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| 型号： | CS5532-BSZ |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 4/43页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT 2CH W/LNA 20SSOP |
| 标准包装： | 66 |
| 位数： | 24 |
| 采样率（每秒）： | 3.84k |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 45mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极 |
| 产品目录页面： | 755 (CN2011-ZH PDF) |
| 配用： | 598-1159-ND - BOARD EVAL FOR CS5532U ADC |
| 其它名称： | 598-1113-5 |
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CS5531/32/33/34-AS
12
DS289F5
2. GENERAL DESCRIPTION
The CS5531/32/33/34 are highly integrated
Σ An-
alog-to-Digital Converters (ADCs) which use
charge-balance
techniques
to
achieve
16-bit
(CS5531/33) and 24-bit (CS5532/34) performance.
The ADCs are optimized for measuring low-level
unipolar or bipolar signals in weigh scale, process
control, scientific, and medical applications.
To accommodate these applications, the ADCs
come as either two-channel (CS5531/32) or four-
channel (CS5533/34) devices and include a very-
low-noise, chopper-stabilized, programmable-gain
instrumentation amplifier (PGIA, 6 nV/
√Hz @ 0.1
Hz) with selectable gains of 1×, 2×, 4×, 8×, 16×,
32×, and 64×. These ADCs also include a fourth or-
der
Σ modulator followed by a digital filter which
provides twenty selectable output word rates of 6.25,
7.5, 12.5, 15, 25, 30, 50, 60, 100, 120, 200, 240, 400,
480, 800, 960, 1600, 1920, 3200, and 3840 Samples
per second (MCLK = 4.9152 MHz).
To ease communication between the ADCs and a
microcontroller, the converters include a simple
three-wire serial interface which is SPI and Mi-
crowire compatible with a Schmitt-trigger input on
the serial clock (SCLK).
2.1. Analog Input
Figure 3 illustrates a block diagram of the
CS5531/32/33/34. The front end consists of a multi-
plexer, a unity gain coarse/fine charge input buffer,
and a programmable gain chopper-stabilized instru-
mentation amplifier. The unity gain buffer is activat-
ed any time conversions are performed with a gain
of one and the instrumentation amplifier is activated
any time conversions are performed with gain set-
tings greater than one.
The unity gain buffer is designed to accommodate
rail to rail input signals. The common-mode plus
signal range for the unity gain buffer amplifier is
VA- to VA+. Typical CVF (sampling) current for
the unity gain buffer amplifier is about 50 nA
(MCLK = 4.9152 MHz, see Figure 4).
The instrumentation amplifier is chopper stabilized
and operates with a chop clock frequency of
MCLK/128. The CVF (sampling) current into the
VREF+
Sinc
Digital
Filter
XGAIN
M
U
X
AIN2+
AIN2-
AIN1+
AIN1-
CS5531/32 IN+
IN-
AIN4+
AIN4-
*
AIN1+
AIN1-
CS5533/34
M
U
X
IN+
IN-
IN+
IN-
GAIN is the gain setting of the PGIA (i.e. 2, 4, 8, 16, 32, 64)
X1
VREF-
X1
Differential
4
Order
Σ
Modulator
th
5
Programmable
Sinc
Digital Filter
3
Serial
Port
1000
1000
22 nF
C1 PIN
C2 PIN
X1
Figure 3. Multiplexer Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS5532-BSZ/H | 制造商:Cirrus Logic 功能描述: |
| CS5532-BSZR | 功能描述:模数转换器 - ADC IC 16-Bit ADCs w/UltraLw Noise PGIA 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 |
| CS5533 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:16-bit and 24-bit ADCs with Ultra-low-noise PGIA |
| CS5533-AS | 功能描述:模数转换器 - ADC 4-Ch 16-Bit ADCs w/ Ultra Low Noise PGIA 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 |
| CS5533-ASR | 功能描述:模数转换器 - ADC IC 16-Bit ADCs w/UltraLw Noise PGIA 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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