Datasheet > AFE20408

AFE20408

更新时间： 2024-09-19 17:15:31

品牌	Logo	应用领域
德州仪器 - TI		开关放大器控制器监视器功率放大器传感器
页数	文件大小	规格书
126页	4170K
描述
具有输出开关和电流传感器的八通道功率放大器监视器和控制器

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AFE20408 数据手册

AFE20408

SLASF96 – APRIL 2024

AFE20408 8-Channel Power-Amplifier Monitor and Controller

1 Features

2 Applications

•

Eight analog outputs

– Eight monotonic DACs: 1.22mV resolution

– Automatically configured output ranges:

•

Radar

Electronic warfare

Software defined radio

Seeker front end

•

Positive output voltage: 0V to 10V

Negative output voltage: –10V to 0V

3 Description

– High current drive capability

– High capacitive load tolerance

Output on and off control switches

– Fast switching time

– Low resistance

Multichannel ADC monitor

– Two high-voltage external inputs: 0V to 85V

– Two high-side current-sense amplifiers: up to

85V common mode range

– Local temperature sensor: ±2.5°C error

Output sequence control for start-up and shutdown

events

The AFE20408 is a highly integrated power-amplifier

(PA) monitor and control device capable of

temperature, current, and voltage supervision.

•

The AFE20408 bias controller is based around

eight digital-to-analog converters (DACs) with

programmable output ranges. The eight gate bias

outputs are switched on and off through dedicated

control pins. The gate bias switches are designed for

fast response and enable correct power sequencing

and protection of depletion-mode transistors, such as

GaAs and GaN.

•

Internal 2.5V reference

The AFE20408 supervisor is based around an

accurate multichannel analog-to-digital converter

(ADC). The device integrates two high-voltage

inputs, two high-side current-sense amplifiers and an

accurate on-chip temperature sensor.

SPI and I²C interface: 1.65V to 3.6V operation

– SPI: 4-wire interface

– I²C: 16 target addresses

•

Specified temperature range: –40°C to +125°C

Operating temperature range –55°C to +150°C

The function integration and wide operating

temperature range make the AFE20408 an excellent

choice as an all-in-one, bias control circuit for power

amplifiers. The flexible DAC output ranges and built-

in sequencing features let the device be used as

a biasing controller for a large variety of transistor

technologies, such as LDMOS, GaAs, and GaN.

AFE20408

Supply Monitors

Group A Channels

1 - 4

DACA0

OUTA0

DACA1

DACA2

OUTA2

DACA3

I²C / SPI

Serial

Gate

Bias

Switches

DAC

Interface

Device Information

PART NUMBER

PACKAGE⁽¹⁾

PACKAGE SIZE⁽²⁾

AFE20408

RHB (VQFN, 32)

5mm × 5mm

DACB0

OUTB0

DACB1

DACB2

OUTB2

DACB3

Group B Channels

1 - 4

Sequence

Control

and

Alarm

Detector

Gate

Bias

Switches

(1) For more information, see Section 11.

(2) The package size (length × width) is a nominal value and

includes pins, where applicable.

DAC

ADCHV0

ADCHV1

SENSE0+

SENSE0-

ADC

MUX

SENSE1+

SENSE1-

Reference

2.5 V

Temperature

Sensor

Simplified Schematic

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...126

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AFE20408RHBT	TI	获取价格	具有输出开关和电流传感器的八通道功率放大器监视器和控制器 \| RHB \| 32 \| -40
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AFE2124EG4	TI	获取价格	DATACOM, DIGITAL SLIC, PDSO48, PLASTIC, SSOP-48
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