参数资料
| 型号： | CS5512-BSZ |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 13/26页 |
| 文件大小： | 0K |
| 描述： | IC ADC 20BIT EXTERNAL OSC 8-SOIC |
| 标准包装： | 100 |
| 位数： | 20 |
| 采样率（每秒）： | 326 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 2.5mW |
| 电压电源： | 双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，双极 |
CS5510/11/12/13
20
DS337F4
priate time during the third conversion cycle to en-
sure the maximum possible throughput.
2.6
Digital Off-chip System
Calibration
The CS5510/11/12/13 exhibit excellent linearity
with low offset and gain drift, without the need for
calibration. If precision voltage measurements are
required by the system, however, software-based
offset and gain calibration can be performed by the
system.
To perform a software offset calibration, the “zero-
point” of the system should be established by ap-
plying an input to the system equal to zero. Then,
the user can obtain a conversion and store it in
memory as the system’s zero point (ZP). This num-
ber can then be used as the zero point for any sub-
sequent conversion words. In the 20-bit devices
(CS5512 and CS5513), multiple conversions can
be averaged to arrive at a more accurate offset val-
ue. In the 16-bit devices (CS5510 and CS5511),
averaging may not be meaningful, because the
noise will be below the size of one LSB when using
nominal voltages for VREF (2.5 V).
A software gain calibration can be performed by
bringing the system to a known calibration Voltage
value (Vcal) and acquiring a conversion (note that
Vcal should be low enough to compensate for the
possible gain error of the ADC). Multiple conver-
sions can be averaged at this point to improve the
accuracy of the calibration. The code obtained
from this conversion is the real value (Cr) of the
calibration Voltage input, and will differ from the
ideal value. The ideal value for this conversion (Ci)
will be equivalent to: 0x7FFF*Vcal/(0.80*Vref) for
the CS5510/11, and 0x7FFFF*Vcal/(0.80*Vref) for
the CS5512/13. The gain error (GE) is equal to: (Cr
- ZP)/Ci. To correct for both offset and gain error in
subsequent conversions, subtract the offset error,
and then divide by the gain error.
2.7
Power Consumption, Sleep and
Reset
The CS5510/11/12/13 accommodates two power
modes: normal and sleep. The normal mode is the
default mode and is entered after power is estab-
lished to the ADC. In normal mode, the ADCs typ-
ically consumes 2.5 mW. Sleep is entered when
the user leaves SCLK high for at least 200
μs. The
ADCs are guaranteed to be in sleep after SCLK is
high (logic 1) for 2 ms. The sleep mode reduces
the consumed power to less than 10
μW when CS
is high (logic 1). If CS is low (logic 0) at this time,
the SDO drive logic will still be active, and the con-
sumed sleep power will be greater. To exit sleep
and return to normal mode, the user must return
SCLK low for at least 10
μs. After a sleep is exited,
the ADCs reset all their internal logic, including
their digital filters, and begin performing conver-
sions. Since the filters are reset, the first three con-
version after returning to normal mode will not be
fully settled.
2.8
PCB Layout
The CS5510/11/12/13 should be placed entirely
over the analog ground. Place the analog-digital
plane split immediately adjacent to the digital pins
of the chip.
相关PDF资料 |
PDF描述 |
|---|---|
| CS5526-BSZR | IC ADC 20BIT W/4BIT LATCH 20SSOP |
| CS5528-ASZR | IC ADC 24BIT 8CH 24-SSOP |
| CS5529-ASZR | IC ADC 16BIT W/6BIT LATCH 20SSOP |
| CS5530-ISZR | IC ADC 24BIT 1CH W/LNA 20-SSOP |
| CS5534-ASZR | IC ADC 24BIT 4CH W/LNA 24-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS5512-BSZR | 功能描述:模数转换器 - ADC IC 20-Bit 8-Pin Delta Sigma ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| CS5513 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:16-bit and 20-bit, 8-pin ΔΣ ADCs |
| CS5513-BS | 功能描述:模数转换器 - ADC 20-Bit Delta Sigma ADC Int. OSC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| CS5513-BSR | 功能描述:模数转换器 - ADC IC 20-Bit 8-Pin Delta Sigma ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| CS5513-BSZ | 功能描述:模数转换器 - ADC 20-Bit Delta Sigma ADC Int. OSC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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