參數(shù)資料
型號: AD7798BRUZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 2/28頁
文件大?。?/td> 0K
描述: IC ADC 16BIT 3CH LP 16-TSSOP
標準包裝: 2,500
位數(shù): 16
采樣率(每秒): 470
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 2mW
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: 16-TSSOP(0.173",4.40mm 寬)
供應商設(shè)備封裝: 16-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 3 個差分,單極;3 個差分,雙極
AD7798/AD7799
Data Sheet
Rev. B | Page 10 of 28
OUTPUT NOISE AND RESOLUTION SPECIFICATIONS
AD7798
Table 5 shows the AD7798 output rms noise for some update
rates and gain settings. The numbers given are for the bipolar
input range with a 2.5 V reference. These numbers are typical
and are generated with a differential input voltage of 0 V. Table 6
shows the effective resolution, and the output peak-to-peak
resolution is shown in parentheses. It is important to note that
the effective resolution is calculated using the rms noise, whereas
the peak-to-peak resolution is based on the peak-to-peak noise.
The peak-to-peak resolution represents the resolution for which
there is no code flicker. These numbers are typical and are
rounded to the nearest LSB.
Table 5. Output RMS Noise (V) vs. Gain and Output Update Rate for the AD7798 Using a 2.5 V Reference
Update Rate
Gain of 1
Gain of 2
Gain of 4
Gain of 8
Gain of 16
Gain of 32
Gain of 64
Gain of 128
4.17 Hz
0.64
0.6
0.29
0.22
0.1
0.065
0.039
0.041
8.33 Hz
1.04
0.96
0.38
0.26
0.13
0.078
0.057
0.055
16.7 Hz
1.55
1.45
0.54
0.36
0.18
0.11
0.087
0.086
33.2 Hz
2.3
2.13
0.74
0.5
0.23
0.17
0.124
0.118
62 Hz
2.95
2.85
0.92
0.58
0.29
0.2
0.153
0.144
123 Hz
4.89
4.74
1.49
1
0.48
0.32
0.265
0.283
242 Hz
11.76
9.5
4.02
1.96
0.88
0.45
0.379
0.397
470 Hz
11.33
9.44
3.07
1.79
0.99
0.63
0.568
0.593
Table 6. Typical Resolution (Bits) vs. Gain and Output Update Rate for the AD7798 Using a 2.5 V Reference
Update Rate
Gain of 1
Gain of 2
Gain of 4
Gain of 8
Gain of 16
Gain of 32
Gain of 64
Gain of 128
4.17 Hz
16 (16)
8.33 Hz
16 (16)
16.7 Hz
16 (16)
33.2 Hz
16 (16)
62 Hz
16 (16)
16 (15.5)
123 Hz
16 (16)
16 (15.5)
16 (14.5)
242 Hz
16 (16)
16 (15.5)
16 (16)
16 (15)
16 (14)
470 Hz
16 (16)
16 (15.5)
16 (16)
16 (15.5)
16 (14.5)
15.5 (13.5)
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