- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362802 > EVAL-AD7708EB (Analog Devices, Inc.) 8-/10-Channel, Low Voltage, Low Power, ADCs PDF資料下載
參數(shù)資料
| 型號： | EVAL-AD7708EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 8-/10-Channel, Low Voltage, Low Power, ADCs |
| 中文描述： | 8-/10-Channel，低電壓，低功耗，ADC的 |
| 文件頁數(shù)： | 16/44頁 |
| 文件大?。?/td> | 339K |
| 代理商： | EVAL-AD7708EB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
REV. 0
–16–
AD7708/AD7718
Table I. ADC Conversion and Settling Times for Various
SF Words with
CHOP
= 0
SF
Word
Data Update Rate
f
ADC
(Hz)
105.3
59.36
50.56
30.3
19.79
15
7.5
5.35
Settling Time
t
SETTLE
(ms)
19.04
33.69
39.55
65.9
101.07
133.1
266.6
373.54
13
23
27
45
69 (Default)
91
182
255
The overall frequency response is the product of a sinc
3
and a
sinc response. There are sinc
3
notches at integer multiples of
3
×
f
ADC
and there are sinc notches at odd integer multiples
of f
ADC
/2. The 3 dB frequency for all values of SF obeys the
following equation:
f
(3
dB
) = 0.24
×
f
ADC
Normal-mode rejection is the major function of the digital filter
on the AD7708/AD7718. The normal mode 50
±
1 Hz rejection
with an SF word of 82 is typically –100 dB. The 60
±
1 Hz
rejection with SF = 68 is typically –100 dB. Simultaneous 50 Hz
and 60 Hz rejection of better than 60 dB is achieved with an SF
of 69. Choosing an SF word of 69 places notches at both 50 Hz
and 60 Hz. Figures 5 to 9 show the filter rejection for a selection
of SF words.
The frequency response of the filter H (f) is as follows:
where
f
MOD
= 32,768 Hz,
SF
= value programmed into SF Register,
f
OUT
= f
MOD
/(SF
×
8
×
3).
The following plots show the filter frequency response for a
variety of update rates from 5 Hz to 105 Hz.
1
8
8
1
2
2
3
SF
SF
sin(
f f
/
f f
/
f f
/
/
f f
MOD
)
MOD
OUT
OUT
×
×
×
×
×
×
×
×
π
×
×
sin(
)
sin(
sin(
)
)
π
π
π
FREQUENCY
–
Hz
0
–
140
–
200
0
650
50 100 150 200 250 300 350 400 450 500 550 600
700
A
–
–
20
–
120
–
160
–
180
–
60
–
100
–
40
–
80
SF = 13
OUTPUT DATA RATE = 105Hz
INPUT BANDWIDTH = 25.2Hz
FIRST NOTCH = 52.5Hz
50Hz REJECTION =
–
23.6dB, 50Hz 1Hz REJECTION =
–
20.5dB
60Hz REJECTION =
–
14.6dB, 60Hz 1Hz REJECTION =
–
13.6dB
Figure 5. Filter Profile with SF = 13
FREQUENCY
–
Hz
0
–
80
–
160
0
100
10
A
–
20
30
40
50
60
70
80
90
–
20
–
40
–
120
–
140
–
60
–
100
SF = 82
OUTPUT DATA RATE = 16.65Hz
INPUT BANDWIDTH = 4Hz
50Hz REJECTION =
–
171dB, 50Hz 1Hz REJECTION =
–
100dB
60Hz REJECTION =
–
58dB, 60Hz 1Hz REJECTION =
–
53dB
Figure 6. Filter Profile with SF = 82
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD7718EB | 8-/10-Channel, Low Voltage, Low Power, ADCs |
| EVAL-AD7710EB | CAPACITOR 0.1UF CERAMIC 0805 |
| EVAL-AD7711EB | CERAMIC CHIP CAPACITOR |
| EVAL-AD7712EB | 0.1UF 50V +-20% 0805 X7R CERAMIC CAPACITOR |
| EVAL-AD7713EB | CAP CERAMIC 1.0UF 10V 10% X7R 0805 SMD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD7708EBZ | 功能描述:BOARD EVAL FOR AD7708 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7709EB | 制造商:Analog Devices 功能描述:EVAL KIT FOR 16BIT- ADC W/ SWITABLE CURRENT SOURCES - Bulk |
| EVAL-AD7710EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:Signal Conditioning ADC |
| EVAL-AD7711EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Signal Conditioning ADC with RTD Excitation Currents |
| EVAL-AD7712EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Signal Conditioning ADC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。