Datasheet > BGU8821A

BGU8821A

更新时间： 2022-06-24 15:43:02

品牌	Logo	应用领域
恩智浦 - NXP		光电二极管
页数	文件大小	规格书
41页	566K
描述
Dual channel low-noise high linearity amplifier with DSA and SPDT

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BGU8821A 数据手册

NXP Semiconductors

BGU8821/A

Dual channel low-noise high linearity amplifier with DSA and SPDT

8.1.2 Direct DSA Attenuation mode

In Direct DSA Attenuation mode, Main and Diversity DSAs can be toggled independently

without accessing SPI bus.

Pin 9 <DSA_0_X_dB Main> can be toggled to set DSA_M between Minimum Attenuation

(level LOW) and predefined X dB attenuation (level HIGH). X dB attenuation is defined in

DSA_M_TDD_ATTN (register 0x16h, bits [6-2]). Default reset value is 15 dB.

Table 6.ꢀDirect DSA Attenuation mode for Main channel truth table

Legend: * reset value

Pin 9

DIRECT_DSA_M

DSA_M Attenuation

Description

DSA_0_X dB Main

Min attenuation I_L

I_Lx X dB Attenuation

X dB is set in register 0x16h,

default value is 15 dB

SPI setting

DSA_M controlled by SPI

using register 0x11h, default

value is Min attenuation, I_L

Pin 23 <GPO/DSA_0_X_dB Diversity> can be toggled to set DSA_M between Minimum

Attenuation (level LOW) and predefined X dB attenuation (level HIGH). X dB attenuation

is defined in DSA_D_TDD_ATTN (register 0x17h, bits [6-2]). Default reset value is 15 dB.

Table 7.ꢀDirect DSA Attenuation mode for Diversity channel truth table

Legend: * reset value

Pin 23

DIRECT_DSA_D

DSA_D Attenuation

Description

DSA_0_X dB Diversity

Min attenuation I_L

I_Lx X dB Attenuation

X dB is set in register 0x17h,

default value is 15 dB

GPO functionality

SPI setting

DSA_D controlled by SPI

using register 0x12h, default

value is Min attenuation, I_L

By default, the BGU8821/A starts up in Direct DSA Attenuation mode. This mode can be

switched off via register 0x13h, bits [1] (for the Main channel) and [2] (for the Diversity

channel). While Direct DSA Attenuation mode for Diversity channel is active, GPO

functionality is not available.

When DIRECT_DSA_D (register 0x13h bit [2]) is set HIGH, Direct DSA Attenuation mode

for Diversity channel is switched off and Pin 23 is used as <GPO> pin.

8.2 Serial Peripheral interface (SPI) Bus

The Serial Peripheral Interface (SPI) bus allows simple interfacing with many industry

microprocessors; it provides access to all the registers that define the operation of the

BGU8821/A.

BGU8821/A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6 — 15 April 2020

7 / 41

1...4 5 678 9 10...41

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与BGU8821A相关器件

型号	品牌	获取价格	描述	数据表
BGU8822	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8822/A	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8822/AY	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8822A	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8823	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8823/A	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8823/AY	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8823A	NXP	获取价格	Dual channel low-noise high linearity amplifier with DSA and SPDT
BGU8H1	NXP	获取价格	SiGe:C Low Noise Amplifier MMIC for LTE
BGU8L1	NXP	获取价格	SiGe:C Low Noise Amplifier MMIC for LTE

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