Datasheet > AD8312

AD8312

更新时间： 2024-02-19 18:37:26

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
13页	577K
描述
100 MHz-2.7 GHz, 45 dB RF Log Detector

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AD8312 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	BGA
包装说明：	VFBGA,	针数：	6
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.66	JESD-30 代码：	R-XBGA-B6
JESD-609代码：	e1	长度：	1.45 mm
功能数量：	1	端子数量：	6
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：	VFBGA
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	0.675 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 SILVER COPPER
端子形式：	BALL	端子节距：	0.5 mm
端子位置：	BOTTOM	处于峰值回流温度下的最长时间：	40
宽度：	0.95 mm	Base Number Matches：	1

AD8312 数据手册

100 MHz−2.7 GHz, 45 dB

RF Log Detector

Preliminary Technical Data

AD8312

Its high sensitivity allows measurement at low power levels, thus

reducing the amount of power that needs to be coupled to the

detector. It is essentially a voltage-responding device, with a

typical signal range of 1.25 mV to 224 mV rms or −45 dBm to 0

dBm re 50 Ω.

FEATURES

Complete RF Detector Function

Typical Range : −45 dBm to 0 dBm re 50 Ω

Frequency Response from 100 MHz to 2.7 GHz

Temperature-Stable Linear-in-dB Response

Accurate to 2.7 GHz

Rapid Response: 70 ns to a 10 dB Step

Low Power: 12 mW at 2.7 V

For convenience, the signal is internally ac-coupled, using a 5

pF capacitor to a load of 3 kΩ in shunt with 2 pF. This high-

pass coupling, with a corner at approximately 16 MHz,

determines the lowest operating frequency. Thus, the source

may be dc-grounded.

APPLICATIONS

Cellular Handsets (GSM, CDMA, WCDMA)

RSSI and TSSI for Wireless Terminal Devices

Transmitter Power Measurement

The AD8312 output, called VOUT, increases from close to

ground to about 1.2 V as the input signal level increases from

1.25 mV to 224 mV. This output is intended for use in

measurement mode. Consult the Applications section of this

data sheet for information on use in this mode. A capacitor may

be connected between the VOUT and CFLT pins when it is

desirable to increase the time interval over which averaging of

the input waveform occurs.

PRODUCT DESCRIPTION

The AD8312 is a complete low cost subsystem for the

measurement of RF signals in the frequency range of 100 MHz

to 2.7 GHz, with a typical dynamic range of 45 dB, intended for

use in a wide variety of cellular handsets and other wireless

devices. It provides a wider dynamic range and better accuracy

than possible using discrete diode detectors. In particular, its

temperature stability is excellent over the full operating range of

−40°C to +85°C.

The AD8312 is available in a 6-lead wafer-level chip scale

package, 1.0 mm x 1.5 mm, and consumes 4.5 mA from a 2.7 V

to 5.5 V supply.

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

PrA

10/29/2004

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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