TDA7708CBTR - AM/FM Radio Tuner IC | STMicroelectronics
料号： TDA7708CBTR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.68 | $46.80 |
| 100 | $4.16 | $416.00 |
| 500 | $3.74 | $1,870.00 |
| 1,000 | $3.32 | $3,320.00 |
TDA7708CBTR 概述
A radio tuner IC is a semiconductor device that receives radio frequency signals, selects the desired channel, and demodulates the audio or data content. It is a key component in car radios, portable radios, and other broadcast receivers. The TDA7708CBTR belongs to the family of integrated tuner ICs that combine RF, analog, and digital signal processing to deliver high-quality audio output.
Key features of the TDA7708CBTR include support for FM frequency range from 76 MHz to 108 MHz and AM frequency range from 150 kHz to 30 MHz, low power consumption, and I2C control interface for tuning and configuration. The device also includes advanced noise suppression and multipath detection algorithms, ensuring clear reception in challenging environments.
The TDA7708CBTR uses a low-IF architecture with digital signal processing, providing superior adjacent channel rejection and image rejection compared to traditional analog tuners. It integrates a phase-locked loop (PLL) for precise frequency synthesis and includes automatic gain control (AGC) to handle varying signal strengths. The device is housed in a compact VFQFPN-48 package, suitable for space-constrained automotive head units.
Typical applications include car radio systems, portable radios, and home audio receivers. The TDA7708CBTR is designed to meet automotive quality standards, making it suitable for harsh environments with wide temperature ranges.
When designing with the TDA7708CBTR, ensure proper PCB layout with adequate grounding and shielding to minimize interference. The I2C interface allows easy integration with microcontrollers for channel selection and volume control. The device requires a clean power supply and appropriate decoupling capacitors for optimal performance.
直接替换替代料： TDA7708CBTR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TDA7708C
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TDA7708CBTR 规格参数
| FM Frequency Range | 76 MHz to 108 MHz |
| AM Frequency Range | 150 kHz to 30 MHz |
| 电源电压 | 3.0 V to 3.6 V |
| 工作温度 | -40°C to +85°C |
| 封装 | VFQFPN-48 (7x7 mm) |
| 接口 | I2C |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount |
TDA7708CBTR 引脚配置
| 引脚 1 | RF_IN — RF input from antenna |
| 引脚 2 | GND — Ground |
| 引脚 3 | VCC — Power supply 3.3V |
| 引脚 4 | SDA — I2C data line |
| 引脚 5 | SCL — I2C clock line |
| 引脚 6 | AUDIO_OUT — Audio output |
| 引脚 7 | GND — Ground |
| 引脚 8 | VCC — Power supply 3.3V |
典型应用
TDA7708CBTR 适用于 6 应用s: Car Radio, Portable Radio, Home Audio Receiver, Emergency Radio, Internet Radio Adapter, Weather Radio.
Car Radio
The TDA7708CBTR is ideal for car radio systems due to its wide frequency range, low power consumption, and automotive-grade temperature range. It provides high sensitivity and selectivity for clear reception in moving vehicles. The I2C interface allows easy integration with car infotainment systems. Its compact VFQFPN-48 package saves space in head units. The device's advanced noise suppression ensures consistent audio quality even in areas with weak signals or multipath interference.
推荐
Portable Radio
The TDA7708CBTR is suitable for portable radios due to its low power consumption and small footprint. It operates from a 3.3V supply, making it compatible with battery-powered devices. The device's high sensitivity ensures good reception even with small antennas. Its I2C interface simplifies control from a microcontroller. The wide AM frequency range supports longwave and shortwave bands, enhancing its versatility for portable use.
推荐
Home Audio Receiver
The TDA7708CBTR can be used in home audio receivers to provide AM/FM tuning capabilities. Its high selectivity and image rejection ensure clean reception in urban environments with many radio stations. The device's low-IF architecture reduces external component count, simplifying design. The I2C interface allows integration with home automation systems. The compact package is suitable for slim audio components.
推荐
Emergency Radio
The TDA7708CBTR is well-suited for emergency radios that require reliable reception of AM/FM broadcasts during disasters. Its wide frequency range covers standard broadcast bands, and its low power consumption extends battery life. The device's robust design operates over a wide temperature range, making it suitable for outdoor use. The I2C interface allows for simple control in battery-powered devices.
推荐
Internet Radio Adapter
The TDA7708CBTR can be used in internet radio adapters to provide traditional AM/FM reception alongside streaming services. Its compact size and low power consumption make it ideal for integration into small devices. The I2C interface allows a host processor to control tuning and audio output. The device's high sensitivity ensures good reception in various locations.
推荐
Weather Radio
The TDA7708CBTR supports AM and FM bands, which can be used for weather radio reception in regions where weather alerts are broadcast on these frequencies. Its high sensitivity ensures reliable reception of emergency alerts. The device's low power consumption is beneficial for battery-operated weather radios. The I2C interface allows for easy integration with alert systems.
推荐
推荐产品汇总
工程参考数据： TDA7708CBTR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TDA7708C | TDA7707 | Si4754-A10 |
|---|---|---|---|---|
| Package | VFQFPN-48 | VFQFPN-48 | VFQFPN-64 | QFN-32 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Silicon Labs |
| FM Frequency Range | 76-108 MHz | 76-108 MHz | 76-108 MHz | 76-108 MHz |
| AM Frequency Range | 150 kHz-30 MHz | 150 kHz-30 MHz | 150 kHz-30 MHz | 520-1710 kHz |
| Supply Voltage | 3.0-3.6V | 3.0-3.6V | 3.0-3.6V | 2.7-3.6V |
| Interface | I2C | I2C | I2C | I2C |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| RoHS | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Wide AM frequency range up to 30 MHz （对比 Si4754-A10)
- Automotive-grade temperature range （对比 Si4754-A10)
- Same-brand drop-in alternative available （对比 TDA7707)
设计说明
Ensure proper grounding and shielding for the RF input to minimize interference. Use a ground plane under the IC and keep the RF input trace short and direct. Place decoupling capacitors close to the VCC pins to filter noise.
The TDA7708CBTR requires a clean 3.3V supply. Use a low-dropout regulator (LDO) with low output noise to power the device. Add a 10uF and 0.1uF capacitor on the VCC pin to decouple high-frequency noise.
Avoid routing digital I2C lines near the RF input to prevent coupling. Use proper ESD protection on the antenna input. Ensure the I2C pull-up resistors are correctly sized for the bus speed.
合规信息
RoHS compliant per STMicroelectronics. AEC-Q100 qualification not specified in available data.
