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參數(shù)資料
| 型號： | CS5513 |
| 元件分類： | 串行ADC |
| 英文描述： | CS5510/11/12/13 Product Data Sheet|DC Measurement|A/D Converters |
| 中文描述： | CS5510/11/12/13產(chǎn)品數(shù)據(jù)|直流測量| A / D轉(zhuǎn)換 |
| 文件頁數(shù)： | 11/26頁 |
| 文件大小： | 499K |
| 代理商： | CS5513 |
CS5510/11/12/13
DS337F1
11
as great as (V+) - (V-). The VREF pin can be con-
nected directly to the V+ pin. This will establish a
voltage reference equal to (V+) - (V-) for the con-
verter. The effective resolution of the part (noise-
free bits for a single sample with no averaging) will
vary with VREF. Figure 4 shows how the VREF
voltage affects the noise-free resolution of the
CS5512/13. The CS5510/11 follow the same curve,
but are limited to 16 bits of resolution. Note that the
reference voltage should not be established prior to
having the supply voltages on the V+ and V- pins.
2.2.1
Voltage Reference Input Model
Figure 5 illustrates the input model for the VREF
pin. It includes a coarse/fine charge buffer which
reduces the dynamic current demand of the exter-
nal reference. Typical CVF (sampling) current is
about 6 nA (See Figure 5).
The nominal input span of the converter is defined
to be a bipolar span equal to ±(VREF - V-)*(0.80
±0.08).
2.3
The CS5510/11/12/13 are designed to operate from
single or dual supplies. Figure 6 illustrates the
Power Supply Arrangements
CS5510/11/12/13 connected with a single +5 V
supply to measure differential inputs relative to a
common mode of 2.5 V. Figure 7 illustrates the
CS5510/11/12/13 connected with ±2.5 V analog
supplies to measure ground referenced bipolar sig-
nals. It is not necessary that the dual supples on the
ADCs be balanced, however, they must sum to five
volts. Figure 8 illustrates the ADCs configured
with V+ = +3.3 V and V- = -1.7 V, accommodating
a +3.3 V digital supply.
VREF
C
=
7pF
2
φ
1
φ
V
≤
25 mV
os
i
=
fV
C
os
n
f = 32.768 kHz
Coarse
Fine
Figure 5. Input model for VREF pin.
13
14
15
16
17
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
VREF (V)
E
Figure 4. CS5512/13 Measured Noise-Free Bits vs. VREF.
Effective Bits = Log
2
(Bipolar Span / 6.6*RMS Noise)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CS5513-BS | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 20-Bit Delta Sigma ADC Int. OSC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| CS5513-BSR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC 20-Bit 8-Pin Delta Sigma ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| CS5513-BSZ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 20-Bit Delta Sigma ADC Int. OSC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| CS5513-BSZR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC IC 20-Bit 8-Pin Delta Sigma ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| CS5516 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:16BIT/20-BIT BRIDGE TRANSDUCER A/D CONVERTER |
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