AFE8220-Q1
- Qualified for Automotive Applications
- Two Intermediate Frequency (IF)
Analog-to-Digital Converters (ADCs) - Two 12-Bit Auxiliary Digital-to-Analog
Converters (DACs) - Integrated IF Digital Processing Core
- Integrated Circuitry for Third-Overtone
Master Clock Oscillator - Wakeup Circuit/Real-Time Clock With Separate
Crystal Oscillator - Flexible Data Interface Optimized for TMS
Family of Digital Baseband Processors - Pin-Selectable SPI™ and I2C™ Control
Interfaces - 3.3-V/1.8-V Supply (Integrated Regulator
Available to Optionally Generate 1.8-V Supply) - TQFP-100 PowerPAD™ Package
- APPLICATIONS
- IF-Sampled AM/FM Radio
- Hybrid Digital (HD) Digital Audio Broadcasting
(DAB) Digital Radio
PowerPAD is a trademark of Texas Instruments.
SPI is a trademark of Motorola, Inc.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
The AFE8220 implements the intermediate frequency (IF) sampling and processing functions of a digital radio receiver system. It is designed to be used with TIs digital radio baseband processors and AM/FM tuners. The AFE8220 can also be programmed by the baseband processor for use in conventional AM/FM and digital radio. This unit includes two IF inputs with associated filtering and digital processing circuitry.
The receive circuit oversamples the radio tuner IF output to reduce noise and improve dynamic range. The IF analog-to-digital converter (ADC) oversamples the IF input at rates up to 75 MHz. The AFE8220 then digitally mixes, filters, and decimates the signal to provide in-phase (I) and quadrature (Q) output signals to the baseband processor. A clock oscillator circuit is provided that can be used with an appropriate third-overtone crystal and external tank circuit to generate the sampling clock for the IF ADCs.
The AFE8220 also includes a real-time clock and associated low-power oscillator circuit. Two auxiliary digital-to-analog converters (DACs) are included for system control functions. Other features include eight general-purpose input/output (GPIO) lines and programmable interrupt generators.
The AFE8220 is available in a TQFP-100 (14 mm × 14 mm) package and uses a 3.3-V and a 1.8-V power supply. An onboard voltage regulator is included to optionally generate the 1.8-V digital supply for the AFE8220.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Dual Intermediate Frequency (IF) Analog Front End For Digital Radio 数据表 (Rev. A) | 2009年 7月 31日 |
设计和开发
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封装 | 引脚 | 下载 |
---|---|---|
HTQFP (PZP) | 100 | 查看选项 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点