參數(shù)資料
型號(hào)： AD7718BRU
廠商： ANALOG DEVICES INC
元件分類： ADC
英文描述： 8-/10-Channel, Low Voltage, Low Power, ADCs
中文描述： 10-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28
封裝： PLASTIC, TSSOP-28
文件頁(yè)數(shù)： 29/44頁(yè)
文件大?。?/td> 339K
代理商： AD7718BRU
REV. 0
AD7708/AD7718
–29–
AD0C2
AD0C1
AD0C0
RN2
RN1
RN0
ADC Range Bits
Written by the user to select the ADC input range as follows
RN2
RN1
RN0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Selected ADC Input Range (VREF = 2.5 V)
±
20 mV
±
40 mV
±
80 mV
±
160 mV
±
320 mV
±
640 mV
±
1.28 V
±
2.56 V
Filter Register (A3, A2, A1, A0 = 0, 0, 1, 1; Power-On Reset = 45Hex)
The Filter Register is an 8-bit register from which data can be read or to which data can be written. This register determines the
amount of averaging performed by the sinc filter. Table XVII outlines the bit designations for the Filter Register. FR7 through FR0
indicate the bit location, FR denoting the bits are in the Filter Register. FR7 denotes the first bit of the data stream. The number in
brackets indicates the power-on/reset default status of that bit. The number in this register is used to set the decimation factor and
thus the output update rate for the ADCs. The filter register cannot be written to by the user the ADC is active. The update rate is
used for the ADCs is calculated as follows:
f
f
CHOP Enabled CHOP
f
SF
f
CHOP Disabled CHOP
ADC
MOD
ADC
MOD
=
×
=
=
×
×
=
)
)
1
3
0
1
8
1
where
f
ADC
= ADC Output Update Rate,
f
MOD
= Modulator Clock Frequency = 32.768 kHz,
SF
= Decimal Value Written to SF Register.
Table XVII. Filter Register Bit Designations
7
R
F
6
R
F
5
R
F
4
R
F
3
R
F
2
R
F
1
R
F
0
R
F
)
0
(
7
F
S
6
F
S
)
1
(
5
F
S
)
0
(
4
F
S
)
0
(
3
F
S
)
0
(
)
1
(
2
F
S
)
0
(
1
F
S
)
1
(
0
F
S
The allowable range for SF is 13 decimal to 255 decimal with chop enabled, and the allowable SF range when chop is disabled is 03
decimal to 255 decimal. Examples of SF values and corresponding conversion rate (f
ADC
) and time (t
ADC
) are shown in Table XVIII.
It should be noted that optimum performance is obtained when operating with chop enabled. When chopping is enabled (
CHOP
= 0),
the filter register is loaded with FF HEX during a calibration cycle. With chop disabled (
CHOP
=1), the value in the filter register is
used during calibration.
Table XVIII. Update Rate vs. SF Word
CHOP Enabled
CHOP Disabled
SF (Dec)
SF (Hex)
f
ADC
(Hz)
N/A
105.3
19.79
5.35
t
ADC
(ms)
N/A
9.52
50.34
186.77
f
ADC
(Hz)
1365.33
315
59.36
16.06
t
ADC
(ms)
0.732
3.17
16.85
62.26
03
13
69
255
03
0D
45
FF
Table XVI. ADC Control Register (ADCCON) Bit Designations (continued)
相關(guān)PDF資料
PDF描述
AD7709BR 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
AD7709BRU LGE Kit Series; Functions: Continuous light; Rated Voltage: 120V AC; Style: Power Unit; Diameter: 100; Applicable Model: LGE
AD7709 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
AD7712EB LC 2 MOS Signal Conditioning ADC(229.08 k)
AD7712AN LC2MOS Signal Conditioning ADC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7718BRU-REEL 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP RoHS:否 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(gè)單端，單極
AD7718BRU-REEL7 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:-
AD7718BRUZ 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP 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 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
AD7718BRUZ-REEL7 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP 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(gè)單端，單極
AD7718BRZ 功能描述:IC ADC 24BIT R-R 8/10CH 28SOIC 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 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*