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| 型号： | CS4461-CZZ |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 10/11页 |
| 文件大小： | 0K |
| 描述： | IC ADC PSR FEEDBACK 24-TSSOP |
| 标准包装： | 62 |
| 采样率（每秒）： | 7.5M |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 235mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -10°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，单极 |
| 产品目录页面： | 758 (CN2011-ZH PDF) |
| 其它名称： | 598-1069-5 |
8
DS650F1
CS4461
4. APPLICATIONS
4.1
Digital Connections
PSR_MCLK provides the system clock for the CS4461. PSR_SYNC and PSR_DATA provide the output of
the modulator to the class-D modulator with feedback capabilities. Series damping resistors should be used
on PSR_MCLK, PSR_SYNC, and PSR_DATA to minimize noise. These should be placed as close as pos-
sible to their signal source. The pin labeled TEST should also be pulled low to GND through a 47 k
resistor
to minimize noise coupling into the ADC modulator.
4.2
Analog Connections
The analog modulator samples the input at PSR_MCLK/4 (6.144 MHz with PSR_MCLK=24.576 MHz).
Figure 2 shows the suggested analog input filter. This filter topology will correctly buffer the power supply’s
AC and DC components for PSR processing by the class-D modulator. The use of capacitors which have a
large voltage coefficient (such as general purpose ceramics) must be avoided since these can degrade sig-
nal linearity. C0G dielectrics should be used wherever possible. R1 and R2 should be used to scale VP
(class-D amplifier high voltage power supply) to less than the CS4461 maximum AIN+/AIN- input voltage
(3.9 V).
The following equation can be used to scale R1 and R2:
2 * (VP * (1 + %VP_Ripple)) * (R2 / (R1 + R2)) < 3.9 V
Example (VP = 40 V, %VP_Ripple = 4%):
2 * (40 * (1 + 0.04)) * (1.96 k
/ (40.2 k + 1.96 k) = 3.87 V
CS4461
AIN+
AIN-
2200 pF
C0G
-
+
90.9
120 pF
2 k
2 k
+5.0 V
649
90.9
+
-
+5.0 V
120 pF
649
VP
R1
R2
Figure 2. CS4461 Recommended Analog Input Buffer
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS4461-CZZR | 功能描述:音频模/数转换器 IC IC Mlt-Bit ADC ClssD w/Rltm PSR Fdbck RoHS:否 制造商:Wolfson Microelectronics 转换速率: 分辨率: ADC 输入端数量: 工作电源电压: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: 封装: |
| CS4461-DZZ | 制造商:Cirrus Logic 功能描述:ADC SGL DELTA-SIGMA 7.5MSPS SERL 24TSSOP - Rail/Tube |
| CS4461-DZZR | 制造商:Cirrus Logic 功能描述:ADC SGL DELTA-SIGMA 7.5MSPS SERL 24SSOP - Tape and Reel |
| CS4468A3 | 制造商:HVPSI 制造商全称:High Voltage Power Solutions, Inc. 功能描述:180 KV RECTIFIER |
| CS4473-000 | 制造商:TE Connectivity 功能描述:MTC100-JA2-P11M2-CS082 - Bulk |
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