Datasheet > ACPM-7381-TR1

ACPM-7381-TR1

更新时间： 2024-02-13 08:35:22

品牌	Logo	应用领域
安华高科 - AVAGO		放大器功率放大器
页数	文件大小	规格书
18页	1039K
描述
UMTS2100 4x4 Power Amplifier (1920-1980MHz)

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技术参数
数据手册

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ACPM-7381-TR1 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	包装说明：	SOLCC10,.16,32
Reach Compliance Code：	unknown	风险等级：	8.6
安装特点：	SURFACE MOUNT	功能数量：	1
端子数量：	10	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SOLCC10,.16,32	电源：	3.4 V
子类别：	RF/Microwave Amplifiers	最大压摆率：	560 mA
表面贴装：	YES

ACPM-7381-TR1 数据手册

CoolPAM

Mode control pins

Avago Technologies’ CoolPAM is stage-bypass PA tech- Vmode0 and Vmode1 are digitally controlled pins and

nology which saves more power compared with conven- they control operating mode of PA and truth table is sum-

tional PA. With this technology, the ACPM-7381 has very marized in table 3. These pins do not require constant

low quiescent current and eﬃciencies at low and medium voltage for interface, but high voltage input range is 1.9

output power ranges are very high.

though 2.9V

Incorporation of bias circuit

Application on mobile board

The ACPM-7381 has internal bias circuit, which removes Figure 16 shows one application example on mobile. C4

the need for external constant voltage source (LDO). PA and C5 should be placed nearby pin1 and pin10. Trans-

on/oﬀ is controlled by Ven. This is digitally control pin.

mission line length after PA output should be minimized

to reduce conduction loss.

3-mode power control with two mode control pins

V_BATT

The ACPM-7381 supports three power modes (low power

mode/mid power mode/high power mode) with two

mode control pins (Vmode0 and Vmode1). This control

scheme enables the ACPM-7381 to save more power,

which accordingly gives extended talk time.

PDF (probability density function) in Figure 15 showing

distribution of output power of mobile in real ﬁeld gives

motivation for stage-bypass PA. Output power is less

than 16dBm for most of operating time (during talking),

so it is important to save power consumption at low and

medium output power ranges

output matching circuit

RF In

Vcc1

Vcc2

GND

RF Out

TX filter

Vmode1 OUT

Vmode0 GND

Coupler

Ven

GND

ACPM-7381

PA_R1

PA_R0

PA_ON

Figure 16. Peripheral Circuits

Load Insensitivity

With the trend to remove the isolator from the Tx chain

in UMTS handsets, the performance demands of Load

Insensitivity become dependent on the combined per-

formance of the remaining elements in the TX chain: the

power ampliﬁer, coupler, antenna as well as the physical

layout on the phone board. The ACPM-7381, as part of

optimized design, meets the necessary linearity require-

ments over a 4:1 VSWR mismatch at the antenna plane.

In the case of the ACPM-7381, the output stage has been

designed for slightly higher Pout to provide the necessary

margin to meet linearity under the mismatch experienced

at the PA output port resulting from the forced antenna

mismatch. Documentation is available that provides a

more complete description of the system considerations

and measurement considerations.

Figure 15. PDF and Current

Average current & Talk time

Average current consumed by PA can be calculated by

summing up current at each output power weighted with

probability. So it is expressed with integration of multipli-

cation of current and probability at each output power.

Average current = ∫ (PDF x Current)dp

Talk time is extended more as average current consump-

tion is lowered

To illustrate the system performance using the ACPM-

7381, Figure 17 shows measurement of TX chain with

VSWR ﬁxed at 4:1. ACLR1 is kept higher than -38dBc over

all phases and gain variance is about 2dB.

1...6 7 8910 11 12...18

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与ACPM-7381-TR1相关器件

型号	品牌	描述	获取价格	数据表
ACPM-7382	AVAGO	Lead-free, RoHS compliant, Green	获取价格
ACPM-7382-BLK	AVAGO	1920MHz - 1980MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER, 4 X 4 MM, GREEN PACKAGE	获取价格
ACPM-7382-TR1	AVAGO	Lead-free, RoHS compliant, Green	获取价格
ACPM-7392	AVAGO	UTMS1700/2100(1710-1755MHz) and UMTS1700(1750-1785MHz)	获取价格
ACPM-7392-BLK	AVAGO	UTMS1700/2100(1710-1755MHz) and UMTS1700(1750-1785MHz)	获取价格
ACPM-7392-TR1	AVAGO	UTMS1700/2100(1710-1755MHz) and UMTS1700(1750-1785MHz)	获取价格

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