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參數(shù)資料
| 型號： | AD7191BRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 2CH 24B SD 24TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Weigh Scale Introduction |
| 設(shè)計(jì)資源： | Precision Weigh Scale Design Using AD7191 with Internal PGA (CN0118) |
| 標(biāo)準(zhǔn)包裝： | 62 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 120 |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個差分，雙極 |
| 產(chǎn)品目錄頁面： | 777 (CN2011-ZH PDF) |
AD7191
Rev. A | Page 13 of 20
RMS NOISE AND RESOLUTION SPECIFICATIONS
Table 5 shows the rms noise of the AD7191 for the four output
data rates and four gains. The numbers given are for an
external 5 V reference. These numbers are typical and are
generated with a differential input voltage of 0 V. Table 6
shows the effective resolution; the output peak-to-peak (p-p)
resolution is listed in brackets. It is important to note that the
effective resolution is calculated using the rms noise, whereas
the p-p resolution is calculated based on peak-to-peak noise.
The p-p resolution represents the resolution for which there is
no code flicker. These numbers are typical and are rounded to
the nearest half-LSB.
The effective resolution (ENOB) is defined as
ENOB = log2 (Full-Scale Range/rms Noise)
The noise-free bits or p-p resolution is defined as
p-p Resolution = log2 (Full-Scale Range/p-p Noise)
where Full-Scale Range = 2 × VREF/Gain.
Table 5. RMS Noise (nV) vs. Gain and Output Data Rate Using a 5 V Reference
ODR2, ODR1
Output Data Rate (Hz)
Settling Time (ms)
Gain of 1
Gain of 8
Gain of 64
Gain of 128
11
10
400
490
85
17
15
10
50
80
2000
260
46
34
01
60
66.7
2100
273
48
38
00
120
33.3
2400
315
64
51
Table 6. Typical Resolution (Bits) vs. Gain and Output Update Rate Using a 5 V Reference
ODR2, ODR1
Output Data Rate (Hz)
Settling Time (ms)
Gain of 1
Gain of 8
Gain of 64
Gain of 128
11
10
400
24 (21.5)
23.5 (21)
23 (20.5)
22 (19.5)
10
50
80
22 (19.5)
21.5 (19)
20.5 (18)
01
60
66.7
22 (19.5)
21.5 (19)
20.5 (18)
00
120
33.3
22 (19.5)
21.5 (19)
21 (18.5)
20 (17.5)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AD7191BRUZ | 制造商:Analog Devices 功能描述:IC ADC 24BIT 120SPS TSSOP-24 |
| AD7191BRUZ-REEL | 功能描述:IC ADC 24BIT 2CH LN SD 24TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| AD7191KSTZ | 制造商:Analog Devices 功能描述: |
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| AD7192 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA |
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