参数资料
| 型号： | CS4340-CZZ |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 11/25页 |
| 文件大小： | 0K |
| 描述： | IC DAC 24BIT 96KHZ 101DB 16TSSOP |
| 标准包装： | 96 |
| 位数： | 24 |
| 数据接口： | 串行 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 90mW |
| 工作温度： | -10°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电压，单极 |
| 采样率（每秒）： | 96k |
| 配用： | CDB4340A-ND - EVALUATION BOARD FOR CS4340A |
| 其它名称： | 598-1049-5 |
CS4340
DS297F3
19
4.5
Power-up Sequence
Reliable power-up can be accomplished by keeping the device in reset until the power supply and configuration pins
are stable, and the clocks are locked to the appropriate frequencies discussed in section 4.2. It is also recommended
that reset be enabled if the analog supply drops below the minimum specified operating voltage to prevent power
glitch related issues.
4.6
Popguard Transient Control
The CS4340 uses Popguard technology to minimize the effects of output transients during power-up and power-
down. This technology, when used with external DC-blocking capacitors in series with the audio outputs, minimizes
the audio transients commonly produced by single-ended single-supply converters. It is activated inside the DAC
when RST is enabled/disabled and requires no other external control, aside from choosing the appropriate DC-
blocking capacitors.
4.6.1 Power-up
When the device is initially powered-up, the audio outputs, AOUTL and AOUTR, are clamped to AGND. Fol-
lowing a delay of approximately 1000 sample periods, each output begins to ramp toward the quiescent volt-
age. Approximately 10,000 LRCK cycles later, the outputs reach VQ and audio output begins. This gradual
voltage ramping allows time for the external DC-blocking capacitors to charge to the quiescent voltage, min-
imizing the power-up transient.
4.6.2 Power-down
To prevent transients at power-down, the device must first enter its power-down state by enabling RST. When
this occurs, audio output ceases and the internal output buffers are disconnected from AOUTL and AOUTR.
In their place, a soft-start current sink is substituted which allows the DC-blocking capacitors to slowly dis-
charge. Once this charge is dissipated, the power to the device may be turned off and the system is ready for
the next power-on.
4.6.3 Discharge Time
To prevent an audio transient at the next power-on, it is necessary to ensure that the DC-blocking capacitors
have fully discharged before turning on the power or exiting the power-down state. If not, a transient will occur
when the audio outputs are initially clamped to AGND. The time that the device must remain in the power-
down state is related to the value of the DC-blocking capacitance. For example, with a 3.3 F capacitor, the
minimum power-down time will be approximately 0.4 seconds.
相关PDF资料 |
PDF描述 |
|---|---|
| CS4341-CZZ | IC DAC STER 24BIT 96KHZ 16TSSOP |
| CS4341A-KSZ | IC DAC STER 24BIT 192KHZ 16SOIC |
| CS4351-DZZ | IC DAC STER 112DB 192KHZ 20TSSOP |
| CS4352-DZZ | IC DAC STER 102DB 192KHZ 20TSSOP |
| CS4354-CSZ | IC DAC 24BIT SRL 14SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS4340-CZZR | 功能描述:数模转换器- DAC IC 24Bit 96kHz 101dB Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| CS4340-DS | 制造商:Cirrus Logic 功能描述:DAC 2CH DELTA-SIGMA 24BIT 16SOIC - Rail/Tube |
| CS4340-DSZ | 功能描述:数模转换器- DAC IC 24Bit 96kHz 101dB Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| CS4340-DSZR | 功能描述:数模转换器- DAC IC 24Bit 96kHz 101dB Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| CS4340-KS | 功能描述:数模转换器- DAC IC 24Bit 96kHz 101dB Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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