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參數(shù)資料
| 型號： | ADS1232REF |
| 廠商： | Texas Instruments |
| 文件頁數(shù)： | 10/39頁 |
| 文件大小： | 0K |
| 描述： | EVALUATION MODULE FOR ADS1232 |
| 產品培訓模塊： | Data Converter Basics |
| 視頻文件： | Nuts and Bolts of the Delta-Sigma Converter |
| 標準包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 80 |
| 數(shù)據(jù)接口： | 串行 |
| 輸入范圍： | ±2.5 V |
| 在以下條件下的電源（標準）： | 7.1mW @ 5V |
| 工作溫度： | -40°C ~ 105°C |
| 已用 IC / 零件： | ADS1232 |
| 已供物品： | 板 |
| 產品目錄頁面： | 889 (CN2011-ZH PDF) |
| 相關產品： | ADS1232IPWRG4-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP 296-25894-2-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP ADS1232IPWG4-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP 296-18589-5-ND - IC ADC 24-BIT 10/80SPS 24-TSSOP |
| 其它名稱： | 296-20803 |
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DATA RATE
DATA READY/DATA OUTPUT (DRDY/DOUT)
SERIAL CLOCK INPUT (SCLK)
DATA FORMAT
SBAS350F – JUNE 2005 – REVISED FEBRUARY 2008
The ADS1232/4 data rate is set by the SPEED pin,
This digital output pin serves two purposes. First, it
as shown in Table 7. When SPEED is low, the data
indicates when new data are ready by going low.
rate is nominally 10SPS. This data rate provides the
Afterwards, on the first rising edge of SCLK, the
lowest noise, and also has excellent rejection of both
DRDY/DOUT
pin
changes
function
and
begins
50Hz
and
60Hz
line-cycle
interference.
For
outputting the conversion data, most significant bit
applications requiring fast data rates, setting SPEED
(MSB) first. Data are shifted out on each subsequent
high selects a data rate of nominally 80SPS.
SCLK rising edge. After all 24 bits have been
retrieved, the pin can be forced high with an
Table 7. Data Rate Settings
additional SCLK. It will then stay high until new data
are ready. This configuration is useful when polling
DATA RATE
on the status of DRDY/DOUT to determine when to
SPEED
Internal Oscillator
External
begin data retrieval.
PIN
or 4.9152MHz Crystal
Oscillator
0
10SPS
fCLKIN / 491,520
1
80SPS
fCLKIN / 61,440
This digital input shifts serial data out with each rising
edge. This input has built-in hysteresis, but care
should still be taken to ensure a clean signal. Glitches
or slow-rising signals can cause unwanted additional
The ADS1232/4 output 24 bits of data in binary two’s
shifting. For this reason, it is best to make sure the
complement format. The least significant bit (LSB)
rise-and-fall times of SCLK are less than 50ns.
has a weight of 0.5VREF/(2
23
– 1). The positive
full-scale input produces an output code of 7FFFFFh
and the negative full-scale input produces an output
code of 800000h. The output clips at these codes for
signals exceeding full-scale. Table 8 summarizes the
ideal output codes for different input signals.
Table 8. Ideal Output Code vs Input Signal(1)
INPUT SIGNAL VIN
(AINP – AINN)
IDEAL OUTPUT CODE
≥ +0.5VREF/Gain
7FFFFFh
(+0.5VREF/Gain)/(2
23 – 1)
000001h
0
000000h
(–0.5VREF/Gain)/(2
23 – 1)
FFFFFFh
≤ –0.5VREF/Gain
800000h
(1)
Excludes effects of noise, INL, offset, and gain errors.
18
Copyright 2005–2008, Texas Instruments Incorporated
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADS1234 | 制造商:BB 制造商全稱:BB 功能描述:Ultra Low-Noise, 24-Bit Analog-to-Digital Converter |
| ADS1234IPW | 功能描述:模數(shù)轉換器 - ADC 24-Bit Ultra Low-Noise 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 |
| ADS1234IPW | 制造商:Texas Instruments 功能描述:IC ADC ULTRALOW NOISE 24BIT SMD 制造商:Texas Instruments 功能描述:IC, ADC, ULTRALOW NOISE, 24BIT, SMD 制造商:Texas Instruments 功能描述:IC, ADC, ULTRALOW NOISE, 24BIT, SMD; Resolution (Bits):24bit; Sampling Rate:80SPS; Supply Voltage Min:2.7V; Supply Voltage Max:5.3V; Supply Current:1.35mA; Digital IC Case Style:TSSOP; No. of Pins:28; Input Channel Type:Differential;;RoHS Compliant: Yes |
| ADS1234IPWG4 | 功能描述:模數(shù)轉換器 - ADC 24-Bit Ultra Low-Noise 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 |
| ADS1234IPWR | 功能描述:模數(shù)轉換器 - ADC 24-Bit Ultra Low-Noise 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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