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參數(shù)資料
| 型號： | CS5533-ASZR |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 5/43頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT 2CH W/LNA 24-SSOP |
| 標準包裝： | 1,000 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 3.84k |
| 數(shù)據(jù)接口： | 串行 |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 45mW |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 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） |
| 供應商設備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 4 個差分，單極；4 個差分，雙極 |
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CS5531/32/33/34-AS
DS289F5
13
instrumentation amplifier is typically 1200 pA
over
-40°C to +85°C (MCLK=4.9152 MHz).
The common-mode plus signal range of the instru-
mentation amplifier is (VA-) + 0.7 V to (VA+) -
1.7 V.
Figure 4 illustrates the input models for the ampli-
fiers. The dynamic input current for each of the
pins can be determined from the models shown.
Note:
The C=3.9pF and C = 14pF capacitors are
for input current modeling only. For physical
input capacitance see ‘Input Capacitance’
specification under Analog Characteristics.
2.1.1. Analog Input Span
The full-scale input signal that the converter can
digitize is a function of the gain setting and the ref-
erence voltage connected between the VREF+ and
VREF- pins. The full-scale input span of the con-
verter is [(VREF+) - (VREF-)]/(GxA), where G is
the gain of the amplifier and A is 2 for VRS = 0, or
A is 1 for VRS = 1. VRS is the Voltage Reference
Select bit, and must be set according to the differen-
tial voltage applied to the VREF+ and VREF- pins
on the part. See section 2.3.5 for more details.
After reset, the unity gain buffer is engaged. With a
2.5V reference this would make the full-scale input
range default to 2.5 V. By activating the instrumen-
tation amplifier (i.e. a gain setting other than 1) and
using a gain setting of 32, the full-scale input range
can quickly be set to 2.5/32 or about 78 mV. Note
that these input ranges assume the calibration regis-
ters are set to their default values (i.e. Gain = 1.0 and
Offset = 0.0).
2.1.2. Multiplexed Settling Limitations
The settling performance of the CS5531/32/33/34
in multiplexed applications is affected by the sin-
gle-pole, low-pass filter which follows the instru-
mentation amplifier (see Figure 3). To achieve data
sheet settling and linearity specifications, it is rec-
ommended that a 22 nF C0G capacitor be used.
Capacitors as low as 10 nF or X7R type capacitors
can also be used with some minor increase in dis-
tortion for AC signals.
2.1.3. Voltage Noise Density Performance
Figure 5 illustrates the measured voltage noise
density versus frequency from 0.025 Hz to 10 Hz
of a CS5532-AS. The device was powered with
±2.5 V supplies, using 30 Sps OWR, the 64x gain
range, bipolar mode, and with the input short bit
enabled.
AIN
Gain =2, 4,8,16, 32,64
C =3 .9 pF
f=
Gain = 1
AIN
C= 14 pF
φ Coarse
1
φ Fine
1
V
≤ 12 mV
i= fV
C
os
n
V
≤ 8mV
i= fV
C
os
n
MCLK
128
f=
MCLK
16
Figure 4. Input models for AIN+ and AIN- pins
1
10
100
1000
0.025
0.10
1.00
10.00
Frequency (Hz)
Figure 5. Measured Voltage Noise Density, 64x
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CS5534 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:16 BIT AND 24 BIT ADCS WITH ULTRA LOW NOISE PGIA |
| CS5534-AS | 功能描述:模數(shù)轉換器 - ADC 4-Ch 24-Bit ADCs w/ Ultra Low Noise PGIA RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 |
| CS5534-ASR | 功能描述:模數(shù)轉換器 - ADC IC 24-Bit ADCs w/UltraLw Noise PGIA RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 |
| CS5534-ASZ | 功能描述:模數(shù)轉換器 - ADC 4-Ch 24-Bit ADCs w/ Ultra Low Noise PGIA RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 |
| CS5534-ASZR | 功能描述:模數(shù)轉換器 - ADC IC 24-Bit ADCs w/UltraLw Noise PGIA RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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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