- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375238 > AD7710SQ (ANALOG DEVICES INC) Signal Conditioning ADC PDF資料下載
參數(shù)資料
| 型號： | AD7710SQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Signal Conditioning ADC |
| 中文描述： | 2-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, CDIP24 |
| 封裝： | 0.300 INCH, HERMETIC SEALED, CERDIP-24 |
| 文件頁數(shù)： | 10/28頁 |
| 文件大小： | 220K |
| 代理商： | AD7710SQ |
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頁當前第10頁第11頁第12頁第13頁第14頁第15頁第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
REV. F
–10–
AD7710
PGA GAIN
G2
0
0
0
0
1
1
1
1
Channel Selection
CH
0
1
Power-Down
PD
0
1
Word Length
WL
0
1
Output Compensation Current
IO
0
Off
1
On
Burn-Out Current
BO
0
Off
1
On
Bipolar/Unipolar Selection (Both Inputs)
B/U
0
Bipolar
1
Unipolar
Filter Selection (FS11–FS0)
The on-chip digital filter provides a Sinc
3
(or (Sinx/x)
3
) filter response. The 12 bits of data programmed into these bits determine the
filter cutoff frequency, the position of the first notch of the filter and the data rate for the part. In association with the gain selection,
it also determines the output noise (and hence the effective resolution) of the device.
The first notch of the filter occurs at a frequency determined by the relationship: filter first notch frequency = (f
CLK
IN
/512)/
code
where
code
is the decimal equivalent of the code in bits FS0 to FS11 and is in the range 19 to 2,000. With the nominal f
CLK IN
of
10 MHz, this results in a first notch frequency range from 9.76 Hz to 1.028 kHz. To ensure correct operation of the AD7710, the
value of the code loaded to these bits must be within this range. Failure to do this will result in unspecified operation of the device.
Changing the filter notch frequency, as well as the selected gain, impacts resolution. Tables I and II and Figure 2 show the effect of
the filter notch frequency and gain on the effective resolution of the AD7710. The output data rate (or effective conversion time) for
the device is equal to the frequency selected for the first notch of the filter. For example, if the first notch of the filter is selected at
50 Hz, then a new word is available at a 50 Hz rate or every 20 ms. If the first notch is at 1 kHz, a new word is available every 1 ms.
The settling time of the filter to a full-scale step input change is worst case 4
×
1/(output data rate). This settling time is to 100% of
the final value. For example, with the first filter notch at 50 Hz, the settling time of the filter to a full-scale step input change is
80 ms max. If the first notch is at 1 kHz, the settling time of the filter to a full-scale input step is 4 ms max. This settling time can be
reduced to 3
×
l/(output data rate) by synchronizing the step input change to a reset of the digital filter. In other words, if the step
input takes place with
SYNC
low, the settling time will be 3
×
l/(output data rate). If a change of channels takes place, the settling
time is 3
×
l/(output data rate) regardless of the
SYNC
input.
The –3 dB frequency is determined by the programmed first notch frequency according to the relationship: filter –3 dB frequency
= 0.262
×
first notch frequency.
G1
0
0
1
1
0
0
1
1
G0
0
1
0
1
0
1
0
1
Gain
1
2
4
8
16
32
64
128
(Default Condition After the Internal Power-On Reset)
Channel
AIN1
AIN2
(Default Condition After the Internal Power-On Reset)
Normal Operation
Power-Down
(Default Condition After the Internal Power-On Reset)
Output Word Length
16-Bit
24-Bit
(Default Condition After Internal Power-On Reset)
(Default Condition After Internal Power-On Reset)
(Default Condition After Internal Power-On Reset)
(Default Condition After Internal Power-On Reset)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7710* | Signal Conditioning ADC |
| AD7710 | Signal Conditioning ADC(LC2MOS信號調(diào)節(jié)A/D轉(zhuǎn)換器) |
| AD7711AAR | LC2MOS Signal Conditioning ADC with RTD Current Source |
| AD7711ASQ | LC2MOS Signal Conditioning ADC with RTD Current Source |
| AD7711A* | LC2MOS Signal Conditioning ADC with RTD Current Source |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7710SQ/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 24-Bit |
| AD7711 | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Signal Conditioning ADC with RTD Excitation Currents |
| AD7711A | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Signal Conditioning ADC with RTD Current Source |
發(fā)布緊急采購，3分鐘左右您將得到回復。