产品描述:
TLV320AIC10使用过采样Sigma-Delta技术提供从数字到模拟(D/A)和从模拟到数字(A/D)的高分辨率信号转换。它允许2对1多路复用器输入,内置抗混叠滤波器和放大器,用于通用应用,如电话混合接口、驻极体麦克风前置放大器等。IN和AUX输入均可接受正常模拟信号。该器件由一对16位同步串行转换路径(每个方向一个)组成,在DAC之前包括一个内插滤波器,在ADC之后包括一个抽取滤波器。可以绕过FIR滤波器,以提供灵活性和节能。片上提供的其他开销功能包括定时(可编程采样速率、连续数据传输和FIR旁路)和控制(可编程增益放大器、通信协议等)。Sigma-Delta架构以较低的系统成本产生高分辨率的模数和数模转换。
TLV320AIC10设计增强了与DSP的通信。连续数据传输模式完全支持TI和S的数字信号处理器自动缓冲(ABU),以降低数字信号处理器中断服务开销。自动级联检测(ACD)使级联编程变得简单,支持一个主机和最多七个从机的级联操作。主机接口的直接配置模式使用单线串口直接对内部寄存器进行编程,不受数据转换串口的干扰,也不需要重置整个设备。事件监视模式允许DSP监视外部事件,如电话摘机振铃检测。
在低功耗模式下,TLV320AIC10以8 kSPS的采样速率转换数据,功耗仅为39 mW。
该器件的可编程功能通过一个串口进行配置,该串口可以无缝地连接到任何接受4线串口通信的DSP,如TMS320Cxx。这些选项包括软件重置、设备断电、ADC和DAC关断的单独控制、通信协议、信号采样率、增益控制和系统测试模式,如附录A所述。TLV320AIC10特别适合于免提车载套件、VOIP、电缆调制解调器、语音和电话领域的各种应用,包括低比特率、高质量压缩、语音增强、识别和合成。其低群延时特性使其适用于单通道或多通道主动控制应用。
TLV320AIC10的商用范围为0°C至70°C,工业范围为40°C至85°C。
产品特性:
- C54xx software driver available
- 16-bit oversampling sigma-delta A/D converter
- 16-bit oversampling sigma-delta D/A converter
- Maximum output conversion rate:
- 22 ksps with on-chip FIR filter
- 88 ksps with FIR bypassed
- Voiceband bandwidth in FIR-bypassed mode and final sampling rate at 8 ksps
- 90-dB SNR/ADC and 87-dB SNR/DAC with DSPs FIR (FIR bypassed at 88 ksps/5 V)
- 87-dB SNR/ADC and 85-dB SNR/DAC with DSPs FIR (FIR bypassed at 88 ksps/3.3 V)
- On-chip FIR produced 84-dB SNR for ADC and 85-dB SNR for DAC over 11-kHz BW
- Built-in functions including PGA, antialiasing analog filter, and operational amplifiers for general-purpose interface (such as MIC interface and hybrid interface)
- Glueless serial port interface to DSPs (TI TMS320Cxx, SPI, or standard DSPs)
- Automatic cascading detection (ACD) makes cascade programming simple and allows up to 8 devices to be connected in cascade.
- On-fly reconfiguration modes include secondary-communication mode and direct-configuration mode (host interface).
- Continuous data-transfer mode for use with autobuffering (ABU) to reduce DSP interrupt service overhead
- Event-monitor mode provides external-event control, such as RING/OFF-HOOK detection
- Programmable ADC and DAC conversion rate
- Programmable input and output gain control
- Separate software control for ADC and DAC power-down
- Analog (3-V to 5.5-V) supply operation
- Digital (3-V to 5.5-V) supply operation
- Power dissipation (PD) of 39 mWrms typical for 8-ksps at 3.3 V
- Hardware power-down mode to 0.5 mW
- Internal and external reference voltage (Vref)
- Differential and single-ended analog input/output
- 2s-complement data format
- Test mode, which includes digital loopback and analog loopback
- 600-ohm output driver
ADC通道数量1
数字模拟转换器(DAC)通道数量1
DigitalaudiointerfaceDSP
模拟inputs2
Samplingrate(Max)(kHz)22.05
等级产品样本
ADCSNR(规格)(dB)87
DACSNR(规格)(dB)90