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參數(shù)資料
| 型號： | CS5372-BSZR |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 22/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MODULATOR LP/HP 2CH 24-SSOP |
| 標準包裝： | 1,000 |
| 類型： | 調(diào)制器 |
| 分辨率（位）： | 24 b |
| 采樣率（每秒）： | 512k |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 電源電壓： | ±2.5V，3.3 V ~ 5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 配用： | 598-1778-ND - EVALUATION BOARD FOR CS5376 |
CS5371 CS5372
DS255F3
9
3. MODULATOR PERFORMANCE
of the CS5371/72 modulators when combined with
the CS5376A or CS5378 digital filter. The plots
were created from ten averaged 1024 point FFTs.
3.1.
Full-scale Signal Performance
Figure 4 illustrates the full-scale signal perfor-
mance of the CS5371/72 modulators and digital fil-
ter using a 31.25 Hz input signal and a 1000 SPS
output word rate. The outstanding full-scale signal
characteristics of the CS5371/72 modulators are
shown, with no harmonic components exceeding -
120 dB. Analysis of this data set yields a signal-to-
noise ratio (SNR) of 124.0 dB and a signal-to-dis-
tortion ratio (SDR) of 119.0 dB. Note that the full-
scale signal peak in Figure 4 shows a slightly re-
duced amplitude due to spectral smearing associ-
ated with the FFT windowing function, and is a
purely digital phenomenon.
3.2.
Noise Performance
Figure 5 illustrates the noise performance of the
CS5371/72 modulators and digital filter using a
31.25 Hz -24 dB input signal at a 1000 SPS output
word rate. The outstanding noise characteristics of
the CS5371/72 modulators are shown, with the av-
eraged noise components consistently below the
-150 dB level. Analysis of this data set yields a dy-
namic range of 124.7 dB.
Note that the 0.7 dB
variation between the signal-to-noise calculation in
Figure 4 and the dynamic range calculation in Fig-
ure 5 is not modulator dependent and results from
jitter in the test signal generator when producing a
full-scale output, as evidenced by the skirt sur-
rounding the signal peak below the -140 dB level in
Figure 4.
4. SIGNAL INPUTS
The CS5371/72 modulators use a switched capac-
itor architecture for the analog signal inputs, which
has increased jitter tolerance compared with con-
tinuous time signal input stages.
4.1.
Differential Inputs - INR+/-, INF+/-
The analog signal inputs are differential and use
four pins: INR+, INR-, INF+, and INF-. Two inputs,
INR+ and INF+, are connected to the positive half
of the differential signal, while two inputs, INR- and
INF-, are connected to the negative half. The INR+
and INR- pins are switched capacitor ‘rough
charge’ inputs that pre-charge the internal sam-
pling capacitor before it is connected to the INF+
and INF- fine input pins.
The full-scale analog signal span is defined by the
voltage applied across the VREF+ and VREF-
pins. A 2.5 volt reference input sets full-scale sig-
nals as 5 volts peak-to-peak, fully differential. Dif-
ferential inputs increase the dynamic range of
Figure 4. 1024 Point FFT plot with a 31.25 Hz
input at Full-scale, ten averages
-200
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
50
100
150
200
250
300
350
400
450
500
dB
Hz
S/N = 124.0 dB
S/D = 119.0 dB
-200
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
50
100
150
200
250
300
350
400
450
500
dB
Hz
Dynamic Range = 124.7 dB
Figure 5. 1024 Point FFT plot with a 31.25 Hz
input at -24 dB, ten averages
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CS5372A-ISZ | IC MODULATOR LP/HP 2CH 24-SSOP |
| CS5373A-ISZR | IC DAC/MODULATOR LP/HP 28-SSOP |
| CS5376A-IQZ | IC FILTER DGTL MULTI-CH 64-TQFP |
| CS61577-IL1Z | IC LINE INTERFACE T1/E1 28PLCC |
| CS61584A-IQ3Z | IC LINE INTERFACE T1/E1 64LQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS5373A | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-power, High-performance Modulator and Test DAC |
| CS5373A-IS | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| CS5373A-ISR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| CS5373A-ISZ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC IC Dlt-Sgm Modulatr w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| CS5373A-ISZR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC Dlt-Sgm Modulator w/Intgrtd Tst DAC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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