density referred to the input is 1.15 nV/√Hz, which is

equivalent to a voltage of 118 μV rms in a 10.5 GHz bandwidth

or a noise power of −66 dBm (re: 50 ꢀ). This noise spectral

density sets the lower limit of the dynamic range. However,

the low end accuracy of the AD8317 is enhanced by specially

shaping the demodulating transfer characteristic to partially

I_D× log₁₀(V_IN/V_INTERCEPT

where:

I_Dis the internally set detector current.

)

(1)

_INis the input signal voltage.

_INTERCEPTis the intercept voltage (that is, when V_IN= V_INTERCEPT

the output voltage would be 0 V, if it were capable of going to 0 V).

Rev. B | Page 10 of 20

1...7 8 91011 12 13...20

中文翻译

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与AD8317-EVALZ相关器件

型号	品牌	获取价格	描述	数据表
AD8318	ADI	获取价格	1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller
AD8318_06	ADI	获取价格	1 MHz to 8 GHz, 60 dB Logarithmic Detector/Controller
AD8318_07	ADI	获取价格	1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
AD8318ACPZ	ADI	获取价格	暂无描述
AD8318ACPZ-R2	ADI	获取价格	1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
AD8318ACPZ-REEL7	ADI	获取价格	1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller
AD8318ACPZ-WP	ADI	获取价格	1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller
AD8318-EVAL	ADI	获取价格	1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller
AD8318-EVALZ	ADI	获取价格	1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
AD8319	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller

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