- 您现在的位置：买卖IC网 > PDF目录380066 > CS4218-KL (CRYSTAL SEMICONDUCTOR CORP) 16-Bit Stereo Audio Codec PDF资料下载
参数资料
| 型号： | CS4218-KL |
| 厂商： | CRYSTAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | 16-Bit Stereo Audio Codec |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 12/44页 |
| 文件大小： | 586K |
| 代理商： | CS4218-KL |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页
OVERVIEW
The CS4218 contains two analog-to-digital con-
verters, two digital-to-analog converters,
adjustable input gain, and adjustable output level
control. Since the converters contain all the re-
quired filters in digital or sampled analog form,
the filters’ frequency responses track the sample
rate of the CS4218. Only a single-pole RC filter
is required for the analog inputs and outputs.
Communication with the CS4218 is via a serial
port, with separate pins for data input and out-
put. The filters and converters operate over a
sample rate range of 4 kHz to 50 kHz.
FUNCTIONAL DESCRIPTION
Analog Inputs and Outputs
Figure 8 illustrates the suggested connection dia-
gram for the CS4218. The line level inputs,
LIN1 or LIN2 and RIN1 or RIN2, are selected
by an internal input multiplexer. This multiplexer
is a source selector and is not designed for real-
time switching between inputs at the sample rate.
When using the CS4218 as a drop-in replace-
ment for the CS4216, existing recommended
circuits (shown in the CS4216 data sheet) may
be used as is without any noticeable degradation
in performance. Performance may vary with
user-specific input circuits and should be
checked when contemplating the use of CS4218
in existing CS4216 designs.
Unused analog inputs that are not selected have
a very high input impedance, so they may be
tied to AGND directly. Unused analog inputs
that are selected should be tied to AGND
through a 0.1
μ
F capacitor. This prevents any
DC current flow.
The analog inputs are single-ended and inter-
nally biased to the REFBUF voltage (nominally
2.1 V). The REFBUF output should be buffered
if it is to be used for microphone phantom
power.
The use of a single-pole RC filter is recom-
mended for use as an external anti-alias filter for
the CS4218. The maximum cutoff frequency
(lowpass) should not exceed 200 kHz. A lower
value for cuttoff frequency may be used, and is
dependent upon the application’s input band-
width.
The CS4218 inputs will accept a 1Vrms signal,
so a divide by two resistor network will serve as
a front-end interface to 2 Vrms line level sys-
tems. Figure 9 shows a simple input circuit that
includes a gain of 0.5 and the required RC filter.
The gain of 0.5 yields a full scale input sensitiv-
ity of 2 V
rms
with the CS4218 programmable
gain set to 0.
The analog outputs are also single-ended and
centered around the REFBUF voltage. AC cou-
pling capacitors of >1
μ
F are recommended.
Refer to Figure 8 for the recommended analog
output circuit.
Line In
Right
Line In
Left
300 pF
NPO
NPO
5.6K
0.33 uF
LIN1
or
LIN2
5.6K
5.6K
5.6K
0.33 uF
300 pF
RIN1
or
RIN2
Figure 9. Line Inputs.
CS4218
12
DS135F1
相关PDF资料 |
PDF描述 |
|---|---|
| CS4218-KQ | 16-Bit Stereo Audio Codec |
| CS4218 | 16-Bit Stereo Audio Codec |
| CS4220 | 24-Bit Stereo Audio Codec with 3V Interface |
| CS4220-KS | IC EEPROM SRL 512X8BIT 8DIP |
| CS4221 | 24-Bit Stereo Audio Codec with 3V Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS4218-KQ | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:16-Bit Stereo Audio Codec |
| CS4220 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit Stereo Audio Codec with 3V Interface |
| CS4220-KS | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit Stereo Audio Codec with 3V Interface |
| CS4220-KSR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cirrus Logic 功能描述: |
| CS4220-KSZ | 功能描述:接口—CODEC IC 24Bit Str Audio CODEC 3V Intrfc RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。