CDB4385
8. PERFORMANCE PLOTS
The plots in the following section were acheived using an Audio Precision System 2700 and a randomly chosen pro-
duction CDB4385. In some cases the performance may be limited by the CDB4385. All measurements were taken
at room temp using the standard AP filter options (20 Hz to 22 kHz) with default board settings and nominal
datasheet voltages applied unless otherwise noted.
The impulse response plots were taken both pre-and post filtering as the off-chip filter was degrading the perfor-
mance at higher sample rates. The pre-filter impulse response plots were taken directly at the output pins of the
DAC (with the analog filter still connected) to show the effect of the CDB’s analog filtering on the impulse response
(as the analog filtering adds its own signature to the impulse response of the DAC, and in the case of the higher
sampling rates it was band-limiting it).
+0
-10
-20
-30
-40
-50
+0
-10
-20
-30
-40
-50
d
B
-60
-70
d
B
-60
-70
r
-80
r
-80
A
-90
-100
-110
-120
-130
-140
A
-90
-100
-110
-120
-130
-140
-150
20
50
100
200
500
1k
2k
5k
10k
20k
-150
20
50
100
200
500
1k
2k
5k
10k
20k
d
+0
-10
-20
-30
-40
-50
-60
Hz
Figure 1. FFT (48 kHz, 0 dB)
d
+0
-10
-20
-30
-40
-50
-60
Hz
Figure 2. FFT (48 kHz, -60 dB)
B
-70
B
-70
r
-80
r
-80
A
-90
-100
-110
-120
-130
-140
A
-90
-100
-110
-120
-130
-140
-150
20
50
100
200
500
1k
2k
5k
10k
20k
-150
20k
40k
60k
80k
100k
120k
Hz
Figure 3. FFT (48 kHz, No Input)
DS671DB4
Hz
Figure 4. FFT (48 kHz Out-of-Band, No Input)
7
相关PDF资料
CDB43L22 BOARD EVAL FOR CS43L22
CDB5340 BOARD EVAL FOR CS5340 STEREO ADC
CDB5343 BOARD EVAL FOR CS5343 STEREO ADC
CDB5451A EVAL BOARD CS5451A 6CH ADC
CDB5524 EVAL BOARD FOR CS5524 ADC
CDB5581 BOARD EVAL FOR CS5581 ADC
CDK5571 CDB5571 W/CAPTURE PLUS 2 SYSTEM
CDK5581 KIT BOARD FOR CDB5581 ADC
相关代理商/技术参数
CDB4390 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit, Stereo D/A Converter for Digital Audio
CDB4391 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit, 192 kHz Stereo DAC with Volume Control
CDB4391A 功能描述:音频 IC 开发工具 Eval Bd CS4391A RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB4392 功能描述:音频 IC 开发工具 Eval Bd 114dB 192kHz DAC w/DSD RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB4396 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit, 192 kHz D/A Converter for Digital Audio
CDB4397 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit, Multi-Standard D/A Converter for Digital Audio
CDB4398 功能描述:音频 IC 开发工具 Eval Bd RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
CDB43L21 功能描述:音频 IC 开发工具 Eval Bd 98dB 96kHz Low-Pwr DAC RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V