Datasheet > AD8314ACPZ-REEL7

AD8314ACPZ-REEL7

更新时间： 2024-02-06 13:18:34

品牌	Logo	应用领域
亚德诺 - ADI		电信电信集成电路
页数	文件大小	规格书
20页	393K
描述
IC SPECIALTY TELECOM CIRCUIT, DSO8, 2 X 3 MM, LFCSP-8, Telecom IC:Other

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AD8314ACPZ-REEL7 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SON	包装说明：	2 X 3 MM, LFCSP-8
针数：	8	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.05	JESD-30 代码：	R-XDSO-N8
JESD-609代码：	e0	长度：	3 mm
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：	VSON
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, VERY THIN PROFILE
峰值回流温度（摄氏度）：	220	认证状态：	Not Qualified
座面最大高度：	1 mm	标称供电电压：	3 V
表面贴装：	YES	电信集成电路类型：	TELECOM CIRCUIT
温度等级：	INDUSTRIAL	端子面层：	TIN LEAD
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	2 mm	Base Number Matches：	1

AD8314ACPZ-REEL7 数据手册

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AD8314

Figure 37 shows a third method for coupling the input signal

into the AD8314, applicable in applications where the input

signal is larger than the input range of the log amp. A series

resistor, connected to the RF source, combines with the input

impedance of the AD8314 to resistively divide the input signal

being applied to the input. This has the advantage of very little

power being tapped off in RF power transmission applications.

EFFECT OF WAVEFORM TYPE ON INTERCEPT

Although specified for input levels in dBm (dB relative to

1 mW), the AD8314 fundamentally responds to voltage and not

to power. A direct consequence of this characteristic is that

input signals of equal rms power but differing crest factors

produces different results at the log amp’s output.

The effect of differing signal waveforms is to shift the effective

value of the intercept upwards or downwards. Graphically, this

looks like a vertical shift in the log amp’s transfer function. The

logarithmic slope, however, is not affected. For example,

consider the case of the AD8314 being alternately fed by an

unmodulated sine wave and by a single CDMA channel of the

same rms power. The AD8314’s output voltage differs by the

equivalent of 3.55 dB (70 mV) over the complete dynamic range

of the device (the output for a CDMA input being lower).

Table 5. X1 and X2 Recommended Components in Figure 36

Frequency (GHz)

Voltage Gain (dB)

0.1

Short

52.3 Ω

0.9

1.9

2.5

33 nH

10 nH

1.5 pF

39 nH

15 nH

3.9 nH

11.8

7.8

2.55

INCREASING THE LOGARITHMIC SLOPE IN

MEASUREMENT MODE

The nominal logarithmic slope of 21.5 mV/dB (see Figure 10

for the variation of slope with frequency) can be increased to an

arbitrarily high value by attenuating the signal between V_UP

and VSET, as shown in Figure 38. The ratio R1/R2 is set by

Table 6 shows the correction factors that should be applied to

measure the rms signal strength of various signal types. A sine

wave input is used as a reference. To measure the rms power of

a square wave, for example, the mV equivalent of the dB value

given in the table (20 mV/dB times 3.01 dB) should be

subtracted from the output voltage of the AD8314.

⎛

⎜

⎝

⎞

⎟

⎠

New Slope

Original Slope

R1/R2 =

−1

Table 6. Shift in AD8314 Output for Signals with Differing

Crest Factors

In the example shown, two 5 kΩ resistors combine to change

the slope at 1900 MHz from 20 mV/dB to 40 mV/dB. The slope

can be increased to higher levels. This, however, reduces the

usable dynamic range of the device.

Correction

Factor (Add

to Measured

Signal Type

Input Level)

Sine Wave

Square Wave

0 dB

−3.01 dB

+0.55 dB

40mV/dB

V_UP

@ 1900MHz

5kΩ

GSM Channel (All Time Slots On)

CDMA Channel (Forward Link, 9 Channels On) +3.55 dB

CDMA Channel (Reverse Link)

PDC Channel (All Time Slots On)

VSET

5kΩ

AD8314

+0.5 dB

+0.58 dB

Figure 38. Increasing the Output Slope

Rev. B | Page 15 of 20

1...12 13 141516 17 18...20

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STM32F103C8T6 替代型号

型号	品牌	替代类型	描述	数据表

与AD8314ACPZ-REEL7相关器件

型号	品牌	描述	获取价格	数据表
AD8314ACPZ-RL7	ADI	100 MHz to 2.7 GHz, 45 dB RF Detector/Controller	获取价格
AD8314ARM	ADI	100 MHz-2500 MHz 45 dB RF Detector/Controller	获取价格
AD8314ARM-REEL	ADI	100 MHz-2500 MHz 45 dB RF Detector/Controller	获取价格
AD8314ARM-REEL7	ADI	100 MHz-2500 MHz 45 dB RF Detector/Controller	获取价格
AD8314ARMZ	ADI	100 MHz to 2.7 GHz, 45 dB RF Detector/Controller	获取价格
AD8314ARMZ-REEL	ADI	100 MHz to 2.7 GHz, 45 dB RF Detector/Controller	获取价格

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